created mocks for testing

tests/Webservice/MockRenderer.php

@@ -0,0 +1,16 @@
+<?php
+namespace BSR\Webservice;
+
+use BSR\Webservice\Formatter\Formatter;
+
+class MockRenderer extends Renderer
+{
+    /**
+     * Override to avoid sending headers and flushing buffers
+     */
+    public function render($status, $data)
+    {
+        $formatter = Formatter::getFormatter();
+        $formatter->render($data);
+    }
+}