7-2. Performance Regressions

You can extend your test class from PHPUnit2_Extensions_ PerformanceTestCase to test whether the execution of a function or a method call, for instance, exceeds a specified time limit.

Example 8 shows how to subclass PHPUnit2_Extensions_ PerformanceTestCase and use its setMaxRunningTime( ) method to set the maximum running time for the test. If the test is not executed within this time limit, it will be counted as a failure.

Example 8. Using PHPUnit2_Extensions_PerformanceTestCase

<?php 
require_once 'PHPUnit2/Extensions/PerformanceTestCase.php';

class PerformanceTest extends PHPUnit2_Extensions_ 
PerformanceTestCase {
  public function testPerformance( ) {
		$this->setMaxRunningTime(2);
		sleep(1);
	} 
} 
?>

Table 2 shows the external protocol implemented by PHPUnit2_Extensions_PerformanceTestCase.

Table 2. Performance TestCase external protocols

Method	Description
void setMaxRunningTime(integer $maxRunningTime)	Sets the maximum running time for the test to $maxRunningTime (in seconds)..
integer getMaxRunningTime( )	Returns the maximum running time allowed for the test.