Configurable rate rounding (#5734)

* added invoice hydration of the issuer object
* added "rate calculator" mode
* new config to select rounding mode
* replace static calls with dependency injection

tests/Timesheet/RateCalculator/RateCalculatorFactoryTest.php

@@ -0,0 +1,48 @@
+<?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\Timesheet\RateCalculator;
+
+use App\Tests\Mocks\SystemConfigurationFactory;
+use App\Timesheet\RateCalculator\ClassicRateCalculator;
+use App\Timesheet\RateCalculator\DecimalRateCalculator;
+use App\Timesheet\RateCalculator\RateCalculatorFactory;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(RateCalculatorFactory::class)]
+class RateCalculatorFactoryTest extends TestCase
+{
+    private function assertCreatesClassicConfig(array $config): void
+    {
+        $config = SystemConfigurationFactory::createStub($config);
+        $sut = new RateCalculatorFactory($config);
+
+        $mode = $sut->getRateCalculatorMode();
+        self::assertInstanceOf(ClassicRateCalculator::class, $mode);
+    }
+
+    public function testCreatesClassic(): void
+    {
+        $this->assertCreatesClassicConfig([]);
+        $this->assertCreatesClassicConfig(['invoice' => ['rounding_mode' => 'classic']]);
+        $this->assertCreatesClassicConfig(['invoice' => ['rounding_mode' => '']]);
+        $this->assertCreatesClassicConfig(['invoice' => ['rounding_mode' => 'foo']]);
+        $this->assertCreatesClassicConfig(['invoice' => ['rounding_mode' => 'DECIMAL']]);
+    }
+
+    public function testCreateWithDecimalConfig(): void
+    {
+        $config = SystemConfigurationFactory::createStub(['invoice' => ['rounding_mode' => 'decimal']]);
+        $sut = new RateCalculatorFactory($config);
+
+        $mode = $sut->getRateCalculatorMode();
+        self::assertInstanceOf(DecimalRateCalculator::class, $mode);
+    }
+}