PHP PHPUnit assertStringNotContainsString()用法及代码示例

assertStringNotContainsString()函数是PHPUnit中的内置函数，用于断言不包含子字符串的字符串。如果该字符串不包含子字符串，则该断言将返回true；否则，该断言将返回false；如果为true，则通过断言的测试用例，否则测试用例将失败。

用法:

assertStringNotContainsString(string $substring, string $string, string $message = ''])

参数：该函数接受三个参数，如上面的语法所示。参数说明如下：

• $substring:此参数表示字符串是给定字符串的子字符串。
• $string:此参数是一个字符串，assert函数将对其检查其是否包含子字符串。
• $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。

以下程序说明了PHPUnit中的assertStringNotContainsString()函数：

程序1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForAssertStringNotContainsString() 
    { 
        $testString = "geeksforgeek"; 
        $substring = "geeks";  
  
        // Assert function to test whether 'geeks' is a  
        // substring of testString 
        $this->assertStringNotContainsString($substring, $testString, 
                          "testString  contains 'geeks' as substring") ; 
    } 
} 
  
?>

输出：

PHPUnit 8.2.5 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)

Time:72 ms, Memory:10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertStringNotContainsString
testString  contains 'geeks' as substring
Failed asserting that 'geeksforgeek' does not contain "geeks".

/home/shivam/Documents/geeks/phpunit/abc.php:11

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

程序2:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPositiveTestcaseForAssertStringNotContainsString() 
    { 
        $testString = "geekforgeek"; 
        $substring = "geeks";  
  
        // Assert function to test whether 'geeks' is a  
        // substring of testString 
        $this->assertStringNotContainsString($substring, $testString,  
                        "testString contains 'geeks' as substring") ; 
    } 
} 
  
?>

输出：

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运行测试用例，请遵循此处的步骤。另外，phpunit 7及更高版本支持assertStringNotContainsString()。