tree e4059c249e2c54bf3374378270d43a1c6761cc4b
parent 704d18abd8b67b5bc4b6e3ed72a6406db6a5023d
author pq <pquitslund@google.com> 1618266186 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1618266186 +0000

[test util] display error info on failed parse

Example output:


```
  Invalid argument(s): Content produced diagnostics when parsed:
    MISSING_IDENTIFIER: Expected an identifier. - 9:15
    EXPECTED_TOKEN: Expected to find ';'. - 9:7
    MISSING_IDENTIFIER: Expected an identifier. - 9:12
    MISSING_IDENTIFIER: Expected an identifier. - 9:10
    EXPECTED_TOKEN: Expected to find ':'. - 9:15
    UNEXPECTED_TOKEN: Unexpected text ';'. - 9:15
    EXPECTED_TOKEN: Expected to find ';'. - 9:15
```

Change-Id: Icbeeaca147e70e553a3c2b7809edff1c8fb8721f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195049
Commit-Queue: Phil Quitslund <pquitslund@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>