Rename the karma:fixtures task

Introduces frontend:fixtures rake task to replace
karma:fixtures and update documentation and CI scripts
to match

.gitlab/ci/frontend.gitlab-ci.yml

@@ -182,7 +182,7 @@ jest:
   script:
     - scripts/gitaly-test-spawn
     - date
-    - bundle exec rake karma:fixtures
+    - bundle exec rake frontend:fixtures
     - date
     - yarn jest --ci --coverage
   artifacts:

doc/development/testing_guide/frontend_testing.md

@@ -80,18 +80,20 @@ describe('Component', () => {
 Remember that the performance of each test depends on the environment.
 
 ### Manual module mocks
+
 Jest supports [manual module mocks](https://jestjs.io/docs/en/manual-mocks) by placing a mock in a `__mocks__/` directory next to the source module. **Don't do this.** We want to keep all of our test-related code in one place (the `spec/` folder), and the logic that Jest uses to apply mocks from `__mocks__/` is rather inconsistent.
 
 Instead, our test runner detects manual mocks from `spec/frontend/mocks/`. Any mock placed here is automatically picked up and injected whenever you import its source module.
 
 - Files in `spec/frontend/mocks/ce` will mock the corresponding CE module from `app/assets/javascripts`, mirroring the source module's path.
-    - Example: `spec/frontend/mocks/ce/lib/utils/axios_utils` will mock the module `~/lib/utils/axios_utils`.
+  - Example: `spec/frontend/mocks/ce/lib/utils/axios_utils` will mock the module `~/lib/utils/axios_utils`.
 - Files in `spec/frontend/mocks/node` will mock NPM packages of the same name or path.
 - We don't support mocking EE modules yet.
 
 If a mock is found for which a source module doesn't exist, the test suite will fail. 'Virtual' mocks, or mocks that don't have a 1-to-1 association with a source module, are not supported yet.
 
 #### Writing a mock
+
 Create a JS module in the appropriate place in `spec/frontend/mocks/`. That's it. It will automatically mock its source package in all tests.
 
 Make sure that your mock's export has the same format as the mocked module. So, if you're mocking a CommonJS module, you'll need to use `module.exports` instead of the ES6 `export`.
@@ -99,14 +101,15 @@ Make sure that your mock's export has the same format as the mocked module. So,
 It might be useful for a mock to expose a property that indicates if the mock was loaded. This way, tests can assert the presence of a mock without calling any logic and causing side-effects. The `~/lib/utils/axios_utils` module mock has such a property, `isMock`, that is `true` in the mock and undefined in the original class. Jest's mock functions also have a `mock` property that you can test.
 
 #### Bypassing mocks
+
 If you ever need to import the original module in your tests, use [`jest.requireActual()`](https://jestjs.io/docs/en/jest-object#jestrequireactualmodulename) (or `jest.requireActual().default` for the default export). The `jest.mock()` and `jest.unmock()` won't have an effect on modules that have a manual mock, because mocks are imported and cached before any tests are run.
 
 #### Keep mocks light
+
 Global mocks introduce magic and can affect how modules are imported in your tests. Try to keep them as light as possible and dependency-free. A global mock should be useful for any unit test. For example, the `axios_utils` and `jquery` module mocks throw an error when an HTTP request is attempted, since this is useful behaviour in >99% of tests.
 
 When in doubt, construct mocks in your test file using [`jest.mock()`](https://jestjs.io/docs/en/jest-object#jestmockmodulename-factory-options), [`jest.spyOn()`](https://jestjs.io/docs/en/jest-object#jestspyonobject-methodname), etc.
 
-
 ## Karma test suite
 
 GitLab uses the [Karma][karma] test runner with [Jasmine] as its test
@@ -462,7 +465,7 @@ See this [section][vue-test].
 
 For running the frontend tests, you need the following commands:
 
-- `rake karma:fixtures` (re-)generates [fixtures](#frontend-test-fixtures).
+- `rake frontend:fixtures` (re-)generates [fixtures](#frontend-test-fixtures).
 - `yarn test` executes the tests.
 
 As long as the fixtures don't change, `yarn test` is sufficient (and saves you some time).
@@ -548,7 +551,7 @@ HTML and JSON fixtures are generated from backend views and controllers using RS
 
 For each fixture, the content of the `response` variable is stored in the output file.
 This variable gets automagically set if the test is marked as `type: :request` or `type: :controller`.
-Fixtures are regenerated using the `bin/rake karma:fixtures` command but you can also generate them individually,
+Fixtures are regenerated using the `bin/rake frontend:fixtures` command but you can also generate them individually,
 for example `bin/rspec spec/javascripts/fixtures/merge_requests.rb`.
 When creating a new fixture, it often makes sense to take a look at the corresponding tests for the endpoint in `(ee/)spec/controllers/` or `(ee/)spec/requests/`.
 

lib/tasks/frontend.rake

+unless Rails.env.production?
+  namespace :frontend do
+    desc 'GitLab | Frontend | Generate fixtures for JavaScript tests'
+    RSpec::Core::RakeTask.new(:fixtures, [:pattern]) do |t, args|
+      args.with_defaults(pattern: '{spec,ee/spec}/javascripts/fixtures/*.rb')
+      ENV['NO_KNAPSACK'] = 'true'
+      t.pattern = args[:pattern]
+      t.rspec_opts = '--format documentation'
+    end
+
+    desc 'GitLab | Frontend | Run JavaScript tests'
+    task tests: ['yarn:check'] do
+      sh "yarn test" do |ok, res|
+        abort('rake frontend:tests failed') unless ok
+      end
+    end
+  end
+
+  desc 'GitLab | Frontend | Shortcut for frontend:fixtures and frontend:tests'
+  task frontend: ['frontend:fixtures', 'frontend:tests']
+end

lib/tasks/karma.rake

 unless Rails.env.production?
   namespace :karma do
+    # alias exists for legacy reasons
     desc 'GitLab | Karma | Generate fixtures for JavaScript tests'
-    task fixtures: ['karma:rspec_fixtures']
-
-    desc 'GitLab | Karma | Generate fixtures using RSpec'
-    RSpec::Core::RakeTask.new(:rspec_fixtures, [:pattern]) do |t, args|
-      args.with_defaults(pattern: '{spec,ee/spec}/javascripts/fixtures/*.rb')
-      ENV['NO_KNAPSACK'] = 'true'
-      t.pattern = args[:pattern]
-      t.rspec_opts = '--format documentation'
-    end
+    task fixtures: ['frontend:fixtures']
 
     desc 'GitLab | Karma | Run JavaScript tests'
     task tests: ['yarn:check'] do

spec/frontend/helpers/fixtures.js

@@ -9,7 +9,7 @@ export function getFixture(relativePath) {
     throw new ErrorWithStack(
       `Fixture file ${relativePath} does not exist.
 
-Did you run bin/rake karma:fixtures?`,
+Did you run bin/rake frontend:fixtures?`,
       getFixture,
     );
   }