test_runner: add visibility map test

[erikgrinaker]

Verifies that visibility map pages are correctly maintained across shards.

Touches #9914.

[github-actions]

7062 tests run: 6747 passed, 0 failed, 315 skipped (full report)

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Flaky tests (2)

Postgres 17

• test_check_visibility_map: debug-x86-64

Postgres 14

• test_prefetch[None]: release-x86-64

Code coverage* (full report)

• functions: 31.4% (8329 of 26527 functions)
• lines: 47.7% (65604 of 137527 lines)

* collected from Rust tests only

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_{The comment gets automatically updated with the latest test results
d711c80 at 2024-12-10T12:09:42.301Z :recycle:}

[erikgrinaker]

@arssher Mind having a quick look at this?

[arssher]

Do IIUC that the test worked before and after #9895 ?
i.e. it doesn't reveal any real problem?

Also note existence of test_vm_bits.py, I think the test should go there.

[arssher]

Mind having a quick look at this?

missed it earlier, sorry

[erikgrinaker]

Do IIUC that the test worked before and after #9895 ?

That's right, #9895 was not a correctness problem.

Also note existence of test_vm_bits.py, I think the test should go there.

Good call, done.