Args is equivalent to It("").args(...).

Fn creates a FnDescriptor for the given function.

It returns a Case with the given text description.

Test tests fn against the given Case instances.

Any is a Matcher that matches any value.

CommonCmpOpt is cmp.Option shared between tt and evaltest.

Case represents a test case.

FnDescriptor describes a function to test.

Matcher wraps the Match method.

RetValue is an empty interface used in the [Matcher] interface.