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PHP PHPUnit assertLessThan()用法及代码示例


assertLessThan()函数是PHPUnit中的内置函数,用于断言实际获得的值是否小于期望值。如果实际值小于期望值,则此断言将返回true,否则返回false。如果为真,则通过断言的测试用例,否则测试用例失败。

用法:

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

参数:此函数接受上述和以下所述的三个参数:

  • $expected:此参数可以是代表期望数据的任何类型的数值。
  • $actual:此参数可以是代表实际数据的任何类型的数值。
  • $message:此参数采用字符串值。当测试用例失败时,此字符串消息将显示为错误消息。

以下示例说明了PHPUnit中的assertLessThan()函数:

范例1:



PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testNegativeTestcaseForassertLessThan() 
    {    $expected = 11;  
        $actual = 22; 
    
        // Assert function to test whether expected  
        // value is less than actual or not  
        $this->assertLessThan(  
            $expected,  
            $actual,  
            "actual value is not less than expected"
        );  
    }  
}  
    
?> 

输出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                                  1 / 1 (100%)

Time:88 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForassertLessThan
actual value is not less than expected
Failed asserting that 22 is less than 11.

/home/lovely/Documents/php/test.php:16

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

范例2:

PHP

<?php  
use PHPUnit\Framework\TestCase;  
    
class GeeksPhpunitTestCase extends TestCase  
{  
    public function testPositiveTestcaseForassertLessThan() 
    {    $expected = 22;  
        $actual = 11; 
    
        // Assert function to test whether expected  
        // value is less than actual or not  
        $this->assertLessThan(  
            $expected,  
            $actual,  
            "actual value is not less than expected"
        );  
    }  
}  
    
?> 

输出:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                                  1 / 1 (100%)

Time:88 ms, Memory:10.00 MB

OK (1 test, 1 assertion)

参考:https://phpunit.readthedocs.io/en/9.2/assertions.html#assertlessthan




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注:本文由纯净天空筛选整理自shubham_singh大神的英文原创作品 PHPUnit assertLessThan() Function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。