public function testAddsMultipleHeaders()
{
$h = new Request('GET', 'http://foo.com');
$h->addHeaders(['foo' => ' bar', 'baz' => [' bam ', 'boo']]);
$this->assertEquals(['foo' => ['bar'], 'baz' => ['bam', 'boo'], 'Host' => ['foo.com']], $h->getHeaders());
}