/*
|
* Copyright (C) 2018 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
package com.android.launcher3.util;
|
|
/**
|
* Event tracker for reliably reproducing race conditions in tests.
|
* The app should call onEvent() for events that the test will try to reproduce in all possible
|
* orders.
|
*/
|
public class RaceConditionTracker {
|
public final static boolean ENTER = true;
|
public final static boolean EXIT = false;
|
static final String ENTER_POSTFIX = "enter";
|
static final String EXIT_POSTFIX = "exit";
|
|
public interface EventProcessor {
|
void onEvent(String eventName);
|
}
|
|
private static EventProcessor sEventProcessor;
|
|
static void setEventProcessor(EventProcessor eventProcessor) {
|
sEventProcessor = eventProcessor;
|
}
|
|
public static void onEvent(String eventName) {
|
if (sEventProcessor != null) sEventProcessor.onEvent(eventName);
|
}
|
|
public static void onEvent(String eventName, boolean isEnter) {
|
if (sEventProcessor != null) {
|
sEventProcessor.onEvent(enterExitEvt(eventName, isEnter));
|
}
|
}
|
|
public static String enterExitEvt(String eventName, boolean isEnter) {
|
return eventName + ":" + (isEnter ? ENTER_POSTFIX : EXIT_POSTFIX);
|
}
|
|
public static String enterEvt(String eventName) {
|
return enterExitEvt(eventName, ENTER);
|
}
|
|
public static String exitEvt(String eventName) {
|
return enterExitEvt(eventName, EXIT);
|
}
|
}
|
