Add SimpleEventDispatcher::getClassesEvents()

CHANGELOG.md

@@ -3,7 +3,7 @@
 
 ## 1.1.1 under development
 
-- no changes in this release.
+- Enh #24: Add `SimpleEventDispatcher::getEventClasses()` that return classes of dispatched events (vjik)
 
 ## 1.1.0 February 22, 2021
 

src/EventDispatcher/SimpleEventDispatcher.php

@@ -15,7 +15,10 @@ final class SimpleEventDispatcher implements EventDispatcherInterface
     /** @var array<int, Closure> */
     private array $listeners;
 
-    /** @var object[] */
+    /**
+     * @var object[]
+     * @psalm-var list<object>
+     */
     private array $events = [];
 
     /**
@@ -38,11 +41,23 @@ public function dispatch(object $event): object
         return $event;
     }
 
+    /**
+     * @return object[]
+     * @psalm-return list<object>
+     */
     public function getEvents(): array
     {
         return $this->events;
     }
 
+    /**
+     * @psalm-return list<class-string>
+     */
+    public function getEventClasses(): array
+    {
+        return array_map('\get_class', $this->events);
+    }
+
     public function clearEvents(): void
     {
         $this->events = [];

tests/EventDispatcher/SimpleEventDispatcherTest.php

@@ -11,6 +11,7 @@
 use InvalidArgumentException;
 use PHPUnit\Framework\TestCase;
 use RuntimeException;
+use stdClass;
 use Yiisoft\Test\Support\EventDispatcher\SimpleEventDispatcher;
 use Yiisoft\Test\Support\Tests\EventDispatcher\Stub\StoppableEvent;
 
@@ -225,6 +226,21 @@ public function testGetEvents(): void
         $this->assertSame([$event1, $event2, $event3], $dispatcher->getEvents());
     }
 
+    public function testGetEventClasses(): void
+    {
+        $dispatcher = $this->prepareDispatcher();
+
+        $dispatcher->dispatch(new stdClass());
+        $dispatcher->dispatch(new DateTimeImmutable());
+        $dispatcher->dispatch(new DateTime());
+
+        self::assertSame([
+            stdClass::class,
+            DateTimeImmutable::class,
+            DateTime::class,
+        ], $dispatcher->getEventClasses());
+    }
+
     public function testGetEmptyEvents(): void
     {
         $dispatcher = $this->prepareDispatcher();