PHP PHPUnit assertLessThanOrEqual()用法及代碼示例

assertLessThanOrEqual()函數是PHPUnit中的內置函數，用於斷言實際獲得的值是否小於或等於預期值。如果實際值小於或等於期望值，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:

assertLessThanOrEqual(mixed $expected, mixed $actual
[, string $message = ''])

參數：此函數接受上述和以下所述的三個參數：

$expected:此參數可以是代表期望數據的任何類型的數值。
$actual:此參數可以是代表實際數據的任何類型的數值。
$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中的assertLessThanOrEqual()函數：

範例1：

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testNegativeForassertLessThanOrEqualWithEqualVal() 
    {    $expected = 22;  
        $actual = 420; 
        // Assert function to test whether expected  
        // value is less than actual or not  
        $this->assertLessThanOrEqual(  
            $expected,  
            $actual,  
            "actual value is Less than or equal to expected"
        ); 
          
    } 
   
  
      
    public function testNegativeForassertLessThanOrEqualWithLessVal() 
    {   
     $expected = 22;  
        $actual = 220; 
        // Assert function to test whether expected  
        // value is less than actual or not  
          
        $this->assertLessThanOrEqual(  
            $expected,  
            $actual,  
            "actual value is Less than or equal to expected"
        );  
    }   
 }  
?>

輸出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

FF                                                          2 / 2 (100%)

Time:91 ms, Memory:10.00 MB

There were 2 failures:

1) GeeksPhpunitTestCase::testNegativeForassertLessThanOrEqualWithEqualVal
actual value is Less than or equal to expected
Failed asserting that 420 is equal to 22 or is less than 22.

/home/lovely/Documents/php/test.php:15

2) GeeksPhpunitTestCase::testNegativeForassertLessThanOrEqualWithLessVal
actual value is Less than or equal to expected
Failed asserting that 220 is equal to 22 or is less than 22.

/home/lovely/Documents/php/test.php:32

FAILURES!
Tests:2, Assertions:4, Failures:2.

範例2：

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveForassertLessThanOrEqualWithEqualVal() 
    {    $expected = 22;  
        $actual = 10; 
        // Assert function to test whether expected  
        // value is less than actual or not  
        $this->assertLessThanOrEqual(  
            $expected,  
            $actual,  
            "actual value is greater than or equal to expected"
        ); 
          
    } 
   
  
      
    public function testPositiveForassertLessThanOrEqualWithLessVal() 
    {   
     $expected = 22;  
        $actual = 22; 
        // Assert function to test whether expected  
        // value is less than actual or not  
          
        $this->assertLessThanOrEqual(  
            $expected,  
            $actual,  
            "actual value is greater than or equal to expected"
        );  
    }   
 }  
?>

輸出：

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

..                                                 2 / 2 (100%)

Time:87 ms, Memory:10.00 MB

OK (2 tests, 4 assertions)
lovely@lovely:~/Documents/php$ ./phpunit test.php


PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

..                                                 2 / 2 (100%)

Time:87 ms, Memory:10.00 MB

OK (2 tests, 4 assertions)

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

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