• Add `cts validate` command used to check for expectation collisions.
Can be used as a presubmit check.
This is more tightly checked than the previous logic, as this works on just
the expectations, instead of results.
• Fix an issue where the test result reduction could introduce collisions with
'Skip' expectations.
To fix this, the update process first adds 'consumed' results for the skipped
tests, preventing test tree reduction for that part of the tree.
• Fix a bug in the generation of 'New failures' and 'New flakes' which produced
more expectations than was necessary.
The issue here was that the tree roots could contain overlaps, and roots could
be processed before sub-trees, resulting in inefficient expectations.
• Fix collisions in the expectations file, and update with results from
the most recent roll.
Change-Id: I7b64553408998fb4416458ce564fc49c8f6d4d07
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/101860
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
aad2e9c0b5