PHP PHPUnit assertDirectoryIsReadable()用法及代码示例

assertDirectoryIsReadable()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读目录。如果给定目录路径存在并且可读，则此断言将返回true，否则返回false。如果为真，则通过断言的测试用例，否则测试用例失败。

用法:

assertDirectoryIsReadable( integer $directory, string $message = '' )

参数：该函数接受两个参数，如上面的语法所示。参数说明如下：

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

以下程序说明了PHPUnit中的assertDirectoryIsReadable()函数：

程序1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForAssertDirectoryIsReadable() 
    { 
        $directoryPath = "/home/shivam/Documents/phpunit/notreadable"; 
  
        // Assert function to test whether the given 
        // directory path either exists and readable 
        $this->assertDirectoryIsReadable( 
            $directoryPath, 
            "directoryPath  exists and readable"
        ); 
    } 
} 
  
?>

输出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)

Time:89 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertDirectoryIsReadable
directoryPath  exists and readable
Failed asserting that directory "/home/shivam/Documents/geeks/pgp" exists.

/home/shivam/Documents/geeks/phpunit/abc.php:13

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

程序2:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPositiveTestcaseForAssertDirectoryIsReadable() 
    { 
        $directoryPath = "/home/shivam/Documents/geeks"; 
  
        // Assert function to test whether given 
        // directory path exists and readable 
        $this->assertDirectoryIsReadable( 
            $directoryPath, 
            "directoryPath exists and readable"
        ); 
    } 
} 
  
?>

输出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time:67 ms, Memory:10.00 MB

OK (1 test, 1 assertion)

注意：要使用phpunit运行测试用例，请遵循此处的步骤。另外，phpunit 7及更高版本支持assertDirectoryIsReadable()。