Bluz\Tests\Response\ResponseTest::testAddHeaders PHP Method

    public function testAddHeaders()
    {
        $this->response->setHeaders(['foo' => ['bar']]);
        $this->response->addHeaders(['foo' => ['baz'], 'baz' => ['qux']]);
        $this->assertEquals(2, sizeof($this->response->getHeaders()));
        $this->assertArrayHasKeyAndSize($this->response->getHeaders(), 'foo', 2);
    }