Add tests

Author: Arkalo2

src/LiveComponent/src/Test/InteractsWithLiveComponents.php

@@ -56,12 +56,12 @@ protected function assertComponentEmitEvent(TestLiveComponent $testLiveComponent
         }
 
         foreach ($parameters as $key => $value) {
-            $this->assertSame($value, $eventData['data'][$key], \sprintf('EventData (%s) is not valid', $key));
+            $this->assertSame($value, $eventData['data'][$key] ?? null, \sprintf('EventData (%s) is not valid', $key));
         }
     }
 
     protected function assertComponentNotEmitEvent(TestLiveComponent $testLiveComponent, string $eventName): void
     {
-        $this->assertNull($this->testLiveComponent($testLiveComponent->render(), $eventName), \sprintf('Event %s emitted', $eventName));
+        $this->assertNull($testLiveComponent->getEmittedEvent($testLiveComponent->render(), $eventName), \sprintf('Event %s emitted', $eventName));
     }
 }

src/LiveComponent/tests/Functional/Test/InteractsWithLiveComponentsTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\UX\LiveComponent\Tests\Functional\Test;
 
+use PHPUnit\Framework\AssertionFailedError;
 use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
 use Symfony\Component\Security\Core\Exception\AccessDeniedException;
 use Symfony\Component\Security\Core\User\InMemoryUser;
@@ -217,4 +218,38 @@ public function testSetLocaleRenderLocalizedComponent(): void
         $testComponent->setRouteLocale('de');
         $this->assertStringContainsString('Locale: de', $testComponent->render());
     }
+
+    public function testComponentEmitsExpectedEventWithParameters(): void
+    {
+        $testComponent = $this->createLiveComponent('component_with_emit');
+
+        $testComponent->call('actionThatEmits');
+
+        $this->assertComponentEmitEvent($testComponent, 'event1', [
+            'foo' => 'bar',
+        ]);
+    }
+
+    public function testComponentDoesNotEmitUnexpectedEvent(): void
+    {
+        $testComponent = $this->createLiveComponent('component_with_emit');
+
+        $testComponent->call('actionThatEmits');
+
+        $this->assertComponentNotEmitEvent($testComponent, 'non_emitted_event');
+    }
+
+    public function testComponentEmitsEventWithWrongParametersFails(): void
+    {
+        $testComponent = $this->createLiveComponent('component_with_emit');
+
+        $testComponent->call('actionThatEmits');
+
+        $this->expectException(AssertionFailedError::class);
+        $this->expectExceptionMessage('EventData (foo2) is not valid');
+        $this->assertComponentEmitEvent($testComponent, 'event1', [
+            'foo' => 'bar',
+            'foo2' => 'bar2',
+        ]);
+    }
 }