[Feature]: Compare snapshot with file outside test snapshot directory

[TadasV1]

🚀 Feature Request

Allow to pass outside test dir snapshot file to toHaveScreenshot function

Example

// tests/B/B.test.js

const path = /tests/A/A.test.js-snapshots/A-1-${project}-win32.png
await expect(page).toHaveScreenshot(path)

Motivation

• some tests have screenshots that are the same as in another
• these tests produce many screenshots + multiply by different projects

This creates an unnecessary files to review for these screenshots which are identical.

[pavelfeldman]

You can control the way your expectations are matched with https://playwright.dev/docs/api/class-testproject#test-project-snapshot-path-template and the actual toHaveScreenshot name parameter. Do you think you can use these two to achieve your goal?

[TadasV1]

Unfortunately not. Maybe some example will give more insights.

• I need featureA1 to compare to featureA screenshot
• featureA snapshots are located in its own snapshot directory
• featureA(i) generate same screenshots
• tests are seperate files:
  > featureA.test.js -- 5 screenshots [1, 2, 3, 4, 5]
  > featureA1.test.js -- 3 screenshots [2, 4, 5]
  > ...
  > featureA23.test.js -- 2 screenshots [1, 4]

For now I am keeping the redundant files.

[pavelfeldman]

with the snapshot dir template set as this: {testDir}/__screenshots__/{arg}{ext}, you'll be able to use explicit names for your expectations across the files. Why does not it work for you? It does address the use case you provide above.

[pavelfeldman]

Closing as per above, please feel free to open a new issue if this does not cover your use case.