# 实现 PHPUnit_Framework_Test `PHPUnit_Framework_Test` 接口是比较狭义的，十分容易实现。举例来说，你可以自行为 `PHPUnit_Framework_Test` 编写一个类似于 `PHPUnit_Framework_TestCase` 的实现来运行*数据驱动测试*。 [Example 14.6, “一个数据驱动的测试”](# "Example 14.6. 一个数据驱动的测试")展示了一个数据驱动的测试用例类，对来自 CSV 文件内的值进行比较。这个文件内的每个行看起来类似于 `foo;bar`，第一个值是期望值，第二个值则是实际值。 **Example 14.6. 一个数据驱动的测试** ~~~ <?php class DataDrivenTest implements PHPUnit_Framework_Test { private $lines; public function __construct($dataFile) { $this->lines = file($dataFile); } public function count() { return 1; } public function run(PHPUnit_Framework_TestResult $result = NULL) { if ($result === NULL) { $result = new PHPUnit_Framework_TestResult; } foreach ($this->lines as $line) { $result->startTest($this); PHP_Timer::start(); $stopTime = NULL; list($expected, $actual) = explode(';', $line); try { PHPUnit_Framework_Assert::assertEquals( trim($expected), trim($actual) ); } catch (PHPUnit_Framework_AssertionFailedError $e) { $stopTime = PHP_Timer::stop(); $result->addFailure($this, $e, $stopTime); } catch (Exception $e) { $stopTime = PHP_Timer::stop(); $result->addError($this, $e, $stopTime); } if ($stopTime === NULL) { $stopTime = PHP_Timer::stop(); } $result->endTest($this, $stopTime); } return $result; } } $test = new DataDrivenTest('data_file.csv'); $result = PHPUnit_TextUI_TestRunner::run($test); ?> ~~~ ~~~ PHPUnit 5.0.0 by Sebastian Bergmann and contributors. .F Time: 0 seconds There was 1 failure: 1) DataDrivenTest Failed asserting that two strings are equal. expected string <bar> difference < x> got string <baz> /home/sb/DataDrivenTest.php:32 /home/sb/DataDrivenTest.php:53 FAILURES! Tests: 2, Failures: 1. ~~~