VACMS-19227: Adds unit test coverage for AddPhilippinesAsStateSubscri…

…ber.

tests/phpunit/va_gov_address/unit/EventSubscriber/AddPhilippinesAsStateSubscriberTest.php

@@ -0,0 +1,92 @@
+<?php
+
+namespace tests\phpunit\va_gov_address\unit\EventSubscriber;
+
+use Drupal\address\Event\AddressEvents;
+use Drupal\address\Event\SubdivisionsEvent;
+use Drupal\va_gov_address\EventSubscriber\AddPhilippinesAsStateSubscriber;
+use Drupal\Tests\UnitTestCase;
+use Prophecy\Argument;
+
+/**
+ * Tests custom US address group.
+ *
+ * @coversDefaultClass \Drupal\va_gov_address\EventSubscriber\AddPhilippinesAsStateSubscriber
+ *
+ * @group va_gov_address
+ */
+class AddPhilippinesAsStateSubscriberTest extends UnitTestCase {
+
+  /**
+   * The event subscriber under test.
+   *
+   * @var \Drupal\va_gov_address\EventSubscriber\AddPhilippinesAsStateSubscriber
+   */
+  protected AddPhilippinesAsStateSubscriber $subscriber;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+    $this->subscriber = new AddPhilippinesAsStateSubscriber();
+  }
+
+  /**
+   * Tests the getSubscribedEvents method.
+   *
+   * @covers ::getSubscribedEvents
+   */
+  public function testGetSubscribedEvents() {
+    $events = AddPhilippinesAsStateSubscriber::getSubscribedEvents();
+    $this->assertArrayHasKey(AddressEvents::SUBDIVISIONS, $events);
+    $this->assertIsArray($events[AddressEvents::SUBDIVISIONS]);
+    $this->assertEquals(['onSubdivisions'], array_column($events[AddressEvents::SUBDIVISIONS], 0));
+  }
+
+  /**
+   * Tests the onSubdivisions method.
+   *
+   * @covers ::onSubdivisions
+   */
+  public function testOnSubdivisions() {
+    // Create a mock event.
+    /** @var \Prophecy\Prophecy\ObjectProphecy|\Drupal\address\Event\SubdivisionsEvent $event */
+    $event = $this->prophesize(SubdivisionsEvent::class);
+
+    // Mock the getParents method to return ['US'].
+    $event->getParents()->willReturn(['US']);
+
+    // Set up expected calls for getParents() and setDefinitions().
+    $event->getParents()->willReturn(['US']);
+    $event->setDefinitions(Argument::that(function ($definitions) {
+      // Validate that Philippines (PH) is added as a subdivision.
+      return isset($definitions['subdivisions']['PH'])
+        && $definitions['subdivisions']['PH']['name'] === 'Philippines';
+    }))->shouldBeCalled();
+
+    // Call the onSubdivisions method.
+    $this->subscriber->onSubdivisions($event->reveal());
+  }
+
+  /**
+   * Tests that onSubdivisions does not modify definitions for non-US parents.
+   *
+   * @covers ::onSubdivisions
+   */
+  public function testOnSubdivisionsNonUS() {
+    // Create a mock event.
+    /** @var \Prophecy\Prophecy\ObjectProphecy|\Drupal\address\Event\SubdivisionsEvent $event */
+    $event = $this->prophesize(SubdivisionsEvent::class);
+
+    // Mock the getParents method to return a non-US parent.
+    $event->getParents()->willReturn(['CA']);
+
+    // Assert that setDefinitions is never called.
+    $event->setDefinitions()->shouldNotBeCalled();
+
+    // Call the onSubdivisions method.
+    $this->subscriber->onSubdivisions($event->reveal());
+  }
+
+}