feature #24778 [BrowserKit] add a way to switch to ajax for one reque…

…st (Simperfit)

This PR was merged into the 4.1-dev branch.

Discussion
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[BrowserKit] add a way to switch to ajax for one request

| Q             | A
| ------------- | ---
| Branch?       | 4.1
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #20306
| License       | MIT
| Doc PR        | will do

Follow the work on #20306.

/cc @fabpot is it the right implementation ?

Commits
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a10eae7 [BrowserKit] add a way to switch to ajax for one request

src/Symfony/Component/BrowserKit/Client.php

@@ -150,6 +150,16 @@ public function getServerParameter($key, $default = '')
         return isset($this->server[$key]) ? $this->server[$key] : $default;
     }
 
+    public function switchToXHR()
+    {
+        $this->setServerParameter('HTTP_X_REQUESTED_WITH', 'XMLHttpRequest');
+    }
+
+    public function removeXHR()
+    {
+        unset($this->server['HTTP_X_REQUESTED_WITH']);
+    }
+
     /**
      * Returns the History instance.
      *

src/Symfony/Component/BrowserKit/Tests/ClientTest.php

@@ -94,6 +94,16 @@ public function testGetRequest()
         $this->assertEquals('http://example.com/', $client->getRequest()->getUri(), '->getCrawler() returns the Request of the last request');
     }
 
+    public function testGetRequestWithXHR()
+    {
+        $client = new TestClient();
+        $client->switchToXHR();
+        $client->request('GET', 'http://example.com/', array(), array(), array(), null, true, true);
+        $this->assertEquals($client->getRequest()->getServer()['HTTP_X_REQUESTED_WITH'], 'XMLHttpRequest');
+        $client->removeXHR();
+        $this->assertFalse($client->getServerParameter('HTTP_X_REQUESTED_WITH', false));
+    }
+
     public function testGetRequestWithIpAsHttpHost()
     {
         $client = new TestClient();