Display meta-fields in datatables (#1116)

tests/Event/ActivityMetaDisplayEventTest.php

@@ -0,0 +1,39 @@
+<?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\Event;
+
+use App\Entity\ActivityMeta;
+use App\Event\ActivityMetaDisplayEvent;
+use App\Event\MetaDisplayEventInterface;
+use App\Repository\Query\ActivityQuery;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Event\ActivityMetaDisplayEvent
+ */
+class ActivityMetaDisplayEventTest extends TestCase
+{
+    public function testGetterAndSetter()
+    {
+        $query = new ActivityQuery();
+        $sut = new ActivityMetaDisplayEvent($query, ActivityMetaDisplayEvent::EXPORT);
+
+        self::assertInstanceOf(MetaDisplayEventInterface::class, $sut);
+        self::assertSame($sut->getQuery(), $query);
+        self::assertIsArray($sut->getFields());
+        self::assertEmpty($sut->getFields());
+        self::assertEquals('export', $sut->getLocation());
+
+        $sut->addField(new ActivityMeta());
+        $sut->addField(new ActivityMeta());
+
+        self::assertCount(2, $sut->getFields());
+    }
+}