PHP PHPUnit assertDirectoryExists()用法及代码示例

assertDirectoryExists()函数是PHPUnit中的内置函数，用于断言目录路径是否存在。如果给定目录路径存在，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:

assertDirectoryExists( 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assertDirectoryExists()函数：

程序1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForAssertDirectoryExists() 
    { 
        $directoryPath = "/home/shivam/Documents/geeksDoesNotExist/"; 
  
        // Assert function to test whether given 
        // directory path exists or not 
        $this->assertDirectoryExists( 
            $directoryPath, 
            "directoryPath doesn't exists"
        ); 
    } 
} 
  
?>

输出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)

Time:68 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertDirectoryExists
directoryPath doesn't exists
Failed asserting that directory "/home/shivam/Documents/geeksDoesNotExist/" 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 testPositiveTestcaseForAssertDirectoryExists() 
    { 
        $directoryPath = "/home/shivam/Documents/geeks/"; 
  
        // Assert function to test whether given 
        // directory path exists or not 
        $this->assertDirectoryExists( 
            $directoryPath, 
            "directoryPath exists"
        ); 
    } 
} 
  
?>

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assertDirectoryExists()。