Daniel Arbuckle's Mastering Python

assert methods

Inside our test_addition method, which is a unit test, we used a method called assertEqual to actually check that the result of the code was as expected. TestCase provides a wide range of these assert methods that test for various relationships between our results and what we expected. This is shown in the following code example:

Let's take a closer look at what these assert methods actually do:

• We've already seen the assertEqual method in the previous code example; it checks whether two values are equal and makes the test fail if they are not. The assertNotEqual method performs the inverse operation, checking whether two values ...