Notes from task breakdown:

Task 1: create RequestBuilder.withUser( user ) - @Ollie.Shotton_WMDE creates task

• create a RequestBuilder.withUser( user ) method where user is something like the return value of await action.mindy()
• use it in the 'has an X-Authenticated-User header with the logged in user' test cases

Task 2: add missing AddItemStatementTest for authenticated edit (user shows up in edit metadata) - @Silvan_WMDE creates task

• create the missing test case in AddItemStatementTest.js
• we want to avoid creating multiple user per test suite to save time

Task 3: extract auth tests into separate file - @Jakob_WMDE creates task

• extract all auth tests into a separate test file instead of repeating them for every route test suite
• similar to conditional request tests