diff --git a/tests/test-class-plugin-eventin.php b/tests/test-class-plugin-eventin.php
index 504045e..a4acc05 100644
--- a/tests/test-class-plugin-eventin.php
+++ b/tests/test-class-plugin-eventin.php
@@ -51,7 +51,7 @@ class Test_Eventin extends WP_UnitTestCase {
 				'etn_end_date'   => \gmdate( 'Y-m-d', strtotime( '+10 days 16:00:00' ) ),
 				'etn_start_time' => \gmdate( 'H:i', strtotime( '+10 days 15:00:00' ) ),
 				'etn_end_time'   => \gmdate( 'H:i', strtotime( '+10 days 15:00:00' ) ),
-				'etn_timezone'   => 'Europe/Vienna',
+				'event_timezone' => 'Europe/Vienna',
 			)
 		);
 
@@ -61,4 +61,47 @@ class Test_Eventin extends WP_UnitTestCase {
 		// Check that we got the right transformer.
 		$this->assertInstanceOf( \ActivityPub_Event_Bridge\Activitypub\Transformer\Eventin::class, $transformer );
 	}
+
+	/**
+	 * Test that the right transformer gets applied.
+	 */
+	public function test_eventin_test_minimal_event() {
+		// We only test for one event plugin being active at the same time,
+		// even though we support multiple onces in theory.
+		// But testing all combinations is beyond scope.
+		$active_event_plugins = \ActivityPub_Event_Bridge\Setup::get_instance()->get_active_event_plugins();
+		$this->assertEquals( 1, count( $active_event_plugins ) );
+
+		// Enable ActivityPub support for the event plugin.
+		$this->assertContains( 'etn', get_option( 'activitypub_support_post_types' ) );
+
+		// Create a Eventin Event without content.
+		$event = new \Etn\Core\Event\Event_Model();
+		$event->create(
+			array(
+				'post_status'    => 'publish',
+				'post_title'     => 'Eventin Test Event Title',
+				'post_content'   => 'Eventin Test Event Description',
+				'etn_start_date' => \gmdate( 'Y-m-d', strtotime( '+10 days 15:00:00' ) ),
+				'etn_end_date'   => \gmdate( 'Y-m-d', strtotime( '+10 days 16:00:00' ) ),
+				'etn_start_time' => '03:00 PM',
+				'etn_end_time'   => '04:00 PM',
+				'event_timezone' => 'Europe/Vienna',
+			)
+		);
+
+		// Call the transformer Factory.
+		$event_array = \Activitypub\Transformer\Factory::get_transformer( get_post( $event->id ) )->to_object()->to_array();
+
+		$this->assertEquals( 'Event', $event_array['type'] );
+		$this->assertEquals( 'Eventin Test Event Title', $event_array['name'] );
+		$this->assertEquals( 'Eventin Test Event Description', wp_strip_all_tags( $event_array['content'] ) );
+		$this->assertEquals( gmdate( 'Y-m-d', strtotime( '+10 days 15:00:00' ) ) . 'T15:00:00Z', $event_array['startTime'] );
+		$this->assertEquals( comments_open( $event->id ), $event_array['commentsEnabled'] );
+		$this->assertEquals( comments_open( $event->id ) ? 'allow_all' : 'closed', $event_array['repliesModerationOption'] );
+		$this->assertEquals( 'external', $event_array['joinMode'] );
+		$this->assertArrayNotHasKey( 'location', $event_array );
+		$this->assertArrayNotHasKey( 'endTime', $event_array );
+		$this->assertEquals( 'MEETING', $event_array['category'] );
+	}
 }