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<?php
/**
* Copyright 2014 Klarna AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* File containing the ResponseValidator class.
*/
namespace Klarna\Rest\Transport;
use GuzzleHttp\Message\ResponseInterface;
/**
* HTTP response validator helper class.
*/
class ResponseValidator
{
/**
* HTTP response to validate against.
*
* @var ResponseInterface
*/
protected $response;
/**
* Constructs a response validator instance.
*
* @param ResponseInterface $response Response to validate
*/
public function __construct(ResponseInterface $response)
{
$this->response = $response;
}
/**
* Gets the response object.
*
* @return ResponseInterface
*/
public function getResponse()
{
return $this->response;
}
/**
* Asserts the HTTP response status code.
*
* @param string|string[] $status Expected status code(s)
*
* @throws \RuntimeException If status code does not match
*
* @return self
*/
public function status($status)
{
$httpStatus = (string) $this->response->getStatusCode();
if (is_array($status) && !in_array($httpStatus, $status)) {
throw new \RuntimeException(
"Unexpected response status code: {$httpStatus}"
);
}
if (is_string($status) && $httpStatus !== $status) {
throw new \RuntimeException(
"Unexpected response status code: {$httpStatus}"
);
}
return $this;
}
/**
* Asserts the Content-Type header.
*
* @param string $mediaType Expected media type
*
* @throws \RuntimeException If Content-Type header is missing
* @throws \RuntimeException If Content-Type header does not match
*
* @return self
*/
public function contentType($mediaType)
{
if (!$this->response->hasHeader('Content-Type')) {
throw new \RuntimeException('Response is missing a Content-Type header');
}
$contentType = $this->response->getHeader('Content-Type');
if ($contentType !== $mediaType) {
throw new \RuntimeException(
"Unexpected Content-Type header received: {$contentType}"
);
}
return $this;
}
/**
* Get the decoded JSON response.
*
* @throws \RuntimeException If the response body is not in JSON format
* @throws \InvalidArgumentException If the JSON cannot be parsed
*
* @return array
*/
public function getJson()
{
return $this->response->json();
}
/**
* Gets the Location header.
*
* @throws \RuntimeException If the Location header is missing
*
* @return string
*/
public function getLocation()
{
if (!$this->response->hasHeader('Location')) {
throw new \RuntimeException('Response is missing a Location header');
}
return $this->response->getHeader('Location');
}
}