MAGETWO-70866: Enabling the use of looping (for in ..) into Template.php #9401

 - Merge Pull Request #9401 from thiagolima-bm/magento2:develop
 - Merged commits:
   1. 7717a56
   2. 3026960
   3. 18ed2eb
   4. e77cedf
   5. 6da53be
   6. a69e9cd
   7. 104e664
   8. 28e9d61
   9. 9111eb5
   10. 37f49b7
   11. 28ec3f8
   12. 8fd5123

Author: Oleksii Korshenko

dev/tests/integration/testsuite/Magento/Framework/Filter/TemplateTest.php

@@ -0,0 +1,151 @@
+<?php
+/**
+ * Copyright © 2013-2017 Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Framework\Filter;
+
+/**
+ * Class TemplateTest
+ * @package Magento\Framework\Filter
+ */
+class TemplateTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @var \Magento\Framework\Filter\Template
+     */
+    private $templateFilter;
+
+    protected function setUp()
+    {
+        $objectManager = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
+        $this->templateFilter = $objectManager->getObject('Magento\Framework\Filter\Template');
+    }
+
+    /**
+     * @param array $results
+     * @param array $values
+     * @dataProvider getFilterForDataProvider
+     */
+    public function testFilterFor($results, $values)
+    {
+
+        $this->templateFilter->setVariables(array('order' => $this->getOrder(), 'things' => $this->getThings()));
+        $this->assertEquals($results, $this->invokeMethod($this->templateFilter, 'filterFor', [$values]));
+
+    }
+
+    /**
+     * @return \Magento\Framework\DataObject
+     */
+    private function getOrder()
+    {
+        $order = new \Magento\Framework\DataObject();
+
+        $visibleItems = [
+            [
+                'sku' => 'ABC123',
+                'name' => 'Product ABC',
+                'price' => '123',
+                'ordered_qty' => '2'
+            ]
+        ];
+
+        $order->setAllVisibleItems($visibleItems);
+        return $order;
+
+    }
+
+    public function getThings()
+    {
+        return [
+            ['name' => 'Richard', 'age' => 24],
+            ['name' => 'Jane', 'age' => 12],
+            ['name' => 'Spot', 'age' => 7],
+        ];
+
+    }
+
+    /**
+     * @return array
+     */
+    public function getFilterForDataProvider()
+    {
+        $template = <<<TEMPLATE
+<ul>
+{{for thing in things}}
+    <li>
+        {{var loop.index}} name: {{var thing.name}}, lastname: {{var thing.lastname}}, age: {{var thing.age}}
+    </li>
+{{/for}}
+</ul>
+TEMPLATE;
+
+        $expectedResult = <<<EXPECTED_RESULT
+<ul>
+
+    <li>
+        0 name: Richard, lastname: , age: 24
+    </li>
+
+    <li>
+        1 name: Jane, lastname: , age: 12
+    </li>
+
+    <li>
+        2 name: Spot, lastname: , age: 7
+    </li>
+
+</ul>
+EXPECTED_RESULT;
+
+        $template2 = <<<TEMPLATE
+<ul>
+    {{for item in order.all_visible_items}}
+    <li>
+        index: {{var loop.index}} sku: {{var item.sku}} name: {{var item.name}} price: {{var item.price}} quantity: {{var item.ordered_qty}}
+    </li>
+    {{/for}}
+</ul>
+TEMPLATE;
+
+        $expectedResult2 = <<<EXPECTED_RESULT
+<ul>
+    
+    <li>
+        index: 0 sku: ABC123 name: Product ABC price: 123 quantity: 2
+    </li>
+    
+</ul>
+EXPECTED_RESULT;
+        return [
+            [
+                $expectedResult,
+                $template
+            ],
+            [
+                $expectedResult2,
+                $template2
+            ]
+        ];
+    }
+
+
+    /**
+     * Call protected/private method of a class.
+     *
+     * @param object &$object
+     * @param string $methodName
+     * @param array  $parameters
+     *
+     * @return mixed Method return.
+     */
+    private function invokeMethod(&$object, $methodName, array $parameters = [])
+    {
+        $reflection = new \ReflectionClass(get_class($object));
+        $method = $reflection->getMethod($methodName);
+        $method->setAccessible(true);
+
+        return $method->invokeArgs($object, $parameters);
+    }
+}