will generate a failure and print the difference of the two
strings.
+ test_expect_equal_failure <output> <expected>
+
+ This works similar to test_expect_equal (see above) but is used to
+ mark a test that demonstrates a known breakage, (that is, the
+ author of the test expectes "output" and "expected" to differ until
+ the breakage is fixed). See test_expect_failure for details.
+
test_debug <script>
This takes a single argument, <script>, and evaluates it only