# assertFalse() >[info] ## assertFalse(bool $condition[, string $message = '']) 当 `$condition` 为 `TRUE` 时报告错误，错误讯息由 `$message` 指定。 `assertNotFalse()` 是与之相反的断言，接受相同的参数。 **Example A.18. assertFalse() 的用法** ~~~ <?php class FalseTest extends PHPUnit_Framework_TestCase { public function testFailure() { $this->assertFalse(TRUE); } } ?> ~~~ ~~~ phpunit FalseTest PHPUnit 5.0.0 by Sebastian Bergmann and contributors. F Time: 0 seconds, Memory: 5.00Mb There was 1 failure: 1) FalseTest::testFailure Failed asserting that true is false. /home/sb/FalseTest.php:6 FAILURES! Tests: 1, Assertions: 1, Failures: 1. ~~~