PHPUnit | assertArraySubset() function Last Updated : 19 Jul, 2019 Summarize Comments Improve Suggest changes Share Like Article Like Report The assertArraySubset() function is a builtin function in PHPUnit and is used to assert an array having a subset.This assertion will return true in the case if the array contains the provided subset else return false and in case of true the asserted test case got passed else test case got failed. Syntax: assertArraySubset(array $subset, array $array[, bool $strict = false, string $message = '']) Parameters: This function accepts four parameters as shown in the above syntax. The parameters are described below: $subset: This parameter represents the subset to be contained in array. $array: This parameter is a array for which the assert function will check whether it contains subset or not. $strict: This parameter is a flag used to compare the identity of objects within arrays. $message: This parameter takes string value. When the testcase got failed this string message got displayed as error message. Below programs illustrate the assertArraySubset() function: Program 1: php <?php use PHPUnit\Framework\TestCase; class GeeksPhpunitTestCase extends TestCase { public function testNegativeTestcaseForArraySubset() { $testArray = array("a"=>"value b", "b" =>" value b"); $subset = array("a"=> "value a"); // assert function to test whether 'subset' is a subset of array $this->assertArraySubset($subset, $testArray, false, "testArray doesn't contains subset as subset") ; } } ?> Output: PHPUnit 6.5.5 by Sebastian Bergmann and contributors. F 1 / 1 (100%) Time: 29 ms, Memory: 4.00MB There was 1 failure: 1) GeeksPhpunitTestCase::testNegativeTestcaseForArraySubset testArray doesn't contains subset as subset Failed asserting that an array has the subset Array &0 ( 'a' => 'value a' ). --- Expected +++ Actual @@ @@ Array ( - [a] => value a + [a] => value b /home/shivam/Documents/geeks/phpunit/abc.php:11 FAILURES! Tests: 1, Assertions: 1, Failures: 1. Program 2: php <?php use PHPUnit\Framework\TestCase; class GeeksPhpunitTestCase extends TestCase { public function testPositiveTestcaseForArraySubset() { $testArray = array("a"=>"value a", "b" =>" value b"); $subset = array("a"=> "value a"); // assert function to test whether 'subset' is a subset of array $this->assertArraySubset($subset, $testArray, false, "testArray doesn't contains subset as subset") ; } } ?> Output: PHPUnit 6.5.5 by Sebastian Bergmann and contributors. . 1 / 1 (100%) Time: 21 ms, Memory: 4.00MB OK (1 test, 1 assertion) Note : To run testcases with phpunit follow steps from here. Comment More infoAdvertise with us Next Article PHPUnit assertTrue() Function S Shivam.Pradhan Follow Improve Article Tags : Web Technologies PHP PHP-function PHP-PHPUnit Similar Reads PHPUnit assertIsArray() Function The assertIsArray() function is a builtin function in PHPUnit and is used to assert whether the given variable is an array or not. This assertion will return true in the case if the given variable is array else returns false. In case of true the asserted test case got passed else test case got faile 2 min read PHPUnit | assertArrayHasKey() function The assertArrayHasKey() function is a builtin function in PHPUnit and is used to assert an array having a particular key or not.This assertion will return true in the case if the array has the provided key else return false and in case of true the asserted test case got passed else test case got fai 2 min read PHPUnit | assertArrayNotHasKey() function The assertArrayNotHasKey() function is a builtin function in PHPUnit and is used to assert an array not having a particular key.This assertion will return true in the case if the array doesn't have the provided key else return false and in case of true the asserted test case got passed else test cas 2 min read PHPUnit assertTrue() Function The assertTrue() function is a builtin function in PHPUnit and is used to assert whether the assert value is true or not. This assertion will return true in the case if the assert value is true else returns false. In case of true the asserted test case got passed else test case got failed. Syntax: a 2 min read PHPUnit assertIsNotArray() Function The assertIsNotArray() function is a builtin function in PHPUnit and is used to assert whether the given variable is not an array. This assertion will return true in the case if the given variable is not array else returns false. In case of true the asserted test case got passed else test case got f 2 min read PHPUnit assertFalse() Function The assertFalse() function is a builtin function in PHPUnit and is used to assert the conditional value is true or false. 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. Synta 2 min read Like