PHP PHPUnit assertArrayHasKey()用法及代碼示例

assertArrayHasKey()函數是PHPUnit中的內置函數，用於斷言具有特定鍵的數組，如果數組具有提供的鍵，則此斷言將返回true;否則返回false;如果為true，則斷言測試用例通過了，否則測試用例失敗。

用法：

assertArrayHasKey(mixed $key, array $array[, string $message = ''])

參數：該函數接受三個參數，如以上語法所示。參數說明如下：

1. $key：此參數表示數組要包含的鍵的名稱。
2. $array：此參數是要為其搜索 key 的數組。
3. $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assertArrayHasKey()函數：

程序1:：

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForArrayHasKey() 
    { 
        // array to be tested 
        $array  = array('geek' => 'geeksForgeeks', ); 
        // assert function to test whether 'geek' is a key of array 
        $this->assertArrayHasKey('geeks', $array, "Array doesn't contains 'geeks' as key"); 
    } 
} 
  
?>

輸出：

PHPUnit 6.5.5 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)

Time:108 ms, Memory:4.00MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForArrayHasKey
Array doesn't contains 'geeks' as key
Failed asserting that an array has the key 'geeks'.

/home/shivam/Documents/geeks/phpunit/abc.php:9

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

程序2:：

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPositiveTestcaseForArrayHasKey() 
    { 
        // array to be tested 
        $array  = array('geeks' => 'geeksForgeeks', ); 
        // assert function to test whether 'geeks' is a key of array 
        $this->assertArrayHasKey('geeks', $array, "Array doesn't contains 'geeks' as key"); 
    } 
} 
  
?>

輸出：

PHPUnit 6.5.5 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time:21 ms, Memory:4.00MB

OK (1 test, 1 assertion)

注意：要使用phpunit運行測試用例，請遵循此處的步驟。