added freelancer invoice template (#254)

tests/Invoice/DefaultCalculatorTest.php

@@ -0,0 +1,79 @@
+<?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\Invoice;
+
+use App\Entity\Customer;
+use App\Entity\InvoiceTemplate;
+use App\Entity\Timesheet;
+use App\Invoice\DefaultCalculator;
+use App\Model\InvoiceModel;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Invoice\DefaultCalculator
+ */
+class DefaultCalculatorTest extends TestCase
+{
+    public function testEmptyModel()
+    {
+        $customer = new Customer();
+        $template = new InvoiceTemplate();
+
+        $model = new InvoiceModel();
+        $model->setCustomer($customer);
+        $model->setTemplate($template);
+
+        $sut = new DefaultCalculator();
+        $sut->setModel($model);
+
+        $this->assertEquals(0, $sut->getTotal());
+        $this->assertEquals(0, $sut->getVat());
+        $this->assertEquals('EUR', $sut->getCurrency());
+        $this->assertEquals(0, $sut->getSubtotal());
+        $this->assertEquals(0, $sut->getTimeWorked());
+        $this->assertEquals([], $sut->getEntries());
+    }
+
+    public function testWithMultipleEntries()
+    {
+        $customer = new Customer();
+        $template = new InvoiceTemplate();
+        $template->setVat(19);
+
+        $timesheet = new Timesheet();
+        $timesheet->setDuration(3600);
+        $timesheet->setRate(293.27);
+
+        $timesheet2 = new Timesheet();
+        $timesheet2->setDuration(400);
+        $timesheet2->setRate(84);
+
+        $timesheet3 = new Timesheet();
+        $timesheet3->setDuration(1800);
+        $timesheet3->setRate(111.11);
+
+        $entries = [$timesheet, $timesheet2, $timesheet3];
+
+        $model = new InvoiceModel();
+        $model->setCustomer($customer);
+        $model->setTemplate($template);
+        $model->setEntries($entries);
+
+        $sut = new DefaultCalculator();
+        $sut->setModel($model);
+
+        $this->assertEquals(581.17, $sut->getTotal());
+        $this->assertEquals(19, $sut->getVat());
+        $this->assertEquals('EUR', $sut->getCurrency());
+        $this->assertEquals(488.38, $sut->getSubtotal());
+        $this->assertEquals(5800, $sut->getTimeWorked());
+        $this->assertEquals($entries, $sut->getEntries());
+    }
+}