Add integration for symfony HttpFoundation component

Author: estahn

composer.json

@@ -19,7 +19,8 @@
     },
     "require-dev": {
         "phpunit/phpunit": "~4.8|~5.2",
-        "codacy/coverage": "dev-master"
+        "codacy/coverage": "dev-master",
+        "symfony/http-foundation": "^3.0"
     },
     "autoload": {
         "psr-4": {

src/Integration/Symfony.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace EnricoStahn\JsonAssert\Integration;
+
+use EnricoStahn\JsonAssert\Assert;
+use Symfony\Component\HttpFoundation\Response;
+
+trait Symfony
+{
+    /**
+     * Asserts that json content is valid according to the provided schema file.
+     *
+     * Example:
+     *
+     *   static::assertJsonMatchesSchema(json_decode('{"foo":1}'), './schema.json')
+     *
+     * @param string   $schema   Path to the schema file
+     * @param Response $response JSON array or object
+     */
+    public static function assertJsonMatchesSchema($schema, Response $response)
+    {
+        Assert::assertJsonMatchesSchema($schema, json_decode($response->getContent()));
+    }
+
+    /**
+     * Asserts that json content is valid according to the provided schema string.
+     *
+     * @param string   $schema   Schema data
+     * @param Response $response JSON content
+     */
+    public static function assertJsonMatchesSchemaString($schema, Response $response)
+    {
+        Assert::assertJsonMatchesSchemaString($schema, json_decode($response->getContent()));
+    }
+
+    /**
+     * Asserts if the value retrieved with the expression equals the expected value.
+     *
+     * Example:
+     *
+     *     static::assertJsonValueEquals(33, 'foo.bar[0]', $json);
+     *
+     * @param mixed    $expected   Expected value
+     * @param string   $expression Expression to retrieve the result
+     *                             (e.g. locations[?state == 'WA'].name | sort(@))
+     * @param Response $response   JSON Content
+     */
+    public static function assertJsonValueEquals($expected, $expression, $response)
+    {
+        Assert::assertJsonValueEquals($expected, $expression, json_decode($response->getContent()));
+    }
+}