CPLAT-4822: Fail test task if build_runner build fails

[evanweible-wf]

CPLAT-4822

Problem

On Dart 2, the test task currently runs tests via build_runner test, but unfortunately this command does not exit with a non-zero exit code if the build fails, which means that the dart_dev test task can appear as though it passed when in fact no tests were even run.

Solution

When necessary, run build runner build first and fail early if it exits with a non-zero exit code. If it succeeds, then we can proceed to run the tests via build_runner test, knowing that they will actually run.

Testing

• CI passes
• Verify this behavior against the latest react_tracing dart2 branch, which is where we discovered this issue

Code Review

@maxwellpeterson-wf @smaifullerton-wk @seanburke-wf

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

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Questions or Comments? Reach out on Slack: #support-infosec.

[maxwellpeterson-wf]

QA +1

• CI passes
• Verified in react_tracing that this branch properly fails early when running test task and the build fails
• Verified in a project with a working build that it correctly runs tests after the build
• Verified on Dart 1 that no build is run at all

@Workiva/release-management-pp