PHPUnit assertDirectoryIsWritable()函数

assertDirectoryIsWritable()函数是 PHPUnit 中的内置函数，用于断言指定的目录是目录还是可写的。如果给定的目录路径存在并且可写，则此断言将返回 true，否则返回 false。如果为真，则断言的测试用例通过，否则测试用例失败。

句法：

assertDirectoryIsWritable(string $directory[, string $message = ''])

参数：该函数接受上面提到的两个参数，如下所述：

$directory：此参数是一个字符串，表示目录路径。
$message：此参数采用字符串值。当测试用例失败时，此字符串消息显示为错误消息。

下面的例子说明了 PHPUnit 中的 assertDirectoryIsWritable()函数：

示例 1：

PHP

assertDirectoryIsWritable( 
            $directoryPath, 
            "directoryPath exists and writable"
        ); 
    } 
} 
    
?>

PHP

assertDirectoryIsWritable( 
            $directoryPath, 
            "directoryPath exists and writable"
        ); 
    } 
} 
    
?>

输出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                                         1 / 1 (100%)

Time: 90 ms, Memory: 10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertDirectoryIsWritable
directoryPath exists and writable
Failed asserting that directory "/home/lovely/Documents/writable" exists.

/home/lovely/Documents/php/test.php:15

FAILURES!
Tests: 1, Assertions: 1, Failures: 1.

示例 2：

PHP

assertDirectoryIsWritable( 
            $directoryPath, 
            "directoryPath exists and writable"
        ); 
    } 
} 
    
?>

输出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                             1 / 1 (100%)

Time: 89 ms, Memory: 10.00 MB

OK (1 test, 2 assertions)