Migrate JUnit 4 tests to JUnit 5 in org.eclipse.text.tests

[vogella]

No description provided.

[github-actions]

Test Results

 3 018 files   3 018 suites   2h 20m 50s ⏱️
 8 229 tests  7 980 ✅ 249 💤 0 ❌
23 607 runs  22 813 ✅ 794 💤 0 ❌

Results for commit fd4a5b8.

♻️ This comment has been updated with latest results.

[fedejeanne]

The changes LGTM but I see this error in the logs:

 Error: Please always use rebase to update your branch

Infrastructure problem?

Also, the GH bot says this PR removes tests. I hope the information is outdated. One can only double-check that when the tests finish running.

[vogella]

@fedejeanne I pushed a new change set with the changes, lets see if that fix the "removed lots of tests" message.

[fedejeanne]

Hm, the message is still there, but I think I know why (at least in part): some tests require org.junit.jupiter.api.function to work, like you did in #3410 (details in #3410 (comment))

[vogella]

@fedejeanne should be fine now, I plan to merge this in the next days until I hear more feedback.