added tags for timesheets (#604)

tests/Form/DataTransformer/TagArrayToStringTransformerTest.php

@@ -0,0 +1,59 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Export\Renderer;
+
+use App\Entity\Tag;
+use App\Form\DataTransformer\TagArrayToStringTransformer;
+use App\Repository\TagRepository;
+
+/**
+ * @covers \App\Form\DataTransformer\TagArrayToStringTransformer
+ */
+class TagArrayToStringTransformerTest extends AbstractRendererTest
+{
+    public function testTransform()
+    {
+        $results = [
+            (new Tag())->setName('foo'),
+            (new Tag())->setName('bar'),
+        ];
+
+        $repository = $this->getMockBuilder(TagRepository::class)->disableOriginalConstructor()->getMock();
+
+        $sut = new TagArrayToStringTransformer($repository);
+
+        $this->assertEquals('', $sut->transform([]));
+        $this->assertEquals('', $sut->transform(null));
+
+        $actual = $sut->transform($results);
+
+        $this->assertEquals('foo, bar', $actual);
+    }
+
+    public function testReverseTransform()
+    {
+        $results = [
+            (new Tag())->setName('foo'),
+            (new Tag())->setName('bar'),
+        ];
+
+        $repository = $this->getMockBuilder(TagRepository::class)->setMethods(['findBy'])->disableOriginalConstructor()->getMock();
+        $repository->expects($this->once())->method('findBy')->willReturn($results);
+
+        $sut = new TagArrayToStringTransformer($repository);
+
+        $this->assertEquals([], $sut->reverseTransform(''));
+        $this->assertEquals([], $sut->reverseTransform(null));
+
+        $actual = $sut->reverseTransform('foo, bar');
+
+        $this->assertEquals($results, $actual);
+    }
+}