in memory store should set last saved date

src/Subscription/Store/InMemorySubscriptionStore.php

@@ -4,7 +4,9 @@
 
 namespace Patchlevel\EventSourcing\Subscription\Store;
 
+use Patchlevel\EventSourcing\Clock\SystemClock;
 use Patchlevel\EventSourcing\Subscription\Subscription;
+use Psr\Clock\ClockInterface;
 
 use function array_filter;
 use function array_key_exists;
@@ -17,8 +19,10 @@ final class InMemorySubscriptionStore implements SubscriptionStore
     private array $subscriptions = [];
 
     /** @param list<Subscription> $subscriptions */
-    public function __construct(array $subscriptions = [])
-    {
+    public function __construct(
+        array $subscriptions = [],
+        private readonly ClockInterface $clock = new SystemClock(),
+    ) {
         foreach ($subscriptions as $subscription) {
             $this->subscriptions[$subscription->id()] = $subscription;
         }
@@ -76,6 +80,8 @@ public function add(Subscription $subscription): void
             throw new SubscriptionAlreadyExists($subscription->id());
         }
 
+        $subscription->updateLastSavedAt($this->clock->now());
+
         $this->subscriptions[$subscription->id()] = $subscription;
     }
 
@@ -85,6 +91,8 @@ public function update(Subscription $subscription): void
             throw new SubscriptionNotFound($subscription->id());
         }
 
+        $subscription->updateLastSavedAt($this->clock->now());
+
         $this->subscriptions[$subscription->id()] = $subscription;
     }
 

tests/Unit/Subscription/DummySubscriptionStore.php

@@ -4,14 +4,20 @@
 
 namespace Patchlevel\EventSourcing\Tests\Unit\Subscription;
 
+use DateTimeImmutable;
+use Patchlevel\EventSourcing\Clock\FrozenClock;
 use Patchlevel\EventSourcing\Subscription\Store\InMemorySubscriptionStore;
 use Patchlevel\EventSourcing\Subscription\Store\SubscriptionCriteria;
 use Patchlevel\EventSourcing\Subscription\Store\SubscriptionStore;
 use Patchlevel\EventSourcing\Subscription\Subscription;
+use PHPUnit\Framework\Assert;
+use Psr\Clock\ClockInterface;
 
 final class DummySubscriptionStore implements SubscriptionStore
 {
-    private InMemorySubscriptionStore $parentStore;
+    private readonly ClockInterface $clock;
+
+    private readonly InMemorySubscriptionStore $parentStore;
 
     /** @var list<Subscription> */
     public array $addedSubscriptions = [];
@@ -23,9 +29,11 @@ final class DummySubscriptionStore implements SubscriptionStore
     public array $removedSubscriptions = [];
 
     /** @param list<Subscription> $subscriptions */
-    public function __construct(array $subscriptions = [])
-    {
-        $this->parentStore = new InMemorySubscriptionStore($subscriptions);
+    public function __construct(
+        array $subscriptions = [],
+    ) {
+        $this->clock = new FrozenClock(new DateTimeImmutable('2021-01-01T00:00:00.000000+00:00'));
+        $this->parentStore = new InMemorySubscriptionStore($subscriptions, $this->clock);
     }
 
     public function get(string $subscriptionId): Subscription
@@ -63,4 +71,66 @@ public function reset(): void
         $this->updatedSubscriptions = [];
         $this->removedSubscriptions = [];
     }
+
+    public function assertNoChanges(): void
+    {
+        Assert::assertEmpty($this->addedSubscriptions);
+        Assert::assertEmpty($this->updatedSubscriptions);
+        Assert::assertEmpty($this->removedSubscriptions);
+    }
+
+    public function assertNoAdded(): void
+    {
+        Assert::assertEmpty($this->addedSubscriptions);
+    }
+
+    public function assertAdded(Subscription ...$subscriptions): void
+    {
+        foreach ($subscriptions as $subscription) {
+            if ($subscription->lastSavedAt() !== null) {
+                continue;
+            }
+
+            $subscription->updateLastSavedAt($this->clock->now());
+        }
+
+        Assert::assertEquals(
+            $subscriptions,
+            $this->addedSubscriptions,
+        );
+    }
+
+    public function assertNoUpdated(): void
+    {
+        Assert::assertEmpty($this->updatedSubscriptions);
+    }
+
+    public function assertUpdated(Subscription ...$subscriptions): void
+    {
+        foreach ($subscriptions as $subscription) {
+            if ($subscription->lastSavedAt() !== null) {
+                continue;
+            }
+
+            $subscription->updateLastSavedAt($this->clock->now());
+        }
+
+        Assert::assertEquals(
+            $subscriptions,
+            $this->updatedSubscriptions,
+        );
+    }
+
+    public function assertNoRemoved(): void
+    {
+        Assert::assertEmpty($this->removedSubscriptions);
+    }
+
+    public function assertRemoved(Subscription ...$subscriptions): void
+    {
+        Assert::assertEquals(
+            $subscriptions,
+            $this->removedSubscriptions,
+        );
+    }
 }