Scaffold basic Vue app for "New Release" page

This commit adds all the basic files necessary to begin development on
the new **New Release** page.

app/assets/javascripts/pages/projects/releases/new/index.js

+import ZenMode from '~/zen_mode';
+import initNewRelease from '~/releases/mount_new';
+
+document.addEventListener('DOMContentLoaded', () => {
+  new ZenMode(); // eslint-disable-line no-new
+  initNewRelease();
+});

app/assets/javascripts/releases/components/app_new.vue

+<script>
+export default {
+  name: 'ReleaseNewApp',
+  components: {},
+};
+</script>
+<template>
+  <div></div>
+</template>

app/assets/javascripts/releases/mount_new.js

+import Vue from 'vue';
+import ReleaseNewApp from './components/app_new.vue';
+import createStore from './stores';
+import createDetailModule from './stores/modules/detail';
+
+export default () => {
+  const el = document.getElementById('js-new-release-page');
+
+  const store = createStore({
+    modules: {
+      detail: createDetailModule(el.dataset),
+    },
+  });
+
+  return new Vue({
+    el,
+    store,
+    render: h => h(ReleaseNewApp),
+  });
+};

app/assets/javascripts/releases/stores/modules/detail/state.js

 export default ({
   projectId,
-  tagName,
-  releasesPagePath,
   markdownDocsPath,
   markdownPreviewPath,
   updateReleaseApiDocsPath,
   releaseAssetsDocsPath,
   manageMilestonesPath,
   newMilestonePath,
+
+  tagName = null,
+  releasesPagePath = null,
+  defaultBranch = null,
 }) => ({
   projectId,
-  tagName,
-  releasesPagePath,
   markdownDocsPath,
   markdownPreviewPath,
   updateReleaseApiDocsPath,
@@ -19,6 +19,10 @@ export default ({
   manageMilestonesPath,
   newMilestonePath,
 
+  tagName,
+  releasesPagePath,
+  defaultBranch,
+
   /** The Release object */
   release: null,
 

app/controllers/projects/releases_controller.rb

@@ -26,11 +26,11 @@ class Projects::ReleasesController < Projects::ApplicationController
 
   def show
     return render_404 unless Feature.enabled?(:release_show_page, project, default_enabled: true)
+  end
 
-    respond_to do |format|
-      format.html do
-        render :show
-      end
+  def new
+    unless Feature.enabled?(:new_release_page, project)
+      return redirect_to(new_project_tag_path(@project))
     end
   end
 
@@ -38,22 +38,12 @@ class Projects::ReleasesController < Projects::ApplicationController
     redirect_to link.url
   end
 
-  protected
+  private
 
   def releases
     ReleasesFinder.new(@project, current_user).execute
   end
 
-  def edit
-    respond_to do |format|
-      format.html do
-        render :edit
-      end
-    end
-  end
-
-  private
-
   def authorize_update_release!
     access_denied! unless can?(current_user, :update_release, release)
   end

app/helpers/releases_helper.rb

@@ -18,17 +18,36 @@ module ReleasesHelper
       illustration_path: illustration,
       documentation_path: help_page
     }.tap do |data|
-      data[:new_release_path] = new_project_tag_path(@project) if can?(current_user, :create_release, @project)
+      if can?(current_user, :create_release, @project)
+        data[:new_release_path] = if Feature.enabled?(:new_release_page, @project)
+                                    new_project_release_path(@project)
+                                  else
+                                    new_project_tag_path(@project)
+                                  end
+      end
     end
   end
 
   def data_for_edit_release_page
+    new_edit_pages_shared_data.merge(
+      tag_name: @release.tag,
+      releases_page_path: project_releases_path(@project, anchor: @release.tag)
+    )
+  end
+
+  def data_for_new_release_page
+    new_edit_pages_shared_data.merge(
+      default_branch: @project.default_branch
+    )
+  end
+
+  private
+
+  def new_edit_pages_shared_data
     {
       project_id: @project.id,
-      tag_name: @release.tag,
       markdown_preview_path: preview_markdown_path(@project),
       markdown_docs_path: help_page_path('user/markdown'),
-      releases_page_path: project_releases_path(@project, anchor: @release.tag),
       update_release_api_docs_path: help_page_path('api/releases/index.md', anchor: 'update-a-release'),
       release_assets_docs_path: help_page(anchor: 'release-assets'),
       manage_milestones_path: project_milestones_path(@project),

app/views/projects/releases/new.html.haml

 - page_title s_('Releases|New Release')
+
+#js-new-release-page{ data: data_for_new_release_page }

spec/frontend/releases/components/app_new_spec.js

+import Vue from 'vue';
+import Vuex from 'vuex';
+import { mount } from '@vue/test-utils';
+import ReleaseNewApp from '~/releases/components/app_new.vue';
+
+Vue.use(Vuex);
+
+describe('Release new component', () => {
+  let wrapper;
+
+  const factory = () => {
+    const store = new Vuex.Store();
+    wrapper = mount(ReleaseNewApp, { store });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  it('renders the app', () => {
+    factory();
+
+    expect(wrapper.exists()).toBe(true);
+  });
+});

spec/helpers/releases_helper_spec.rb

@@ -22,6 +22,7 @@ RSpec.describe ReleasesHelper do
     let(:can_user_create_release) { false }
     let(:common_keys) { [:project_id, :illustration_path, :documentation_path] }
 
+    # rubocop: disable CodeReuse/ActiveRecord
     before do
       helper.instance_variable_set(:@project, project)
       helper.instance_variable_set(:@release, release)
@@ -30,6 +31,7 @@ RSpec.describe ReleasesHelper do
                     .with(user, :create_release, project)
                     .and_return(can_user_create_release)
     end
+    # rubocop: enable CodeReuse/ActiveRecord
 
     describe '#data_for_releases_page' do
       it 'includes the required data for displaying release blocks' do
@@ -41,7 +43,20 @@ RSpec.describe ReleasesHelper do
 
         it 'includes new_release_path' do
           expect(helper.data_for_releases_page.keys).to contain_exactly(*common_keys, :new_release_path)
-          expect(helper.data_for_releases_page[:new_release_path]).to eq(new_project_tag_path(project))
+        end
+
+        it 'points new_release_path to the "New Release" page' do
+          expect(helper.data_for_releases_page[:new_release_path]).to eq(new_project_release_path(project))
+        end
+
+        context 'when the "new_release_page" feature flag is disabled' do
+          before do
+            stub_feature_flags(new_release_page: false)
+          end
+
+          it 'points new_release_path to the "New Tag" page' do
+            expect(helper.data_for_releases_page[:new_release_path]).to eq(new_project_tag_path(project))
+          end
         end
       end
     end
@@ -57,7 +72,23 @@ RSpec.describe ReleasesHelper do
                   release_assets_docs_path
                   manage_milestones_path
                   new_milestone_path)
-        expect(helper.data_for_edit_release_page.keys).to eq(keys)
+
+        expect(helper.data_for_edit_release_page.keys).to match_array(keys)
+      end
+    end
+
+    describe '#data_for_new_release_page' do
+      it 'has the needed data to display the "new release" page' do
+        keys = %i(project_id
+                  markdown_preview_path
+                  markdown_docs_path
+                  update_release_api_docs_path
+                  release_assets_docs_path
+                  manage_milestones_path
+                  new_milestone_path
+                  default_branch)
+
+        expect(helper.data_for_new_release_page.keys).to match_array(keys)
       end
     end
   end