adding tests & the clear method

Author: Tom Schlick

src/HttpPush.php

@@ -13,7 +13,7 @@ class HttpPush
     /**
      * @var array
      */
-    protected $resources = [];
+    public $resources = [];
 
     /**
      * Push a resource onto the queue for the middleware.
@@ -44,4 +44,12 @@ public function generateLinks() : array
 
         return $links;
     }
+
+    /**
+     * Clear all resources out of the queue.
+     */
+    public function clear()
+    {
+        $this->resources = [];
+    }
 }

tests/HttpPushTest.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace TomSchlick\ServerPush\Tests;
+
+use PHPUnit_Framework_TestCase;
+use TomSchlick\ServerPush\HttpPush;
+
+/**
+ * Class HttpPushTest
+ * @package TomSchlick\ServerPush\Tests
+ */
+class HttpPushTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var HttpPush
+     */
+    protected $instance;
+
+    public function setUp()
+    {
+        $this->instance = new HttpPush();
+    }
+
+    public function tearDown()
+    {
+        $this->instance->clear();
+        parent::tearDown();
+    }
+
+    public function test_add_resources_to_queue()
+    {
+        $this->instance->queueResource('style.css', 'style');
+
+        $expected = [
+            [
+                'path' => 'style.css',
+                'type' => 'style',
+            ]
+        ];
+        $this->assertEquals($expected, $this->instance->resources);
+    }
+
+    public function test_resource_generates_link_string()
+    {
+        $this->instance->queueResource('/assets/app.js.min', 'script');
+
+        $this->assertEquals("</assets/app.js.min>; rel=preload; as=script", $this->instance->generateLinks()[0]);
+    }
+
+    public function test_clear_resources()
+    {
+        $this->instance->queueResource('/assets/app.js.min', 'script');
+        $this->instance->queueResource('style.css', 'style');
+
+        $this->instance->clear();
+        $this->assertTrue(empty($this->instance->resources));
+    }
+
+}