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<?php declare(strict_types=1); namespace Codeception\Module; /** * Special module for using asserts in your tests. */ class Asserts extends AbstractAsserts { /** * Handles and checks throwables (Exceptions/Errors) called inside the callback function. * Either throwable class name or throwable instance should be provided. * * ```php * <?php * $I->expectThrowable(MyThrowable::class, function() { * $this->doSomethingBad(); * }); * * $I->expectThrowable(new MyException(), function() { * $this->doSomethingBad(); * }); * ``` * If you want to check message or throwable code, you can pass them with throwable instance: * ```php * <?php * // will check that throwable MyError is thrown with "Don't do bad things" message * $I->expectThrowable(new MyError("Don't do bad things"), function() { * $this->doSomethingBad(); * }); * ``` * * @param \Throwable|string $throwable */ public function expectThrowable($throwable, callable $callback): void { if (is_object($throwable)) { $class = get_class($throwable); $msg = $throwable->getMessage(); $code = $throwable->getCode(); } else { $class = $throwable; $msg = null; $code = null; } try { $callback(); } catch (\Throwable $t) { $this->checkThrowable($t, $class, $msg, $code); return; } $this->fail("Expected throwable of class '{$class}' to be thrown, but nothing was caught"); } /** * Check if the given throwable matches the expected data, * fail (throws an exception) if it does not. */ protected function checkThrowable(\Throwable $throwable, string $expectedClass, ?string $expectedMsg, $expectedCode = null): void { if (!($throwable instanceof $expectedClass)) { $this->fail(sprintf( "Exception of class '%s' expected to be thrown, but class '%s' was caught", $expectedClass, get_class($throwable) )); } if (null !== $expectedMsg && $throwable->getMessage() !== $expectedMsg) { $this->fail(sprintf( "Exception of class '%s' expected to have message '%s', but actual message was '%s'", $expectedClass, $expectedMsg, $throwable->getMessage() )); } if (null !== $expectedCode && $throwable->getCode() !== $expectedCode) { $this->fail(sprintf( "Exception of class '%s' expected to have code '%s', but actual code was '%s'", $expectedClass, $expectedCode, $throwable->getCode() )); } $this->assertTrue(true); // increment assertion counter } }