Android example source code file (ActivityManagerTest.java)

This example Android source code file (ActivityManagerTest.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

activitymanager, activitymanagertest, android, androidtestcase, app, application, configurationinfo, content, context, exception, override, smalltest, suppress, test, util

The ActivityManagerTest.java Android example source code

/*
 * Copyright (C) 2008 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.app.activity;

import android.app.ActivityManager;
import android.content.Context;
import android.content.pm.ConfigurationInfo;
import android.content.res.Configuration;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import android.test.suitebuilder.annotation.Suppress;

import java.util.Iterator;
import java.util.List;

public class ActivityManagerTest extends AndroidTestCase {

    protected Context mContext;
    protected ActivityManager mActivityManager;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mContext = getContext();
        mActivityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
    }

    // TODO should write a test for getRecentTasks()
    // TODO should write a test for getRunningTasks()
    // TODO should write a test for getMemoryInfo()
    
    // TODO: Find a way to re-enable this.  It fails if any other app has failed during startup.
    // This is probably an OK assumption given the desired system status when we run unit tests,
    // but it's not necessarily the right assumption for a unit test.
    @Suppress
    public void disabledTestErrorTasksEmpty() throws Exception {
        
        List<ActivityManager.ProcessErrorStateInfo> errList;
        
        errList = mActivityManager.getProcessesInErrorState();
        
        // test: confirm list is empty
        assertNull(errList);
    }
    
    // TODO: Force an activity into an error state - then see if we can catch it here?
    @SmallTest
    public void testErrorTasksWithError() throws Exception {
        
        List<ActivityManager.ProcessErrorStateInfo> errList;
        
        // TODO force another process into an error condition.  How?
        
        // test: confirm error list length is at least 1 under varying query lengths
//      checkErrorListMax(1,-1);

        errList = mActivityManager.getProcessesInErrorState();

        // test: the list itself is healthy
        checkErrorListSanity(errList);

        // test: confirm our application shows up in the list
    }
    
    // TODO: Force an activity into an ANR state - then see if we can catch it here?
    @SmallTest
    public void testErrorTasksWithANR() throws Exception {
        
        List<ActivityManager.ProcessErrorStateInfo> errList;
        
        // TODO: force an application into an ANR state
        
        errList = mActivityManager.getProcessesInErrorState();

        // test: the list itself is healthy
        checkErrorListSanity(errList);

        // test: confirm our ANR'ing application shows up in the list
    }
    
    @SmallTest
    public void testGetDeviceConfigurationInfo() throws Exception {
        ConfigurationInfo config = mActivityManager.getDeviceConfigurationInfo();
        assertNotNull(config);
        // Validate values against configuration retrieved from resources
        Configuration vconfig = mContext.getResources().getConfiguration();
        assertNotNull(vconfig);
        assertEquals(config.reqKeyboardType, vconfig.keyboard);
        assertEquals(config.reqTouchScreen, vconfig.touchscreen);
        assertEquals(config.reqNavigation, vconfig.navigation);
        if (vconfig.navigation == Configuration.NAVIGATION_NONAV) {
            assertNotNull(config.reqInputFeatures & ConfigurationInfo.INPUT_FEATURE_FIVE_WAY_NAV);
        }
        if (vconfig.keyboard != Configuration.KEYBOARD_UNDEFINED) {
            assertNotNull(config.reqInputFeatures & ConfigurationInfo.INPUT_FEATURE_HARD_KEYBOARD);
        }    
    }
    
    // If any entries in appear in the list, sanity check them against all running applications
    private void checkErrorListSanity(List<ActivityManager.ProcessErrorStateInfo> errList) {
        if (errList == null) return;
        
        Iterator<ActivityManager.ProcessErrorStateInfo> iter = errList.iterator();
        while (iter.hasNext()) {
            ActivityManager.ProcessErrorStateInfo info = iter.next();
            assertNotNull(info);
            // sanity checks
            assertTrue((info.condition == ActivityManager.ProcessErrorStateInfo.CRASHED) ||
                       (info.condition == ActivityManager.ProcessErrorStateInfo.NOT_RESPONDING));
            // TODO look at each of these and consider a stronger test
            // TODO can we cross-check at the process name via some other API?
            // TODO is there a better test for strings, e.g. "assertIsLegalString")
            assertNotNull(info.processName);
            // reasonableness test for info.pid ?
            assertNotNull(info.longMsg);
            assertNotNull(info.shortMsg);
            // is there any reasonable test for the crashData?  Probably not. 
        }
    }
}