# assertStringMatchesFormatFile() >[info] ## assertStringMatchesFormatFile(string $formatFile, string $string[, string $message = '']) 当 `$string` 不匹配于 `$formatFile` 的内容所定义的格式时报告错误，错误讯息由 `$message` 指定。 `assertStringNotMatchesFormatFile()` 是与之相反的断言，接受相同的参数。 **Example A.36. assertStringMatchesFormatFile() 的用法** ~~~ <?php class StringMatchesFormatFileTest extends PHPUnit_Framework_TestCase { public function testFailure() { $this->assertStringMatchesFormatFile('/path/to/expected.txt', 'foo'); } } ?> ~~~ ~~~ phpunit StringMatchesFormatFileTest PHPUnit 5.0.0 by Sebastian Bergmann and contributors. F Time: 0 seconds, Memory: 5.00Mb There was 1 failure: 1) StringMatchesFormatFileTest::testFailure Failed asserting that 'foo' matches PCRE pattern "/^[+-]?\d+ $/s". /home/sb/StringMatchesFormatFileTest.php:6 FAILURES! Tests: 1, Assertions: 2, Failures: 1. ~~~