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PHP PHPUnit assertFileExists()用法及代碼示例

assertFileExists()函數是PHPUnit中的內置函數,用於檢查文件路徑是否存在。如果給定文件路徑存在,則此斷言將返回true,否則返回false。如果為真,則通過斷言的測試用例,否則測試用例失敗。

用法:

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

參數:此函數接受上述和以下描述的兩個參數:

  • $filename:此參數是表示文件路徑的字符串。
  • $message:此參數采用字符串值。當測試用例失敗時,此字符串消息將顯示為錯誤消息。

以下示例程序旨在說明PHPUnit中的assertFileExists()函數:

範例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"
        );  
    }  
}  
    
?> 

輸出:

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.

範例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"
        );  
    }  
}  
    
?> 

輸出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                             1 / 1 (100%)

Time:88 ms, Memory:10.00 MB

OK (1 test, 1 assertion)

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




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注:本文由純淨天空篩選整理自shubham_singh大神的英文原創作品 PHPUnit assertFileExists() Function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。