added annotation based exporter (#1831)

* added user exporter
* added project exporter
* added customer exporter
* added activity exporter

tests/Export/Spreadsheet/CellFormatter/ArrayFormatterTest.php

@@ -0,0 +1,47 @@
+<?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\Spreadsheet\CellFormatter;
+
+use App\Export\Spreadsheet\CellFormatter\ArrayFormatter;
+use App\Export\Spreadsheet\CellFormatter\CellFormatterInterface;
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+/**
+ * @covers \App\Export\Spreadsheet\CellFormatter\ArrayFormatter
+ */
+class ArrayFormatterTest extends AbstractFormatterTest
+{
+    protected function getFormatter(): CellFormatterInterface
+    {
+        return new ArrayFormatter();
+    }
+
+    protected function getActualValue()
+    {
+        return ['test', 'foo', 'bar'];
+    }
+
+    protected function getExpectedValue()
+    {
+        return 'test;foo;bar';
+    }
+
+    public function testFormattedValueWithInvalidValue()
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('Unsupported value given, only array is supported');
+
+        $spreadsheet = new Spreadsheet();
+        $worksheet = $spreadsheet->getActiveSheet();
+
+        $sut = $this->getFormatter();
+        $sut->setFormattedValue($worksheet, 1, 1, 'sdfsdf');
+    }
+}