The assertNotEquals() function is a builtin function in PHPUnit and is used to assert the actual obtained value to be not-equals to expected value. This assertion will return true in the case if the expected value is not-equals to actual value else returns false. In case of true the asserted test case got passed else test case got failed.
assertNotEquals( mixed $expected, mixed $actual, string $message = '' )
Parameters: This function accepts three parameters as shown in the above syntax. The parameters are described below:
- $expected: This parameter is of any type which represent the expected data.
- $actual: This parameter is of any type which represent the actual data.
- $message: This parameter takes string value. When the testcase got failed this string message got displayed as error message.
Below programs illustrate the assertNotEquals() function in PHPUnit:
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::testNegativeTestcaseForAssertNotEquals actual value is equals to expected Failed asserting that 'geeks' is not equal to 'geeks'. /home/shivam/Documents/geeks/phpunit/abc.php:15 FAILURES! Tests: 1, Assertions: 1, Failures: 1.
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 follow steps from here. Also, assertNotEquals() is supported by phpunit 7 and above.
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