Nyholm / psr7

        $this->assertEquals('/', $r1->getRequestTarget());

    }

    public function testRequestTargetDoesNotAllowSpaces()

    {

        $this->expectException(\InvalidArgumentException::class);

        $this->expectExceptionMessage('Invalid request target provided; cannot contain whitespace');

        $r1 = new Request('GET', '/');

        $r1->withRequestTarget('/foo bar');

    }

    public function testRequestTargetDefaultsToSlash()

    {

        $this->assertEquals('foo.com:8125', $r->getHeaderLine('host'));

    }

    public function testCannotHaveHeaderWithEmptyName()

    {

        $this->expectException(\InvalidArgumentException::class);

        $this->expectExceptionMessage('Header name must be an RFC 7230 compatible string.');

        $r = new Request('GET', 'https://example.com/');

        $r = $r->withHeader('', 'Bar');

    }

    public function testCanHaveHeaderWithEmptyValue()

    {