BUnity is a Bash Unit testing framework. It's a so simple framework for give some testing features for Bash scripting. Actually, it offers only three functions:

• setup, which must be start the test script;
• teardown, which must be invoked as the very last function of the testing script; and
• assert_equals, to test equalities.

The script test_example.sh is an example of using it.

Enjoy!