terraform test: Experimental JUnit XML reporting #34291
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I think the implementation here looks good. I'm just worried we're not capturing all the failure cases.
It's possible for a whole file to fail via some of the validation checks we do - maybe this is equivalent to a compile-time error or something in traditional languages?
| totalTests := len(file.Runs) | ||
| totalFails := 0 | ||
| totalErrs := 0 | ||
| for _, run := range file.Runs { |
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It is possible for all the run blocks in a test file to be skipped with the overall file still erroring as we perform some validation over the test file itself. I think in this case there would be no indication the test still failed?
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Can you share some details on how I could recreate the situation you're describing to test with?
So far I've only found cases where the configuration is statically invalid, which prevents the test run from even starting and therefore doesn't produce any test report at all, and that behavior seems consistent with how test harnesses in other languages capable of static validation behave. But if you can think of an example that would be a dynamic failure reported at the whole-file level then I'd like to support that, I just don't know how to create it to test it. 😀
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I was thinking of this function: https://github.com/hashicorp/terraform/blob/main/internal/configs/test_file.go#L147. But it actually only returns warnings at the moment, so I think it's okay for the time being 👍 Something to revisit if we ever add dynamic validation that can actually fail!
| errorsName := xml.Name{Local: "errors"} | ||
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| enc.EncodeToken(xml.StartElement{Name: suitesName}) | ||
| for _, file := range suite.Files { |
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The test file itself can have error diagnostics attached to it, and I think they're not being exposed anywhere at the moment. Is there somewhere we can surface those?
This adds an experimental new option -junit-xml=FILENAME for the "terraform test" command. When specified, it writes a JUnit XML report to the specified filename once the test run is complete, while continuing to report test progress in the UI in the usual way. This is only experimental for now because it remains to be seen if this particular mapping to the JUnit XML schema is actually useful in real software -- this format is woefully underdocumented and implemented slightly differently by each consumer -- and so we might change this significantly before stabilizing it, or remove it altogether if it turns out that there's no useful mapping to JUnit XML here. Hopefully those who are interested in JUnit XML reports will try this experiment against their favorite JUnit XML-consuming software and report back whether the report is presented in a helpful way. It's a de-facto convention for JUnit XML to be reported separately to a file, rather than replacing the normal test run output, since tools that consume this format tend to present its results in a separate and less prominent place than the output of the command itself. This option is designed to follow that convention for consistency with various other software that produces this format. The implementation here is intentionally pretty minimal and simplistic just as a starting point for gathering feedback. The main priority is that it be easy to evolve this based on feedback and to remove it altogether if we decide not to stabilize this at all. If this does become stabilized, it might deserve being factored out into a separate package so that we can minimize the amount of logic embedded directly inside the views package, and it will certainly need some unit tests to represent what we've committed to supporting in future versions.
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If any of the In my experience, that's the typical treatment of "compile-time" errors in test harnesses in other languages that have a distinction between static and dynamic errors, because of course the test program can't even compile if it isn't valid. Therefore I think that's an acceptable compromise here, too. Back when I was working on JUnit XML for the previous incarnation of the testing experiment I found that CI tools which support this format tend to treat the absence of the file as a total test failure, and then the static errors get captured and reported as part of the main run output rather than as part of the test result report. I've not re-tested this with any JUnit-supporting tools yet because I no longer have any of them set up to test with, but hopefully we can learn from feedback from the experimental version in alpha if that assumption still holds for newer tools like Azure DevOps. |
Previously we were just ignoring skipped runs completely, but JUnit XML has some elements/attributes for describing those and so we'll populate those too now.
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I think this should now be complete enough to make for a reasonable experimental inclusion in an alpha release so we can have the folks who want to use it test it with the CI/CD software they use. If this approach seems promising based on that feedback, we can flesh it out further, add tests for it, etc. |
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Reminder for the merging maintainer: if this is a user-visible change, please update the changelog on the appropriate release branch. |
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This is precisely what I've been searching for. We are interested in reporting test outputs in GitLab, which, at present, only accommodates test reports in the JUnit report format. For more information, you can refer to their documentation: https://docs.gitlab.com/ee/ci/testing/unit_test_reports.html. I built terraform using 'go install' on branch main from https://github.com/hashicorp/terraform. This results in ckiefer@machine:~/git-repos/terraform$ /home/ckiefer/GO/bin/terraform -v When I run it in the folder where I have the tests, I get: ckiefer@machine:~/git-repos/terraform-google-bucket$ /home/ckiefer/GO/bin/terraform test -junit-xml=test-out-junit.xml │ Error: JUnit XML output is not available @apparentlymart Could you please advice how to proceed from here in order to successfully generate an output in JUnit format? Many thanks for the valuable work done by everybody. |
@ckiefer - Use the following to ensure the experimental features are enabled in your build:
This is as per the header in the |
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Hi all, @ExtelligenceIT is correct that you can build an experiments-enabled build for yourself manually that way. Experiments are always enabled in our alpha release builds, so my plan for this change had been to wait until the first v1.8.0-alpha release and then invite folks to test and give feedback based on that. We typically do experiment-feedback discussions over in our community forum rather than in GitHub just because it's easier then to keep all of the feedback and discussion in one spot while things are (sometimes) changing quickly, and so once we do reach the first alpha (which should appear once the v1.7.x patch releases settle down) I'll start a topic in the community forum and link it from #34264 so we can talk about it all in one place. I would not suggest trying to discuss the change right here in this PR just because our closed-PR-locking bot will lock discussion here soon (since the change has been merged), and it'll be frustrating to have an ongoing discussion cut off like that. |
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Thanks a lot to both of you, @ExtelligenceIT and @apparentlymart I was able to test this experimental feature, and I also found a bug that I'd like to log and discuss. Just let me know when / where I can do that. |
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I see that the pre-release v1.8.0-alpha20240131 is out: https://github.com/hashicorp/terraform/releases/tag/v1.8.0-alpha20240131 Where in the community can I log any issues regarding the -junit-xml=FILENAME feature? |
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Hi @ckiefer, thanks for trying out the alpha! Please file any issues you find here on GitHub. |
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I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active contributions. |
This adds an experimental new option
-junit-xml=FILENAMEfor theterraform testcommand. When specified, it writes a JUnit XML report to the specified filename once the test run is complete, while continuing to report test progress in the UI in the usual way.I had a little extra time and energy at the end of the day today, just before a long weekend, and so I took a stab at a quick implementation of one possible answer to #34264.
This is only experimental for now because it remains to be seen if this particular mapping to the JUnit XML schema is actually useful in real software -- this format is woefully underdocumented and implemented slightly differently by each consumer -- and so we might change this significantly before stabilizing it, or remove it altogether if it turns out that there's no useful mapping to JUnit XML here. Hopefully those who are interested in #34264 will try this experiment (with a future alpha release, once this is merged) against their favorite JUnit XML-consuming software and report back whether the report is presented in a helpful way.
It's a de-facto convention for JUnit XML to be reported separately to a file, rather than replacing the normal test run output, since tools that consume this format tend to present its results in a separate and less prominent place than the output of the command itself. This option is designed to follow that convention for consistency with various other software that produces this format.
The implementation here is intentionally pretty minimal and simplistic just as a starting point for gathering feedback. The main priority is that it be easy to evolve this based on feedback and to remove it altogether if we decide not to stabilize this at all. If this does become stabilized, it might deserve being factored out into a separate package so that we can minimize the amount of logic embedded directly inside the views package, and it will certainly need some unit tests to represent what we've committed to supporting in future versions.