PHP PHPUnit assertFalse()用法及代碼示例

assertFalse()函數是PHPUnit中的內置函數，用於斷言條件值是true還是false。如果條件值為true，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:

assertFalse(bool $condition[, string $message = ''])

參數：此函數接受上述和以下描述的兩個參數：

• $condition:此參數是代表true或false的任何類型的值。
• $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：Parameters中的assertfalse()函數：

範例1：

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testNegativeTestcaseForassertFalse() 
    {  
        $condition = true; 
          
    
        // Assert function to test whether 
        // condition value is true or not  
        $this->assertFalse( 
          
            $condition,  
            "condition is true or false"
        );  
    }  
}  
    
?>

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::testPsitiveTestcaseForassertFalse
condition is true or false
Failed asserting that true is false.

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

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

範例2：

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveTestcaseForassertFalse() 
    {  
        $condition = false; 
          
    
        // Assert function to test whether 
        // condition value is true or not  
        $this->assertFalse( 
          
            $condition,  
            "condition is true or false"
        );  
    }  
}  
    
?>

輸出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                                  1 / 1 (100%)

Time:89 ms, Memory:10.00 MB

OK (1 test, 1 assertion)

參考：https://phpunit.readthedocs.io/en/9.2/assertions.html#assertfalse