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/*
* Copyright 2000-2013 Vaadin Ltd.
*
* 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.vaadin.tests.push;
import java.util.Timer;
import java.util.TimerTask;
import org.junit.Assert;
import org.junit.Test;
import org.openqa.selenium.WebElement;
import com.vaadin.annotations.Push;
import com.vaadin.data.util.ObjectProperty;
import com.vaadin.server.VaadinRequest;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.tests.components.AbstractTestUI;
import com.vaadin.tests.tb3.MultiBrowserTest;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Label;
@Push
public class BasicPush extends AbstractTestUI {
public static abstract class BasicPushTest extends MultiBrowserTest {
@Test
public void testPush() {
openTestURL();
// Test client initiated push
Assert.assertEquals(0, getClientCounter());
getIncrementButton().click();
Assert.assertEquals(
"Client counter not incremented by button click", 1,
getClientCounter());
getIncrementButton().click();
getIncrementButton().click();
getIncrementButton().click();
Assert.assertEquals(
"Four clicks should have incremented counter to 4", 4,
getClientCounter());
// Test server initiated push
getServerCounterStartButton().click();
try {
Assert.assertEquals(0, getServerCounter());
sleep(3000);
int serverCounter = getServerCounter();
if (serverCounter < 1) {
// No push has happened
Assert.fail("No push has occured within 3s");
}
sleep(3000);
if (getServerCounter() <= serverCounter) {
// No push has happened
Assert.fail("Only one push took place within 6s");
}
} finally {
// Avoid triggering push assertions
getServerCounterStopButton().click();
}
}
private int getServerCounter() {
return Integer.parseInt(getServerCounterElement().getText());
}
private int getClientCounter() {
return Integer.parseInt(getClientCounterElement().getText());
}
private WebElement getServerCounterElement() {
return vaadinElement("/VVerticalLayout[0]/Slot[1]/VVerticalLayout[0]/Slot[4]/VLabel[0]");
}
private WebElement getServerCounterStartButton() {
return vaadinElement("/VVerticalLayout[0]/Slot[1]/VVerticalLayout[0]/Slot[5]/VButton[0]/domChild[0]/domChild[0]");
}
private WebElement getServerCounterStopButton() {
return vaadinElement("/VVerticalLayout[0]/Slot[1]/VVerticalLayout[0]/Slot[6]/VButton[0]/domChild[0]/domChild[0]");
}
private WebElement getIncrementButton() {
return vaadinElement("/VVerticalLayout[0]/Slot[1]/VVerticalLayout[0]/Slot[2]/VButton[0]/domChild[0]/domChild[0]");
}
private WebElement getClientCounterElement() {
return vaadinElement("/VVerticalLayout[0]/Slot[1]/VVerticalLayout[0]/Slot[1]/VLabel[0]");
}
}
private ObjectProperty<Integer> counter = new ObjectProperty<Integer>(0);
private ObjectProperty<Integer> counter2 = new ObjectProperty<Integer>(0);
private final Timer timer = new Timer(true);
private TimerTask task;
@Override
protected void setup(VaadinRequest request) {
spacer();
/*
* Client initiated push.
*/
Label lbl = new Label(counter);
lbl.setCaption("Client counter (click 'increment' to update):");
addComponent(lbl);
addComponent(new Button("Increment", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
counter.setValue(counter.getValue() + 1);
}
}));
spacer();
/*
* Server initiated push.
*/
lbl = new Label(counter2);
lbl.setCaption("Server counter (updates each 3s by server thread) :");
addComponent(lbl);
addComponent(new Button("Start timer", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
counter2.setValue(0);
if (task != null) {
task.cancel();
}
task = new TimerTask() {
@Override
public void run() {
access(new Runnable() {
@Override
public void run() {
counter2.setValue(counter2.getValue() + 1);
}
});
}
};
timer.scheduleAtFixedRate(task, 3000, 3000);
}
}));
addComponent(new Button("Stop timer", new Button.ClickListener() {
@Override
public void buttonClick(ClickEvent event) {
if (task != null) {
task.cancel();
task = null;
}
}
}));
}
@Override
protected String getTestDescription() {
return "This test tests the very basic operations of push. "
+ "It tests that client initiated changes are "
+ "recieved back to the client as well as server "
+ "initiated changes are correctly updated to the client.";
}
@Override
protected Integer getTicketNumber() {
return 11494;
}
private void spacer() {
addComponent(new Label("<hr/>", ContentMode.HTML));
}
@Override
public void attach() {
super.attach();
}
@Override
public void detach() {
super.detach();
timer.cancel();
}
}
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