Add test for normalizer

tests/Serializer/WeekdaysNormalizerTest.php

@@ -0,0 +1,121 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DigitalCraftsman\DateTimePrecision\Serializer;
+
+use DigitalCraftsman\DateTimePrecision\Weekday;
+use DigitalCraftsman\DateTimePrecision\Weekdays;
+use DigitalCraftsman\DateTimePrecision\Year;
+use PHPUnit\Framework\TestCase;
+
+/** @coversDefaultClass \DigitalCraftsman\DateTimePrecision\Serializer\WeekdaysNormalizer */
+final class WeekdaysNormalizerTest extends TestCase
+{
+    /**
+     * @test
+     *
+     * @covers ::normalize
+     * @covers ::denormalize
+     */
+    public function weekdays_normalization_and_denormalization_works(): void
+    {
+        // -- Arrange
+        $weekdays = new Weekdays([
+            Weekday::MONDAY,
+            Weekday::SATURDAY,
+        ]);
+
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act
+        $normalizedData = $normalizer->normalize($weekdays);
+        $denormalizedData = $normalizer->denormalize($normalizedData, Weekdays::class);
+
+        // -- Assert
+        self::assertEquals($weekdays, $denormalizedData);
+    }
+
+    /**
+     * @test
+     *
+     * @covers ::normalize
+     */
+    public function weekday_normalization_with_null_works(): void
+    {
+        // -- Arrange
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act
+        $normalizedData = $normalizer->normalize(null);
+
+        // -- Assert
+        self::assertNull($normalizedData);
+    }
+
+    /**
+     * @test
+     *
+     * @covers ::denormalize
+     */
+    public function weekdays_denormalization_with_null_works(): void
+    {
+        // -- Arrange
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act
+        $denormalizedData = $normalizer->denormalize(null, Weekdays::class);
+
+        // -- Assert
+        self::assertNull($denormalizedData);
+    }
+
+    /**
+     * @test
+     *
+     * @covers ::supportsNormalization
+     */
+    public function supports_normalization(): void
+    {
+        // -- Arrange
+        $weekdays = new Weekdays([
+            Weekday::MONDAY,
+            Weekday::SATURDAY,
+        ]);
+
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act & Assert
+        self::assertTrue($normalizer->supportsNormalization($weekdays));
+    }
+
+    /**
+     * @test
+     *
+     * @covers ::supportsNormalization
+     */
+    public function supports_normalization_fails(): void
+    {
+        // -- Arrange
+        $year = Year::fromString('2022');
+
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act & Assert
+        self::assertFalse($normalizer->supportsNormalization($year));
+    }
+
+    /**
+     * @test
+     *
+     * @covers ::supportsDenormalization
+     */
+    public function supports_denormalization(): void
+    {
+        // -- Arrange
+        $normalizer = new WeekdaysNormalizer();
+
+        // -- Act & Assert
+        self::assertTrue($normalizer->supportsDenormalization(null, Weekdays::class));
+    }
+}