Pass $(location) to Bazel --test_arg

Question

The question

Is it possible to pass a general $(location) to bazel test in the --test_args argument which is re-evaluated for each executed test?

Context

What I am trying to do is use bazel test to bulk execute tests, but produce unique output files.

I am using Catch2 with the --out argument to specify a JUnit XML output file location. I could have Catch2 output the JUnit to STDOUT, but the test.log gets somewhat polluted with test data produced by Bazel, and any other STDOUT, or STDERR that Catch2 produces.

eg. I am trying to produce the following:

• ./bazel-testlogs/
  • Folder
    • Tests
      • Test1
        • Test1_JUNIT.xml
      • Test2
        • Test2_JUNIT.xml

Answer 1

We ended up patching Catch2 to look for the XML_OUTPUT_FILE environment variable, and use that as the report output path. The inspiration came from this similar post.