PHP PHPUnit assertEqualsCanonicalizing()用法及代碼示例

assertEqualsCanonicalizing()函數是PHPUnit中的內置函數，用於斷言期望變量和實際變量是否相等。在實際比較之前，將對兩個數組進行排序和比較之前的標準均值。如果期望值和實際值相同，則該斷言將返回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:

assertEqualsCanonicalizing( mixed $expected, mixed $actual, string $message = '' )

參數：該函數接受三個參數，如上麵的語法所示。參數說明如下：

• $expected:該參數是一個混合變量，表示期望值。
• $actual:此參數是一個混合變量，表示要與期望值進行比較的實際值。
• $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。

以下程序說明了PHPUnit中的assertEqualsCanonicalizing()函數：

程序1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForAssertEqualsCanonicalizing() 
    { 
        $expected = array(1, 2, 3, 4); 
        $actual = array(2, 1, 2, 4); 
  
        // Assert function to test whether expected  
        // and actual are canonically equal or not. 
        $this->assertEqualsCanonicalizing( 
            $expected, $actual,  
            "expected and actual are not canonically equals"
        ); 
    } 
} 
  
?>

輸出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)

Time:65 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertEqualsCanonicalizing
expected and actual are not canonically equals
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
     0 => 1
     1 => 2
-    2 => 3
+    2 => 2
     3 => 4
 )

/home/shivam/Documents/geeks/phpunit/abc.php:13

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

程序2:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPositiveTestcaseForAssertEqualsCanonicalizing() 
    { 
         $expected = array(1, 2, 3, 4); 
        $actual = array(2, 1, 3, 4); 
  
        // Assert function to test whether expected  
        // and actual are canonically equal or not. 
        $this->assertEqualsCanonicalizing( 
            $expected, $actual,  
            "expected and actual are not canonically equals"
        ); 
    } 
} 
  
?>

輸出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time:67 ms, Memory:10.00 MB

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。另外，phpunit 7及更高版本支持assertEqualsCanonicalizing()。