PHPUnit_Framework_Assert::assertFalse PHP Method

    public static function assertFalse($condition, $message = '')
    {
        static::assertThat($condition, static::isFalse(), $message);
    }

 public function testIsValidAssetName()
 {
     PHPUnit::assertTrue(Validator::isValidAssetName('MYTOKEN'));
     PHPUnit::assertTrue(Validator::isValidAssetName('A95428956661682202'));
     PHPUnit::assertFalse(Validator::isValidAssetName('ABADTOKEN'));
     PHPUnit::assertTrue(Validator::isValidAssetNames(['MYTOKEN', 'MYTOKENTWO']));
 }