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PHPUnit | AssertStringContainsStringIgnoringCase () Function

Syntax :
assertStringContainsStringIgnoringCase (string $substring, string $string, string $message = ’’]) 
Parameters : This function takes three parameters as shown in the above syntax. The parameters are described below:
  • $substring : This parameter represents a string that will be a substring of the given string.
  • $string : This parameter is a string for which the assert function will check if it contains a substring (ignoring case) or not.
  • $message : This parameter accepts a string value. When the test case failed, this string message was displayed as an error message.
  • The following programs illustrate the assertStringContainsStringIgnoringCase() function: Program 1 : use PHPUnitFrameworkTestCase; class GeeksPhpunitTestCase extends TestCase { public function testNegativeTestcaseForAssertStringContainsStringIgnoringCase() { $testString = " geekforgeek " ; $substring = "engineer" ; // assert function to check if ’ engineer ’ substring testString, ignoring case sensitivity $this -> assertStringContainsStringIgnoringCase ( $substring , $testString , "testString doesn’t contains’ engineer’ as substring " ); } }  
    ?>
    Output:
    PHPUnit 8.2. 5 by Sebastian Bergmann and contributors. F 1/1 (100%) Time: 67 ms, Memory: 10.00 MB There was 1 failure: 1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertStringContainsStringIgnoringCase testString doesn’t contains ’engineer’ as substring Failed asserting that’ geekforgeek’ contains "engineer". /home/shivam/Documents/engineer/phpunit/abc.php:11 FAILURES! Tests: 1, Assertions: 1, Failures: 1. 
    Program 2 : use PHPUnitFrameworkTestCase; class GeeksPhpunitTestCase extends TestCase { public function testPositiveTestcaseForAssertStringContainsStringIgnoringCase() { $testString = " geekforgeek " ; $substring = "geEk" ; // assert function to check if ’ gEek ’ substring testString $this -> assertStringContainsStringIgnoringCase ( $substring , $testString , "testString doesn’t contains’ geEk’ as substring " ); } }  
    ?>
    Output:
    PHPUnit 8.2. 5 by Sebastian Bergmann and contributors. ... 1/1 (100%) Time: 67 ms, Memory: 10.00 MB OK (1 test, 1 assertion) 
    Note: To run testcases with PHPUnit steps follows from here . Also assertStringContainsStringIgnoringCase() is supported by phpunit 7 and above.

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