DemandEquility is used to test equality between one value and another.

DemandFailure is used to test for a value which indicates an 'unsuccessful' value for the type.

DemandImplements tests whether an instance is an implementation of type T.

DemandSucess is used to test for a value which indicates an 'successful' value for the type.

ExpectApproximate is used to test approximate equality between one value and another.

ExpectEquality is used to test equality between one value and another.

ExpectFailure tests for an 'unsucessful value for the value's type.

ExpectInequality is used to test inequality between one value and another.

ExpectSuccess tests for a 'sucessful' value for the value's type.

Writer is an implementation of the io.Writer interface.

Approximate constraint used by ExpectApproximate() function.