Runs mix test.
Options
:scope—:all,:stale, or:related. Default:all.:args— extra CLI args appended after the task name and any scope-derived flag. Default[]. Example:["--warnings-as-errors"].
Argument order: mix test [--stale] <user_args...> [-- <related_test_files>].
The -- before related paths stops mix test parsing a --prefixed path
as an option.
Defaults
stage_fixed: falsefiles: ~w(**/*.ex **/*.exs)scope: :all
:related with no resolvable tests
When scope: :related is selected and related_test_files/1 produces
an empty list (no lib/foo.ex → test/foo_test.exs mappings exist on
disk), the hook returns :ok without invoking mix test. Falling
through to a bare mix test would silently run the entire suite,
which is the opposite of what the caller asked for.