Add feature was disabled event

src/Write/Event/FeatureWasDisabled.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pheature\Core\Toggle\Write\Event;
+
+use Pheature\Core\Toggle\Write\FeatureId;
+use DatetimeImmutable;
+
+final class FeatureWasDisabled
+{
+    private string $featureId;
+    private DatetimeImmutable $occurredAt;
+
+    public function __construct(string $featureId, DatetimeImmutable $occurredAt)
+    {
+        $this->featureId = $featureId;
+        $this->occurredAt = $occurredAt;
+    }
+
+    public static function occur(string $featureId): self
+    {
+        return new self($featureId, new DatetimeImmutable());
+    }
+
+    public function featureId(): FeatureId
+    {
+        return FeatureId::fromString($this->featureId);
+    }
+
+    public function occurredAt(): DatetimeImmutable
+    {
+        return $this->occurredAt;
+    }
+}

src/Write/Feature.php

@@ -4,6 +4,7 @@
 
 namespace Pheature\Core\Toggle\Write;
 
+use Pheature\Core\Toggle\Write\Event\FeatureWasDisabled;
 use Pheature\Core\Toggle\Write\Event\FeatureWasCreated;
 use JsonSerializable;
 
@@ -72,6 +73,7 @@ public function enable(): void
     public function disable(): void
     {
         $this->enabled = false;
+        $this->events[] = FeatureWasDisabled::occur($this->featureId->value());
     }
 
     public function isEnabled(): bool

test/Write/FeatureTest.php

@@ -4,6 +4,7 @@
 
 namespace Pheature\Test\Core\Toggle\Write;
 
+use Pheature\Core\Toggle\Write\Event\FeatureWasDisabled;
 use Pheature\Core\Toggle\Write\Feature;
 use Pheature\Core\Toggle\Write\FeatureId;
 use Pheature\Core\Toggle\Write\Strategy;
@@ -62,7 +63,11 @@ public function testItShouldBeDisabled(): void
         $feature->disable();
         $this->assertFalse($feature->isEnabled());
         $events = $feature->release();
-        $this->assertCount(1, $events); // Released FeatureWasCreated event
+        $this->assertCount(2, $events); // Released FeatureWasCreated event and FeatureWasDisabled event
+        $featureWasDisabledEvent = $events[1];
+        $this->assertInstanceOf(FeatureWasDisabled::class, $featureWasDisabledEvent);
+        $this->assertSame(self::FEATURE_ID, $featureWasDisabledEvent->featureId()->value());
+        $this->assertInstanceOf(DatetimeImmutable::class, $featureWasDisabledEvent->occurredAt());
     }
 
     public function testItShouldSetAnStrategy(): void