/*
* Copyright 2011 Google Inc.
*
* 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.google.gwt.core.client.prefetch;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.RepeatingCommand;
import com.google.gwt.junit.client.GWTTestCase;
/**
* Exercises isLoaded() method in {@link RunAsyncCode}
*/
public class RunAsyncCodeTest extends GWTTestCase {
/**
* Used as a label for GWT.runAsync() call.
*/
public static class IsLoadedMarker {
}
/**
* Used as a label for GWT.runAsync() call.
*/
public static class TestPrefetchMarker {
}
public static final int ASYNC_DELAY_MSEC = 10000;
// Used to cancel the repeating timer in testPrefetch()
boolean cancelPrefetchTest = false;
@Override
public String getModuleName() {
return "com.google.gwt.core.Core";
}
@Override
public void gwtTearDown() {
cancelPrefetchTest = true;
}
/**
* Checks the return of isLoaded() to make sure it returns
* <code>false</false> for a yet to be referenced split point and <code>true</code>
* after onSuccess is called.
*/
public void testIsLoaded() {
// This test is not applicable to DevMode
if (!GWT.isScript()) {
return;
}
delayTestFinish(ASYNC_DELAY_MSEC);
final RunAsyncCode prefetchSplitPoint = RunAsyncCode.runAsyncCode(IsLoadedMarker.class);
assertFalse(prefetchSplitPoint.isLoaded());
GWT.runAsync(IsLoadedMarker.class, new RunAsyncCallback() {
@Override
public void onFailure(Throwable reason) {
fail("runAsync() call failed.");
}
@Override
public void onSuccess() {
assertTrue(prefetchSplitPoint.isLoaded());
finishTest();
}
});
}
/**
* Make a call to {@link Prefetcher} to prefetch a split point and wait for it
* to be loaded before invoking it.
*/
public void testPrefetch() {
cancelPrefetchTest = false;
// This test is not applicable to DevMode
if (!GWT.isScript()) {
return;
}
delayTestFinish(ASYNC_DELAY_MSEC);
final RunAsyncCode prefetchSplitPoint = RunAsyncCode.runAsyncCode(TestPrefetchMarker.class);
Prefetcher.prefetch(prefetchSplitPoint);
assertFalse(prefetchSplitPoint.isLoaded());
Prefetcher.start();
Scheduler.get().scheduleFixedDelay(new RepeatingCommand() {
@Override
public boolean execute() {
// gwtTearDown() will set this flag to stop the repeating timer if
// the test case is already finished due to a timeout.
if (cancelPrefetchTest) {
return false;
}
if (prefetchSplitPoint.isLoaded()) {
GWT.runAsync(TestPrefetchMarker.class, new RunAsyncCallback() {
@Override
public void onFailure(Throwable reason) {
fail("runAsync call failed.");
}
@Override
public void onSuccess() {
finishTest();
}
});
return false;
}
return true;
}
}, 50);
}
}