add pipe

tests/Feature/MethodTest.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: x
+ * Date: 2018/12/10
+ * Time: 1:14 AM
+ */
+
+namespace Tests\Feature;
+
+
+use QL\QueryList;
+use Tests\TestCaseBase;
+
+class MethodTest extends TestCaseBase
+{
+    protected $html;
+
+    public function setUp()
+    {
+        $this->html = $this->getSnippet('snippet-1');
+    }
+
+    /**
+     * @test
+     */
+    public function pipe()
+    {
+        $html = $this->html;
+        $qlHtml = QueryList::pipe(function(QueryList $ql) use($html){
+            $ql->setHtml($html);
+            return $ql;
+        })->getHtml();
+        $this->assertEquals($html,$qlHtml);
+    }
+}