INFOPORTAL-10267: Add test for drupal cache factory trait.

tests/src/Core/Cache/DrupalCacheFactoryTraitTest.php

@@ -0,0 +1,63 @@
+<?php
+
+namespace drunomics\ServiceUtils\Tests\Core\Cache;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\DependencyInjection\Container;
+use drunomics\ServiceUtils\Core\Cache\DrupalCacheFactoryTrait;
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+
+/**
+ * @coversDefaultClass \drunomics\ServiceUtils\Core\Cache\DrupalCacheFactoryTrait
+ * @group ServiceUtils
+ */
+class DrupalCacheFactoryTraitTest extends TestCase {
+
+  use DrupalCacheFactoryTrait;
+  use ProphecyTrait;
+
+  /**
+   * @covers ::getCache
+   */
+  public function testGetCacheDefaultBin(): void {
+    $service = $this->mockContainerWithFakeService('cache.default', ['calls' => 1]);
+    $this->assertSame($service, $this->getCache());
+  }
+
+  /**
+   * @covers ::getCache
+   */
+  public function testGetCacheCustomBin(): void {
+    $service = $this->mockContainerWithFakeService('cache.render', ['calls' => 1]);
+    $this->assertSame($service, $this->getCache('render'));
+  }
+
+  /**
+   * Helper to mock the container with a stub cache backend service.
+   *
+   * @param string $serviceId
+   *   The expected service ID.
+   * @param array{calls:int} $options
+   *   An array with the following keys:
+   *   - calls: The number of calls to get the service the mocked container
+   *     expects.
+   *
+   * @return \Drupal\Core\Cache\CacheBackendInterface
+   *   The fake cache backend returned by the container.
+   */
+  protected function mockContainerWithFakeService(string $serviceId, array $options): CacheBackendInterface {
+    $service = $this->prophesize(CacheBackendInterface::class)->reveal();
+
+    $container = $this->prophesize(Container::class);
+    $prophecy = $container->get($serviceId);
+    /** @var \Prophecy\Prophecy\MethodProphecy $prophecy */
+    $prophecy->shouldBeCalledTimes($options['calls']);
+    $prophecy->willReturn($service);
+
+    \Drupal::setContainer($container->reveal());
+
+    return $service;
+  }
+
+}