Merge branch '6.4' into 7.0

* 6.4:
  [Scheduler] Fix changelog
  [FrameworkBundle][Test]: add token attributes in `KernelBrowser::loginUser()`
  Fix stateful scheduler
  [Scheduler] Speed up tests
  [HttpClient] Enable using EventSourceHttpClient::connect() for both GET and POST
  [Serializer] Allow Context to target classes
  [Validator] Add is_valid function to Expression constraint
  Fix Form profiler toggles
  [FrameworkBundle] Fix missing PhraseProviderFactory import
  [Security] Fixing deprecation message

Author: fabpot

CHANGELOG.md

@@ -12,6 +12,7 @@ CHANGELOG
  * Add `HarFileResponseFactory` testing utility, allow to replay responses from `.har` files
  * Add `max_retries` option to `RetryableHttpClient` to adjust the retry logic on a per request level
  * Add `PingWehookMessage` and `PingWebhookMessageHandler`
+ * Enable using EventSourceHttpClient::connect() for both GET and POST
 
 6.3
 ---

EventSourceHttpClient.php

@@ -39,9 +39,9 @@ public function __construct(HttpClientInterface $client = null, float $reconnect
         $this->reconnectionTime = $reconnectionTime;
     }
 
-    public function connect(string $url, array $options = []): ResponseInterface
+    public function connect(string $url, array $options = [], string $method = 'GET'): ResponseInterface
     {
-        return $this->request('GET', $url, self::mergeDefaultOptions($options, [
+        return $this->request($method, $url, self::mergeDefaultOptions($options, [
             'buffer' => false,
             'headers' => [
                 'Accept' => 'text/event-stream',

Tests/EventSourceHttpClientTest.php

@@ -110,6 +110,33 @@ public function testGetServerSentEvents()
         }
     }
 
+    public function testPostServerSentEvents()
+    {
+        $chunk = new DataChunk(0, '');
+        $response = new MockResponse('', ['canceled' => false, 'http_method' => 'POST', 'url' => 'http://localhost:8080/events', 'response_headers' => ['content-type: text/event-stream']]);
+        $responseStream = new ResponseStream((function () use ($response, $chunk) {
+            yield $response => new FirstChunk();
+            yield $response => $chunk;
+            yield $response => new ErrorChunk(0, 'timeout');
+        })());
+
+        $hasCorrectHeaders = function ($options) {
+            $this->assertSame(['Accept: text/event-stream', 'Cache-Control: no-cache'], $options['headers']);
+            $this->assertSame('mybody', $options['body']);
+
+            return true;
+        };
+
+        $httpClient = $this->createMock(HttpClientInterface::class);
+
+        $httpClient->method('request')->with('POST', 'http://localhost:8080/events', $this->callback($hasCorrectHeaders))->willReturn($response);
+
+        $httpClient->method('stream')->willReturn($responseStream);
+
+        $es = new EventSourceHttpClient($httpClient);
+        $res = $es->connect('http://localhost:8080/events', ['body' => 'mybody'], 'POST');
+    }
+
     /**
      * @dataProvider contentTypeProvider
      */