jasmine_node_test bazel coverage support

[Toxicable]

🚀 feature request

Relevant Rules

jasmine_node_test

Description

Describe the solution you'd like

Add support for the bazel coverage command

We currently support coverage via the coverage = True flag which outputs a text summary of the coverage collected by that rule. 9abc78f
This however does not merge coverage between targets

The solution is to use the bazel coverage command to aggregate and merge coverage reports from the various targets throughout a repository.

Currently sort of blocked by bazelbuild/bazel#5885
There is no general way to utilise bazel coverage but it is possible to hack around it.

Describe alternatives you've considered

This is the only option for coverage under jasmine throughout a repository

[Toxicable]

I just found COVERAGE_OUTPUT_FILE which is an env var set by bazel that that tells you were to write coverage files

[Toxicable]

Another related link.
Looks like each build rule can return a provider for coverage to indicate which files should be instrumented.
https://docs.bazel.build/versions/0.23.0/skylark/rules.html#code-coverage-instrumentation

We should use this instead of parsing through the manifest file to know what files we should collect coverage for

[github-actions]

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[github-actions]

This issue was automatically closed because it went two weeks without a reply since it was labeled "Can Close?"