More tests.

app/Helpers/Help/HelpInterface.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace FireflyIII\Helpers\Help;
+
+/**
+ * Interface HelpInterface
+ *
+ * @package FireflyIII\Helpers\Help
+ */
+interface HelpInterface
+{
+
+    /**
+     * @param $key
+     *
+     * @return string
+     */
+    public function getFromCache($key);
+
+    /**
+     * @return boolean
+     */
+    public function hasRoute($route);
+
+    /**
+     * @param $route
+     *
+     * @return array
+     */
+    public function getFromGithub($route);
+
+    /**
+     * @param       $route
+     * @param array $content
+     *
+     * @return void
+     */
+    public function putInCache($route, array $content);
+
+    /**
+     * @param $route
+     *
+     * @return bool
+     */
+    public function inCache($route);
+}