minor symfony#9518 [BrowserKit] Documented the new xmlHttpRequest() method (javiereguiluz)

This PR was merged into the master branch.

Discussion
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[BrowserKit] Documented the new xmlHttpRequest() method

This fixes symfony#9381.

Commits
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5f57f40 Documented the new xmlHttpRequest() method

Author: javiereguiluz

components/browser_kit.rst

@@ -75,6 +75,19 @@ The value returned by the ``request()`` method is an instance of the
 :doc:`DomCrawler component </components/dom_crawler>`, which allows accessing
 and traversing HTML elements programmatically.
 
+The :method:`Symfony\\Component\\BrowserKit\\Client::xmlHttpRequest` method,
+which defines the same arguments as the ``request()`` method, is a shortcut to
+make AJAX requests::
+
+    use Acme\Client;
+
+    $client = new Client();
+    // the required HTTP_X_REQUESTED_WITH header is added automatically
+    $crawler = $client->xmlHttpRequest('GET', '/');
+
+.. versionadded:: 4.1
+    The ``xmlHttpRequest()`` method was introduced in Symfony 4.1.
+
 Clicking Links
 ~~~~~~~~~~~~~~
 

testing.rst

@@ -359,8 +359,8 @@ returns a ``Crawler`` instance.
         )
 
     The ``server`` array is the raw values that you'd expect to normally
-    find in the PHP `$_SERVER`_ superglobal. For example, to set the ``Content-Type``,
-    ``Referer`` and ``X-Requested-With`` HTTP headers, you'd pass the following (mind
+    find in the PHP `$_SERVER`_ superglobal. For example, to set the
+    ``Content-Type`` and ``Referer`` HTTP headers, you'd pass the following (mind
     the ``HTTP_`` prefix for non standard headers)::
 
         $client->request(
@@ -369,9 +369,8 @@ returns a ``Crawler`` instance.
             array(),
             array(),
             array(
-                'CONTENT_TYPE'          => 'application/json',
-                'HTTP_REFERER'          => '/foo/bar',
-                'HTTP_X-Requested-With' => 'XMLHttpRequest',
+                'CONTENT_TYPE' => 'application/json',
+                'HTTP_REFERER' => '/foo/bar',
             )
         );
 
@@ -441,6 +440,19 @@ script::
 
     $client->insulate();
 
+AJAX Requests
+~~~~~~~~~~~~~
+
+The Client provides a :method:`Symfony\\Component\\BrowserKit\\Client::xmlHttpRequest`
+method, which has the same arguments as the ``request()`` method, and it's a
+shortcut to make AJAX requests::
+
+    // the required HTTP_X_REQUESTED_WITH header is added automatically
+    $client->xmlHttpRequest('POST', '/submit', array('name' => 'Fabien'));
+
+.. versionadded:: 4.1
+    The ``xmlHttpRequest()`` method was introduced in Symfony 4.1.
+
 Browsing
 ~~~~~~~~