Packer test dump commands #13343
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Packer test dump commands #13343
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When running a black-box Packer test, crashes were to be detected automatically so that tests that crash are always reported as a failure. However, the match for detecting that Packer crashed was incorrectly formed, so those weren't detected.
Previous versions of the packerCommand implementation for wrapping a freshly compiled Packer binary to run tests with were a bit opaque, and printing out the logs from a run was defined in `Assert` as a plain checker, using a bit of a clumsy call that repeats already known information like `testing.T`. This commit changes the implementation so that `Dump` becomes a function call akin to the others, which doesn't need any parameter, instead it leverages what if already kept within the packerCommand structure.
In addition to dumping the results of a command, we also now dump the command itself, so we know exactly which command was invoked to produce the result we got.
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Dumping a command's results for black-box tests used to involve creating a checker, adding it to the Assert list, and running the command.
This was a bit verbose, and forced us to forward the testing.T instance to the checker so it could output it.
This PR changes how dumping a test's results work, by adding a
Dump()function to thepackerCommanddirectly, so we lighten the changes needed to have information on the command when troubleshooting/writing a test for Packer using this method.