Add unit test for serializer

tests/Unit/Serializer/ProductNormalizerTest.php

@@ -0,0 +1,88 @@
+<?php
+
+namespace Tests\Webgriffe\SyliusElasticsearchPlugin\Unit\Serializer;
+
+use PHPUnit\Framework\TestCase;
+use Sylius\Component\Core\Model\Channel;
+use Sylius\Component\Core\Model\Product;
+use Sylius\Component\Core\Model\ProductInterface;
+use Sylius\Component\Product\Resolver\DefaultProductVariantResolver;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
+use Webgriffe\SyliusElasticsearchPlugin\Serializer\ProductNormalizer;
+
+class ProductNormalizerTest extends TestCase
+{
+    private ProductNormalizer $productNormalizer;
+
+    private Product $productToNormalize;
+    private Channel $channel;
+
+    protected function setUp(): void
+    {
+        $this->productNormalizer = new ProductNormalizer(
+            new DefaultProductVariantResolver(),
+            new EventDispatcher(),
+            'en_US',
+        );
+
+        $this->productToNormalize = new Product();
+
+        $reflectionProduct = new \ReflectionClass(Product::class);
+        $productIdProperty = $reflectionProduct->getProperty('id');
+        $productIdProperty->setValue($this->productToNormalize, 1);
+
+        $this->productToNormalize->setCode('ABARTH_595_HOODIE');
+        $this->productToNormalize->setEnabled(true);
+        $this->productToNormalize->setVariantSelectionMethod(ProductInterface::VARIANT_SELECTION_CHOICE);
+        $this->productToNormalize->setCreatedAt(new \DateTimeImmutable('2020-01-01 10:00:00', new \DateTimeZone('Europe/Rome')));
+
+        $this->channel = new Channel();
+    }
+
+    public function testItIsInstantiable(): void
+    {
+        $this->assertInstanceOf(ProductNormalizer::class, $this->productNormalizer);
+    }
+
+    public function testItIsAnInstanceOfNormalizer(): void
+    {
+        $this->assertInstanceOf(NormalizerInterface::class, $this->productNormalizer);
+    }
+
+    public function testItSupportProductInterfaceType(): void
+    {
+        $supportedTypes= $this->productNormalizer->getSupportedTypes(null);
+
+        $this->assertArrayHasKey(ProductInterface::class, $supportedTypes);
+        $this->assertTrue($supportedTypes[ProductInterface::class]);
+    }
+
+    public function testItSupportNormalizationWithRightType(): void
+    {
+        $this->assertTrue($this->productNormalizer->supportsNormalization($this->productToNormalize, null, ['type' => 'webgriffe_sylius_elasticsearch_plugin']));
+    }
+
+    public function testItDoesNotSupportNormalizationWithRightType(): void
+    {
+        $this->assertFalse($this->productNormalizer->supportsNormalization($this->productToNormalize, null, ['type' => 'other']));
+    }
+
+    public function testItDoesNotSupportNormalizationWithoutType(): void
+    {
+        $this->assertFalse($this->productNormalizer->supportsNormalization($this->productToNormalize));
+    }
+
+    public function testItNormalizeProduct(): void
+    {
+        $productNormalized = $this->productNormalizer->normalize($this->productToNormalize, null, ['channel' => $this->channel]);
+        $this->assertIsArray($productNormalized);
+
+        $this->assertEquals(1, $productNormalized['sylius-id']);
+        $this->assertEquals('ABARTH_595_HOODIE', $productNormalized['code']);
+        $this->assertEquals(true, $productNormalized['enabled']);
+        $this->assertEquals(ProductInterface::VARIANT_SELECTION_CHOICE, $productNormalized['variant-selection-method']);
+        $this->assertEquals(Product::getVariantSelectionMethodLabels()[ProductInterface::VARIANT_SELECTION_CHOICE], $productNormalized['variant-selection-method-label']);
+        $this->assertEquals('2020-01-01T10:00:00+01:00', $productNormalized['created-at']);
+    }
+}