Merge branch 'blob-show-spec' into 'master'

Blob refactor: Fix/update blob show specs

See merge request gitlab-org/gitlab!78541

app/assets/javascripts/blob/components/blob_header.vue

@@ -42,6 +42,11 @@ export default {
       required: false,
       default: false,
     },
+    showPath: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
   },
   data() {
     return {
@@ -55,6 +60,9 @@ export default {
     showDefaultActions() {
       return !this.hideDefaultActions;
     },
+    isEmpty() {
+      return this.blob.rawSize === 0;
+    },
   },
   watch: {
     viewer(newVal, oldVal) {
@@ -74,7 +82,7 @@ export default {
   <div class="js-file-title file-title-flex-parent">
     <div class="gl-display-flex">
       <table-of-contents class="gl-pr-2" />
-      <blob-filepath :blob="blob">
+      <blob-filepath :blob="blob" :show-path="showPath">
         <template #filepath-prepend>
           <slot name="prepend"></slot>
         </template>
@@ -88,12 +96,13 @@ export default {
 
       <default-actions
         v-if="showDefaultActions"
-        :raw-path="blob.rawPath"
+        :raw-path="blob.externalStorageUrl || blob.rawPath"
         :active-viewer="viewer"
         :has-render-error="hasRenderError"
         :is-binary="isBinary"
         :environment-name="blob.environmentFormattedExternalUrl"
         :environment-path="blob.environmentExternalUrlForRouteMap"
+        :is-empty="isEmpty"
         @copy="proxyCopyRequest"
       />
     </div>

app/assets/javascripts/blob/components/blob_header_default_actions.vue

@@ -48,6 +48,11 @@ export default {
       required: false,
       default: null,
     },
+    isEmpty: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   computed: {
     downloadUrl() {
@@ -87,6 +92,7 @@ export default {
       icon="copy-to-clipboard"
       category="primary"
       variant="default"
+      class="js-copy-blob-source-btn"
     />
     <gl-button
       v-if="!isBinary"
@@ -100,6 +106,7 @@ export default {
       variant="default"
     />
     <gl-button
+      v-if="!isEmpty"
       v-gl-tooltip.hover
       :aria-label="$options.BTN_DOWNLOAD_TITLE"
       :title="$options.BTN_DOWNLOAD_TITLE"

app/assets/javascripts/blob/components/blob_header_filepath.vue

@@ -15,6 +15,11 @@ export default {
       type: Object,
       required: true,
     },
+    showPath: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
   },
   computed: {
     blobSize() {
@@ -26,6 +31,13 @@ export default {
     showLfsBadge() {
       return this.blob.storedExternally && this.blob.externalStorage === 'lfs';
     },
+    fileName() {
+      if (this.showPath) {
+        return this.blob.path;
+      }
+
+      return this.blob.name;
+    },
   },
 };
 </script>
@@ -33,12 +45,12 @@ export default {
   <div class="file-header-content d-flex align-items-center lh-100">
     <slot name="filepath-prepend"></slot>
 
-    <template v-if="blob.path">
-      <file-icon :file-name="blob.path" :size="16" aria-hidden="true" css-classes="mr-2" />
+    <template v-if="fileName">
+      <file-icon :file-name="fileName" :size="16" aria-hidden="true" css-classes="mr-2" />
       <strong
         class="file-title-name mr-1 js-blob-header-filepath"
         data-qa-selector="file_title_content"
-        >{{ blob.path }}</strong
+        >{{ fileName }}</strong
       >
     </template>
 

app/assets/javascripts/repository/components/blob_content_viewer.vue

@@ -153,7 +153,7 @@ export default {
     },
     blobViewer() {
       const { fileType } = this.viewer;
-      return loadViewer(fileType);
+      return loadViewer(fileType, this.isUsingLfs);
     },
     viewerProps() {
       const { fileType } = this.viewer;
@@ -185,6 +185,9 @@ export default {
         ? this.blobInfo.ideForkAndEditPath
         : this.blobInfo.forkAndEditPath;
     },
+    isUsingLfs() {
+      return this.blobInfo.storedExternally && this.blobInfo.externalStorage === 'lfs';
+    },
   },
   methods: {
     loadLegacyViewer(type) {
@@ -245,10 +248,11 @@ export default {
     <div v-if="blobInfo && !isLoading" class="file-holder">
       <blob-header
         :blob="blobInfo"
-        :hide-viewer-switcher="!hasRichViewer || isBinaryFileType"
+        :hide-viewer-switcher="!hasRichViewer || isBinaryFileType || isUsingLfs"
         :is-binary="isBinaryFileType"
         :active-viewer-type="viewer.type"
         :has-render-error="hasRenderError"
+        :show-path="false"
         @viewer-changed="switchViewer"
       >
         <template #actions>

app/assets/javascripts/repository/components/blob_viewers/index.js

-export const loadViewer = (type) => {
-  switch (type) {
-    case 'empty':
-      return () => import(/* webpackChunkName: 'blob_empty_viewer' */ './empty_viewer.vue');
-    case 'text':
-      return gon.features.highlightJs
-        ? () =>
-            import(
-              /* webpackChunkName: 'blob_text_viewer' */ '~/vue_shared/components/source_viewer.vue'
-            )
-        : null;
-    case 'download':
-      return () => import(/* webpackChunkName: 'blob_download_viewer' */ './download_viewer.vue');
-    case 'image':
-      return () => import(/* webpackChunkName: 'blob_image_viewer' */ './image_viewer.vue');
-    case 'video':
-      return () => import(/* webpackChunkName: 'blob_video_viewer' */ './video_viewer.vue');
-    case 'pdf':
-      return () => import(/* webpackChunkName: 'blob_pdf_viewer' */ './pdf_viewer.vue');
-    default:
-      return null;
+const viewers = {
+  download: () => import('./download_viewer.vue'),
+  image: () => import('./image_viewer.vue'),
+  video: () => import('./video_viewer.vue'),
+  empty: () => import('./empty_viewer.vue'),
+  text: () => import('~/vue_shared/components/source_viewer.vue'),
+  pdf: () => import('./pdf_viewer.vue'),
+  lfs: () => import('./lfs_viewer.vue'),
+};
+
+export const loadViewer = (type, isUsingLfs) => {
+  let viewer = viewers[type];
+
+  if (!viewer && isUsingLfs) {
+    viewer = viewers.lfs;
   }
+
+  return viewer;
 };
 
 export const viewerProps = (type, blob) => {
-  return {
+  const props = {
     text: {
       content: blob.rawTextBlob,
       autoDetect: true, // We'll eventually disable autoDetect and pass the language explicitly to reduce the footprint (https://gitlab.com/gitlab-org/gitlab/-/issues/348145)
@@ -44,5 +40,11 @@ export const viewerProps = (type, blob) => {
       url: blob.rawPath,
       fileSize: blob.rawSize,
     },
-  }[type];
+    lfs: {
+      fileName: blob.name,
+      filePath: blob.rawPath,
+    },
+  };
+
+  return props[type] || props[blob.externalStorage];
 };

app/assets/javascripts/repository/components/blob_viewers/lfs_viewer.vue

+<script>
+import { GlLink, GlSprintf } from '@gitlab/ui';
+import { __ } from '~/locale';
+
+export default {
+  i18n: {
+    lfsText: __(
+      'This content could not be displayed because it is stored in LFS. You can %{linkStart}download it%{linkEnd} instead.',
+    ),
+  },
+  components: {
+    GlLink,
+    GlSprintf,
+  },
+  props: {
+    fileName: {
+      type: String,
+      required: true,
+    },
+    filePath: {
+      type: String,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="gl-text-center gl-py-13 gl-bg-gray-50" data-type="lfs">
+    <gl-sprintf :message="$options.i18n.lfsText">
+      <template #link="{ content }">
+        <gl-link :href="filePath" :download="fileName" target="_blank">{{ content }}</gl-link>
+      </template>
+    </gl-sprintf>
+  </div>
+</template>

app/assets/javascripts/repository/queries/blob_info.query.graphql

@@ -32,6 +32,7 @@ query getBlobInfo($projectPath: ID!, $filePath: String!, $ref: String!) {
           archived
           storedExternally
           externalStorage
+          externalStorageUrl
           rawPath
           replacePath
           pipelineEditorPath

app/assets/javascripts/vue_shared/components/source_viewer.vue

@@ -115,7 +115,12 @@ export default {
 };
 </script>
 <template>
-  <div class="file-content code js-syntax-highlight" :class="$options.userColorScheme">
+  <div
+    class="file-content code js-syntax-highlight blob-content"
+    :class="$options.userColorScheme"
+    data-type="simple"
+    data-qa-selector="blob_viewer_file_content"
+  >
     <line-numbers :lines="lineNumbers" />
     <pre class="code"><code v-safe-html="highlightedContent"></code>
     </pre>

app/presenters/blob_presenter.rb

@@ -125,7 +125,7 @@ class BlobPresenter < Gitlab::View::Presenter::Delegated
   def external_storage_url
     return unless static_objects_external_storage_enabled?
 
-    external_storage_url_or_path(url_helpers.project_raw_url(project, ref_qualified_path))
+    external_storage_url_or_path(url_helpers.project_raw_url(project, ref_qualified_path), project)
   end
 
   private

locale/gitlab.pot

@@ -36578,6 +36578,9 @@ msgstr ""
 msgid "This content could not be displayed because %{reason}. You can %{options} instead."
 msgstr ""
 
+msgid "This content could not be displayed because it is stored in LFS. You can %{linkStart}download it%{linkEnd} instead."
+msgstr ""
+
 msgid "This credential has expired"
 msgstr ""
 

qa/qa/page/component/blob_content.rb

@@ -22,6 +22,10 @@ module QA
             element :copy_contents_button
           end
 
+          base.view 'app/assets/javascripts/vue_shared/components/source_viewer.vue' do
+            element :blob_viewer_file_content
+          end
+
           base.view 'app/views/projects/blob/_header_content.html.haml' do
             element :file_name_content
           end

spec/features/projects/blobs/blob_show_spec.rb

@@ -29,443 +29,421 @@ RSpec.describe 'File blob', :js do
     ).execute
   end
 
-  before do
-    stub_feature_flags(refactor_blob_viewer: false) # This stub will be removed in https://gitlab.com/gitlab-org/gitlab/-/issues/350455
-  end
-
-  context 'Ruby file' do
-    before do
-      visit_blob('files/ruby/popen.rb')
-
-      wait_for_requests
-    end
-
-    it 'displays the blob' do
-      aggregate_failures do
-        # shows highlighted Ruby code
-        expect(page).to have_css(".js-syntax-highlight")
-        expect(page).to have_content("require 'fileutils'")
-
-        # does not show a viewer switcher
-        expect(page).not_to have_selector('.js-blob-viewer-switcher')
-
-        # shows an enabled copy button
-        expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
-
-        # shows a raw button
-        expect(page).to have_link('Open raw')
-      end
-    end
-
-    it 'displays file actions on all screen sizes' do
-      file_actions_selector = '.file-actions'
-
-      resize_screen_sm
-      expect(page).to have_selector(file_actions_selector, visible: true)
-
-      resize_screen_xs
-      expect(page).to have_selector(file_actions_selector, visible: true)
-    end
-  end
-
-  context 'Markdown file' do
-    context 'visiting directly' do
+  context 'with refactor_blob_viewer feature flag enabled' do
+    context 'Ruby file' do
       before do
-        visit_blob('files/markdown/ruby-style-guide.md')
+        visit_blob('files/ruby/popen.rb')
 
         wait_for_requests
       end
 
-      it 'displays the blob using the rich viewer' do
+      it 'displays the blob' do
         aggregate_failures do
-          # hides the simple viewer
-          expect(page).to have_selector('.blob-viewer[data-type="simple"]', visible: false)
-          expect(page).to have_selector('.blob-viewer[data-type="rich"]')
-
-          # shows rendered Markdown
-          expect(page).to have_link("PEP-8")
+          # shows highlighted Ruby code
+          expect(page).to have_css(".js-syntax-highlight")
+          expect(page).to have_content("require 'fileutils'")
 
-          # shows a viewer switcher
-          expect(page).to have_selector('.js-blob-viewer-switcher')
+          # does not show a viewer switcher
+          expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-          # shows a disabled copy button
-          expect(page).to have_selector('.js-copy-blob-source-btn.disabled')
+          # shows an enabled copy button
+          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
 
           # shows a raw button
           expect(page).to have_link('Open raw')
         end
       end
 
-      context 'switching to the simple viewer' do
+      it 'displays file actions on all screen sizes' do
+        file_actions_selector = '.file-actions'
+
+        resize_screen_sm
+        expect(page).to have_selector(file_actions_selector, visible: true)
+
+        resize_screen_xs
+        expect(page).to have_selector(file_actions_selector, visible: true)
+      end
+    end
+
+    context 'Markdown file' do
+      context 'visiting directly' do
         before do
-          find('.js-blob-viewer-switch-btn[data-viewer=simple]').click
+          visit_blob('files/markdown/ruby-style-guide.md')
 
           wait_for_requests
         end
 
-        it 'displays the blob using the simple viewer' do
+        it 'displays the blob using the rich viewer' do
           aggregate_failures do
-            # hides the rich viewer
-            expect(page).to have_selector('.blob-viewer[data-type="simple"]')
-            expect(page).to have_selector('.blob-viewer[data-type="rich"]', visible: false)
+            # hides the simple viewer
+            expect(page).not_to have_selector('.blob-viewer[data-type="simple"]')
+            expect(page).to have_selector('.blob-viewer[data-type="rich"]')
 
-            # shows highlighted Markdown code
-            expect(page).to have_css(".js-syntax-highlight")
-            expect(page).to have_content("[PEP-8](http://www.python.org/dev/peps/pep-0008/)")
+            # shows rendered Markdown
+            expect(page).to have_link("PEP-8")
 
-            # shows an enabled copy button
-            expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+            # shows a viewer switcher
+            expect(page).to have_selector('.js-blob-viewer-switcher')
+
+            # shows a disabled copy button
+            expect(page).to have_selector('.js-copy-blob-source-btn.disabled')
+
+            # shows a raw button
+            expect(page).to have_link('Open raw')
           end
         end
 
-        context 'switching to the rich viewer again' do
+        context 'switching to the simple viewer' do
           before do
-            find('.js-blob-viewer-switch-btn[data-viewer=rich]').click
+            find('.js-blob-viewer-switch-btn[data-viewer=simple]').click
 
             wait_for_requests
           end
 
-          it 'displays the blob using the rich viewer' do
+          it 'displays the blob using the simple viewer' do
             aggregate_failures do
-              # hides the simple viewer
-              expect(page).to have_selector('.blob-viewer[data-type="simple"]', visible: false)
-              expect(page).to have_selector('.blob-viewer[data-type="rich"]')
+              # hides the rich viewer
+              expect(page).to have_selector('.blob-viewer[data-type="simple"]')
+              expect(page).not_to have_selector('.blob-viewer[data-type="rich"]')
+
+              # shows highlighted Markdown code
+              expect(page).to have_css(".js-syntax-highlight")
+              expect(page).to have_content("[PEP-8](http://www.python.org/dev/peps/pep-0008/)")
 
               # shows an enabled copy button
               expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
             end
           end
-        end
-      end
-    end
-
-    context 'when ref switch' do
-      def switch_ref_to(ref_name)
-        first('.qa-branches-select').click # rubocop:disable QA/SelectorUsage
 
-        page.within '.project-refs-form' do
-          click_link ref_name
-          wait_for_requests
-        end
-      end
+          context 'switching to the rich viewer again' do
+            before do
+              find('.js-blob-viewer-switch-btn[data-viewer=rich]').click
 
-      it 'displays single highlighted line number of different ref' do
-        visit_blob('files/js/application.js', anchor: 'L1')
+              wait_for_requests
+            end
 
-        switch_ref_to('feature')
+            it 'displays the blob using the rich viewer' do
+              aggregate_failures do
+                # hides the simple viewer
+                expect(page).not_to have_selector('.blob-viewer[data-type="simple"]')
+                expect(page).to have_selector('.blob-viewer[data-type="rich"]')
 
-        page.within '.blob-content' do
-          expect(find_by_id('LC1')[:class]).to include("hll")
+                # shows a disabled copy button
+                expect(page).to have_selector('.js-copy-blob-source-btn.disabled')
+              end
+            end
+          end
         end
       end
 
-      it 'displays multiple highlighted line numbers of different ref' do
-        visit_blob('files/js/application.js', anchor: 'L1-3')
-
-        switch_ref_to('feature')
+      context 'when ref switch' do
+        def switch_ref_to(ref_name)
+          first('.qa-branches-select').click # rubocop:disable QA/SelectorUsage
 
-        page.within '.blob-content' do
-          expect(find_by_id('LC1')[:class]).to include("hll")
-          expect(find_by_id('LC2')[:class]).to include("hll")
-          expect(find_by_id('LC3')[:class]).to include("hll")
+          page.within '.project-refs-form' do
+            click_link ref_name
+            wait_for_requests
+          end
         end
-      end
 
-      it 'displays no highlighted number of different ref' do
-        Files::UpdateService.new(
-          project,
-          project.first_owner,
-          commit_message: 'Update',
-          start_branch: 'feature',
-          branch_name: 'feature',
-          file_path: 'files/js/application.js',
-          file_content: 'new content'
-        ).execute
+        it 'displays no highlighted number of different ref' do
+          Files::UpdateService.new(
+            project,
+            project.first_owner,
+            commit_message: 'Update',
+            start_branch: 'feature',
+            branch_name: 'feature',
+            file_path: 'files/js/application.js',
+            file_content: 'new content'
+          ).execute
 
-        project.commit('feature').diffs.diff_files.first
+          project.commit('feature').diffs.diff_files.first
 
-        visit_blob('files/js/application.js', anchor: 'L3')
-        switch_ref_to('feature')
+          visit_blob('files/js/application.js', anchor: 'L3')
+          switch_ref_to('feature')
 
-        page.within '.blob-content' do
-          expect(page).not_to have_css('.hll')
+          page.within '.blob-content' do
+            expect(page).not_to have_css('.hll')
+          end
         end
-      end
 
-      context 'successfully change ref of similar name' do
-        before do
-          project.repository.create_branch('dev')
-          project.repository.create_branch('development')
-        end
+        context 'successfully change ref of similar name' do
+          before do
+            project.repository.create_branch('dev')
+            project.repository.create_branch('development')
+          end
 
-        it 'switch ref from longer to shorter ref name' do
-          visit_blob('files/js/application.js', ref: 'development')
-          switch_ref_to('dev')
+          it 'switch ref from longer to shorter ref name' do
+            visit_blob('files/js/application.js', ref: 'development')
+            switch_ref_to('dev')
 
-          aggregate_failures do
-            expect(page.find('.file-title-name').text).to eq('application.js')
-            expect(page).not_to have_css('flash-container')
+            aggregate_failures do
+              expect(page.find('.file-title-name').text).to eq('application.js')
+              expect(page).not_to have_css('flash-container')
+            end
           end
-        end
 
-        it 'switch ref from shorter to longer ref name' do
-          visit_blob('files/js/application.js', ref: 'dev')
-          switch_ref_to('development')
+          it 'switch ref from shorter to longer ref name' do
+            visit_blob('files/js/application.js', ref: 'dev')
+            switch_ref_to('development')
 
-          aggregate_failures do
-            expect(page.find('.file-title-name').text).to eq('application.js')
-            expect(page).not_to have_css('flash-container')
+            aggregate_failures do
+              expect(page.find('.file-title-name').text).to eq('application.js')
+              expect(page).not_to have_css('flash-container')
+            end
           end
         end
-      end
 
-      it 'successfully changes ref when the ref name matches the project name' do
-        project.repository.create_branch(project.name)
+        it 'successfully changes ref when the ref name matches the project name' do
+          project.repository.create_branch(project.name)
 
-        visit_blob('files/js/application.js', ref: project.name)
-        switch_ref_to('master')
+          visit_blob('files/js/application.js', ref: project.name)
+          switch_ref_to('master')
 
-        aggregate_failures do
-          expect(page.find('.file-title-name').text).to eq('application.js')
-          expect(page).not_to have_css('flash-container')
+          aggregate_failures do
+            expect(page.find('.file-title-name').text).to eq('application.js')
+            expect(page).not_to have_css('flash-container')
+          end
         end
       end
     end
 
-    context 'visiting with a line number anchor' do
+    context 'Markdown rendering' do
       before do
-        visit_blob('files/markdown/ruby-style-guide.md', anchor: 'L1')
-      end
+        project.add_maintainer(project.creator)
 
-      it 'displays the blob using the simple viewer' do
-        aggregate_failures do
-          # hides the rich viewer
-          expect(page).to have_selector('.blob-viewer[data-type="simple"]')
-          expect(page).to have_selector('.blob-viewer[data-type="rich"]', visible: false)
+        Files::CreateService.new(
+          project,
+          project.creator,
+          start_branch: 'master',
+          branch_name: 'master',
+          commit_message: "Add RedCarpet and CommonMark Markdown ",
+          file_path: 'files/commonmark/file.md',
+          file_content: "1. one\n  - sublist\n"
+        ).execute
+      end
 
-          # highlights the line in question
-          expect(page).to have_selector('#LC1.hll')
+      context 'when rendering default markdown' do
+        before do
+          visit_blob('files/commonmark/file.md')
 
-          # shows highlighted Markdown code
-          expect(page).to have_css(".js-syntax-highlight")
-          expect(page).to have_content("[PEP-8](http://www.python.org/dev/peps/pep-0008/)")
+          wait_for_requests
+        end
 
-          # shows an enabled copy button
-          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+        it 'renders using CommonMark' do
+          aggregate_failures do
+            expect(page).to have_content("sublist")
+            expect(page).not_to have_xpath("//ol//li//ul")
+          end
         end
       end
     end
-  end
-
-  context 'Markdown rendering' do
-    before do
-      project.add_maintainer(project.creator)
-
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'master',
-        branch_name: 'master',
-        commit_message: "Add RedCarpet and CommonMark Markdown ",
-        file_path: 'files/commonmark/file.md',
-        file_content: "1. one\n  - sublist\n"
-      ).execute
-    end
 
-    context 'when rendering default markdown' do
+    context 'Markdown file (stored in LFS)' do
       before do
-        visit_blob('files/commonmark/file.md')
-
-        wait_for_requests
-      end
+        project.add_maintainer(project.creator)
 
-      it 'renders using CommonMark' do
-        aggregate_failures do
-          expect(page).to have_content("sublist")
-          expect(page).not_to have_xpath("//ol//li//ul")
-        end
+        Files::CreateService.new(
+          project,
+          project.creator,
+          start_branch: 'master',
+          branch_name: 'master',
+          commit_message: "Add Markdown in LFS",
+          file_path: 'files/lfs/file.md',
+          file_content: project.repository.blob_at('master', 'files/lfs/lfs_object.iso').data
+        ).execute
       end
-    end
-  end
-
-  context 'Markdown file (stored in LFS)' do
-    before do
-      project.add_maintainer(project.creator)
-
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'master',
-        branch_name: 'master',
-        commit_message: "Add Markdown in LFS",
-        file_path: 'files/lfs/file.md',
-        file_content: project.repository.blob_at('master', 'files/lfs/lfs_object.iso').data
-      ).execute
-    end
 
-    context 'when LFS is enabled on the project' do
-      before do
-        allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
-        project.update_attribute(:lfs_enabled, true)
+      context 'when LFS is enabled on the project' do
+        before do
+          allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
+          project.update_attribute(:lfs_enabled, true)
 
-        visit_blob('files/lfs/file.md')
+          visit_blob('files/lfs/file.md')
 
-        wait_for_requests
-      end
+          wait_for_requests
+        end
 
-      it 'displays an error' do
-        aggregate_failures do
-          # hides the simple viewer
-          expect(page).to have_selector('.blob-viewer[data-type="simple"]', visible: false)
-          expect(page).to have_selector('.blob-viewer[data-type="rich"]')
+        it 'displays an error' do
+          aggregate_failures do
+            # hides the simple viewer
+            expect(page).not_to have_selector('.blob-viewer[data-type="simple"]')
+            expect(page).not_to have_selector('.blob-viewer[data-type="rich"]')
 
-          # shows an error message
-          expect(page).to have_content('The rendered file could not be displayed because it is stored in LFS. You can download it instead.')
+            # shows an error message
+            expect(page).to have_content('This content could not be displayed because it is stored in LFS. You can download it instead.')
 
-          # shows a viewer switcher
-          expect(page).to have_selector('.js-blob-viewer-switcher')
+            # does not show a viewer switcher
+            expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-          # does not show a copy button
-          expect(page).not_to have_selector('.js-copy-blob-source-btn')
+            # does not show a copy button
+            expect(page).not_to have_selector('.js-copy-blob-source-btn')
 
-          # shows a download button
-          expect(page).to have_link('Download')
+            # shows a download button
+            expect(page).to have_link('Download')
+          end
         end
       end
 
-      context 'switching to the simple viewer' do
+      context 'when LFS is disabled on the project' do
         before do
-          find('.js-blob-viewer-switcher .js-blob-viewer-switch-btn[data-viewer=simple]').click
+          visit_blob('files/lfs/file.md')
 
           wait_for_requests
         end
 
-        it 'displays an error' do
+        it 'displays the blob' do
           aggregate_failures do
-            # hides the rich viewer
-            expect(page).to have_selector('.blob-viewer[data-type="simple"]')
-            expect(page).to have_selector('.blob-viewer[data-type="rich"]', visible: false)
+            # shows text
+            expect(page).to have_content('size 1575078')
 
-            # shows an error message
-            expect(page).to have_content('The source could not be displayed because it is stored in LFS. You can download it instead.')
+            # does not show a viewer switcher
+            expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-            # does not show a copy button
-            expect(page).not_to have_selector('.js-copy-blob-source-btn')
+            # shows an enabled copy button
+            expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+
+            # shows a raw button
+            expect(page).to have_link('Open raw')
           end
         end
       end
     end
 
-    context 'when LFS is disabled on the project' do
+    context 'PDF file' do
       before do
-        visit_blob('files/lfs/file.md')
+        project.add_maintainer(project.creator)
+
+        Files::CreateService.new(
+          project,
+          project.creator,
+          start_branch: 'master',
+          branch_name: 'master',
+          commit_message: "Add PDF",
+          file_path: 'files/test.pdf',
+          file_content: project.repository.blob_at('add-pdf-file', 'files/pdf/test.pdf').data
+        ).execute
+
+        visit_blob('files/test.pdf')
 
         wait_for_requests
       end
 
       it 'displays the blob' do
         aggregate_failures do
-          # shows text
-          expect(page).to have_content('size 1575078')
+          # shows rendered PDF
+          expect(page).to have_selector('.js-pdf-viewer')
 
           # does not show a viewer switcher
           expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-          # shows an enabled copy button
-          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+          # does not show a copy button
+          expect(page).not_to have_selector('.js-copy-blob-source-btn')
 
-          # shows a raw button
-          expect(page).to have_link('Open raw')
+          # shows a download button
+          expect(page).to have_link('Download')
         end
       end
     end
-  end
 
-  context 'PDF file' do
-    before do
-      project.add_maintainer(project.creator)
+    context 'Jupiter Notebook file' do
+      before do
+        project.add_maintainer(project.creator)
+
+        Files::CreateService.new(
+          project,
+          project.creator,
+          start_branch: 'master',
+          branch_name: 'master',
+          commit_message: "Add Jupiter Notebook",
+          file_path: 'files/basic.ipynb',
+          file_content: project.repository.blob_at('add-ipython-files', 'files/ipython/basic.ipynb').data
+        ).execute
 
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'master',
-        branch_name: 'master',
-        commit_message: "Add PDF",
-        file_path: 'files/test.pdf',
-        file_content: project.repository.blob_at('add-pdf-file', 'files/pdf/test.pdf').data
-      ).execute
+        visit_blob('files/basic.ipynb')
 
-      visit_blob('files/test.pdf')
+        wait_for_requests
+      end
 
-      wait_for_requests
-    end
+      it 'displays the blob' do
+        aggregate_failures do
+          # shows rendered notebook
+          expect(page).to have_selector('.js-notebook-viewer-mounted')
+
+          # does show a viewer switcher
+          expect(page).to have_selector('.js-blob-viewer-switcher')
 
-    it 'displays the blob' do
-      aggregate_failures do
-        # shows rendered PDF
-        expect(page).to have_selector('.js-pdf-viewer')
+          # show a disabled copy button
+          expect(page).to have_selector('.js-copy-blob-source-btn.disabled')
 
-        # does not show a viewer switcher
-        expect(page).not_to have_selector('.js-blob-viewer-switcher')
+          # shows a raw button
+          expect(page).to have_link('Open raw')
 
-        # does not show a copy button
-        expect(page).not_to have_selector('.js-copy-blob-source-btn')
+          # shows a download button
+          expect(page).to have_link('Download')
 
-        # shows a download button
-        expect(page).to have_link('Download')
+          # shows the rendered notebook
+          expect(page).to have_content('test')
+        end
       end
     end
-  end
 
-  context 'Jupiter Notebook file' do
-    before do
-      project.add_maintainer(project.creator)
+    context 'ISO file (stored in LFS)' do
+      context 'when LFS is enabled on the project' do
+        before do
+          allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
+          project.update_attribute(:lfs_enabled, true)
 
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'master',
-        branch_name: 'master',
-        commit_message: "Add Jupiter Notebook",
-        file_path: 'files/basic.ipynb',
-        file_content: project.repository.blob_at('add-ipython-files', 'files/ipython/basic.ipynb').data
-      ).execute
+          visit_blob('files/lfs/lfs_object.iso')
 
-      visit_blob('files/basic.ipynb')
+          wait_for_requests
+        end
 
-      wait_for_requests
-    end
+        it 'displays the blob' do
+          aggregate_failures do
+            # shows a download link
+            expect(page).to have_link('Download (1.50 MiB)')
+
+            # does not show a viewer switcher
+            expect(page).not_to have_selector('.js-blob-viewer-switcher')
+
+            # does not show a copy button
+            expect(page).not_to have_selector('.js-copy-blob-source-btn')
+
+            # shows a download button
+            expect(page).to have_link('Download')
+          end
+        end
+      end
 
-    it 'displays the blob' do
-      aggregate_failures do
-        # shows rendered notebook
-        expect(page).to have_selector('.js-notebook-viewer-mounted')
+      context 'when LFS is disabled on the project' do
+        before do
+          visit_blob('files/lfs/lfs_object.iso')
 
-        # does show a viewer switcher
-        expect(page).to have_selector('.js-blob-viewer-switcher')
+          wait_for_requests
+        end
 
-        # show a disabled copy button
-        expect(page).to have_selector('.js-copy-blob-source-btn.disabled')
+        it 'displays the blob' do
+          aggregate_failures do
+            # shows text
+            expect(page).to have_content('size 1575078')
 
-        # shows a raw button
-        expect(page).to have_link('Open raw')
+            # does not show a viewer switcher
+            expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-        # shows a download button
-        expect(page).to have_link('Download')
+            # shows an enabled copy button
+            expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
 
-        # shows the rendered notebook
-        expect(page).to have_content('test')
+            # shows a raw button
+            expect(page).to have_link('Open raw')
+          end
+        end
       end
     end
-  end
 
-  context 'ISO file (stored in LFS)' do
-    context 'when LFS is enabled on the project' do
+    context 'ZIP file' do
       before do
-        allow(Gitlab.config.lfs).to receive(:enabled).and_return(true)
-        project.update_attribute(:lfs_enabled, true)
-
-        visit_blob('files/lfs/lfs_object.iso')
+        visit_blob('Gemfile.zip')
 
         wait_for_requests
       end
@@ -473,7 +451,7 @@ RSpec.describe 'File blob', :js do
       it 'displays the blob' do
         aggregate_failures do
           # shows a download link
-          expect(page).to have_link('Download (1.5 MB)')
+          expect(page).to have_link('Download (2.11 KiB)')
 
           # does not show a viewer switcher
           expect(page).not_to have_selector('.js-blob-viewer-switcher')
@@ -487,578 +465,703 @@ RSpec.describe 'File blob', :js do
       end
     end
 
-    context 'when LFS is disabled on the project' do
+    context 'empty file' do
       before do
-        visit_blob('files/lfs/lfs_object.iso')
+        project.add_maintainer(project.creator)
+
+        Files::CreateService.new(
+          project,
+          project.creator,
+          start_branch: 'master',
+          branch_name: 'master',
+          commit_message: "Add empty file",
+          file_path: 'files/empty.md',
+          file_content: ''
+        ).execute
+
+        visit_blob('files/empty.md')
 
         wait_for_requests
       end
 
-      it 'displays the blob' do
+      it 'displays an error' do
         aggregate_failures do
-          # shows text
-          expect(page).to have_content('size 1575078')
+          # shows an error message
+          expect(page).to have_content('Empty file')
 
           # does not show a viewer switcher
           expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-          # shows an enabled copy button
-          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+          # does not show a copy button
+          expect(page).not_to have_selector('.js-copy-blob-source-btn')
 
-          # shows a raw button
-          expect(page).to have_link('Open raw')
+          # does not show a download or raw button
+          expect(page).not_to have_link('Download')
+          expect(page).not_to have_link('Open raw')
         end
       end
     end
-  end
-
-  context 'ZIP file' do
-    before do
-      visit_blob('Gemfile.zip')
-
-      wait_for_requests
-    end
-
-    it 'displays the blob' do
-      aggregate_failures do
-        # shows a download link
-        expect(page).to have_link('Download (2.11 KB)')
-
-        # does not show a viewer switcher
-        expect(page).not_to have_selector('.js-blob-viewer-switcher')
 
-        # does not show a copy button
-        expect(page).not_to have_selector('.js-copy-blob-source-btn')
+    context 'files with auxiliary viewers' do
+      describe '.gitlab-ci.yml' do
+        before do
+          project.add_maintainer(project.creator)
 
-        # shows a download button
-        expect(page).to have_link('Download')
-      end
-    end
-  end
+          Files::CreateService.new(
+            project,
+            project.creator,
+            start_branch: 'master',
+            branch_name: 'master',
+            commit_message: "Add .gitlab-ci.yml",
+            file_path: '.gitlab-ci.yml',
+            file_content: File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
+          ).execute
 
-  context 'empty file' do
-    before do
-      project.add_maintainer(project.creator)
+          visit_blob('.gitlab-ci.yml')
+        end
 
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'master',
-        branch_name: 'master',
-        commit_message: "Add empty file",
-        file_path: 'files/empty.md',
-        file_content: ''
-      ).execute
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            # shows that configuration is valid
+            expect(page).to have_content('This GitLab CI configuration is valid.')
 
-      visit_blob('files/empty.md')
+            # shows a learn more link
+            expect(page).to have_link('Learn more')
+          end
+        end
+      end
 
-      wait_for_requests
-    end
+      describe '.gitlab/route-map.yml' do
+        before do
+          project.add_maintainer(project.creator)
 
-    it 'displays an error' do
-      aggregate_failures do
-        # shows an error message
-        expect(page).to have_content('Empty file')
+          Files::CreateService.new(
+            project,
+            project.creator,
+            start_branch: 'master',
+            branch_name: 'master',
+            commit_message: "Add .gitlab/route-map.yml",
+            file_path: '.gitlab/route-map.yml',
+            file_content: <<-MAP.strip_heredoc
+              # Team data
+              - source: 'data/team.yml'
+                public: 'team/'
+            MAP
+          ).execute
 
-        # does not show a viewer switcher
-        expect(page).not_to have_selector('.js-blob-viewer-switcher')
+          visit_blob('.gitlab/route-map.yml')
+        end
 
-        # does not show a copy button
-        expect(page).not_to have_selector('.js-copy-blob-source-btn')
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            # shows that map is valid
+            expect(page).to have_content('This Route Map is valid.')
 
-        # does not show a download or raw button
-        expect(page).not_to have_link('Download')
-        expect(page).not_to have_link('Open raw')
+            # shows a learn more link
+            expect(page).to have_link('Learn more')
+          end
+        end
       end
-    end
-  end
 
-  context 'binary file that appears to be text in the first 1024 bytes' do
-    before do
-      visit_blob('encoding/binary-1.bin', ref: 'binary-encoding')
-    end
+      describe '.gitlab/dashboards/custom-dashboard.yml' do
+        before do
+          project.add_maintainer(project.creator)
+
+          Files::CreateService.new(
+            project,
+            project.creator,
+            start_branch: 'master',
+            branch_name: 'master',
+            commit_message: "Add .gitlab/dashboards/custom-dashboard.yml",
+            file_path: '.gitlab/dashboards/custom-dashboard.yml',
+            file_content: file_content
+          ).execute
+        end
+
+        context 'with metrics_dashboard_exhaustive_validations feature flag off' do
+          before do
+            stub_feature_flags(metrics_dashboard_exhaustive_validations: false)
+            visit_blob('.gitlab/dashboards/custom-dashboard.yml')
+          end
+
+          context 'valid dashboard file' do
+            let(:file_content) { File.read(Rails.root.join('config/prometheus/common_metrics.yml')) }
+
+            it 'displays an auxiliary viewer' do
+              aggregate_failures do
+                # shows that dashboard yaml is valid
+                expect(page).to have_content('Metrics Dashboard YAML definition is valid.')
+
+                # shows a learn more link
+                expect(page).to have_link('Learn more')
+              end
+            end
+          end
+
+          context 'invalid dashboard file' do
+            let(:file_content) { "dashboard: 'invalid'" }
+
+            it 'displays an auxiliary viewer' do
+              aggregate_failures do
+                # shows that dashboard yaml is invalid
+                expect(page).to have_content('Metrics Dashboard YAML definition is invalid:')
+                expect(page).to have_content("panel_groups: should be an array of panel_groups objects")
+
+                # shows a learn more link
+                expect(page).to have_link('Learn more')
+              end
+            end
+          end
+        end
+
+        context 'with metrics_dashboard_exhaustive_validations feature flag on' do
+          before do
+            stub_feature_flags(metrics_dashboard_exhaustive_validations: true)
+            visit_blob('.gitlab/dashboards/custom-dashboard.yml')
+          end
 
-    it 'displays the blob' do
-      aggregate_failures do
-        # shows a download link
-        expect(page).to have_link('Download (23.8 KB)')
+          context 'valid dashboard file' do
+            let(:file_content) { File.read(Rails.root.join('config/prometheus/common_metrics.yml')) }
 
-        # does not show a viewer switcher
-        expect(page).not_to have_selector('.js-blob-viewer-switcher')
+            it 'displays an auxiliary viewer' do
+              aggregate_failures do
+                # shows that dashboard yaml is valid
+                expect(page).to have_content('Metrics Dashboard YAML definition is valid.')
 
-        # The specs below verify an arguably incorrect result, but since we only
-        # learn that the file is not actually text once the text viewer content
-        # is loaded asynchronously, there is no straightforward way to get these
-        # synchronously loaded elements to display correctly.
-        #
-        # Clicking the copy button will result in nothing being copied.
-        # Clicking the raw button will result in the binary file being downloaded,
-        # as expected.
+                # shows a learn more link
+                expect(page).to have_link('Learn more')
+              end
+            end
+          end
 
-        # shows an enabled copy button, incorrectly
-        expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+          context 'invalid dashboard file' do
+            let(:file_content) { "dashboard: 'invalid'" }
+
+            it 'displays an auxiliary viewer' do
+              aggregate_failures do
+                # shows that dashboard yaml is invalid
+                expect(page).to have_content('Metrics Dashboard YAML definition is invalid:')
+                expect(page).to have_content("root is missing required keys: panel_groups")
 
-        # shows a raw button, incorrectly
-        expect(page).to have_link('Open raw')
+                # shows a learn more link
+                expect(page).to have_link('Learn more')
+              end
+            end
+          end
+        end
       end
-    end
-  end
 
-  context 'files with auxiliary viewers' do
-    before do
-      stub_feature_flags(refactor_blob_viewer: true)
-    end
+      context 'LICENSE' do
+        before do
+          visit_blob('LICENSE')
+        end
 
-    describe '.gitlab-ci.yml' do
-      before do
-        project.add_maintainer(project.creator)
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            # shows license
+            expect(page).to have_content('This project is licensed under the MIT License.')
 
-        Files::CreateService.new(
-          project,
-          project.creator,
-          start_branch: 'master',
-          branch_name: 'master',
-          commit_message: "Add .gitlab-ci.yml",
-          file_path: '.gitlab-ci.yml',
-          file_content: File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
-        ).execute
+            # shows a learn more link
+            expect(page).to have_link('Learn more', href: 'http://choosealicense.com/licenses/mit/')
+          end
+        end
+      end
+
+      context '*.gemspec' do
+        before do
+          project.add_maintainer(project.creator)
 
-        visit_blob('.gitlab-ci.yml')
+          Files::CreateService.new(
+            project,
+            project.creator,
+            start_branch: 'master',
+            branch_name: 'master',
+            commit_message: "Add activerecord.gemspec",
+            file_path: 'activerecord.gemspec',
+            file_content: <<-SPEC.strip_heredoc
+              Gem::Specification.new do |s|
+                s.platform    = Gem::Platform::RUBY
+                s.name        = "activerecord"
+              end
+            SPEC
+          ).execute
+
+          visit_blob('activerecord.gemspec')
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            # shows names of dependency manager and package
+            expect(page).to have_content('This project manages its dependencies using RubyGems.')
+
+            # shows a learn more link
+            expect(page).to have_link('Learn more', href: 'https://rubygems.org/')
+          end
+        end
       end
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          # shows that configuration is valid
-          expect(page).to have_content('This GitLab CI configuration is valid.')
+      context 'CONTRIBUTING.md' do
+        before do
+          file_name = 'CONTRIBUTING.md'
 
-          # shows a learn more link
-          expect(page).to have_link('Learn more')
+          create_file(file_name, '## Contribution guidelines')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("After you've reviewed these contribution guidelines, you'll be all set to contribute to this project.")
+          end
         end
       end
-    end
 
-    describe '.gitlab/route-map.yml' do
-      before do
-        project.add_maintainer(project.creator)
+      context 'CHANGELOG.md' do
+        before do
+          file_name = 'CHANGELOG.md'
 
-        Files::CreateService.new(
-          project,
-          project.creator,
-          start_branch: 'master',
-          branch_name: 'master',
-          commit_message: "Add .gitlab/route-map.yml",
-          file_path: '.gitlab/route-map.yml',
-          file_content: <<-MAP.strip_heredoc
-            # Team data
-            - source: 'data/team.yml'
-              public: 'team/'
-          MAP
-        ).execute
+          create_file(file_name, '## Changelog for v1.0.0')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("To find the state of this project's repository at the time of any of these versions, check out the tags.")
+          end
+        end
+      end
+
+      context 'Cargo.toml' do
+        before do
+          file_name = 'Cargo.toml'
+
+          create_file(file_name, '
+              [package]
+              name = "hello_world" # the name of the package
+              version = "0.1.0"    # the current version, obeying semver
+              authors = ["Alice <a@example.com>", "Bob <b@example.com>"]
+            ')
+          visit_blob(file_name)
+        end
 
-        visit_blob('.gitlab/route-map.yml')
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Cargo.")
+          end
+        end
+      end
+
+      context 'Cartfile' do
+        before do
+          file_name = 'Cartfile'
+
+          create_file(file_name, '
+              gitlab "Alamofire/Alamofire" == 4.9.0
+              gitlab "Alamofire/AlamofireImage" ~> 3.4
+            ')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Carthage.")
+          end
+        end
+      end
+
+      context 'composer.json' do
+        before do
+          file_name = 'composer.json'
+
+          create_file(file_name, '
+              {
+                "license": "MIT"
+              }
+            ')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Composer.")
+          end
+        end
+      end
+
+      context 'Gemfile' do
+        before do
+          file_name = 'Gemfile'
+
+          create_file(file_name, '
+              source "https://rubygems.org"
+
+              # Gems here
+            ')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Bundler.")
+          end
+        end
+      end
+
+      context 'Godeps.json' do
+        before do
+          file_name = 'Godeps.json'
+
+          create_file(file_name, '
+              {
+                "GoVersion": "go1.6"
+              }
+            ')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using godep.")
+          end
+        end
+      end
+
+      context 'go.mod' do
+        before do
+          file_name = 'go.mod'
+
+          create_file(file_name, '
+              module example.com/mymodule
+
+              go 1.14
+            ')
+          visit_blob(file_name)
+        end
+
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Go Modules.")
+          end
+        end
       end
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          # shows that map is valid
-          expect(page).to have_content('This Route Map is valid.')
+      context 'package.json' do
+        before do
+          file_name = 'package.json'
 
-          # shows a learn more link
-          expect(page).to have_link('Learn more')
+          create_file(file_name, '
+              {
+                "name": "my-awesome-package",
+                "version": "1.0.0"
+              }
+            ')
+          visit_blob(file_name)
         end
-      end
-    end
-
-    describe '.gitlab/dashboards/custom-dashboard.yml' do
-      before do
-        project.add_maintainer(project.creator)
 
-        Files::CreateService.new(
-          project,
-          project.creator,
-          start_branch: 'master',
-          branch_name: 'master',
-          commit_message: "Add .gitlab/dashboards/custom-dashboard.yml",
-          file_path: '.gitlab/dashboards/custom-dashboard.yml',
-          file_content: file_content
-        ).execute
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using npm.")
+          end
+        end
       end
 
-      context 'with metrics_dashboard_exhaustive_validations feature flag off' do
+      context 'podfile' do
         before do
-          stub_feature_flags(metrics_dashboard_exhaustive_validations: false)
-          visit_blob('.gitlab/dashboards/custom-dashboard.yml')
-        end
-
-        context 'valid dashboard file' do
-          let(:file_content) { File.read(Rails.root.join('config/prometheus/common_metrics.yml')) }
+          file_name = 'podfile'
 
-          it 'displays an auxiliary viewer' do
-            aggregate_failures do
-              # shows that dashboard yaml is valid
-              expect(page).to have_content('Metrics Dashboard YAML definition is valid.')
+          create_file(file_name, 'platform :ios, "8.0"')
+          visit_blob(file_name)
+        end
 
-              # shows a learn more link
-              expect(page).to have_link('Learn more')
-            end
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using CocoaPods.")
           end
         end
+      end
 
-        context 'invalid dashboard file' do
-          let(:file_content) { "dashboard: 'invalid'" }
+      context 'test.podspec' do
+        before do
+          file_name = 'test.podspec'
 
-          it 'displays an auxiliary viewer' do
-            aggregate_failures do
-              # shows that dashboard yaml is invalid
-              expect(page).to have_content('Metrics Dashboard YAML definition is invalid:')
-              expect(page).to have_content("panel_groups: should be an array of panel_groups objects")
+          create_file(file_name, '
+              Pod::Spec.new do |s|
+                s.name = "TensorFlowLiteC"
+            ')
+          visit_blob(file_name)
+        end
 
-              # shows a learn more link
-              expect(page).to have_link('Learn more')
-            end
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using CocoaPods.")
           end
         end
       end
 
-      context 'with metrics_dashboard_exhaustive_validations feature flag on' do
+      context 'JSON.podspec.json' do
         before do
-          stub_feature_flags(metrics_dashboard_exhaustive_validations: true)
-          visit_blob('.gitlab/dashboards/custom-dashboard.yml')
-        end
-
-        context 'valid dashboard file' do
-          let(:file_content) { File.read(Rails.root.join('config/prometheus/common_metrics.yml')) }
+          file_name = 'JSON.podspec.json'
 
-          it 'displays an auxiliary viewer' do
-            aggregate_failures do
-              # shows that dashboard yaml is valid
-              expect(page).to have_content('Metrics Dashboard YAML definition is valid.')
+          create_file(file_name, '
+              {
+                "name": "JSON"
+              }
+            ')
+          visit_blob(file_name)
+        end
 
-              # shows a learn more link
-              expect(page).to have_link('Learn more')
-            end
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using CocoaPods.")
           end
         end
+      end
 
-        context 'invalid dashboard file' do
-          let(:file_content) { "dashboard: 'invalid'" }
+      context 'requirements.txt' do
+        before do
+          file_name = 'requirements.txt'
 
-          it 'displays an auxiliary viewer' do
-            aggregate_failures do
-              # shows that dashboard yaml is invalid
-              expect(page).to have_content('Metrics Dashboard YAML definition is invalid:')
-              expect(page).to have_content("root is missing required keys: panel_groups")
+          create_file(file_name, 'Project requirements')
+          visit_blob(file_name)
+        end
 
-              # shows a learn more link
-              expect(page).to have_link('Learn more')
-            end
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using pip.")
           end
         end
       end
-    end
 
-    context 'LICENSE' do
-      before do
-        visit_blob('LICENSE')
-      end
+      context 'yarn.lock' do
+        before do
+          file_name = 'yarn.lock'
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          # shows license
-          expect(page).to have_content('This project is licensed under the MIT License.')
+          create_file(file_name, '
+              # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+              # yarn lockfile v1
+            ')
+          visit_blob(file_name)
+        end
 
-          # shows a learn more link
-          expect(page).to have_link('Learn more', href: 'http://choosealicense.com/licenses/mit/')
+        it 'displays an auxiliary viewer' do
+          aggregate_failures do
+            expect(page).to have_content("This project manages its dependencies using Yarn.")
+          end
         end
       end
     end
 
-    context '*.gemspec' do
+    context 'realtime pipelines' do
       before do
-        project.add_maintainer(project.creator)
-
         Files::CreateService.new(
           project,
           project.creator,
-          start_branch: 'master',
-          branch_name: 'master',
-          commit_message: "Add activerecord.gemspec",
-          file_path: 'activerecord.gemspec',
-          file_content: <<-SPEC.strip_heredoc
-            Gem::Specification.new do |s|
-              s.platform    = Gem::Platform::RUBY
-              s.name        = "activerecord"
-            end
-          SPEC
+          start_branch: 'feature',
+          branch_name: 'feature',
+          commit_message: "Add ruby file",
+          file_path: 'files/ruby/test.rb',
+          file_content: "# Awesome content"
         ).execute
 
-        visit_blob('activerecord.gemspec')
+        create(:ci_pipeline, status: 'running', project: project, ref: 'feature', sha: project.commit('feature').sha)
+        visit_blob('files/ruby/test.rb', ref: 'feature')
       end
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          # shows names of dependency manager and package
-          expect(page).to have_content('This project manages its dependencies using RubyGems.')
-
-          # shows a learn more link
-          expect(page).to have_link('Learn more', href: 'https://rubygems.org/')
+      it 'shows the realtime pipeline status' do
+        page.within('.commit-actions') do
+          expect(page).to have_css('.ci-status-icon')
+          expect(page).to have_css('.ci-status-icon-running')
+          expect(page).to have_css('.js-ci-status-icon-running')
         end
       end
     end
 
-    context 'CONTRIBUTING.md' do
-      before do
-        file_name = 'CONTRIBUTING.md'
+    context 'for subgroups' do
+      let(:group) { create(:group) }
+      let(:subgroup) { create(:group, parent: group) }
+      let(:project) { create(:project, :public, :repository, group: subgroup) }
 
-        create_file(file_name, '## Contribution guidelines')
-        visit_blob(file_name)
-      end
+      it 'renders tree table without errors' do
+        visit_blob('README.md')
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("After you've reviewed these contribution guidelines, you'll be all set to contribute to this project.")
-        end
+        expect(page).to have_selector('.file-content')
+        expect(page).not_to have_selector('.flash-alert')
       end
-    end
 
-    context 'CHANGELOG.md' do
-      before do
-        file_name = 'CHANGELOG.md'
-
-        create_file(file_name, '## Changelog for v1.0.0')
-        visit_blob(file_name)
-      end
+      it 'displays a GPG badge' do
+        visit_blob('CONTRIBUTING.md', ref: '33f3729a45c02fc67d00adb1b8bca394b0e761d9')
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("To find the state of this project's repository at the time of any of these versions, check out the tags.")
-        end
+        expect(page).not_to have_selector '.gpg-status-box.js-loading-gpg-badge'
+        expect(page).to have_selector '.gpg-status-box.invalid'
       end
     end
 
-    context 'Cargo.toml' do
-      before do
-        file_name = 'Cargo.toml'
-
-        create_file(file_name, '
-            [package]
-            name = "hello_world" # the name of the package
-            version = "0.1.0"    # the current version, obeying semver
-            authors = ["Alice <a@example.com>", "Bob <b@example.com>"]
-          ')
-        visit_blob(file_name)
-      end
+    context 'on signed merge commit' do
+      it 'displays a GPG badge' do
+        visit_blob('conflicting-file.md', ref: '6101e87e575de14b38b4e1ce180519a813671e10')
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Cargo.")
-        end
+        expect(page).not_to have_selector '.gpg-status-box.js-loading-gpg-badge'
+        expect(page).to have_selector '.gpg-status-box.invalid'
       end
     end
 
-    context 'Cartfile' do
+    context 'when static objects external storage is enabled' do
       before do
-        file_name = 'Cartfile'
-
-        create_file(file_name, '
-            gitlab "Alamofire/Alamofire" == 4.9.0
-            gitlab "Alamofire/AlamofireImage" ~> 3.4
-          ')
-        visit_blob(file_name)
+        stub_application_setting(static_objects_external_storage_url: 'https://cdn.gitlab.com')
       end
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Carthage.")
+      context 'public project' do
+        before do
+          visit_blob('README.md')
         end
-      end
-    end
-
-    context 'composer.json' do
-      before do
-        file_name = 'composer.json'
 
-        create_file(file_name, '
-            {
-              "license": "MIT"
-            }
-          ')
-        visit_blob(file_name)
-      end
+        it 'shows open raw and download buttons with external storage URL prepended to their href' do
+          path = project_raw_path(project, 'master/README.md')
+          raw_uri = "https://cdn.gitlab.com#{path}"
+          download_uri = "https://cdn.gitlab.com#{path}?inline=false"
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Composer.")
+          aggregate_failures do
+            expect(page).to have_link 'Open raw', href: raw_uri
+            expect(page).to have_link 'Download', href: download_uri
+          end
         end
       end
     end
+  end
 
-    context 'Gemfile' do
-      before do
-        file_name = 'Gemfile'
+  context 'with refactor_blob_viewer feature flag disabled' do
+    before do
+      stub_feature_flags(refactor_blob_viewer: false)
+    end
 
-        create_file(file_name, '
-            source "https://rubygems.org"
+    context 'when ref switch' do
+      # We need to unsre that this test runs with the refactor_blob_viewer feature flag enabled
+      # This will be addressed in https://gitlab.com/gitlab-org/gitlab/-/issues/351558
 
-            # Gems here
-          ')
-        visit_blob(file_name)
-      end
+      def switch_ref_to(ref_name)
+        first('.qa-branches-select').click # rubocop:disable QA/SelectorUsage
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Bundler.")
+        page.within '.project-refs-form' do
+          click_link ref_name
+          wait_for_requests
         end
       end
-    end
 
-    context 'Godeps.json' do
-      before do
-        file_name = 'Godeps.json'
+      context 'when highlighting lines' do
+        it 'displays single highlighted line number of different ref' do
+          visit_blob('files/js/application.js', anchor: 'L1')
 
-        create_file(file_name, '
-            {
-              "GoVersion": "go1.6"
-            }
-          ')
-        visit_blob(file_name)
-      end
+          switch_ref_to('feature')
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using godep.")
+          page.within '.blob-content' do
+            expect(find_by_id('LC1')[:class]).to include("hll")
+          end
         end
-      end
-    end
 
-    context 'go.mod' do
-      before do
-        file_name = 'go.mod'
-
-        create_file(file_name, '
-            module example.com/mymodule
+        it 'displays multiple highlighted line numbers of different ref' do
+          visit_blob('files/js/application.js', anchor: 'L1-3')
 
-            go 1.14
-          ')
-        visit_blob(file_name)
-      end
+          switch_ref_to('feature')
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Go Modules.")
+          page.within '.blob-content' do
+            expect(find_by_id('LC1')[:class]).to include("hll")
+            expect(find_by_id('LC2')[:class]).to include("hll")
+            expect(find_by_id('LC3')[:class]).to include("hll")
+          end
         end
       end
     end
 
-    context 'package.json' do
-      before do
-        file_name = 'package.json'
+    context 'visiting with a line number anchor' do
+      # We need to unsre that this test runs with the refactor_blob_viewer feature flag enabled
+      # This will be addressed in https://gitlab.com/gitlab-org/gitlab/-/issues/351558
 
-        create_file(file_name, '
-            {
-              "name": "my-awesome-package",
-              "version": "1.0.0"
-            }
-          ')
-        visit_blob(file_name)
+      before do
+        visit_blob('files/markdown/ruby-style-guide.md', anchor: 'L1')
       end
 
-      it 'displays an auxiliary viewer' do
+      it 'displays the blob using the simple viewer' do
         aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using npm.")
-        end
-      end
-    end
+          # hides the rich viewer
+          expect(page).to have_selector('.blob-viewer[data-type="simple"]')
+          expect(page).not_to have_selector('.blob-viewer[data-type="rich"]')
 
-    context 'podfile' do
-      before do
-        file_name = 'podfile'
+          # highlights the line in question
+          expect(page).to have_selector('#LC1.hll')
 
-        create_file(file_name, 'platform :ios, "8.0"')
-        visit_blob(file_name)
-      end
+          # shows highlighted Markdown code
+          expect(page).to have_css(".js-syntax-highlight")
+          expect(page).to have_content("[PEP-8](http://www.python.org/dev/peps/pep-0008/)")
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using CocoaPods.")
+          # shows an enabled copy button
+          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
         end
       end
     end
 
-    context 'test.podspec' do
-      before do
-        file_name = 'test.podspec'
+    context 'binary file that appears to be text in the first 1024 bytes' do
+      # We need to unsre that this test runs with the refactor_blob_viewer feature flag enabled
+      # This will be addressed in https://gitlab.com/gitlab-org/gitlab/-/issues/351559
 
-        create_file(file_name, '
-            Pod::Spec.new do |s|
-              s.name = "TensorFlowLiteC"
-          ')
-        visit_blob(file_name)
+      before do
+        visit_blob('encoding/binary-1.bin', ref: 'binary-encoding')
       end
-
-      it 'displays an auxiliary viewer' do
+      it 'displays the blob' do
         aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using CocoaPods.")
+          # shows a download link
+          expect(page).to have_link('Download (23.8 KB)')
+          # does not show a viewer switcher
+          expect(page).not_to have_selector('.js-blob-viewer-switcher')
+          # The specs below verify an arguably incorrect result, but since we only
+          # learn that the file is not actually text once the text viewer content
+          # is loaded asynchronously, there is no straightforward way to get these
+          # synchronously loaded elements to display correctly.
+          #
+          # Clicking the copy button will result in nothing being copied.
+          # Clicking the raw button will result in the binary file being downloaded,
+          # as expected.
+          # shows an enabled copy button, incorrectly
+          expect(page).to have_selector('.js-copy-blob-source-btn:not(.disabled)')
+          # shows a raw button, incorrectly
+          expect(page).to have_link('Open raw')
         end
       end
     end
 
-    context 'JSON.podspec.json' do
-      before do
-        file_name = 'JSON.podspec.json'
-
-        create_file(file_name, '
-            {
-              "name": "JSON"
-            }
-          ')
-        visit_blob(file_name)
-      end
+    context 'when static objects external storage is enabled' do
+      # We need to unsre that this test runs with the refactor_blob_viewer feature flag enabled
+      # This will be addressed in https://gitlab.com/gitlab-org/gitlab/-/issues/351555
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using CocoaPods.")
-        end
+      before do
+        stub_application_setting(static_objects_external_storage_url: 'https://cdn.gitlab.com')
       end
-    end
 
-    context 'requirements.txt' do
-      before do
-        file_name = 'requirements.txt'
+      context 'private project' do
+        let_it_be(:project) { create(:project, :repository, :private) }
+        let_it_be(:user) { create(:user) }
 
-        create_file(file_name, 'Project requirements')
-        visit_blob(file_name)
-      end
+        before do
+          project.add_developer(user)
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using pip.")
+          sign_in(user)
+          visit_blob('README.md')
         end
-      end
-    end
-
-    context 'yarn.lock' do
-      before do
-        file_name = 'yarn.lock'
 
-        create_file(file_name, '
-            # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-            # yarn lockfile v1
-          ')
-        visit_blob(file_name)
-      end
+        it 'shows open raw and download buttons with external storage URL prepended and user token appended to their href' do
+          path = project_raw_path(project, 'master/README.md')
+          raw_uri = "https://cdn.gitlab.com#{path}?token=#{user.static_object_token}"
+          download_uri = "https://cdn.gitlab.com#{path}?inline=false&token=#{user.static_object_token}"
 
-      it 'displays an auxiliary viewer' do
-        aggregate_failures do
-          expect(page).to have_content("This project manages its dependencies using Yarn.")
+          aggregate_failures do
+            expect(page).to have_link 'Open raw', href: raw_uri
+            expect(page).to have_link 'Download', href: download_uri
+          end
         end
       end
     end
 
-    context 'when refactor_blob_viewer is disabled' do
-      before do
-        stub_feature_flags(refactor_blob_viewer: false)
-      end
+    context 'files with auxiliary viewers' do
+      # This context is the same as the other 'files with auxiliary viewers' in this file, we just ensure that the auxiliary viewers still work this the refactor_blob_viewer disabled
+      # It should be safe to remove once we rollout the refactored blob viewer
 
       describe '.gitlab-ci.yml' do
         before do
@@ -1554,104 +1657,4 @@ RSpec.describe 'File blob', :js do
       end
     end
   end
-
-  context 'realtime pipelines' do
-    before do
-      Files::CreateService.new(
-        project,
-        project.creator,
-        start_branch: 'feature',
-        branch_name: 'feature',
-        commit_message: "Add ruby file",
-        file_path: 'files/ruby/test.rb',
-        file_content: "# Awesome content"
-      ).execute
-
-      create(:ci_pipeline, status: 'running', project: project, ref: 'feature', sha: project.commit('feature').sha)
-      visit_blob('files/ruby/test.rb', ref: 'feature')
-    end
-
-    it 'shows the realtime pipeline status' do
-      page.within('.commit-actions') do
-        expect(page).to have_css('.ci-status-icon')
-        expect(page).to have_css('.ci-status-icon-running')
-        expect(page).to have_css('.js-ci-status-icon-running')
-      end
-    end
-  end
-
-  context 'for subgroups' do
-    let(:group) { create(:group) }
-    let(:subgroup) { create(:group, parent: group) }
-    let(:project) { create(:project, :public, :repository, group: subgroup) }
-
-    it 'renders tree table without errors' do
-      visit_blob('README.md')
-
-      expect(page).to have_selector('.file-content')
-      expect(page).not_to have_selector('.flash-alert')
-    end
-
-    it 'displays a GPG badge' do
-      visit_blob('CONTRIBUTING.md', ref: '33f3729a45c02fc67d00adb1b8bca394b0e761d9')
-
-      expect(page).not_to have_selector '.gpg-status-box.js-loading-gpg-badge'
-      expect(page).to have_selector '.gpg-status-box.invalid'
-    end
-  end
-
-  context 'on signed merge commit' do
-    it 'displays a GPG badge' do
-      visit_blob('conflicting-file.md', ref: '6101e87e575de14b38b4e1ce180519a813671e10')
-
-      expect(page).not_to have_selector '.gpg-status-box.js-loading-gpg-badge'
-      expect(page).to have_selector '.gpg-status-box.invalid'
-    end
-  end
-
-  context 'when static objects external storage is enabled' do
-    before do
-      stub_application_setting(static_objects_external_storage_url: 'https://cdn.gitlab.com')
-    end
-
-    context 'private project' do
-      let_it_be(:project) { create(:project, :repository, :private) }
-      let_it_be(:user) { create(:user) }
-
-      before do
-        project.add_developer(user)
-
-        sign_in(user)
-        visit_blob('README.md')
-      end
-
-      it 'shows open raw and download buttons with external storage URL prepended and user token appended to their href' do
-        path = project_raw_path(project, 'master/README.md')
-        raw_uri = "https://cdn.gitlab.com#{path}?token=#{user.static_object_token}"
-        download_uri = "https://cdn.gitlab.com#{path}?inline=false&token=#{user.static_object_token}"
-
-        aggregate_failures do
-          expect(page).to have_link 'Open raw', href: raw_uri
-          expect(page).to have_link 'Download', href: download_uri
-        end
-      end
-    end
-
-    context 'public project' do
-      before do
-        visit_blob('README.md')
-      end
-
-      it 'shows open raw and download buttons with external storage URL prepended to their href' do
-        path = project_raw_path(project, 'master/README.md')
-        raw_uri = "https://cdn.gitlab.com#{path}"
-        download_uri = "https://cdn.gitlab.com#{path}?inline=false"
-
-        aggregate_failures do
-          expect(page).to have_link 'Open raw', href: raw_uri
-          expect(page).to have_link 'Download', href: download_uri
-        end
-      end
-    end
-  end
 end

spec/frontend/blob/components/__snapshots__/blob_header_spec.js.snap

@@ -13,6 +13,7 @@ exports[`Blob Header Default Actions rendering matches the snapshot 1`] = `
      
     <blob-filepath-stub
       blob="[object Object]"
+      showpath="true"
     />
   </div>
    

spec/frontend/repository/components/blob_content_viewer_spec.js

@@ -236,7 +236,7 @@ describe('Blob content viewer component', () => {
 
         await waitForPromises();
 
-        expect(loadViewer).toHaveBeenCalledWith(viewer);
+        expect(loadViewer).toHaveBeenCalledWith(viewer, false);
         expect(wrapper.findComponent(loadViewerReturnValue).exists()).toBe(true);
       },
     );

spec/frontend/repository/components/blob_viewers/lfs_viewer_spec.js

+import { GlLink, GlSprintf } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import LfsViewer from '~/repository/components/blob_viewers/lfs_viewer.vue';
+
+describe('LFS Viewer', () => {
+  let wrapper;
+
+  const DEFAULT_PROPS = {
+    fileName: 'file_name.js',
+    filePath: '/some/file/path',
+  };
+
+  const createComponent = () => {
+    wrapper = shallowMount(LfsViewer, {
+      propsData: { ...DEFAULT_PROPS },
+      stubs: { GlSprintf },
+    });
+  };
+
+  const findLink = () => wrapper.findComponent(GlLink);
+
+  beforeEach(() => createComponent());
+
+  afterEach(() => wrapper.destroy());
+
+  it('renders the correct text', () => {
+    expect(wrapper.text()).toBe(
+      'This content could not be displayed because it is stored in LFS. You can download it instead.',
+    );
+  });
+
+  it('renders download link', () => {
+    const { filePath, fileName } = DEFAULT_PROPS;
+
+    expect(findLink().attributes()).toMatchObject({
+      target: '_blank',
+      href: filePath,
+      download: fileName,
+    });
+  });
+});

spec/frontend/repository/mock_data.js

@@ -17,6 +17,7 @@ export const simpleViewerMock = {
   canCurrentUserPushToBranch: true,
   archived: false,
   storedExternally: false,
+  externalStorageUrl: '',
   externalStorage: 'lfs',
   rawPath: 'some_file.js',
   replacePath: 'some_file.js/replace',