Test: add option to record passes and enable it for CI

[IanButterworth]

Related to #57686

Investigating how feasible it would be to record test passes in full so they can be used by buildkite analytics. They are currently just counted.

Todo

• There's some dummy recording going on that needs removing if this is enabled

  julia/test/runtests.jl

  Lines 381 to 395 in 0b9525b

  	elseif isa(resp, Test.TestSetException)
  	fake = Test.DefaultTestSet(testname)
  	fake.time_end = fake.time_start + duration
  	for i in 1:resp.pass
  	Test.record(fake, Test.Pass(:test, nothing, nothing, nothing, LineNumberNode(@__LINE__, @__FILE__)))
  	end
  	for i in 1:resp.broken
  	Test.record(fake, Test.Broken(:test, nothing))
  	end
  	for t in resp.errors_and_fails
  	Test.record(fake, t)
  	end
  	Test.push_testset(fake)
  	Test.record(o_ts, fake)
  	Test.pop_testset()

• Figure out why the weakref test is failing. I think the Pass object might be retaining a reference?

[Seelengrab]

Suggested change

# For a passed result, do not store the result since it uses a lot of memory

This comment should be removed/changed to mention that this only happens conditionally with this PR.

[IanButterworth]

Thanks. Yeah this is more of an investigation of the performance/test side effect implications currently.

[Seelengrab]

withenv?

[KristofferC]

For some history: #20137 + #20150

[DilumAluthge]

Instead of keeping all the successful tests in memory, could we stream them to a file?

This would be off by default, and we'd turn it on only in Buildkite CI.