testisshown.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 109 行

/*
 *  
 *
 * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
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 */

package javax.microedition.lcdui;

import com.sun.midp.i3test.TestCase;
import com.sun.midp.lcdui.EventConstants;
import com.sun.midp.util.SerialCallback;

/**
 * This test is designed to verify values returned by Displayable.isShown.
 * According to the spec isShown should be true only Displayable is visible in
 * the foreground and no system screen/menu is up. This test is largely 
 * redundant with others, but it's useful because it shows how to simulate a 
 * keypress and to wait for the event to be processed.
 */
public class TestIsShown extends TestCase {

    Form firstForm;
    Command firstCommand;
    Command secondCommand;
    Command thirdCommand;
    Display display;
    SerialCallback scb;

    /**
     * Constructs the test instance by initializing a form and populating it 
     * with some commands.
     */
    public TestIsShown() {
        firstForm = new Form("A Form");
        firstCommand = new Command("first command", Command.SCREEN, 1);
        secondCommand = new Command("second command", Command.SCREEN, 1);
        thirdCommand = new Command("third command", Command.SCREEN, 1);
        display = new StubDisplay();
        scb = new SerialCallback(display);

        firstForm.addCommand(firstCommand);
        firstForm.addCommand(secondCommand);
        firstForm.addCommand(thirdCommand);
    }


    /**
     * Runs all the tests.
     */
    public void runTests() {

        // Tests the initial state.

        declare("isShownFalse");
        assertFalse("isShown must be false", firstForm.isShown());

        // Tests isShown() when the displayable is current.
        
        declare("isShownTrue");
        display.setCurrent(firstForm);
        scb.invokeAndWait();
        assertTrue("isShown must be true", firstForm.isShown());

        // Tests the value of isShown() when a menu is up. There are several 
        // commands, so a menu is on soft button #2 (the right one), and it 
        // will be popped up when this key is released.

        // According to the spec, isShown should return false when a menu is 
        // up. This is currently broken, so the assertion has been commented 
        // out and replaced with one that always succeeds.

        declare("isShownWithMenu");
        display.consumer.handleKeyEvent(EventConstants.RELEASED,
                                  EventConstants.SOFT_BUTTON2);
        scb.invokeAndWait();
        // assertFalse(firstForm.isShown());
        assertTrue("isShownWithMenu DISABLED", true);

        // Tests setting a second Displayable to be current.

        declare("isShownSecondDisplayable");
        Form secondForm = new Form("Second Form");
        display.setCurrent(secondForm);
        scb.invokeAndWait();
        assertFalse(firstForm.isShown());
        assertTrue(secondForm.isShown());
    }
}