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PHPunit | AssertEmpty () function

Syntax:
assertEmpty (mixed $dataHolder, string $message = ’’) 
Parameters: this function takes two parameters as shown in the above syntax. The parameters are described below:
  • $dataHolder: this parameter of any type represents the data holder to be confirmed.
  • $message: this parameter takes a string value. When the test case failed, this string message was displayed as an error message.
The following programs illustrate the assertEmpty() function in PHPUnit: Program 1: use PHPUnitFrameworkTestCase; class GeeksPhpunitTestCase extends TestCase { public function testNegativeTestcaseForAssertEmpty() { $dataHolder = ’ test data’ ; // Function assertion to check if // data holder (variable ) empty or not $this -> assertEmpty ( $dataHolder , "data holder is not empty" ); } }  
?>
Output:
PHPUnit 8.2.5 by Sebastian Bergmann and contributors. F 1/1 (100%) Time: 69 ms, Memory: 10.00 MB There was 1 failure: 1) GeeksPhpunitTestCase::testNegativeTestcaseForAssertEmpty data holder is not empty Failed asserting that a string is empty. /home/shivam/Documents/engineer/phpunit/abc.php:13 FAILURES! Tests: 1, Assertions: 1, Failures: 1. 
Program 2: use PHPUnitFrameworkTestCase; class GeeksPhpunitTestCase extends TestCase { public function testPositiveTestcaseForAssertEmpty() { $dataHolder = ’ ’ ; // Assert a function to check if // data holder (variable ) empty or not $this -> assertEmpty ( $dataHolder , "data holder is not empty" ); } }  
?>
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 assertEmpty() is supported by phpunit 7 and above.

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