Dashboard tests

[somebody1234]

Pull Request Description

• Implements https://github.com/enso-org/cloud-v2/issues/631
  • Tests for dashboard (app/ide-desktop/lib/dashboard/):
    • End-to-end tests
    • Unit tests
    • Component tests

The purpose of this PR is to introduce the testing framework - more tests can be added later in separate PRs.

Important Notes

To test, run npm run test in app/ide-desktop, or app/ide-desktop/lib/dashboard/. All tests should pass.

Individual test types can be run using npm run test-unit, npm run test-component and npm run test-e2e in app/ide-desktop/lib/dashboard/.
Individual end-to-end tests can be run using npx playwright test -c playwright-e2e.config.ts test-e2e/<file name>.spec.ts in app/ide-desktop/lib/dashboard/.

End-to-end tests require internet access to pass (for things like fonts).

This PR does check in screenshots to guard against visual regessions (and/or to make visual changes obvious)

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• The documentation has been updated, if necessary.
• Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• All code follows the
  Scala,
  Java,
  and
  Rust
  style guides. In case you are using a language not listed above, follow the Rust style guide.
• All code has been tested:
  • Unit tests have been written where possible.
  • If GUI codebase was changed, the GUI was tested when built using ./run ide build.

[PabloBuchu]

Lots of failed tests with missing snapshot errror..

[somebody1234]

@PabloBuchu that seems to be because the snapshots are platform-specific. i think that's a good thing, because some things (like context menus) are different on each platform. i think the correct move here would be to git add -A + commit + push?

[somebody1234]

speaking of though, that means these should be run on windows too

[somebody1234]

lint check is failing though, one moment...

[somebody1234]

I think this should have some CI changes, since we should test for visual regressions on all platforms, but I think maybe that should wait until it's confirmed that we want to merge this (or wait until this is actually merged in, so that there's something to run in those CI actions)

[somebody1234]

for anyone testing: this does have new folders (caches, test results) which are .gitignored, remember to git add -A; git reset --hard when switching away from this branch

[somebody1234]

what, why did lint hang

[somebody1234]

:D lint finally passes!!!

[somebody1234]

this should still get updated screenshots from macos and windows though. (cc @PabloBuchu)

[somebody1234]

:D (visual regression tests)