Android example source code file (ObserverNodeTest.java)

This example Android source code file (ObserverNodeTest.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, androidtestcase, arraylist, contentobserver, handler, internet, net, network, observernode, observernodetest, os, test, testobserver, uri

The ObserverNodeTest.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.content;

import java.util.ArrayList;

import android.content.ContentService.ObserverCall;
import android.content.ContentService.ObserverNode;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.test.AndroidTestCase;

public class ObserverNodeTest extends AndroidTestCase {
    static class TestObserver  extends ContentObserver {
        public TestObserver() {
            super(new Handler());
        }
    }

    public void testUri() {
        ObserverNode root = new ObserverNode("");
        Uri[] uris = new Uri[] {
            Uri.parse("content://c/a/"),
            Uri.parse("content://c/"),
            Uri.parse("content://x/"),
            Uri.parse("content://c/b/"),
            Uri.parse("content://c/a/a1/1/"),
            Uri.parse("content://c/a/a1/2/"),
            Uri.parse("content://c/b/1/"),
            Uri.parse("content://c/b/2/"),
        };

        int[] nums = new int[] {4, 7, 1, 4, 2, 2, 3, 3};

        // special case
        root.addObserverLocked(uris[0], new TestObserver().getContentObserver(), false, root);
        for(int i = 1; i < uris.length; i++) {
            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), true, root);
        }

        ArrayList<ObserverCall> calls = new ArrayList();

        for (int i = nums.length - 1; i >=0; --i) {
            root.collectObserversLocked(uris[i], 0, null, false, calls);
            assertEquals(nums[i], calls.size());
            calls.clear();
        }
    }

    public void testUriNotNotify() {
        ObserverNode root = new ObserverNode("");
        Uri[] uris = new Uri[] {
            Uri.parse("content://c/"),
            Uri.parse("content://x/"),
            Uri.parse("content://c/a/"),
            Uri.parse("content://c/b/"),
            Uri.parse("content://c/a/1/"),
            Uri.parse("content://c/a/2/"),
            Uri.parse("content://c/b/1/"),
            Uri.parse("content://c/b/2/"),
        };
        int[] nums = new int[] {7, 1, 3, 3, 1, 1, 1, 1};

        for(int i = 0; i < uris.length; i++) {
            root.addObserverLocked(uris[i], new TestObserver().getContentObserver(), false, root);
        }

        ArrayList<ObserverCall> calls = new ArrayList();

        for (int i = uris.length - 1; i >=0; --i) {
            root.collectObserversLocked(uris[i], 0, null, false, calls);
            assertEquals(nums[i], calls.size());
            calls.clear();
        }
    }
}