added API for handling work contract times (#4016)

tests/Entity/WorkingTimeTest.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\Entity;
+
+use App\Entity\User;
+use App\Entity\WorkingTime;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Entity\WorkingTime
+ */
+class WorkingTimeTest extends TestCase
+{
+    public function testDefaultValues(): void
+    {
+        $user = new User();
+        $user->setUsername('bar');
+        $date = new \DateTime();
+        $sut = new WorkingTime($user, $date);
+
+        self::assertSame($user, $sut->getUser());
+        self::assertSame($date, $sut->getDate());
+
+        self::assertNull($sut->getId());
+
+        self::assertEquals(0, $sut->getActualTime());
+        self::assertEquals(0, $sut->getExpectedTime());
+        self::assertNull($sut->getApprovedAt());
+        self::assertNull($sut->getApprovedBy());
+        self::assertFalse($sut->isApproved());
+
+        $approvedAt = new \DateTime('2023-01-01 12:00:00', new \DateTimeZone('Europe/Vienna'));
+        $approvedBy = new User();
+        $approvedBy->setUsername('foo');
+
+        $sut->setApprovedAt($approvedAt);
+        $sut->setApprovedBy($approvedBy);
+        $sut->setActualTime(5600);
+        $sut->setExpectedTime(8600);
+
+        self::assertSame(5600, $sut->getActualTime());
+        self::assertSame(8600, $sut->getExpectedTime());
+        self::assertSame($approvedAt, $sut->getApprovedAt());
+        self::assertSame($approvedBy, $sut->getApprovedBy());
+        self::assertTrue($sut->isApproved());
+    }
+}