# assertTrue() >[info] ## assertTrue(bool $condition[, string $message = '']) 当 `$condition` 为 `FALSE` 时报告错误，错误讯息由 `$message` 指定。 `assertNotTrue()` 是与之相反的断言，接受相同的参数。 **Example A.43. assertTrue() 的用法** ~~~ <?php class TrueTest extends PHPUnit_Framework_TestCase { public function testFailure() { $this->assertTrue(FALSE); } } ?> ~~~ ~~~ phpunit TrueTest PHPUnit 5.0.0 by Sebastian Bergmann and contributors. F Time: 0 seconds, Memory: 5.00Mb There was 1 failure: 1) TrueTest::testFailure Failed asserting that false is true. /home/sb/TrueTest.php:6 FAILURES! Tests: 1, Assertions: 1, Failures: 1. ~~~