Android example source code file (BroadcasterTest.java)

This example Android source code file (BroadcasterTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, broadcaster, broadcastertest, exception, handler, handlertester, mediumtest, message, message_a, message_b, message_c, message_d, os, test, testcase, tests2and3

The BroadcasterTest.java Android example source code

/*
 * Copyright (C) 2007 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 android.os;

import android.os.Broadcaster;
import android.os.Handler;
import android.os.Message;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.SmallTest;
import junit.framework.TestCase;

public class BroadcasterTest extends TestCase {
    private static final int MESSAGE_A = 23234;
    private static final int MESSAGE_B = 3;
    private static final int MESSAGE_C = 14;
    private static final int MESSAGE_D = 95;

    @MediumTest
    public void test1() throws Exception {
        /*
        * One handler requestes one message, with a translation
        */
        HandlerTester tester = new HandlerTester() {
            Handler h;

            public void go() {
                Broadcaster b = new Broadcaster();
                h = new H();

                b.request(MESSAGE_A, h, MESSAGE_B);

                Message msg = new Message();
                msg.what = MESSAGE_A;

                b.broadcast(msg);
            }

            public void handleMessage(Message msg) {
                if (msg.what == MESSAGE_B) {
                    success();
                } else {
                    failure();
                }
            }
        };
        tester.doTest(1000);
    }

    private static class Tests2and3 extends HandlerTester {
        Tests2and3(int n) {
            N = n;
        }

        int N;
        Handler mHandlers[];
        boolean mSuccess[];

        public void go() {
            Broadcaster b = new Broadcaster();
            mHandlers = new Handler[N];
            mSuccess = new boolean[N];
            for (int i = 0; i < N; i++) {
                mHandlers[i] = new H();
                mSuccess[i] = false;
                b.request(MESSAGE_A, mHandlers[i], MESSAGE_B + i);
            }

            Message msg = new Message();
            msg.what = MESSAGE_A;

            b.broadcast(msg);
        }

        public void handleMessage(Message msg) {
            int index = msg.what - MESSAGE_B;
            if (index < 0 || index >= N) {
                failure();
            } else {
                if (msg.getTarget() == mHandlers[index]) {
                    mSuccess[index] = true;
                }
            }
            boolean winner = true;
            for (int i = 0; i < N; i++) {
                if (!mSuccess[i]) {
                    winner = false;
                }
            }
            if (winner) {
                success();
            }
        }
    }

    @MediumTest
    public void test2() throws Exception {
        /*
        * 2 handlers request the same message, with different translations
        */
        HandlerTester tester = new Tests2and3(2);
        tester.doTest(1000);
    }

    @MediumTest
    public void test3() throws Exception {
        /*
        * 1000 handlers request the same message, with different translations
        */
        HandlerTester tester = new Tests2and3(10);
        tester.doTest(1000);
    }

    @MediumTest
    public void test4() throws Exception {
        /*
        * Two handlers request different messages, with translations, sending
        * only one.  The other one should never get sent.
        */
        HandlerTester tester = new HandlerTester() {
            Handler h1;
            Handler h2;

            public void go() {
                Broadcaster b = new Broadcaster();
                h1 = new H();
                h2 = new H();

                b.request(MESSAGE_A, h1, MESSAGE_C);
                b.request(MESSAGE_B, h2, MESSAGE_D);

                Message msg = new Message();
                msg.what = MESSAGE_A;

                b.broadcast(msg);
            }

            public void handleMessage(Message msg) {
                if (msg.what == MESSAGE_C && msg.getTarget() == h1) {
                    success();
                } else {
                    failure();
                }
            }
        };
        tester.doTest(1000);
    }

    @MediumTest
    public void test5() throws Exception {
        /*
        * Two handlers request different messages, with translations, sending
        * only one.  The other one should never get sent.
        */
        HandlerTester tester = new HandlerTester() {
            Handler h1;
            Handler h2;

            public void go() {
                Broadcaster b = new Broadcaster();
                h1 = new H();
                h2 = new H();

                b.request(MESSAGE_A, h1, MESSAGE_C);
                b.request(MESSAGE_B, h2, MESSAGE_D);

                Message msg = new Message();
                msg.what = MESSAGE_B;

                b.broadcast(msg);
            }

            public void handleMessage(Message msg) {
                if (msg.what == MESSAGE_D && msg.getTarget() == h2) {
                    success();
                } else {
                    failure();
                }
            }
        };
        tester.doTest(1000);
    }

    @MediumTest
    public void test6() throws Exception {
        /*
        * Two handlers request same message. Cancel the request for the
        * 2nd handler, make sure the first still works.
        */
        HandlerTester tester = new HandlerTester() {
            Handler h1;
            Handler h2;

            public void go() {
                Broadcaster b = new Broadcaster();
                h1 = new H();
                h2 = new H();

                b.request(MESSAGE_A, h1, MESSAGE_C);
                b.request(MESSAGE_A, h2, MESSAGE_D);
                b.cancelRequest(MESSAGE_A, h2, MESSAGE_D);

                Message msg = new Message();
                msg.what = MESSAGE_A;

                b.broadcast(msg);
            }

            public void handleMessage(Message msg) {
                if (msg.what == MESSAGE_C && msg.getTarget() == h1) {
                    success();
                } else {
                    failure();
                }
            }
        };
        tester.doTest(1000);
    }
}