Merge branch 'ce-revert-d5ce84fd' into 'master'

Revert "Merge branch 'revert-82d7b5a0-ce' into 'master'"

Closes #57857 and #50747

See merge request gitlab-org/gitlab-ce!25559

app/assets/javascripts/filtered_search/filtered_search_dropdown_manager.js

@@ -96,6 +96,11 @@ export default class FilteredSearchDropdownManager {
         gl: DropdownNonUser,
         element: this.container.querySelector('#js-dropdown-wip'),
       },
+      confidential: {
+        reference: null,
+        gl: DropdownNonUser,
+        element: this.container.querySelector('#js-dropdown-confidential'),
+      },
       status: {
         reference: null,
         gl: NullDropdown,

app/assets/javascripts/filtered_search/filtered_search_token_keys.js

@@ -72,6 +72,23 @@ export default class FilteredSearchTokenKeys {
     );
   }
 
+  addExtraTokensForIssues() {
+    const confidentialToken = {
+      key: 'confidential',
+      type: 'string',
+      param: '',
+      symbol: '',
+      icon: 'eye-slash',
+      tag: 'Yes or No',
+      lowercaseValueOnSubmit: true,
+      uppercaseTokenName: false,
+      capitalizeTokenValue: true,
+    };
+
+    this.tokenKeys.push(confidentialToken);
+    this.tokenKeysWithAlternative.push(confidentialToken);
+  }
+
   addExtraTokensForMergeRequests() {
     const wipToken = {
       key: 'wip',

app/assets/javascripts/pages/groups/issues/index.js

 import projectSelect from '~/project_select';
 import initFilteredSearch from '~/pages/search/init_filtered_search';
 import { FILTERED_SEARCH } from '~/pages/constants';
-import IssuableFilteredSearchTokenKeys from '~/filtered_search/issuable_filtered_search_token_keys';
+import IssuableFilteredSearchTokenKeys from 'ee_else_ce/filtered_search/issuable_filtered_search_token_keys';
 
 document.addEventListener('DOMContentLoaded', () => {
+  IssuableFilteredSearchTokenKeys.addExtraTokensForIssues();
+
   initFilteredSearch({
     page: FILTERED_SEARCH.ISSUES,
     isGroupDecendent: true,

app/assets/javascripts/pages/projects/issues/index/index.js

@@ -4,11 +4,13 @@ import IssuableIndex from '~/issuable_index';
 import ShortcutsNavigation from '~/behaviors/shortcuts/shortcuts_navigation';
 import UsersSelect from '~/users_select';
 import initFilteredSearch from '~/pages/search/init_filtered_search';
-import IssuableFilteredSearchTokenKeys from '~/filtered_search/issuable_filtered_search_token_keys';
+import IssuableFilteredSearchTokenKeys from 'ee_else_ce/filtered_search/issuable_filtered_search_token_keys';
 import { FILTERED_SEARCH } from '~/pages/constants';
 import { ISSUABLE_INDEX } from '~/pages/projects/constants';
 
 document.addEventListener('DOMContentLoaded', () => {
+  IssuableFilteredSearchTokenKeys.addExtraTokensForIssues();
+
   initFilteredSearch({
     page: FILTERED_SEARCH.ISSUES,
     filteredSearchTokenKeys: IssuableFilteredSearchTokenKeys,

app/assets/javascripts/releases/store/actions.js

@@ -11,7 +11,7 @@ export const requestReleases = ({ commit }) => commit(types.REQUEST_RELEASES);
 /**
  * Fetches the main endpoint.
  * Will dispatch requestNamespace action before starting the request.
- * Will dispatch receiveNamespaceSuccess if the request is successfull
+ * Will dispatch receiveNamespaceSuccess if the request is successful
  * Will dispatch receiveNamesapceError if the request returns an error
  *
  * @param {String} projectId

app/controllers/clusters/clusters_controller.rb

@@ -24,7 +24,7 @@ class Clusters::ClustersController < Clusters::BaseController
     # Note: We are paginating through an array here but this should OK as:
     #
     # In CE, we can have a maximum group nesting depth of 21, so including
-    # project cluster, we can have max 22 clusters for a group hierachy.
+    # project cluster, we can have max 22 clusters for a group hierarchy.
     # In EE (Premium) we can have any number, as multiple clusters are
     # supported, but the number of clusters are fairly low currently.
     #

app/controllers/concerns/issuable_collections.rb

@@ -91,6 +91,7 @@ module IssuableCollections
     options = {
       scope: params[:scope],
       state: params[:state],
+      confidential: Gitlab::Utils.to_boolean(params[:confidential]),
       sort: set_sort_order
     }
 

app/controllers/concerns/lfs_request.rb

@@ -123,7 +123,7 @@ module LfsRequest
     (authentication_abilities || []).include?(capability)
   end
 
-  # Overriden in EE
+  # Overridden in EE
   def limit_exceeded?
     false
   end

app/finders/group_descendants_finder.rb

@@ -134,7 +134,7 @@ class GroupDescendantsFinder
   def subgroups
     return Group.none unless Group.supports_nested_objects?
 
-    # When filtering subgroups, we want to find all matches withing the tree of
+    # When filtering subgroups, we want to find all matches within the tree of
     # descendants to show to the user
     groups = if params[:filter]
                subgroups_matching_filter

app/finders/issues_finder.rb

@@ -69,7 +69,16 @@ class IssuesFinder < IssuableFinder
   end
 
   def filter_items(items)
-    by_due_date(super)
+    issues = super
+    issues = by_due_date(issues)
+    issues = by_confidential(issues)
+    issues
+  end
+
+  def by_confidential(items)
+    return items if params[:confidential].nil?
+
+    params[:confidential] ? items.confidential_only : items.public_only
   end
 
   def by_due_date(items)

app/helpers/count_helper.rb

@@ -13,7 +13,7 @@ module CountHelper
   # memberships, and deducting 1 for each root of the fork network.
   # This might be inacurate as the root of the fork network might have been deleted.
   #
-  # This makes querying this information a lot more effecient and it should be
+  # This makes querying this information a lot more efficient and it should be
   # accurate enough for the instance wide statistics
   def approximate_fork_count_with_delimiters(count_data)
     fork_network_count = count_data[ForkNetwork]

app/models/ci/build_trace_chunk.rb

@@ -18,7 +18,7 @@ module Ci
     FailedToPersistDataError = Class.new(StandardError)
 
     # Note: The ordering of this enum is related to the precedence of persist store.
-    # The bottom item takes the higest precedence, and the top item takes the lowest precedence.
+    # The bottom item takes the highest precedence, and the top item takes the lowest precedence.
     enum data_store: {
       redis: 1,
       database: 2,

app/models/concerns/fast_destroy_all.rb

@@ -11,7 +11,7 @@
 # it is difficult to accomplish it.
 #
 # This module defines a format to use `delete_all` and delete associated external data.
-# Here is an exmaple
+# Here is an example
 #
 # Situation
 # - `Project` has many `Ci::BuildTraceChunk` through `Ci::Build`

app/models/concerns/iid_routes.rb

@@ -4,7 +4,7 @@ module IidRoutes
   ##
   # This automagically enforces all related routes to use `iid` instead of `id`
   # If you want to use `iid` for some routes and `id` for other routes, this module should not to be included,
-  # instead you should define `iid` or `id` explictly at each route generators. e.g. pipeline_path(project.id, pipeline.iid)
+  # instead you should define `iid` or `id` explicitly at each route generators. e.g. pipeline_path(project.id, pipeline.iid)
   def to_param
     iid.to_s
   end

app/models/issue.rb

@@ -66,6 +66,7 @@ class Issue < ActiveRecord::Base
   scope :preload_associations, -> { preload(:labels, project: :namespace) }
 
   scope :public_only, -> { where(confidential: false) }
+  scope :confidential_only, -> { where(confidential: true) }
 
   after_save :expire_etag_cache
   after_save :ensure_metrics, unless: :imported?

app/models/notification_recipient.rb

@@ -153,7 +153,7 @@ class NotificationRecipient
     user.global_notification_setting
   end
 
-  # Returns the notificaton_setting of the lowest group in hierarchy with non global level
+  # Returns the notification_setting of the lowest group in hierarchy with non global level
   def closest_non_global_group_notification_settting
     return unless @group
     return if indexed_group_notification_settings.empty?

app/models/project.rb

@@ -249,10 +249,10 @@ class Project < ActiveRecord::Base
   has_many :container_repositories, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
   has_many :commit_statuses
-  # The relation :all_pipelines is intented to be used when we want to get the
+  # The relation :all_pipelines is intended to be used when we want to get the
   # whole list of pipelines associated to the project
   has_many :all_pipelines, class_name: 'Ci::Pipeline', inverse_of: :project
-  # The relation :ci_pipelines is intented to be used when we want to get only
+  # The relation :ci_pipelines is intended to be used when we want to get only
   # those pipeline which are directly related to CI. There are
   # other pipelines, like webide ones, that we won't retrieve
   # if we use this relation.
@@ -1216,7 +1216,7 @@ class Project < ActiveRecord::Base
     "#{web_url}.git"
   end
 
-  # Is overriden in EE
+  # Is overridden in EE
   def lfs_http_url_to_repo(_)
     http_url_to_repo
   end

app/services/ci/create_pipeline_service.rb

@@ -112,10 +112,10 @@ module Ci
     def extra_options(options = {})
       # In Ruby 2.4, even when options is empty, f(**options) doesn't work when f
       # doesn't have any parameters. We reproduce the Ruby 2.5 behavior by
-      # checking explicitely that no arguments are given.
+      # checking explicitly that no arguments are given.
       raise ArgumentError if options.any?
 
-      {} # overriden in EE
+      {} # overridden in EE
     end
   end
 end

app/services/ci/pipeline_trigger_service.rb

@@ -38,11 +38,11 @@ module Ci
     end
 
     def create_pipeline_from_job(job)
-      # overriden in EE
+      # overridden in EE
     end
 
     def job_from_token
-      # overriden in EE
+      # overridden in EE
     end
 
     def variables

app/services/git_push_service.rb

@@ -235,6 +235,6 @@ class GitPushService < BaseService
   private
 
   def pipeline_options
-    {} # to be overriden in EE
+    {} # to be overridden in EE
   end
 end

app/services/git_tag_push_service.rb

@@ -61,6 +61,6 @@ class GitTagPushService < BaseService
   end
 
   def pipeline_options
-    {} # to be overriden in EE
+    {} # to be overridden in EE
   end
 end

app/services/groups/create_service.rb

@@ -33,7 +33,7 @@ module Groups
     private
 
     def after_build_hook(group, params)
-      # overriden in EE
+      # overridden in EE
     end
 
     def create_chat_team?

app/services/groups/update_service.rb

@@ -31,7 +31,7 @@ module Groups
     private
 
     def before_assignment_hook(group, params)
-      # overriden in EE
+      # overridden in EE
     end
 
     def after_update

app/services/system_note_service.rb

@@ -360,7 +360,7 @@ module SystemNoteService
   # author      - User performing the change
   # branch_type - 'source' or 'target'
   # old_branch  - old branch name
-  # new_branch  - new branch nmae
+  # new_branch  - new branch name
   #
   # Example Note text:
   #

app/views/shared/issuable/_search_bar.html.haml

@@ -128,6 +128,14 @@
                 %li.filter-dropdown-item{ data: { value: 'no', capitalize: true } }
                   %button.btn.btn-link{ type: 'button' }
                     = _('No')
+            #js-dropdown-confidential.filtered-search-input-dropdown-menu.dropdown-menu
+              %ul.filter-dropdown{ data: { dropdown: true } }
+                %li.filter-dropdown-item{ data: { value: 'yes', capitalize: true } }
+                  %button.btn.btn-link{ type: 'button' }
+                    = _('Yes')
+                %li.filter-dropdown-item{ data: { value: 'no', capitalize: true } }
+                  %button.btn.btn-link{ type: 'button' }
+                    = _('No')
 
             = render_if_exists 'shared/issuable/filter_weight', type: type
 

changelogs/unreleased/filter-confidential-issues.yml

+---
+title: Ability to filter confidential issues
+merge_request: 24960
+author: Robert Schilling
+type: added

changelogs/unreleased/sh-fix-cpp-templates-404.yml

+---
+title: Fix 404s when C++ .gitignore template selected
+merge_request: 25416
+author:
+type: fixed

doc/api/issues.md

@@ -32,6 +32,7 @@ GET /issues?author_id=5
 GET /issues?assignee_id=5
 GET /issues?my_reaction_emoji=star
 GET /issues?search=foo&in=title
+GET /issues?confidential=true
 ```
 
 | Attribute           | Type             | Required   | Description                                                                                                                                         |
@@ -52,6 +53,7 @@ GET /issues?search=foo&in=title
 | `created_before`    | datetime         | no         | Return issues created on or before the given time                                                                                                   |
 | `updated_after`     | datetime         | no         | Return issues updated on or after the given time                                                                                                    |
 | `updated_before`    | datetime         | no         | Return issues updated on or before the given time                                                                                                   |
+| `confidential `     | Boolean          | no        | Filter confidential or public issues.                                                                                                                |
 
 ```bash
 curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/issues
@@ -148,6 +150,7 @@ GET /groups/:id/issues?search=issue+title+or+description
 GET /groups/:id/issues?author_id=5
 GET /groups/:id/issues?assignee_id=5
 GET /groups/:id/issues?my_reaction_emoji=star
+GET /groups/:id/issues?confidential=true
 ```
 
 | Attribute           | Type             | Required   | Description                                                                                                                   |
@@ -168,6 +171,7 @@ GET /groups/:id/issues?my_reaction_emoji=star
 | `created_before`    | datetime         | no         | Return issues created on or before the given time                                                                             |
 | `updated_after`     | datetime         | no         | Return issues updated on or after the given time                                                                              |
 | `updated_before`    | datetime         | no         | Return issues updated on or before the given time                                                                             |
+| `confidential `     | Boolean          | no         | Filter confidential or public issues.                                                                                         |
 
 ```bash
 curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/groups/4/issues
@@ -264,6 +268,7 @@ GET /projects/:id/issues?search=issue+title+or+description
 GET /projects/:id/issues?author_id=5
 GET /projects/:id/issues?assignee_id=5
 GET /projects/:id/issues?my_reaction_emoji=star
+GET /projects/:id/issues?confidential=true
 ```
 
 | Attribute           | Type             | Required   | Description                                                                                                                   |
@@ -284,6 +289,8 @@ GET /projects/:id/issues?my_reaction_emoji=star
 | `created_before`    | datetime         | no         | Return issues created on or before the given time                                                                             |
 | `updated_after`     | datetime         | no         | Return issues updated on or after the given time                                                                              |
 | `updated_before`    | datetime         | no         | Return issues updated on or before the given time                                                                             |
+| `confidential `     | Boolean          | no         | Filter confidential or public issues.                                                                                         |
+
 
 ```bash
 curl --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/projects/4/issues

lib/api/issues.rb

@@ -54,6 +54,7 @@ module API
         optional :scope, type: String, values: %w[created-by-me assigned-to-me created_by_me assigned_to_me all],
                          desc: 'Return issues for the given scope: `created_by_me`, `assigned_to_me` or `all`'
         optional :my_reaction_emoji, type: String, desc: 'Return issues reacted by the authenticated user by the given emoji'
+        optional :confidential, type: Boolean, desc: 'Filter confidential or public issues'
         use :pagination
 
         use :issues_params_ee

lib/api/project_templates.rb

@@ -36,7 +36,10 @@ module API
         optional :project, type: String, desc: 'The project name to use when expanding placeholders in the template. Only affects licenses'
         optional :fullname, type: String, desc: 'The full name of the copyright holder to use when expanding placeholders in the template. Only affects licenses'
       end
-      get ':id/templates/:type/:name', requirements: { name: /[\w\.-]+/ } do
+      # The regex is needed to ensure a period (e.g. agpl-3.0)
+      # isn't confused with a format type. We also need to allow encoded
+      # values (e.g. C%2B%2B for C++), so allow % and + as well.
+      get ':id/templates/:type/:name', requirements: { name: /[\w%.+-]+/ } do
         template = TemplateFinder
           .build(params[:type], user_project, name: params[:name])
           .execute

spec/controllers/concerns/issuable_collections_spec.rb

@@ -112,7 +112,8 @@ describe IssuableCollections do
         assignee_username: 'user1',
         author_id: '2',
         author_username: 'user2',
-        authorized_only: 'true',
+        authorized_only: 'yes',
+        confidential: true,
         due_date: '2017-01-01',
         group_id: '3',
         iids: '4',
@@ -140,6 +141,7 @@ describe IssuableCollections do
         'assignee_username' => 'user1',
         'author_id' => '2',
         'author_username' => 'user2',
+        'confidential' => true,
         'label_name' => 'foo',
         'milestone_title' => 'bar',
         'my_reaction_emoji' => 'thumbsup',

spec/features/issues/filtered_search/dropdown_hint_spec.rb

@@ -66,7 +66,7 @@ describe 'Dropdown hint', :js do
       it 'filters with text' do
         filtered_search.set('a')
 
-        expect(find(js_dropdown_hint)).to have_selector('.filter-dropdown .filter-dropdown-item', count: 4)
+        expect(find(js_dropdown_hint)).to have_selector('.filter-dropdown .filter-dropdown-item', count: 5)
       end
     end
 
@@ -119,6 +119,15 @@ describe 'Dropdown hint', :js do
         expect_tokens([{ name: 'my-reaction' }])
         expect_filtered_search_input_empty
       end
+
+      it 'opens the yes-no dropdown when you click on confidential' do
+        click_hint('confidential')
+
+        expect(page).to have_css(js_dropdown_hint, visible: false)
+        expect(page).to have_css('#js-dropdown-confidential', visible: true)
+        expect_tokens([{ name: 'confidential' }])
+        expect_filtered_search_input_empty
+      end
     end
 
     describe 'selecting from dropdown with some input' do

spec/features/issues/filtered_search/search_bar_spec.rb

@@ -100,7 +100,7 @@ describe 'Search bar', :js do
       find('.filtered-search-box .clear-search').click
       filtered_search.click
 
-      expect(find('#js-dropdown-hint')).to have_selector('.filter-dropdown .filter-dropdown-item', count: 5)
+      expect(find('#js-dropdown-hint')).to have_selector('.filter-dropdown .filter-dropdown-item', count: 6)
       expect(get_left_style(find('#js-dropdown-hint')['style'])).to eq(hint_offset)
     end
   end

spec/features/issues/gfm_autocomplete_spec.rb

@@ -278,7 +278,7 @@ describe 'GFM autocomplete', :js do
     end
   end
 
-  # This context has jsut one example in each contexts in order to improve spec performance.
+  # This context has just one example in each contexts in order to improve spec performance.
   context 'labels', :quarantine do
     let!(:backend)          { create(:label, project: project, title: 'backend') }
     let!(:bug)              { create(:label, project: project, title: 'bug') }

spec/features/projects/blobs/edit_spec.rb

@@ -77,7 +77,7 @@ describe 'Editing file blob', :js do
         click_link 'Preview'
         wait_for_requests
 
-        # the above generates two seperate lists (not embedded) in CommonMark
+        # the above generates two separate lists (not embedded) in CommonMark
         expect(page).to have_content("sublist")
         expect(page).not_to have_xpath("//ol//li//ul")
       end

spec/features/projects/wiki/markdown_preview_spec.rb

@@ -170,7 +170,7 @@ describe 'Projects > Wiki > User previews markdown changes', :js do
         fill_in :wiki_content, with: "1. one\n  - sublist\n"
         click_on "Preview"
 
-        # the above generates two seperate lists (not embedded) in CommonMark
+        # the above generates two separate lists (not embedded) in CommonMark
         expect(page).to have_content("sublist")
         expect(page).not_to have_xpath("//ol//li//ul")
       end

spec/finders/issues_finder_spec.rb

@@ -490,6 +490,32 @@ describe IssuesFinder do
         end
       end
 
+      context 'filtering by confidential' do
+        set(:confidential_issue) { create(:issue, project: project1, confidential: true) }
+
+        context 'no filtering' do
+          it 'returns all issues' do
+            expect(issues).to contain_exactly(issue1, issue2, issue3, issue4, confidential_issue)
+          end
+        end
+
+        context 'user filters confidential issues' do
+          let(:params) { { confidential: true } }
+
+          it 'returns only confdential issues' do
+            expect(issues).to contain_exactly(confidential_issue)
+          end
+        end
+
+        context 'user filters only public issues' do
+          let(:params) { { confidential: false } }
+
+          it 'returns only confdential issues' do
+            expect(issues).to contain_exactly(issue1, issue2, issue3, issue4)
+          end
+        end
+      end
+
       context 'when the user is unauthorized' do
         let(:search_user) { nil }
 
@@ -556,7 +582,7 @@ describe IssuesFinder do
     it 'returns the number of rows for the default state' do
       finder = described_class.new(user)
 
-      expect(finder.row_count).to eq(4)
+      expect(finder.row_count).to eq(5)
     end
 
     it 'returns the number of rows for a given state' do

spec/models/issue_spec.rb

@@ -765,6 +765,15 @@ describe Issue do
     end
   end
 
+  describe '.confidential_only' do
+    it 'only returns confidential_only issues' do
+      create(:issue)
+      confidential_issue = create(:issue, confidential: true)
+
+      expect(described_class.confidential_only).to eq([confidential_issue])
+    end
+  end
+
   it_behaves_like 'throttled touch' do
     subject { create(:issue, updated_at: 1.hour.ago) }
   end

spec/requests/api/issues_spec.rb

@@ -183,6 +183,18 @@ describe API::Issues do
         expect_paginated_array_response([issue.id, confidential_issue.id, closed_issue.id])
       end
 
+      it 'returns only confidential issues' do
+        get api('/issues', user), params: { confidential: true, scope: 'all' }
+
+        expect_paginated_array_response(confidential_issue.id)
+      end
+
+      it 'returns only public issues' do
+        get api('/issues', user), params: { confidential: false }
+
+        expect_paginated_array_response([issue.id, closed_issue.id])
+      end
+
       it 'returns issues reacted by the authenticated user' do
         issue2 = create(:issue, project: project, author: user, assignees: [user])
         create(:award_emoji, awardable: issue2, user: user2, name: 'star')
@@ -557,6 +569,18 @@ describe API::Issues do
         expect_paginated_array_response([group_confidential_issue.id, group_issue.id])
       end
 
+      it 'returns only confidential issues' do
+        get api(base_url, user), params: { confidential: true }
+
+        expect_paginated_array_response(group_confidential_issue.id)
+      end
+
+      it 'returns only public issues' do
+        get api(base_url, user), params: { confidential: false }
+
+        expect_paginated_array_response([group_closed_issue.id, group_issue.id])
+      end
+
       it 'returns an array of labeled group issues' do
         get api(base_url, user), params: { labels: group_label.title }
 
@@ -782,6 +806,18 @@ describe API::Issues do
       expect_paginated_array_response([issue.id, confidential_issue.id, closed_issue.id])
     end
 
+    it 'returns only confidential issues' do
+      get api("#{base_url}/issues", author), params: { confidential: true }
+
+      expect_paginated_array_response(confidential_issue.id)
+    end
+
+    it 'returns only public issues' do
+      get api("#{base_url}/issues", author), params: { confidential: false }
+
+      expect_paginated_array_response([issue.id, closed_issue.id])
+    end
+
     it 'returns project confidential issues for assignee' do
       get api("#{base_url}/issues", assignee)
 

spec/requests/api/project_templates_spec.rb

@@ -92,6 +92,22 @@ describe API::ProjectTemplates do
       expect(json_response['name']).to eq('Actionscript')
     end
 
+    it 'returns C++ gitignore' do
+      get api("/projects/#{public_project.id}/templates/gitignores/C++")
+
+      expect(response).to have_gitlab_http_status(200)
+      expect(response).to match_response_schema('public_api/v4/template')
+      expect(json_response['name']).to eq('C++')
+    end
+
+    it 'returns C++ gitignore for URL-encoded names' do
+      get api("/projects/#{public_project.id}/templates/gitignores/C%2B%2B")
+
+      expect(response).to have_gitlab_http_status(200)
+      expect(response).to match_response_schema('public_api/v4/template')
+      expect(json_response['name']).to eq('C++')
+    end
+
     it 'returns a specific gitlab_ci_yml' do
       get api("/projects/#{public_project.id}/templates/gitlab_ci_ymls/Android")
 
@@ -125,6 +141,18 @@ describe API::ProjectTemplates do
       expect(response).to have_gitlab_http_status(200)
       expect(response).to match_response_schema('public_api/v4/license')
     end
+
+    shared_examples 'path traversal attempt' do |template_type|
+      it 'rejects invalid filenames' do
+        get api("/projects/#{public_project.id}/templates/#{template_type}/%2e%2e%2fPython%2ea")
+
+        expect(response).to have_gitlab_http_status(500)
+      end
+    end
+
+    TemplateFinder::VENDORED_TEMPLATES.each do |template_type, _|
+      it_behaves_like 'path traversal attempt', template_type
+    end
   end
 
   describe 'GET /projects/:id/templates/licenses/:key' do