Add tests for counting previous talks

References #31

.idea/php.xml

@@ -139,6 +139,8 @@
       <path value="$PROJECT_DIR$/vendor/consolidation/robo" />
       <path value="$PROJECT_DIR$/vendor/consolidation/filter-via-dot-access-data" />
       <path value="$PROJECT_DIR$/vendor/cweagans/composer-patches" />
+      <path value="$PROJECT_DIR$/vendor/laminas/laminas-zendframework-bridge" />
+      <path value="$PROJECT_DIR$/vendor/laminas/laminas-stdlib" />
     </include_path>
   </component>
   <component name="PhpProjectSharedConfiguration" php_language_level="7.4" />

web/modules/custom/custom/custom.services.yml

@@ -2,3 +2,6 @@ services:
   Drupal\custom\EventSubscriber\UpdateTalkNodeBeforeSave:
     tags:
       - { name: event_subscriber }
+
+  Drupal\custom\Service\TalkCounter:
+    autowire: true

web/modules/custom/custom/src/Service/TalkCounter.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\custom\Service;
+
+use Carbon\Carbon;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\custom\Entity\Node\Talk;
+use Drupal\node\NodeInterface;
+use Drupal\paragraphs\ParagraphInterface;
+use Illuminate\Support\Collection;
+
+final class TalkCounter {
+
+  private EntityStorageInterface $nodeStorage;
+
+  public function __construct(EntityTypeManagerInterface $entityTypeManager) {
+    $this->nodeStorage = $entityTypeManager->getStorage('node');
+  }
+
+  public function getCount(): int {
+    $today = Carbon::today()->format('Y-m-d H:i:s');
+
+    return $this->getTalks()
+      ->flatMap->getEvents()
+      ->filter(fn(ParagraphInterface $event) => $event->get('field_date')->getString() <= $today)
+      ->count();
+  }
+
+  private function getTalks(): Collection {
+    $talks = $this->nodeStorage->loadByProperties([
+      'status' => NodeInterface::PUBLISHED,
+      'type' => 'talk',
+    ]);
+
+    return new Collection($talks);
+  }
+
+}

web/modules/custom/custom/tests/src/Kernel/CountPreviousTalksTest.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Drupal\Tests\custom\Kernel;
+
+use Carbon\Carbon;
+use Drupal\custom\Service\TalkCounter;
+use Drupal\node\NodeInterface;
+use PHPUnit\Framework\Assert;
+
+class CountPreviousTalksTest extends TalksTestBase {
+
+  private TalkCounter $talkCounter;
+
+  /** @test */
+  public function previous_talks_are_counted(): void {
+    $this->createTalk([
+      'field_events' => [
+        $this->createEvent(),
+        $this->createEvent(),
+      ],
+    ]);
+
+    $this->createTalk([
+      'field_events' => [
+        $this->createEvent(),
+      ],
+    ]);
+
+    Assert::assertSame(3, $this->talkCounter->getCount());
+  }
+
+  /** @test */
+  public function future_talks_are_not_counted(): void {
+    $this->createTalk([
+      'field_events' => [
+        $this->createEvent([
+          'field_date' => Carbon::now()->subDay(),
+        ]),
+        $this->createEvent([
+          'field_date' => Carbon::now()->addDay(),
+        ]),
+      ],
+    ]);
+
+    Assert::assertSame(1, $this->talkCounter->getCount());
+  }
+
+  /** @test */
+  public function unpublished_talks_are_not_counted(): void {
+    $this->createTalk([
+      'field_events' => [$this->createEvent()],
+      'status' => NodeInterface::NOT_PUBLISHED,
+    ]);
+
+    Assert::assertSame(0, $this->talkCounter->getCount());
+  }
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->talkCounter = $this->container->get(TalkCounter::class);
+  }
+
+}