BrowserUtil_Test.java

/*******************************************************************************
 * Copyright (c) 2012, 2014 EclipseSource and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    EclipseSource - initial API and implementation
 ******************************************************************************/
package org.eclipse.rap.rwt.widgets;

import static org.eclipse.rap.rwt.internal.lifecycle.WidgetUtil.getId;
import static org.eclipse.rap.rwt.internal.protocol.RemoteObjectFactory.getRemoteObject;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

import org.eclipse.rap.json.JsonArray;
import org.eclipse.rap.json.JsonObject;
import org.eclipse.rap.rwt.testfixture.internal.Fixture;
import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.internal.browser.browserkit.BrowserOperationHandler;
import org.eclipse.swt.internal.widgets.IBrowserAdapter;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;


public class BrowserUtil_Test {

  private Browser browser;
  private BrowserCallback browserCallback;

  @Before
  public void setUp() {
    Fixture.setUp();
    Display display = new Display();
    Shell shell = new Shell( display );
    browser = new Browser( shell, SWT.NONE );
    getRemoteObject( browser ).setHandler( new BrowserOperationHandler( browser ) );
    browserCallback = mock( BrowserCallback.class );
  }

  @After
  public void tearDown() {
    Fixture.tearDown();
  }

  @Test
  public void testExecuteWithNullBrowser() {
    try {
      BrowserUtil.evaluate( null, "return true;", browserCallback );
      fail();
    } catch( NullPointerException expected ) {
    }
  }

  @Test
  public void testExecuteWithNullCallback() {
    try {
      BrowserUtil.evaluate( browser, "return true;", null );
      fail();
    } catch( NullPointerException expected ) {
    }
  }

  @Test
  public void testExecuteWithNullScript() {
    try {
      BrowserUtil.evaluate( browser, null, browserCallback );
      fail();
    } catch( NullPointerException expected ) {
    }
  }

  @Test
  public void testExecute() {
    BrowserUtil.evaluate( browser, "return true;", browserCallback );

    String expected = "(function(){return true;})();";
    assertEquals( expected, browser.getAdapter( IBrowserAdapter.class ).getExecuteScript() );
  }

  @Test( expected=IllegalStateException.class )
  public void testExecuteTwice() {
    BrowserUtil.evaluate( browser, "return true;", browserCallback );
    BrowserUtil.evaluate( browser, "return false;", browserCallback );
  }

  @Test
  public void testExecuteWithDisposedBrowser() {
    browser.dispose();

    try {
      BrowserUtil.evaluate( browser, "return true;", browserCallback );
      fail();
    } catch( Exception expected ) {
      assertEquals( "Widget is disposed", expected.getMessage() );
    }
  }

  @Test
  public void testCallCallback_Succeeded() {
    BrowserUtil.evaluate( browser, "return 5;", browserCallback );
    Fixture.fakeNewRequest();

    JsonObject parameters = new JsonObject().add( "result", new JsonArray().add( 5 ) );
    Fixture.fakeCallOperation( getId( browser ), "evaluationSucceeded", parameters );
    Fixture.readDataAndProcessAction( browser );

    verify( browserCallback ).evaluationSucceeded( Double.valueOf( 5 ) );
  }

  @Test
  public void testCallCallback_Failed() {
    BrowserUtil.evaluate( browser, "return 5/0;", browserCallback );
    Fixture.fakeNewRequest();

    JsonObject parameters = new JsonObject().add( "result", new JsonArray().add( 5 ) );
    Fixture.fakeCallOperation( getId( browser ), "evaluationFailed", parameters );
    Fixture.readDataAndProcessAction( browser );

    ArgumentCaptor<Exception> captor = ArgumentCaptor.forClass( Exception.class );
    verify( browserCallback ).evaluationFailed( captor.capture() );
    assertEquals( "Failed to evaluate Javascript expression", captor.getValue().getMessage() );
  }

}