实现 PHPUnit_Framework_Test
最后更新于：2022-04-01 03:46:55
# 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.
~~~