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PHP PHPUnit assertStringStartsWith()用法及代碼示例

assertStringStartsWith()函數是PHPUnit中的內置函數,用於斷言實際字符串是否以預期的前綴字符串開頭。如果實際字符串以預期的前綴字符串開頭,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:

assertStringStartsWith(string $prefix, string $string
[, string $message = ''])

參數:此函數接受上述和以下所述的三個參數:

  • $expectedprefix:此參數可以是代表所需前綴字符串的任何類型。
  • $actualstring:此參數可以是代表實際字符串的任何類型。
  • $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。

以下示例說明了PHPUnit中的assertStringStartsWith()函數:

範例1:



PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testNegativeTestcaseForassertStringStartsWith() 
    {  
        $expectedprefix = ('dis'); 
        $actualstring = ('agreedis'); 
    
        // Assert function to test whether  
        // actual string content starts with  
        // expected prefix string content or not 
        $this->assertStringStartsWith( 
            $expectedprefix, 
            $actualstring,  
            "actual string content start with expected  
             prefix content or not" 
        );  
    }  
}  
    
?>

輸出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                                         1 / 1 (100%)

Time:89 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForassertStringStartsWith
actual string content start with expected prefix content or not
Failed asserting that 'agreedis' starts with "dis".

/home/lovely/Documents/php/test.php:17

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

範例2:

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveTestcaseForassertStringStartsWith() 
    {  
        $expectedprefix = ('dis'); 
        $actualstring = ('disagree'); 
    
        // Assert function to test whether  
        // actual string content starts with  
        // expected prefix string content or not 
        $this->assertStringStartsWith( 
            $expectedprefix, 
            $actualstring,  
            "actual string content start with expected  
             prefix content or not" 
        );  
    }  
}  
    
?>

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/9.2/assertions.html#assertstringstartswith




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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 assertStringStartsWith() 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。