public function testSetCustomHeaders()
{
$headers = array('Custom1', 'Custom2');
$signer = new RequestSigner();
$signer->setCustomHeaders(array('Custom1', 'Custom2'));
$request = new DummyRequest();
$request->headers = array('Custom1' => 'Value1', 'Custom2' => 'Value2', 'Custom3' => 'Value3');
$expected = array('Custom1' => 'Value1', 'Custom2' => 'Value2');
$this->assertEquals($expected, $signer->getCustomHeaders($request));
}
