Add unit tests for Playvideos plugin

+ coding style

tests/plugins/PluginPlayvideosTest.php

@@ -0,0 +1,61 @@
+<?php
+
+/**
+ * PluginPlayvideosTest.php
+ */
+
+require_once 'plugins/playvideos/playvideos.php';
+require_once 'application/Router.php';
+
+/**
+ * Class PluginPlayvideosTest
+ * Unit test for the PlayVideos plugin
+ */
+class PluginPlayvideosTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Reset plugin path
+     */
+    function setUp()
+    {
+        PluginManager::$PLUGINS_PATH = 'plugins';
+    }
+
+    /**
+     * Test render_linklist hook.
+     */
+    function testPlayvideosHeader()
+    {
+        $str = 'stuff';
+        $data = array($str => $str);
+        $data['_PAGE_'] = Router::$PAGE_LINKLIST;
+
+        $data = hook_playvideos_render_header($data);
+        $this->assertEquals($str, $data[$str]);
+        $this->assertEquals(1, count($data['buttons_toolbar']));
+
+        $data = array($str => $str);
+        $data['_PAGE_'] = $str;
+        $this->assertEquals($str, $data[$str]);
+        $this->assertArrayNotHasKey('buttons_toolbar', $data);
+    }
+
+    /**
+     * Test render_footer hook.
+     */
+    function testPlayvideosFooter()
+    {
+        $str = 'stuff';
+        $data = array($str => $str);
+        $data['_PAGE_'] = Router::$PAGE_LINKLIST;
+
+        $data = hook_playvideos_render_footer($data);
+        $this->assertEquals($str, $data[$str]);
+        $this->assertEquals(2, count($data['js_files']));
+
+        $data = array($str => $str);
+        $data['_PAGE_'] = $str;
+        $this->assertEquals($str, $data[$str]);
+        $this->assertArrayNotHasKey('js_files', $data);
+    }
+}