FilterTest::testBoolFilter PHP Method

    public function testBoolFilter()
    {
        $filter = (new GeneralFilterContainer())->addFilter('test1', new BoolFilter())->addFilter('test2', new BoolFilter());
        if (!$filter instanceof GeneralFilterContainer) {
            $this->fail('Type error');
        }
        $before = ['test1' => 1, 'test2' => 0];
        $after = $filter($before);
        $this->assertSame(['test1' => true, 'test2' => false], $after);
        try {
            $typeError = ['test1' => true, 'test2' => []];
            $filter($typeError);
            $this->fail('Expected a TypeError');
        } catch (\TypeError $ex) {
        }
    }