Easier to read and write, and ensures that the tests exercise valid AST instead of synthetic structures that can never exist.
Change-Id: I5d361ef96383c71943a424f5765952f21d740042
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/36422
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>