Add exception wrapper with transparent delivery to the caller

core/src/test/java/dev/kske/eventbus/core/ExceptionWrapperTest.java

@@ -0,0 +1,33 @@
+package dev.kske.eventbus.core;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Tests the behavior of the event bus when an {@link ExceptionWrapper} is thrown.
+ *
+ * @author Kai S. K. Engelbart
+ * @since 1.2.1
+ */
+public class ExceptionWrapperTest {
+
+	EventBus	bus		= new EventBus();
+	String		event	= "This event will cause an exception";
+
+	/**
+	 * Tests transparent rethrowing of an exception wrapper by {@link EventBus#dispatch(Object)}.
+	 *
+	 * @since 1.2.1
+	 */
+	@Test
+	public void testExceptionWrapper() {
+		bus.registerListener(this);
+		assertThrows(ExceptionWrapper.class, () -> bus.dispatch(event));
+	}
+
+	@Event(String.class)
+	void onString() {
+		throw new ExceptionWrapper(new RuntimeException("I failed!"));
+	}
+}