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Section 6-1.  More setUp( ) than tearDown( )

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6-1. More setUp( ) than tearDown( )

setUp( ) and tearDown( ) are nicely symmetrical in theory but not in practice. In practice, you only need to implement tearDown( ) if you have allocated external resources such as files or sockets in setUp( ). If your setUp( ) just creates plain PHP objects, you can generally ignore tearDown( ). However, if you create many objects in your setUp( ), you might want to unset( ) the variables pointing to those objects in your tearDown( ) so they can be garbage collected. The garbage collection of test-case objects is not predictable.


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