Started implementing building blocks for the merge system

tests/Services/EntityMergers/Mergers/PartMergerTest.php

@@ -0,0 +1,89 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace App\Tests\Services\EntityMergers\Mergers;
+
+use App\Entity\Parts\Part;
+use App\Entity\Parts\PartLot;
+use App\Services\EntityMergers\Mergers\PartMerger;
+use PHPUnit\Framework\TestCase;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+
+class PartMergerTest extends KernelTestCase
+{
+
+    /** @var PartMerger|null  */
+    protected ?PartMerger $merger = null;
+
+    protected function setUp(): void
+    {
+        self::bootKernel();
+        $this->merger = self::getContainer()->get(PartMerger::class);
+    }
+
+    /**
+     * This test also functions as test for EntityMergerHelperTrait::mergeCollections() so its pretty long.
+     * @return void
+     */
+    public function testMergePartLots()
+    {
+        $lot1 = (new PartLot())->setAmount(2)->setNeedsRefill(true);
+        $lot2 = (new PartLot())->setInstockUnknown(true)->setVendorBarcode('test');
+        $lot3 = (new PartLot())->setDescription('lot3')->setAmount(3);
+        $lot4 = (new PartLot())->setDescription('lot4')->setComment('comment');
+
+        $part1 = (new Part())
+            ->setName('Part 1')
+            ->addPartLot($lot1)
+            ->addPartLot($lot2);
+
+        $part2 = (new Part())
+            ->setName('Part 2')
+            ->addPartLot($lot3)
+            ->addPartLot($lot4);
+
+        $merged = $this->merger->merge($part1, $part2);
+
+        $this->assertInstanceOf(Part::class, $merged);
+        //We should now have all 4 lots
+        $this->assertCount(4, $merged->getPartLots());
+
+        //The existing lots should be the same instance as before
+        $this->assertSame($lot1, $merged->getPartLots()->get(0));
+        $this->assertSame($lot2, $merged->getPartLots()->get(1));
+        //While the new lots should be new instances
+        $this->assertNotSame($lot3, $merged->getPartLots()->get(2));
+        $this->assertNotSame($lot4, $merged->getPartLots()->get(3));
+
+        //But the new lots, should be assigned to the target part and contain the same info
+        $clone3 = $merged->getPartLots()->get(2);
+        $clone4 = $merged->getPartLots()->get(3);
+        $this->assertSame($merged, $clone3->getPart());
+        $this->assertSame($merged, $clone4->getPart());
+
+    }
+
+    public function testSupports()
+    {
+        $this->assertFalse($this->merger->supports(new \stdClass(), new \stdClass()));
+        $this->assertFalse($this->merger->supports(new \stdClass(), new Part()));
+        $this->assertTrue($this->merger->supports(new Part(), new Part()));
+    }
+}