Add tests for the StringToListTransformer class

src/Wallabag/CoreBundle/Tests/Form/DataTransformer/StringToListTransformerTest.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Wallabag\CoreBundle\Tests\Form\DataTransformer;
+
+use Wallabag\CoreBundle\Form\DataTransformer\StringToListTransformer;
+
+class StringToListTransformerTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @dataProvider transformProvider
+     */
+    public function testTransformWithValidData($inputData, $expectedResult)
+    {
+        $transformer = new StringToListTransformer();
+
+        $this->assertSame($expectedResult, $transformer->transform($inputData));
+    }
+
+    public function transformProvider()
+    {
+        return array(
+            array( null,                                 '' ),
+            array( array(),                              '' ),
+            array( array('single value'),                'single value' ),
+            array( array('first value', 'second value'), 'first value,second value' ),
+        );
+    }
+
+    /**
+     * @dataProvider reverseTransformProvider
+     */
+    public function testReverseTransformWithValidData($inputData, $expectedResult)
+    {
+        $transformer = new StringToListTransformer();
+
+        $this->assertSame($expectedResult, $transformer->reverseTransform($inputData));
+    }
+
+    public function reverseTransformProvider()
+    {
+        return array(
+            array( null,                            null ),
+            array( '',                              array() ),
+            array( 'single value',                  array('single value') ),
+            array( 'first value,second value',      array('first value', 'second value') ),
+            array( 'first value,     second value', array('first value', 'second value') ),
+            array( 'first value,  ,  second value', array('first value', 'second value') ),
+        );
+    }
+}