mirror of
https://gerrit.wikimedia.org/r/mediawiki/skins/MinervaNeue
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95 lines
3.6 KiB
Markdown
95 lines
3.6 KiB
Markdown
# Selenium tests
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For more information see https://www.mediawiki.org/wiki/Selenium
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## Setup
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See https://www.mediawiki.org/wiki/MediaWiki-Docker/MinervaNeue
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## Run all specs
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npm run selenium-test
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## Run specific tests
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Filter by file name:
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npm run selenium-test -- --spec tests/selenium/specs/[FILE-NAME]
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Filter by file name and test name:
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npm run selenium-test -- --spec tests/selenium/specs/[FILE-NAME] --mochaOpts.grep [TEST-NAME]
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# Migrating a test from Ruby to Node.js
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Currently we are in the midst of porting our Ruby tests to Node.js.
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When the tests/browser/features folder is empty, we are done and the whole tests/browser folder can be removed.
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This is a slow process (porting a single test can take an entire afternoon).
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## Step 1 - move feature file
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Move the feature you want to port to Node.js
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```
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mv tests/browser/features/<name>.feature tests/selenium/features/
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```
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Example: https://gerrit.wikimedia.org/r/#/c/mediawiki/skins/MinervaNeue/+/501792/1/tests/selenium/features/editor_wikitext_saving.feature
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## Step 2 - add boilerplate for missing steps
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Run the feature in cucumber
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```
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npm run selenium-test-cucumber -- --spec tests/selenium/features/<name>.feature
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```
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You will get warnings such as:
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```
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Step "I go to a page that has languages" is not defined. You can ignore this error by setting cucumberOpts.ignoreUndefinedDefinitions as true.
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```
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For each missing step define them as one liners inside selenium/features/step_definitions/index.js
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Create functions with empty bodies for each step.
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Function names should be camel case without space, for example, `I go to a page that has languages` becomes `iGoToAPageThatHasLanguages`. Each function should be imported from a step file inside the features/step_definitions folder.
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Rerun the test. If done correctly this should now pass.
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Example: https://gerrit.wikimedia.org/r/#/c/mediawiki/skins/MinervaNeue/+/501792/1..2
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## Step 3 - copy across Ruby function bodies
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Copy across the body of the Ruby equivalent inside each function body in tests/browser/features/step_definitions as comments.
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Example: https://gerrit.wikimedia.org/r/#/c/mediawiki/skins/MinervaNeue/+/501792/2..3
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## Step 4 - rewrite Ruby to Node.js
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Sadly there is no shortcut here. Reuse as much as you can. Work with the knowledge that the parts you are adding will aid the next browser test migration.
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The docs are your friend: http://v4.webdriver.io/api/utility/waitForVisible.html
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Example: https://gerrit.wikimedia.org/r/#/c/mediawiki/skins/MinervaNeue/+/501792/2..4
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## Step 5 - Make it work without Cucumber
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Now the tests should be passing when run the browser tests using wdio.conf.cucumber.js or `npm run selenium-test-cucumber`
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The final step involves making these run with
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`npm run selenium-test`
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This is relatively straightforward and mechanical.
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1) Copy the feature file to the specs folder
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```
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cp tests/selenium/features/editor_wikitext_saving.feature tests/selenium/specs/editor_wikitext_saving.js
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```
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2) Convert indents to tabs
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3) Add `//` before any tags
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4) Replace `Scenario: <name>` with `it( '<name>', () => {`
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5) Add closing braces for all scenarios: ` } );`
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6) Replace `Feature: <feature>` with `describe('<feature>)', () => {` and add closing brace.
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7) Replace `Background:` with `beforeEach( () => {` and add closing brace.
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8) Find and replace `Given `, `When `, `And `, `Then ` with empty strings.
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9) At top of file copy and paste imports from `selenium/features/step_definitions/index.js` to top of your new file and rewrite their paths.
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10) Relying on autocomplete (VisualStudio Code works great) replace all the lines with the imports
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11) Drop unused imports from the file.
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