Add unit test.

tests/unit/DocBlock/Tags/Formatter/AlignFormatterTest.php

@@ -0,0 +1,58 @@
+<?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.
+ *
+ * @author    Jan Schneider <[email protected]>
+ * @copyright 2017 Mike van Riel<[email protected]>
+ * @license   http://www.opensource.org/licenses/mit-license.php MIT
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\DocBlock\Tags\Formatter;
+
+use phpDocumentor\Reflection\DocBlock\Description;
+use phpDocumentor\Reflection\DocBlock\Tags\Link;
+use phpDocumentor\Reflection\DocBlock\Tags\Param;
+use phpDocumentor\Reflection\DocBlock\Tags\Version;
+use phpDocumentor\Reflection\Types\String_;
+
+/**
+ * @coversDefaultClass \phpDocumentor\Reflection\DocBlock\Tags\Formatter\AlignFormatter
+ */
+class PassthroughFormatterTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @covers ::format
+     * @uses \phpDocumentor\Reflection\DocBlock\Description
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\BaseTag
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\Link
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\Param
+     * @uses \phpDocumentor\Reflection\DocBlock\Tags\Version
+     * @uses \phpDocumentor\Reflection\Types\String_
+     */
+    public function testFormatterCallsToStringAndReturnsAStandardRepresentation()
+    {
+        $tags = array(
+            new Param('foobar', new String_()),
+            new Version('1.2.0'),
+            new Link('http://www.example.com', new Description('Examples'))
+        );
+        $fixture = new AlignFormatter($tags);
+
+        $expected = array(
+            '@param   string $foobar',
+            '@version 1.2.0',
+            '@link    http://www.example.com Examples'
+        );
+
+        foreach ($tags as $key => $tag) {
+            $this->assertSame(
+                $expected[$key],
+                $fixture->format($tag)
+            );
+        }
+    }
+}