Write test for Link tag

src/DocBlock/Tags/Link.php

@@ -15,17 +15,28 @@ namespace phpDocumentor\Reflection\DocBlock\Tags;
 use phpDocumentor\Reflection\DocBlock\Description;
 use phpDocumentor\Reflection\DocBlock\DescriptionFactory;
 use phpDocumentor\Reflection\Types\Context;
+use Webmozart\Assert\Assert;
 
 /**
  * Reflection class for a @link tag in a Docblock.
  */
 final class Link extends BaseTag
 {
+    protected $name = 'link';
+
     /** @var string */
     private $link = '';
 
-    public function __construct($link, Description $description)
+    /**
+     * Initializes a link to a URL.
+     *
+     * @param string      $link
+     * @param Description $description
+     */
+    public function __construct($link, Description $description = null)
     {
+        Assert::string($link);
+
         $this->link = $link;
         $this->description = $description;
     }
@@ -35,10 +46,12 @@ final class Link extends BaseTag
      */
     public static function create($body, DescriptionFactory $descriptionFactory = null, Context $context = null)
     {
+        Assert::string($body);
+
         $parts = preg_split('/\s+/Su', $body, 2);
 
         $link = $parts[0];
-        $description = $descriptionFactory->create(isset($parts[1]) ? $parts[1] : '', $context);
+        $description = isset($parts[1]) ? $descriptionFactory->create($parts[1], $context) : null;
 
         return new static($link, $description);
     }
@@ -53,8 +66,13 @@ final class Link extends BaseTag
         return $this->link;
     }
 
+    /**
+     * Returns a string representation for this tag.
+     *
+     * @return string
+     */
     public function __toString()
     {
-        return $this->link . ' ' . $this->description;
+        return $this->link . ($this->description ? ' ' . $this->description->render() : '');
     }
 }

tests/unit/DocBlock/Tags/LinkTest.php

@@ -0,0 +1,157 @@
+<?php
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @copyright 2010-2015 Mike van Riel<[email protected]>
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\DocBlock\Tags;
+
+use Mockery as m;
+use phpDocumentor\Reflection\DocBlock\Description;
+use phpDocumentor\Reflection\DocBlock\DescriptionFactory;
+use phpDocumentor\Reflection\Types\Context;
+
+/**
+ * @coversDefaultClass \phpDocumentor\Reflection\DocBlock\Tags\Link
+ * @covers ::<private>
+ */
+class LinkTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @uses   \phpDocumentor\Reflection\DocBlock\Tags\Link::__construct
+     * @uses   \phpDocumentor\Reflection\DocBlock\Description
+     * @covers \phpDocumentor\Reflection\DocBlock\Tags\BaseTag::getName
+     */
+    public function testIfCorrectTagNameIsReturned()
+    {
+        $fixture = new Link('http://this.is.my/link', new Description('Description'));
+
+        $this->assertSame('link', $fixture->getName());
+    }
+
+    /**
+     * @uses   \phpDocumentor\Reflection\DocBlock\Tags\Link::__construct
+     * @uses   \phpDocumentor\Reflection\DocBlock\Tags\Link::__toString
+     * @uses   \phpDocumentor\Reflection\DocBlock\Tags\Formatter\PassthroughFormatter
+     * @uses   \phpDocumentor\Reflection\DocBlock\Description
+     * @covers \phpDocumentor\Reflection\DocBlock\Tags\BaseTag::render
+     */
+    public function testIfTagCanBeRenderedUsingDefaultFormatter()
+    {
+        $fixture = new Link('http://this.is.my/link', new Description('Description'));
+
+        $this->assertSame('http://this.is.my/link Description', $fixture->render());
+    }
+
+    /**
+     * @uses   \phpDocumentor\Reflection\DocBlock\Tags\Link::__construct
+     * @uses   \phpDocumentor\Reflection\DocBlock\Description
+     * @covers \phpDocumentor\Reflection\DocBlock\Tags\BaseTag::render
+     */
+    public function testIfTagCanBeRenderedUsingSpecificFormatter()
+    {
+        $fixture = new Link('http://this.is.my/link', new Description('Description'));
+
+        $formatter = m::mock(Formatter::class);
+        $formatter->shouldReceive('format')->with($fixture)->andReturn('Rendered output');
+
+        $this->assertSame('Rendered output', $fixture->render($formatter));
+    }
+
+    /**
+     * @covers ::__construct
+     * @covers ::getLink
+     */
+    public function testHasLinkUrl()
+    {
+        $expected = 'http://this.is.my/link';
+
+        $fixture = new Link($expected);
+
+        $this->assertSame($expected, $fixture->getLink());
+    }
+
+    /**
+     * @covers ::__construct
+     * @covers \phpDocumentor\Reflection\DocBlock\Tags\BaseTag::getDescription
+     * @uses   \phpDocumentor\Reflection\DocBlock\Description
+     */
+    public function testHasDescription()
+    {
+        $expected = new Description('Description');
+
+        $fixture = new Link('http://this.is.my/link', $expected);
+
+        $this->assertSame($expected, $fixture->getDescription());
+    }
+
+    /**
+     * @covers ::__construct
+     * @covers ::__toString
+     * @uses   \phpDocumentor\Reflection\DocBlock\Description
+     */
+    public function testStringRepresentationIsReturned()
+    {
+        $fixture = new Link('http://this.is.my/link', new Description('Description'));
+
+        $this->assertSame('http://this.is.my/link Description', (string)$fixture);
+    }
+
+    /**
+     * @covers ::create
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\Link::<public>
+     * @uses \phpDocumentor\Reflection\DocBlock\DescriptionFactory
+     * @uses \phpDocumentor\Reflection\DocBlock\Description
+     * @uses \phpDocumentor\Reflection\Types\Context
+     */
+    public function testFactoryMethod()
+    {
+        $descriptionFactory = m::mock(DescriptionFactory::class);
+        $context = new Context('');
+
+        $links = 'http://this.is.my/link';
+        $description = new Description('My Description');
+
+        $descriptionFactory->shouldReceive('create')->with('My Description', $context)->andReturn($description);
+
+        $fixture = Link::create('http://this.is.my/link My Description', $descriptionFactory, $context);
+
+        $this->assertSame('http://this.is.my/link My Description', (string)$fixture);
+        $this->assertSame($links, $fixture->getLink());
+        $this->assertSame($description, $fixture->getDescription());
+    }
+
+    /**
+     * @covers ::create
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\Link::<public>
+     * @uses \phpDocumentor\Reflection\DocBlock\DescriptionFactory
+     * @uses \phpDocumentor\Reflection\DocBlock\Description
+     * @uses \phpDocumentor\Reflection\Types\Context
+     */
+    public function testFactoryMethodCreatesEmptyLinkTag()
+    {
+        $descriptionFactory = m::mock(DescriptionFactory::class);
+        $descriptionFactory->shouldReceive('create')->never();
+
+        $fixture = Link::create('', $descriptionFactory, new Context(''));
+
+        $this->assertSame('', (string)$fixture);
+        $this->assertSame('', $fixture->getLink());
+        $this->assertSame(null, $fixture->getDescription());
+    }
+
+    /**
+     * @covers ::create
+     * @expectedException \InvalidArgumentException
+     */
+    public function testFactoryMethodFailsIfVersionIsNotString()
+    {
+        $this->assertNull(Link::create([]));
+    }
+}