added export context (#2216)

tests/Export/ExportContextTest.php

@@ -0,0 +1,37 @@
+<?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;
+
+use App\Export\ExportContext;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Export\ExportContext
+ */
+class ExportContextTest extends TestCase
+{
+    public function testEmptyObject()
+    {
+        $sut = new ExportContext();
+
+        self::assertIsArray($sut->getOptions());
+        self::assertEmpty($sut->getOptions());
+        self::assertNull($sut->getOption('unknown'));
+    }
+
+    public function testSetterAndGetter()
+    {
+        $sut = new ExportContext();
+
+        self::assertNull($sut->getOption('unknown'));
+        $sut->setOption('unknown', 'foo');
+        self::assertEquals('foo', $sut->getOption('unknown'));
+    }
+}