assert-equality (test expected form &rest extras)

test -- a predicate with two arguments
expected -- the expected value
form -- an test form
extras -- to be printed if the test fails

Return value is unspecified.

Assertion with a user defined predicate.

These macros tally a failure if the value expected is not equal to the result returned by form, using the specified equality predicate test.

In general, assert-equal is used for most tests. But any binary predicate can be used, with assert-equality, e.g.,

  (assert-equality #'unordered-equal 
                   '(a b c) (unique-atoms '((b c) a ((b a) c))))   

Besides the predicate unordered-equal, the predicates set-equal and logically-equal might be useful.

See assert-eq for a detailed description of assert macros.