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PHP PHPUnit assertFileExists()用法及代码示例


assertFileExists()函数是PHPUnit中的内置函数,用于检查文件路径是否存在。如果给定文件路径存在,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:

assertFileExists(string $filename[, string $message = ''])

参数:此函数接受上述和以下描述的两个参数:

  • $filename:此参数是表示文件路径的字符串。
  • $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。

以下示例程序旨在说明PHPUnit中的assertFileExists()函数:

范例1:



PHP

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

输出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                             1 / 1 (100%)

Time:391 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertFileExists
given filename doesn't exists
Failed asserting that file "/home/Documents/geeksDoesNotExist/" exists.

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

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

范例2:

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveTestcaseForAssertFileExists()  
    {  
        $filename = "/home/bittu/Documents/php/";  
    
        // Assert function to test whether given  
        // file name exists or not  
        $this->assertFileExists(  
            $filename,  
            "filename doesn't exists"
        );  
    }  
}  
    
?> 

输出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                             1 / 1 (100%)

Time:88 ms, Memory:10.00 MB

OK (1 test, 1 assertion)

参考:https://phpunit.readthedocs.io/en/8.2/assertions.html#assertfileexists




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注:本文由纯净天空筛选整理自shubham_singh大神的英文原创作品 PHPUnit assertFileExists() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。