Nyholm / psr7

        $this->assertEquals('zoobar, foobar, zoobar', $r->getHeaderLine('zoo'));

    }

    public function testSupportNumericHeaders()

    {

        $r = new Request('GET', '', [

            'Content-Length' => 200,

        ]);

        $this->assertSame(['Content-Length' => ['200']], $r->getHeaders());

        $this->assertSame('200', $r->getHeaderLine('Content-Length'));

    }

    public function testAddsPortToHeader()

    {

        $this->assertSame('Created', $r2->getReasonPhrase());

    }

    public function testCanConstructWithHeaders()

    {

        $r = new Response(200, ['Foo' => 'Bar']);

        $this->assertSame(['Foo' => ['Bar']], $r->getHeaders());

        $this->assertSame('Bar', $r->getHeaderLine('Foo'));

        $this->assertSame(['Bar'], $r->getHeader('Foo'));

    }

    public function testCanConstructWithHeadersAsArray()

    {