This package provides ArraySubset and related asserts once deprecated in PHPUnit 8

v0.2.1 2020-10-03 21:43 UTC

This package is auto-updated.

Last update: 2021-02-13 13:59:21 UTC


In PHPUnit 8 the function assertArraySubset was deprecated. This function was often misunderstood and thus removed, but it still holds true as a very useful tool, hence it was extracted here.

Disclaimer: The initial version contained here is copied over from phpunit and is heavily based on the original work by Márcio Almada.


Simply use it by importing it with Composer

composer require --dev dms/phpunit-arraysubset-asserts


You have two options to use this in your classes: either directly as a static call or as a trait if you wish to keep existing references working.


namespace DMS\Tests;

use DMS\PHPUnitExtensions\ArraySubset\Assert;
use DMS\PHPUnitExtensions\ArraySubset\ArraySubsetAsserts;
use PHPUnit\Framework\TestCase;

final class AssertTest extends TestCase
    use ArraySubsetAsserts;
    public function testWithTrait(): void
        $expectedSubset = ['bar' => 0];

        $content = ['bar' => '0'];

        self::assertArraySubset($expectedSubset, $content, true);

    public function testWithDirectCall(): void
        $expectedSubset = ['bar' => 0];

        $content = ['bar' => '0'];

        Assert::assertArraySubset($expectedSubset, $content, true);