chore(test): add no test dir tests, rename testdata dir

[krrrr38]

what

• add tests
  • add web_templates render tests
  • add ansi strip tests
  • add server/metrics tests
  • add recovery test
  • add runtime stats test
• rename directories
  • move fixtures into testdata dir which is golang specific test dir name
  • mv events/matchers into events/mocks/matchers
    • project_command_builder_internal_test raise cyclic import, so reverted.

why

• introduce more unit testings
• In golang, testdata is common name for test speficic files
  • The go tool will ignore a directory named "testdata", making it available to hold ancillary data needed by the tests.
  • https://pkg.go.dev/cmd/go/internal/test

tests

• github actions

references

• Add basic tests coverage for untested files #2665

[nitrocode]

Thanks for adding more tests!

[nitrocode]

Thanks for adding this test!

[nitrocode]

Ah ok I see more commits so I moved this to a draft. Please let us know when this is ready to be reviewed.

[krrrr38]

? github.com/runatlantis/atlantis/server/events/matchers [no test files]

I just tried this no test fix, but it require more refactoring. so not do it in this PR.

Now this PR is ready. Thanks. @nitrocode

[nitrocode]

Thanks for adding more tests! We need so many!!