event-bus/event-bus-core/src/test/java/dev/kske/eventbus/core/NestedTest.java

74 lines
1.4 KiB
Java

package dev.kske.eventbus.core;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.*;
/**
* Tests nested event dispatches.
*
* @author Kai S. K. Engelbart
* @since 1.2.0
*/
class NestedTest {
EventBus bus;
boolean nestedHit;
/**
* Constructs an event bus and registers this test instance as an event listener.
*
* @since 1.2.0
*/
@BeforeEach
void registerListener() {
bus = new EventBus();
bus.registerListener(this);
}
/**
* Dispatches a simple event, which should in turn cause a string to be dispatched as a nested
* event. If the corresponding handler sets {@link #nestedHit} to {@code true}, the test is
* successful.
*
* @since 1.2.0
*/
@Test
void testNestedDispatch() {
bus.dispatch(new SimpleEvent());
assertTrue(nestedHit);
}
/**
* Dispatches a string as a nested event and cancels the current dispatch afterwards.
*
* @since 1.2.0
*/
@Event(SimpleEvent.class)
void onSimpleEvent() {
bus.dispatch("Nested event");
bus.cancel();
}
/**
* Sets {@link #nestedHit} to {@code true} indicating that nested dispatches work.
*
* @since 1.2.0
*/
@Event(String.class)
void onString() {
nestedHit = true;
}
/**
* Fails the test if an exception is caused during the dispatch.
*
* @param e the event containing the exception
* @since 1.2.0
*/
@Event
void onException(ExceptionEvent e) {
fail("Exception during dispatch", e.getCause());
}
}