View source for Unit Test Tutorial 2

=== Notes ===
* As noted, the class extends from PHPUnit_Framework_TestCase.
* Outside of our class, we do a require for the class that we want to test.
* Our class name starts with the name of the class we want to test and has ''Test'' appended to the end. I.E. we are testing ''JArrayHelper'', so our test class is ''JArrayHelperTest''.
* We have two methods that are not part of our tests: ''setUp()'' and ''tearDown()''. As noted in the comments for these methods, ''setUp()'' is called before each test and ''tearDown()'' is called after each test. To clarify, if there are ten tests in a class, they are each called ten times. There are two other methods available that you can supply: ''setUpBeforeClass()'' and ''tearDownAfterClass()''. As the names imply, these are called before and after all the tests from the class are performed, thus getting executed once each.
* Test methods start with the word ''test'' and generally end with the name of the method that is under test. We are testing the ''getColumn()'' method, therefore, our method is called ''testGetColumn()''. As methods get more complicated, more than one method is required for testing. In this situation, method names that describe the general purpose of the method should be used.

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