GitLab

Simplify writing tests that verify promise behaviour by adding a
ScriptPromiseTester helper class.

Use the new class in transform_stream_test.cc and cache_test.cc to prove
the concept.

Change-Id: I52f525506c34d0f38f9627b964bfbfe823ee9e11
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1789206
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699618}