fix: create parent directory before report files

[nathanperkins]

• Add os.MkdirAll(dst) before any os.Create(dst) calls within the reporters/ folder.
• Fix After updating from v1.16 to v2.9, JUnit report fails with "open <file>: no such file or directory" #1210, where the report file fails to create because the parent directory doesn't exist.

[nathanperkins]

I need to manually test this locally to ensure it fixes the problem.

@onsi, do you think this needs automated test coverage?

[onsi]

hey - most of the heavy stuff is integration tested but i think a simple unit test in junit_report_test.go would make sense for this. lemme know if you need help adding one.

[nathanperkins]

You got it! One sec :)

[onsi]

thanks will pull it in once ci runs

[nathanperkins]

@onsi, I added test coverage for JSON, JUnit and TeamCity. For JSON and TeamCity, there were no tests so I copied some setup data over.

There weren't any existing test cases for the MergeAndCleanup functions so I didn't make coverage for those.

Let me know if you need anything else! Thanks again for your quick responses and maintaining this so carefully! :)

[onsi]

Thanks for the PR and for adding the tests!

[onsi]

this is out now in 2.9.6 - thanks @nathanperkins !