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Add tests for app update notifications #231

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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,6 @@
import android.net.Uri;
import android.os.Build;

import androidx.annotation.RequiresApi;
import androidx.core.app.NotificationCompat;

import com.d4rk.androidtutorials.java.R;
Expand All @@ -19,6 +18,8 @@
import com.google.android.play.core.install.model.AppUpdateType;
import com.google.android.play.core.install.model.UpdateAvailability;

import java.util.function.IntSupplier;

/**
* Utility class for managing app update notifications.
*
Expand All @@ -28,11 +29,17 @@
public class AppUpdateNotificationsManager {

private final Context context;
private final IntSupplier sdkIntSupplier;
private final String updateChannelId = "update_channel";
private final int updateNotificationId = 0;

public AppUpdateNotificationsManager(Context context) {
this(context, () -> Build.VERSION.SDK_INT);
}

AppUpdateNotificationsManager(Context context, IntSupplier sdkIntSupplier) {
this.context = context;
this.sdkIntSupplier = sdkIntSupplier;
Comment on lines 31 to +42
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@chatgpt-codex-connector chatgpt-codex-connector bot Sep 16, 2025

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[P1] Avoid API‐24 java.util.function dependency in manager constructor

The new sdkIntSupplier field introduces java.util.function.IntSupplier. That type only exists on Android API 24+ (or when core library desugaring is configured), yet the app’s minSdk is 23 and no desugaring dependency is declared in app/build.gradle. When AppUpdateNotificationsManager is loaded on API 23 devices (e.g., from MainActivity), the VM will fail with NoClassDefFoundError: java/util/function/IntSupplier, crashing update notification checks on those devices. Passing the SDK value as an int or using a project-defined interface avoids raising the effective minSdk.

Useful? React with 👍 / 👎.

}

/**
Expand All @@ -43,7 +50,6 @@ public AppUpdateNotificationsManager(Context context) {
* to update the app via the Play Store. The notification includes a deep link to the app's
* Play Store listing.
*/
@RequiresApi(api = Build.VERSION_CODES.O)
public void checkAndSendUpdateNotification() {
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Expand All @@ -53,12 +59,14 @@ public void checkAndSendUpdateNotification() {
appUpdateInfo -> {
if (appUpdateInfo.updateAvailability() == UpdateAvailability.UPDATE_AVAILABLE &&
appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.FLEXIBLE)) {
NotificationChannel updateChannel = new NotificationChannel(
updateChannelId,
context.getString(R.string.update_notifications),
NotificationManager.IMPORTANCE_HIGH
);
notificationManager.createNotificationChannel(updateChannel);
if (sdkIntSupplier.getAsInt() >= Build.VERSION_CODES.O) {
NotificationChannel updateChannel = new NotificationChannel(
updateChannelId,
context.getString(R.string.update_notifications),
NotificationManager.IMPORTANCE_HIGH
);
notificationManager.createNotificationChannel(updateChannel);
}
NotificationCompat.Builder updateBuilder = new NotificationCompat.Builder(context, updateChannelId)
.setSmallIcon(R.drawable.ic_notification_update)
.setContentTitle(context.getString(R.string.notification_update_title))
Expand Down
View file Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,173 @@
package com.d4rk.androidtutorials.java.notifications.managers;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.ArgumentMatchers.same;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;

import androidx.core.app.NotificationCompat;

import com.d4rk.androidtutorials.java.R;
import com.google.android.gms.tasks.Tasks;
import com.google.android.play.core.appupdate.AppUpdateInfo;
import com.google.android.play.core.appupdate.AppUpdateManager;
import com.google.android.play.core.appupdate.AppUpdateManagerFactory;
import com.google.android.play.core.install.model.AppUpdateType;
import com.google.android.play.core.install.model.UpdateAvailability;

import org.junit.Before;
import org.junit.Test;
import org.mockito.MockedConstruction;
import org.mockito.MockedStatic;
import org.mockito.Mockito;

import java.util.List;
import java.util.concurrent.atomic.AtomicReference;

public class AppUpdateNotificationsManagerTest {

private static final String PACKAGE_NAME = "com.d4rk.androidtutorials.java";

private Context context;
private NotificationManager notificationManager;
private AppUpdateManager appUpdateManager;
private AppUpdateInfo appUpdateInfo;

@Before
public void setUp() {
context = mock(Context.class);
notificationManager = mock(NotificationManager.class);
when(context.getSystemService(Context.NOTIFICATION_SERVICE)).thenReturn(notificationManager);
when(context.getString(R.string.update_notifications)).thenReturn("Update notifications");
when(context.getString(R.string.notification_update_title)).thenReturn("Update available");
when(context.getString(R.string.summary_notification_update)).thenReturn("An update is ready");
when(context.getPackageName()).thenReturn(PACKAGE_NAME);

appUpdateManager = mock(AppUpdateManager.class);
appUpdateInfo = mock(AppUpdateInfo.class);
}

@Test
public void checkAndSendUpdateNotification_whenFlexibleUpdateAvailable_sendsPlayStoreNotification() {
when(appUpdateInfo.updateAvailability()).thenReturn(UpdateAvailability.UPDATE_AVAILABLE);
when(appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.FLEXIBLE)).thenReturn(true);
when(appUpdateManager.getAppUpdateInfo()).thenReturn(Tasks.forResult(appUpdateInfo));

PendingIntent pendingIntent = mock(PendingIntent.class);
Notification notification = new Notification();
AtomicReference<Intent> capturedIntent = new AtomicReference<>();

try (MockedStatic<AppUpdateManagerFactory> updateManagerFactory = Mockito.mockStatic(AppUpdateManagerFactory.class);
MockedStatic<PendingIntent> pendingIntentMock = Mockito.mockStatic(PendingIntent.class);
MockedConstruction<NotificationCompat.Builder> builderConstruction = mockNotificationBuilder(notification)) {

updateManagerFactory.when(() -> AppUpdateManagerFactory.create(context)).thenReturn(appUpdateManager);

pendingIntentMock
.when(() -> PendingIntent.getActivity(eq(context), eq(0), any(Intent.class), eq(PendingIntent.FLAG_IMMUTABLE)))
.thenAnswer(invocation -> {
Intent intent = invocation.getArgument(2);
capturedIntent.set(intent);
return pendingIntent;
});

AppUpdateNotificationsManager manager = new AppUpdateNotificationsManager(context, () -> Build.VERSION_CODES.O);
manager.checkAndSendUpdateNotification();

List<NotificationCompat.Builder> builders = builderConstruction.constructed();
assertEquals(1, builders.size());
NotificationCompat.Builder builder = builders.get(0);
verify(builder).setContentIntent(pendingIntent);

verify(notificationManager).createNotificationChannel(any(NotificationChannel.class));
verify(notificationManager).notify(eq(0), same(notification));

Intent launchIntent = capturedIntent.get();
assertNotNull(launchIntent);
assertEquals(Intent.ACTION_VIEW, launchIntent.getAction());
assertEquals(Uri.parse("market://details?id=" + PACKAGE_NAME), launchIntent.getData());
}
}

@Test
public void checkAndSendUpdateNotification_whenUpdateUnavailable_doesNotSendNotification() {
when(appUpdateInfo.updateAvailability()).thenReturn(UpdateAvailability.UPDATE_NOT_AVAILABLE);
when(appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.FLEXIBLE)).thenReturn(false);
when(appUpdateManager.getAppUpdateInfo()).thenReturn(Tasks.forResult(appUpdateInfo));

Notification notification = new Notification();

try (MockedStatic<AppUpdateManagerFactory> updateManagerFactory = Mockito.mockStatic(AppUpdateManagerFactory.class);
MockedStatic<PendingIntent> pendingIntentMock = Mockito.mockStatic(PendingIntent.class);
MockedConstruction<NotificationCompat.Builder> builderConstruction = mockNotificationBuilder(notification)) {

updateManagerFactory.when(() -> AppUpdateManagerFactory.create(context)).thenReturn(appUpdateManager);

AppUpdateNotificationsManager manager = new AppUpdateNotificationsManager(context, () -> Build.VERSION_CODES.O);
manager.checkAndSendUpdateNotification();

verify(notificationManager, never()).createNotificationChannel(any(NotificationChannel.class));
verify(notificationManager, never()).notify(anyInt(), any(Notification.class));
assertTrue(builderConstruction.constructed().isEmpty());
pendingIntentMock.verifyNoInteractions();
}
}

@Test
public void checkAndSendUpdateNotification_createsChannelOnlyOnOreoOrHigher() {
when(appUpdateInfo.updateAvailability()).thenReturn(UpdateAvailability.UPDATE_AVAILABLE);
when(appUpdateInfo.isUpdateTypeAllowed(AppUpdateType.FLEXIBLE)).thenReturn(true);
when(appUpdateManager.getAppUpdateInfo()).thenReturn(Tasks.forResult(appUpdateInfo));

PendingIntent pendingIntent = mock(PendingIntent.class);
Notification notification = new Notification();

try (MockedStatic<AppUpdateManagerFactory> updateManagerFactory = Mockito.mockStatic(AppUpdateManagerFactory.class);
MockedStatic<PendingIntent> pendingIntentMock = Mockito.mockStatic(PendingIntent.class);
MockedConstruction<NotificationCompat.Builder> builderConstruction = mockNotificationBuilder(notification)) {

updateManagerFactory.when(() -> AppUpdateManagerFactory.create(context)).thenReturn(appUpdateManager);
pendingIntentMock.when(() -> PendingIntent.getActivity(eq(context), eq(0), any(Intent.class), eq(PendingIntent.FLAG_IMMUTABLE)))
.thenReturn(pendingIntent);

AppUpdateNotificationsManager manager = new AppUpdateNotificationsManager(context, () -> Build.VERSION_CODES.N_MR1);
manager.checkAndSendUpdateNotification();

verify(notificationManager, never()).createNotificationChannel(any(NotificationChannel.class));
verify(notificationManager).notify(eq(0), same(notification));

List<NotificationCompat.Builder> builders = builderConstruction.constructed();
assertEquals(1, builders.size());
verify(builders.get(0)).setContentIntent(pendingIntent);
}
}

private MockedConstruction<NotificationCompat.Builder> mockNotificationBuilder(Notification notification) {
return Mockito.mockConstruction(NotificationCompat.Builder.class, (mockBuilder, context) -> {
when(mockBuilder.setSmallIcon(anyInt())).thenReturn(mockBuilder);
when(mockBuilder.setContentTitle(anyString())).thenReturn(mockBuilder);
when(mockBuilder.setContentText(anyString())).thenReturn(mockBuilder);
when(mockBuilder.setAutoCancel(anyBoolean())).thenReturn(mockBuilder);
when(mockBuilder.setContentIntent(any(PendingIntent.class))).thenReturn(mockBuilder);
when(mockBuilder.build()).thenReturn(notification);
});
}
}
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