PHPUnit assertIsNotIterable() Function

The assertIsNotIterable() function is a builtin function in PHPUnit and is used to assert whether the given variable is not Iterable. This assertion will return true in the case if the given variable is not Iterable else returns false. In case of true the asserted test case got passed else test case got failed.

Syntax:

assertIsNotIterable($actual[, $message = ''])

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

• $variable: This parameter is of any type of variable which represents the actual data.
• $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 assertIsNotIterable() function in PHPUnit:

Example 1:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testNegativeTestcaseForassertIsNotIterable()
    { 
       $variable = ([1, 2, 3]);
        // Assert function to test whether assert
        //  variable is Iterable
        $this->assertIsNotIterable(
            $variable,
            "assert variable is Iterable"
        );
        
    }
 
 } 
?> 

Output:

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::testNegativeTestcaseForassertIsNotIterable
assert variable is Iterable
Failed asserting that Array &0 (
  0 => 1
  1 => 2
  2 => 3
) is not of type "iterable".

/home/lovely/Documents/php/test.php:14

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

Example 2:

<?php 
use PHPUnit\Framework\TestCase; 
  
class GeeksPhpunitTestCase extends TestCase 
{ 
    public function testPositiveTestcaseForassertIsNotIterable()
    { 
       $variable = "[1, 2, 3]";
        // Assert function to test whether assert
        //  variable is Iterable
        $this->assertIsNotIterable(
            $variable,
            "assert variable is Iterable"
        );
        
    }
 
 } 
?> 

Output:

PHPUnit 8.5.8 by Sebastian Bergmann and contributors.

.                                                 1 / 1 (100%)

Time: 86 ms, Memory: 10.00 MB

OK (1 test, 1 assertion)