This PR was merged into the 4.3-dev branch.
Discussion
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[HttpClient] add MockHttpClient
| Q | A
| ------------- | ---
| Branch? | master
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | -
| License | MIT
| Doc PR | -
This PR introduces `MockHttpClient` and `MockResponse`, to be used for testing classes that need an HTTP client without making actual HTTP requests.
`MockHttpClient` is configured via its constructor: you provide it either with an iterable or a callable, and these will be used to provide responses as the consumer requests them.
Example:
```php
$responses = [
new MockResponse($body1, $info1),
new MockResponse($body2, $info2),
];
$client = new MockHttpClient($responses);
$response1 = $client->request(...); // created from $responses[0]
$response2 = $client->request(...); // created from $responses[1]
```
Or alternatively:
```php
$callback = function ($method, $url, $options) {
return new MockResponse(...);
};
$client = new MockHttpClient($callback);
$response = $client->request(...); // calls $callback internal
```
The responses provided to the client don't have to be instances of `MockResponse` - any `ResponseInterface` works (e.g. `$this->getMockBuilder(ResponseInterface::class)->getMock()`).
Using `MockResponse` allows simulating chunked responses and timeouts:
```php
$body = function () {
yield 'hello';
yield ''; // the empty string is turned into a timeout so that they are easy to test
yield 'world';
};
$mockResponse = new Mockresponse($body);
```
Last but not least, the implementation simulates the full lifecycle of a properly behaving `HttpClientInterface` contracts implementation: error handling, progress function, etc. This is "proved" by `MockHttpClientTest`, who implements and passes the reference test suite in `HttpClientTestCase`.
Commits
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8fd7584158 [HttpClient] add MockHttpClient
