faster spreadsheet exporter based on opensout and other export improvements (#5238)

tests/Export/Package/CellFormatter/DurationFormatterTest.php

@@ -0,0 +1,54 @@
+<?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\Package\CellFormatter;
+
+use App\Export\Package\CellFormatter\DurationFormatter;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Export\Package\CellFormatter\DurationFormatter
+ */
+class DurationFormatterTest extends TestCase
+{
+    public function testFormatValueReturnsFormattedDurationForNumericValue(): void
+    {
+        $formatter = new DurationFormatter();
+        $result = $formatter->formatValue(7200);
+        self::assertEquals(2.00, $result);
+    }
+
+    public function testFormatValueReturnsZeroForNonNumericValue(): void
+    {
+        $formatter = new DurationFormatter();
+        $result = $formatter->formatValue('not a number');
+        self::assertEquals(0.0, $result);
+    }
+
+    public function testFormatValueReturnsFormattedDurationForFloatValue(): void
+    {
+        $formatter = new DurationFormatter();
+        $result = $formatter->formatValue(4500.5);
+        self::assertEquals(1.25, $result);
+    }
+
+    public function testFormatValueReturnsZeroForNullValue(): void
+    {
+        $formatter = new DurationFormatter();
+        $result = $formatter->formatValue(null);
+        self::assertEquals(0.0, $result);
+    }
+
+    public function testFormatValueReturnsFormattedDurationForNegativeValue(): void
+    {
+        $formatter = new DurationFormatter();
+        $result = $formatter->formatValue(-3600);
+        self::assertEquals(-1.00, $result);
+    }
+}