| /* |
| * Copyright (C) 2017 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 com.android.server.wifi; |
| |
| import static org.mockito.Mockito.*; |
| import static org.mockito.MockitoAnnotations.*; |
| |
| import android.content.Context; |
| |
| import androidx.test.filters.SmallTest; |
| |
| import com.android.wifi.resources.R; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.mockito.Mock; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * Unit tests for {@link com.android.server.wifi.SelfRecovery}. |
| */ |
| @SmallTest |
| public class SelfRecoveryTest extends WifiBaseTest { |
| private static final int DEFAULT_MAX_RECOVERY_PER_HOUR = 2; |
| SelfRecovery mSelfRecovery; |
| MockResources mResources; |
| @Mock Context mContext; |
| @Mock ActiveModeWarden mActiveModeWarden; |
| @Mock Clock mClock; |
| @Mock WifiNative mWifiNative; |
| |
| @Before |
| public void setUp() throws Exception { |
| initMocks(this); |
| mResources = new MockResources(); |
| // Default value of 2 recovery per hour. |
| mResources.setInteger(R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour, |
| DEFAULT_MAX_RECOVERY_PER_HOUR); |
| when(mContext.getResources()).thenReturn(mResources); |
| mSelfRecovery = new SelfRecovery(mContext, mActiveModeWarden, mClock, mWifiNative); |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} with valid reasons will send |
| * the restart message to {@link ActiveModeWarden}. |
| */ |
| @Test |
| public void testValidTriggerReasonsSendMessageToWifiController() { |
| mSelfRecovery.trigger(SelfRecovery.REASON_LAST_RESORT_WATCHDOG); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_LAST_RESORT_WATCHDOG, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_LAST_RESORT_WATCHDOG], false); |
| reset(mActiveModeWarden); |
| |
| when(mClock.getElapsedSinceBootMillis()) |
| .thenReturn(TimeUnit.HOURS.toMillis(1) + 1); |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| reset(mActiveModeWarden); |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} with invalid reasons will not |
| * send the restart message to {@link ActiveModeWarden}. |
| */ |
| @Test |
| public void testInvalidTriggerReasonsDoesNotSendMessageToWifiController() { |
| mSelfRecovery.trigger(-1); |
| verifyNoMoreInteractions(mActiveModeWarden); |
| |
| mSelfRecovery.trigger(8); |
| verifyNoMoreInteractions(mActiveModeWarden); |
| } |
| |
| /** |
| * Verifies that a STA interface down event will trigger WifiController to disable wifi. |
| */ |
| @Test |
| public void testStaIfaceDownDisablesWifi() { |
| mSelfRecovery.trigger(SelfRecovery.REASON_STA_IFACE_DOWN); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} for REASON_WIFI_NATIVE |
| * are limited to {@link R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour} in a |
| * 1 hour time window. |
| */ |
| @Test |
| public void testTimeWindowLimiting_typicalUse() { |
| when(mClock.getElapsedSinceBootMillis()).thenReturn(0L); |
| // Fill up the SelfRecovery's restart time window buffer, ensure all the restart triggers |
| // aren't ignored |
| for (int i = 0; i < DEFAULT_MAX_RECOVERY_PER_HOUR; i++) { |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| reset(mActiveModeWarden); |
| } |
| |
| // Verify that further attempts to trigger restarts disable wifi |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden, never()).recoveryRestartWifi( |
| SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| reset(mActiveModeWarden); |
| |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden, never()).recoveryRestartWifi( |
| SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| reset(mActiveModeWarden); |
| |
| // Verify L.R.Watchdog can still restart things (It has its own complex limiter) |
| mSelfRecovery.trigger(SelfRecovery.REASON_LAST_RESORT_WATCHDOG); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_LAST_RESORT_WATCHDOG, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_LAST_RESORT_WATCHDOG], false); |
| reset(mActiveModeWarden); |
| |
| // Verify Sta Interface Down will still disable wifi |
| mSelfRecovery.trigger(SelfRecovery.REASON_STA_IFACE_DOWN); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| reset(mActiveModeWarden); |
| |
| // now TRAVEL FORWARDS IN TIME and ensure that more restarts can occur |
| when(mClock.getElapsedSinceBootMillis()) |
| .thenReturn(TimeUnit.HOURS.toMillis(1) + 1); |
| mSelfRecovery.trigger(SelfRecovery.REASON_LAST_RESORT_WATCHDOG); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_LAST_RESORT_WATCHDOG, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_LAST_RESORT_WATCHDOG], false); |
| reset(mActiveModeWarden); |
| |
| when(mClock.getElapsedSinceBootMillis()) |
| .thenReturn(TimeUnit.HOURS.toMillis(1) + 1); |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| reset(mActiveModeWarden); |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} for REASON_WIFI_NATIVE |
| * does not trigger recovery if {@link R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour} |
| * is set to 0 |
| */ |
| @Test |
| public void testTimeWindowLimiting_NativeFailureOff() { |
| when(mClock.getElapsedSinceBootMillis()).thenReturn(0L); |
| mResources.setInteger(R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour, 0); |
| mSelfRecovery.trigger(SelfRecovery.REASON_WIFINATIVE_FAILURE); |
| verify(mActiveModeWarden, never()).recoveryRestartWifi( |
| SelfRecovery.REASON_WIFINATIVE_FAILURE, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_WIFINATIVE_FAILURE], true); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| reset(mActiveModeWarden); |
| |
| // Verify L.R.Watchdog can still restart things (It has its own complex limiter) |
| mSelfRecovery.trigger(SelfRecovery.REASON_LAST_RESORT_WATCHDOG); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_LAST_RESORT_WATCHDOG, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_LAST_RESORT_WATCHDOG], false); |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} for |
| * REASON_LAST_RESORT_WATCHDOG are NOT limited to |
| * {{@link R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour} in a 1 hour time window. |
| */ |
| @Test |
| public void testTimeWindowLimiting_lastResortWatchdog_noEffect() { |
| for (int i = 0; i < DEFAULT_MAX_RECOVERY_PER_HOUR * 2; i++) { |
| // Verify L.R.Watchdog can still restart things (It has it's own complex limiter) |
| mSelfRecovery.trigger(SelfRecovery.REASON_LAST_RESORT_WATCHDOG); |
| verify(mActiveModeWarden).recoveryRestartWifi(SelfRecovery.REASON_LAST_RESORT_WATCHDOG, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_LAST_RESORT_WATCHDOG], false); |
| reset(mActiveModeWarden); |
| } |
| } |
| |
| /** |
| * Verifies that invocations of {@link SelfRecovery#trigger(int)} for |
| * REASON_STA_IFACE_DOWN are NOT limited to |
| * {{@link R.integer.config_wifiMaxNativeFailureSelfRecoveryPerHour} in a 1 hour time window. |
| */ |
| @Test |
| public void testTimeWindowLimiting_staIfaceDown_noEffect() { |
| for (int i = 0; i < DEFAULT_MAX_RECOVERY_PER_HOUR * 2; i++) { |
| mSelfRecovery.trigger(SelfRecovery.REASON_STA_IFACE_DOWN); |
| verify(mActiveModeWarden).recoveryDisableWifi(); |
| verify(mActiveModeWarden, never()).recoveryRestartWifi( |
| SelfRecovery.REASON_STA_IFACE_DOWN, |
| SelfRecovery.REASON_STRINGS[SelfRecovery.REASON_STA_IFACE_DOWN], true); |
| reset(mActiveModeWarden); |
| } |
| } |
| } |