There are other types of assertions in Test::Unit:
| Method | Description |
|---|---|
| assert(<boolean expression>) | Passes only if the Boolean expression isn't false or nil for example, assert 2 == 1 will always fail). |
| assert_equal(expected, actual) | Passes only if the expected and actual values are equal as compared with the == operator. assert_equal('A', 'a'.upcase) will pass. |
| assert_not_equal(expected, actual) | The opposite of assert_equal. This test will fail if the expected and actual values are equal. |
| assert_raise(exception_type, ..) { <code block> } | Passes only if the code block following the assertion raises an exception of the type(s) passed as arguments. assert_raise (ZeroDivisionError) { 2 / 0 } will pass. |
| assert_nothing_raised(exception_type, ..) { } | The opposite of assert_raise. Passes only if none of the exceptions listed are raised. |
| assert_instance_of(class_expected, object) | Passes only if object is of class class_expected. |
| flunk | flunk is a special type of assertion and it will always fail. It's useful if you haven't quite finished writing your tests. |
All the preceding assertions, including flunk, can take an optional message argument as the last argument, as with assert_equal.