Add tests for Url handler

tests/Handler/Literal/UrlTest.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace Netgen\Bundle\OpenGraphBundle\Tests\Handler\Literal;
+
+use Netgen\Bundle\OpenGraphBundle\Handler\HandlerInterface;
+use Netgen\Bundle\OpenGraphBundle\Handler\Literal\Url;
+use Netgen\Bundle\OpenGraphBundle\MetaTag\Item;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+class UrlTest extends TestCase
+{
+    /**
+     * @var Url
+     */
+    protected $url;
+
+    /**
+     * @var \Symfony\Component\HttpFoundation\RequestStack
+     */
+    protected $requestStack;
+
+    public function setUp()
+    {
+        $this->requestStack = new RequestStack();
+        $this->url = new Url($this->requestStack);
+    }
+
+    public function testInstanceOfHandlerInterface()
+    {
+        $this->assertInstanceOf(HandlerInterface::class, $this->url);
+    }
+
+    /**
+     * @expectedException \eZ\Publish\Core\Base\Exceptions\InvalidArgumentException
+     * @expectedExceptionMessage Argument '$params[0]' is invalid: Literal URL handler requires the path to output.
+     */
+    public function testGettingTagsWithEmptyParams()
+    {
+        $this->url->getMetaTags('some_tag', array());
+    }
+
+    /**
+     * @dataProvider validResultProvider
+     *
+     * @param string $input
+     * @param string $output
+     */
+    public function testGettingTagsWithValidResult($input, $output)
+    {
+        $request = Request::create('https://domain.com');
+
+        $this->requestStack->push($request);
+
+        $result = $this->url->getMetaTags('some_tag', array($input));
+
+        $this->assertInternalType('array', $result);
+        $this->assertInstanceOf(Item::class, $result[0]);
+        $this->assertEquals('some_tag', $result[0]->getTagName());
+        $this->assertEquals($output, $result[0]->getTagValue());
+    }
+
+    public function validResultProvider()
+    {
+        return array(
+            array('https://other.domain.com/some/path', 'https://other.domain.com/some/path'),
+            array('http://other.domain.com/some/path', 'http://other.domain.com/some/path'),
+            array('/some/path', 'https://domain.com/some/path'),
+            array('some/path', 'https://domain.com/some/path'),
+            array('/', 'https://domain.com/'),
+            array('', 'https://domain.com/'),
+        );
+    }
+}