test

Arguments: expected-value test-form &key (test (function eql)) multiple-values fail-info known-failure

Perform a single test. expected-value is the reference value for the test. test-form is a form that will produce the value to be compared (using the predicate that is the value of the test keyword argument) to expected-value. If the values are not the same, then a failure is logged; otherwise a success is logged.

The comparison is done with the predicate that is the value of the test keyword argument. The default value of test is eql. Other standard comparison functions include eq, equal, equalp, string=, string-equal, etc., and you may, of course, write your own predicate.

Normally, only the first return value from the test-form is considered, however if multiple-values is t, then all values returned from test-form are considered. If multiple-values is true, expected-values must be a list. If the length of the expected-value list differs from the number of returned values, the test will fail.

The value of the fail-info argument should be nil or a string. If a string, it is printed if the test fails, providing more information with a test failure. (Typical strings are "bug2127" and "can fail when network is slow".)

known-failure if true, affects what is printed when the test fails or succeeds. Thus a failure is reported as "Test failed: known failure: ..." and a success as "Expected test failure for [...] did not occur."

See test-harness.htm for information on the Allegro CL test harness.

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This page was not revised from the 10.0 page.
Created 2019.8.20.