Add tests and more details in README

Author: estahn

README.md

@@ -37,11 +37,13 @@ or in your `composer.json`:
 
 ## Asserts
 
-| Assert                        | Description                                                                  |
-| ----------------------------- | ---------------------------------------------------------------------------- |
-| assertJsonMatchesSchema       | Asserts that json content is valid according to the provided schema file     |
-| assertJsonMatchesSchemaString | Asserts that json content is valid according to the provided schema string   |
-| assertJsonValueEquals         | Asserts if the value retrieved with the expression equals the expected value |
+| Assert                        | Description                                                                  | Available in |
+| ----------------------------- | ---------------------------------------------------------------------------- | ------------ |
+| assertJsonMatchesSchema       | Asserts that json content is valid according to the provided schema file     | All |
+| assertJsonMatchesSchemaString | Asserts that json content is valid according to the provided schema string   | All |
+| assertJsonValueEquals         | Asserts if the value retrieved with the expression equals the expected value | All |
+| assertJsonValueEquals         | Asserts if the value retrieved with the expression equals the expected value | All |
+| assertJsonResponse            | Asserts that a response is successful and of type json | Symfony |
 
 ## Usage
 

tests/Extension/SymfonyTest.php

@@ -39,4 +39,11 @@ public function testAssertJsonValueEquals()
 
         Symfony::assertJsonValueEquals(123, 'foo', $response);
     }
+
+    public function testAssertJsonResponse()
+    {
+        $response = new Response('{}', 200, ['Content-Type' => 'application/json']);
+        
+        Symfony::assertJsonResponse($response);
+    }
 }