[#18] Add StrategyWasRemoved event

src/Write/Event/StrategyWasRemoved.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pheature\Core\Toggle\Write\Event;
+
+use DateTimeImmutable;
+use Pheature\Core\Toggle\Write\FeatureId;
+use Pheature\Core\Toggle\Write\StrategyId;
+
+final class StrategyWasRemoved
+{
+    private string $featureId;
+    private string $strategyId;
+    private DatetimeImmutable $occurredAt;
+
+    public function __construct(string $featureId, string $strategyId, DatetimeImmutable $occurredAt)
+    {
+        $this->featureId = $featureId;
+        $this->strategyId = $strategyId;
+        $this->occurredAt = $occurredAt;
+    }
+
+    public static function occur(string $featureId, string $strategyId): self
+    {
+        return new self($featureId, $strategyId, new DatetimeImmutable());
+    }
+
+    public function featureId(): FeatureId
+    {
+        return FeatureId::fromString($this->featureId);
+    }
+
+    public function strategyId(): StrategyId
+    {
+        return StrategyId::fromString($this->strategyId);
+    }
+
+    public function occurredAt(): DatetimeImmutable
+    {
+        return $this->occurredAt;
+    }
+}

src/Write/Feature.php

@@ -9,6 +9,7 @@
 use Pheature\Core\Toggle\Write\Event\FeatureWasCreated;
 use JsonSerializable;
 use Pheature\Core\Toggle\Write\Event\FeatureWasRemoved;
+use Pheature\Core\Toggle\Write\Event\StrategyWasRemoved;
 
 use function array_map;
 use function array_values;
@@ -65,6 +66,7 @@ public function setStrategy(Strategy $strategy): void
     public function removeStrategy(StrategyId $strategyId): void
     {
         unset($this->strategies[$strategyId->value()]);
+        $this->events[] = StrategyWasRemoved::occur($this->featureId->value(), $strategyId->value());
     }
 
     public function enable(): void

test/Write/FeatureTest.php

@@ -7,6 +7,7 @@
 use Pheature\Core\Toggle\Write\Event\FeatureWasDisabled;
 use Pheature\Core\Toggle\Write\Event\FeatureWasEnabled;
 use Pheature\Core\Toggle\Write\Event\FeatureWasRemoved;
+use Pheature\Core\Toggle\Write\Event\StrategyWasRemoved;
 use Pheature\Core\Toggle\Write\Feature;
 use Pheature\Core\Toggle\Write\FeatureId;
 use Pheature\Core\Toggle\Write\Strategy;
@@ -96,7 +97,7 @@ public function testItShouldSetAnStrategy(): void
         $this->assertCount(0, $events);
     }
 
-    public function testItShouldRemoveAnStrategies(): void
+    public function testItShouldRemoveAnStrategy(): void
     {
         $feature = $this->createFeatureWithAnStrategy();
         $this->assertCount(1, $feature->strategies());
@@ -105,7 +106,12 @@ public function testItShouldRemoveAnStrategies(): void
         $this->assertCount(0, $feature->strategies());
 
         $events = $feature->release();
-        $this->assertCount(0, $events);
+        $this->assertCount(1, $events);
+        $this->assertEventIsRecorded(StrategyWasRemoved::class, $events);
+        $strategyWasRemoved = $events[0];
+        $this->assertSame(self::FEATURE_ID, $strategyWasRemoved->featureId()->value());
+        $this->assertSame(self::STRATEGY_ID, $strategyWasRemoved->strategyId()->value());
+        $this->assertInstanceOf(DatetimeImmutable::class, $strategyWasRemoved->occurredAt());
     }
 
     public function testItShouldStoreAFeatureWasCreatedEventWhenNewFeatureIsCreated(): void