Unit test: Simulate a timeout with Guzzle 5 - php

Question

I am using Guzzle 5.3 and want to test that my client throws a TimeOutException.
Then, how can I do a mock of Guzzle Client that throw a GuzzleHttp\Exception\ConnectException?
Code to test.
public function request($namedRoute, $data = [])
{
try {
/** #noinspection PhpVoidFunctionResultUsedInspection */
/** #var \GuzzleHttp\Message\ResponseInterface $response */
$response = $this->httpClient->post($path, ['body' => $requestData]);
} catch (ConnectException $e) {
throw new \Vendor\Client\TimeOutException();
}
}
Update:
The right question was: how to throw a Exception with Guzzle 5? or, how to test a catch block with Guzzle 5?

Answer 1

You can test code inside a catch block with help of the addException method in the GuzzleHttp\Subscriber\Mock object.
This is the full test:
/**
* #expectedException \Vendor\Client\Exceptions\TimeOutException
*/
public function testTimeOut()
{
$mock = new \GuzzleHttp\Subscriber\Mock();
$mock->addException(
new \GuzzleHttp\Exception\ConnectException(
'Time Out',
new \GuzzleHttp\Message\Request('post', '/')
)
);
$this->httpClient
->getEmitter()
->attach($mock);
$this->client = new Client($this->config, $this->routing, $this->httpClient);
$this->client->request('any_route');
}
In the unit test, I add the GuzzleHttp\Exception\ConnectException to the mock. After, I add the mock to the emitter and, finally, I call the method I want test, request.
Reference:
Source Code
Mockito test a void method throws an exception