diff --git a/composer.json b/composer.json
index 8afd19e..d85874f 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,8 @@
     "require-dev": {
         "phpunit/phpunit": "~5.0",
         "mockery/mockery": "~0.9",
-        "phpunit/php-code-coverage": "^4.0"
+        "phpunit/php-code-coverage": "^4.0",
+        "symfony/var-dumper": "^3.1"
     },
     "autoload": {
         "psr-4": {
@@ -25,6 +26,9 @@
     "autoload-dev": {
         "classmap": [
             "tests/TestCase.php"
+        ],
+        "files": [
+            "tests/helpers.php"
         ]
     },
     "minimum-stability": "dev",
diff --git a/tests/helpers.php b/tests/helpers.php
new file mode 100644
index 0000000..23405e8
--- /dev/null
+++ b/tests/helpers.php
@@ -0,0 +1,13 @@
+<?php
+
+if (!function_exists('dd')) {
+    /**
+     * @param array ...$args
+     */
+    function dd(...$args)
+    {
+        call_user_func_array('dump', $args);
+
+        die();
+    }
+}
\ No newline at end of file