PHPUnit assertNotFalse() Function

The assertNotFalse() function is a builtin function in PHPUnit and is used to assert the conditional value is true. This assertion will return true in the case if the conditional value is true else return false. In case of true, the asserted test case got passed else test case got failed.

Syntax :

assertNotFalse(bool $condition[, string $message = ''])

Parameters: This function accepts three parameters as mentioned above and described below:

• $condition: This parameter is of any type of value that represents the true or false.
• $message: This parameter takes a string value. When the test case got failed this string message got displayed as an error message.

Below examples illustrate the assertNotfalse() function in PHPUnit:

Example 1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForassertNotFalse()
    { 
        $condition = false;
        
  
        // Assert function to test whether
        // condition value is true or not 
        $this->assertNotFalse(
        
            $condition, 
            "condition is true or false"
        ); 
    } 
} 
  
?> 

Output:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

F                                                  1 / 1 (100%)

Time: 95 ms, Memory: 10.00 MB

There was 1 failure:

1) GeeksPhpunitTestCase::testNegativeTestcaseForassertNotFalse
condition is true or false
Failed asserting that false is not false.

/home/lovely/Documents/php/test.php:17

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

Example 2:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPsitiveTestcaseForassertNotFalse()
    { 
        $condition = "false";
        
  
        // Assert function to test whether
        // condition value is true or not 
        $this->assertNotFalse(
        
            $condition, 
            "condition is true or false"
        ); 
    } 
} 
  
?> 

Output:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                                 1 / 1 (100%)

Time: 91 ms, Memory: 10.00 MB

OK (1 test, 1 assertion)