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Rev Author Line No. Line
87 office 1 <?php
2  
3 namespace GuzzleHttp\Subscriber;
4  
5 use GuzzleHttp\Adapter\Transaction;
6 use GuzzleHttp\Event\BeforeEvent;
7 use GuzzleHttp\Event\HeadersEvent;
8 use GuzzleHttp\Event\RequestEvents;
9 use GuzzleHttp\Event\SubscriberInterface;
10 use GuzzleHttp\Exception\RequestException;
11 use GuzzleHttp\Message\MessageFactory;
12 use GuzzleHttp\Message\ResponseInterface;
13  
14 /**
15 * Queues mock responses or exceptions and delivers mock responses or
16 * exceptions in a fifo order.
17 */
18 class Mock implements SubscriberInterface, \Countable
19 {
20 /** @var array Array of mock responses / exceptions */
21 private $queue = [];
22  
23 /** @var bool Whether or not to consume an entity body when mocking */
24 private $readBodies;
25  
26 /** @var MessageFactory */
27 private $factory;
28  
29 /**
30 * @param array $items Array of responses or exceptions to queue
31 * @param bool $readBodies Set to false to not consume the entity body of
32 * a request when a mock is served.
33 */
34 public function __construct(array $items = [], $readBodies = true)
35 {
36 $this->factory = new MessageFactory();
37 $this->readBodies = $readBodies;
38 $this->addMultiple($items);
39 }
40  
41 public function getEvents()
42 {
43 // Fire the event last, after signing
44 return ['before' => ['onBefore', RequestEvents::SIGN_REQUEST - 10]];
45 }
46  
47 /**
48 * @throws \OutOfBoundsException|\Exception
49 */
50 public function onBefore(BeforeEvent $event)
51 {
52 if (!$item = array_shift($this->queue)) {
53 throw new \OutOfBoundsException('Mock queue is empty');
54 } elseif ($item instanceof RequestException) {
55 throw $item;
56 }
57  
58 // Emulate the receiving of the response headers
59 $request = $event->getRequest();
60 $transaction = new Transaction($event->getClient(), $request);
61 $transaction->setResponse($item);
62 $request->getEmitter()->emit(
63 'headers',
64 new HeadersEvent($transaction)
65 );
66  
67 // Emulate reading a response body
68 if ($this->readBodies && $request->getBody()) {
69 while (!$request->getBody()->eof()) {
70 $request->getBody()->read(8096);
71 }
72 }
73  
74 $event->intercept($item);
75 }
76  
77 public function count()
78 {
79 return count($this->queue);
80 }
81  
82 /**
83 * Add a response to the end of the queue
84 *
85 * @param string|ResponseInterface $response Response or path to response file
86 *
87 * @return self
88 * @throws \InvalidArgumentException if a string or Response is not passed
89 */
90 public function addResponse($response)
91 {
92 if (is_string($response)) {
93 $response = file_exists($response)
94 ? $this->factory->fromMessage(file_get_contents($response))
95 : $this->factory->fromMessage($response);
96 } elseif (!($response instanceof ResponseInterface)) {
97 throw new \InvalidArgumentException('Response must a message '
98 . 'string, response object, or path to a file');
99 }
100  
101 $this->queue[] = $response;
102  
103 return $this;
104 }
105  
106 /**
107 * Add an exception to the end of the queue
108 *
109 * @param RequestException $e Exception to throw when the request is executed
110 *
111 * @return self
112 */
113 public function addException(RequestException $e)
114 {
115 $this->queue[] = $e;
116  
117 return $this;
118 }
119  
120 /**
121 * Add multiple items to the queue
122 *
123 * @param array $items Items to add
124 */
125 public function addMultiple(array $items)
126 {
127 foreach ($items as $item) {
128 if ($item instanceof RequestException) {
129 $this->addException($item);
130 } else {
131 $this->addResponse($item);
132 }
133 }
134 }
135  
136 /**
137 * Clear the queue
138 */
139 public function clearQueue()
140 {
141 $this->queue = [];
142 }
143 }