Testing

chezmoi uses multiple levels of testing:

1. Unit testing, using testing, and github.com/alecthomas/assert/v2, tests that functions and small components behave as expected for a wide range of inputs, especially edge cases. These are generally found in internal/chezmoi/*_test.go.

2. Filesystem integration tests, using testing and github.com/twpayne/go-vfs/v5, test chezmoi's effects on the filesystem. This include some tests in internal/chezmoi/*_test.go, and higher level command tests in internal/cmd/*cmd_test.go.

3. High-level integration tests using github.com/rogpeppe/go-internal/testscript are in internal/cmd/testdata/scripts/*.txtar and are run by internal/cmd/main_test.go.

4. Linux distribution and OS tests run the full test suite using Docker for different Linux distributions (in assets/docker) and Vagrant for different OSes (in assets/vagrant). Windows tests are run in GitHub Actions.