Code Inspection: Assertion can be replaced with 'assertEmpty/assertNotEmpty'

Reports the assertTrue / assertFalse usages that can be replaced with assertEmpty / assertNotEmpty in PHPUnit tests.

See assertEmpty (phpunit.readthedocs.io) for details.

In the following example, asserting whether the $arr array is empty is initially performed by providing the empty() and count() functions calls as the conditions for the assertTrue method. After the quick-fix is applied, the more specific assertEmpty and assertNotEmpty are used directly on the $arr array.

class Test extends \PHPUnit\Framework\TestCase {

    public function doTestTrue() {

        $arr = ["a", "b", "c"];

        $this->assertTrue(empty($arr));

        $this->assertTrue(count($arr) <= 0);

        $this->assertTrue(count($arr) != 0);
    }
}

class Test extends \PHPUnit\Framework\TestCase {

    public function doTestTrue() {

        $arr = ["a", "b", "c"];

        $this->assertEmpty($arr);

        $this->assertEmpty($arr);

        $this->assertNotEmpty($arr);
    }
}

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Last modified: 16 May 2022