Automatic timezone support on non-telephony devices

Adding to the Settings UI in order to simplify timezone on non-telephony devices.

Test: on-device testing, additional unit tests
Change-Id: I58ece9542a7b80823092bd082d4bd8c224b29634
Bug: 253015306

res/values/strings.xml

@@ -426,6 +426,8 @@
     <string name="date_time_auto">Set time automatically</string>
     <!-- Date & time setting screen setting switch title: whether the time zone should be determined automatically [CHAR LIMIT=100]  -->
     <string name="zone_auto_title">Set automatically</string>
+    <!-- Date & time setting screen setting switch summary for non-telephony devices [CHAR LIMIT=100] -->
+    <string name="auto_zone_requires_location_summary">Location will be used for setting the time zone when this toggle is on</string>
     <!-- Date & time setting screen setting option summary text for the automatic 24 hour setting checkbox [CHAR LIMIT=100] -->
     <string name="date_time_24hour_auto">Use locale default</string>
     <!-- Date & time setting screen setting check box title -->
@@ -2984,6 +2986,16 @@
 
     <!-- [CHAR LIMIT=60] Date&Time settings screen, toggle button title -->
     <string name="location_time_zone_detection_toggle_title">Use location</string>
+    <!-- [CHAR LIMIT=50] Date&Time settings screen, title of the dialog when AutoTimeZone is degraded -->
+    <string name="location_time_zone_detection_status_title">Cannot set the time zone automatically</string>
+    <!-- Date&Time settings screen, summary of the dialog when AutoTimeZone is degraded by settings-->
+    <string name="location_time_zone_detection_status_summary_degraded_by_settings" />
+    <!-- [CHAR LIMIT=60] Date&Time settings screen, summary of the dialog when AutoTimeZone is blocked by settings -->
+    <string name="location_time_zone_detection_status_summary_blocked_by_settings">Location or Location Services are off</string>
+    <!-- Date&Time settings screen, summary of the dialog when AutoTimeZone is blocked by the environment-->
+    <string name="location_time_zone_detection_status_summary_blocked_by_environment" />
+    <!-- Date&Time settings screen, summary of the dialog when AutoTimeZone is temporarily unavailable-->
+    <string name="location_time_zone_detection_status_summary_temporarily_unavailable" />
     <!-- [CHAR LIMIT=60] Date&Time settings screen, title of the dialog shown when user tries to
          enable GeoTZ when Location toggle is off. -->
     <string name="location_time_zone_detection_location_is_off_dialog_title">Device location needed</string>
@@ -2993,6 +3005,8 @@
     <!-- [CHAR LIMIT=30] Date&Time settings screen, button on a dialog shown when user tries to
     enable GeoTZ, but Location toggle is off, which leads to Location settings page. -->
     <string name="location_time_zone_detection_location_is_off_dialog_ok_button">Location settings</string>
+    <!-- [CHAR LIMIT=30] Date&Time settings screen, button on a dialog shown when the LTZP needs to be fixed -->
+    <string name="location_time_zone_provider_fix_dialog_ok_button">Fix this</string>
     <!-- [CHAR LIMIT=30] Date&Time settings screen, button on a dialog shown when user tries to
      enable GeoTZ, but Location toggle is off, which closes the dialog. -->
     <string name="location_time_zone_detection_location_is_off_dialog_cancel_button">Cancel</string>

res/xml/date_time_prefs.xml

@@ -47,6 +47,11 @@
             android:title="@string/zone_auto_title"
             settings:userRestriction="no_config_date_time"/>
 
+        <com.android.settingslib.widget.BannerMessagePreference
+            android:key="location_time_zone_detection_status"
+            android:title="@string/location_time_zone_detection_status_title"
+            settings:controller="com.android.settings.datetime.LocationProviderStatusPreferenceController"/>
+
         <!-- This preference gets removed if location-based time zone detection is not supported -->
         <SwitchPreference
             android:key="location_time_zone_detection"

src/com/android/settings/datetime/AutoTimeZonePreferenceController.java

@@ -29,8 +29,10 @@ import android.content.Context;
 
 import androidx.annotation.VisibleForTesting;
 import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
 import androidx.preference.SwitchPreference;
 
+import com.android.settings.R;
 import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settingslib.core.AbstractPreferenceController;
 
@@ -99,6 +101,25 @@ public class AutoTimeZonePreferenceController extends AbstractPreferenceControll
         return result;
     }
 
+    @Override
+    public CharSequence getSummary() {
+        // If auto time zone cannot enable telephony fallback and is capable of location, then auto
+        // time zone must use location.
+        if (LocationProviderStatusPreferenceController.hasLocationTimeZoneNoTelephonyFallback(
+                mTimeManager.getTimeZoneCapabilitiesAndConfig().getDetectorStatus())) {
+            return mContext.getResources().getString(R.string.auto_zone_requires_location_summary);
+        }
+        // If the user has a dedicated toggle to control location use, the summary can
+        // be empty because the use of location is explicit.
+        return "";
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        refreshSummary(screen.findPreference(getPreferenceKey()));
+    }
+
     @VisibleForTesting
     boolean isEnabled() {
         TimeZoneConfiguration config = getTimeZoneCapabilitiesAndConfig().getConfiguration();

src/com/android/settings/datetime/LocationProviderStatusPreferenceController.java

@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2022 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.settings.datetime;
+
+import android.app.time.DetectorStatusTypes;
+import android.app.time.LocationTimeZoneAlgorithmStatus;
+import android.app.time.TelephonyTimeZoneAlgorithmStatus;
+import android.app.time.TimeManager;
+import android.app.time.TimeZoneDetectorStatus;
+import android.content.Context;
+import android.location.LocationManager;
+import android.service.timezone.TimeZoneProviderStatus;
+import android.text.TextUtils;
+
+import androidx.annotation.Nullable;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.core.SubSettingLauncher;
+import com.android.settings.location.LocationSettings;
+import com.android.settingslib.widget.BannerMessagePreference;
+
+import java.util.concurrent.Executor;
+
+/**
+ * The controller for the "location time zone detection" entry in the Location settings
+ * screen.
+ */
+public class LocationProviderStatusPreferenceController
+        extends BasePreferenceController implements TimeManager.TimeZoneDetectorListener {
+    private final TimeManager mTimeManager;
+    private final LocationManager mLocationManager;
+
+    private BannerMessagePreference mPreference = null;
+
+    public LocationProviderStatusPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+        mTimeManager = context.getSystemService(TimeManager.class);
+        mLocationManager = context.getSystemService(LocationManager.class);
+
+        Executor mainExecutor = context.getMainExecutor();
+        mTimeManager.addTimeZoneDetectorListener(mainExecutor, this);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+        assert mPreference != null;
+        mPreference
+                .setPositiveButtonText(
+                        R.string.location_time_zone_provider_fix_dialog_ok_button)
+                .setPositiveButtonOnClickListener(v -> launchLocationSettings());
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        // Checks that the summary is non-empty as most status strings are optional. If a status
+        // string is empty, we ignore the status.
+        if (!TextUtils.isEmpty(getSummary())) {
+            return AVAILABLE_UNSEARCHABLE;
+        }
+        return CONDITIONALLY_UNAVAILABLE;
+    }
+
+    private void launchLocationSettings() {
+        new SubSettingLauncher(mContext)
+                .setDestination(LocationSettings.class.getName())
+                .setSourceMetricsCategory(getMetricsCategory())
+                .launch();
+    }
+
+    // Android has up to two location time zone providers (LTZPs) which can
+    // (optionally) report their status along several dimensions. Typically there is
+    // only one LTZP on a device, the primary. The UI here only reports status for one
+    // LTZP. This UI logic prioritizes the primary if there is a "bad" status for both.
+    @Nullable
+    private TimeZoneProviderStatus getLtzpStatus() {
+        LocationTimeZoneAlgorithmStatus status =
+                mTimeManager.getTimeZoneCapabilitiesAndConfig().getDetectorStatus()
+                        .getLocationTimeZoneAlgorithmStatus();
+        TimeZoneProviderStatus primary = status.getPrimaryProviderReportedStatus();
+        TimeZoneProviderStatus secondary = status.getSecondaryProviderReportedStatus();
+        if (primary == null && secondary == null) {
+            return null;
+        }
+
+        if (primary == null) {
+            return secondary;
+        } else if (secondary == null) {
+            return primary;
+        }
+
+        if (status.getPrimaryProviderStatus()
+                != LocationTimeZoneAlgorithmStatus.PROVIDER_STATUS_IS_CERTAIN) {
+            return secondary;
+        }
+
+        return primary;
+    }
+
+    @Override
+    public void onChange() {
+        if (mPreference != null) {
+            mPreference.setVisible(getAvailabilityStatus() == AVAILABLE_UNSEARCHABLE);
+            refreshSummary(mPreference);
+        }
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        boolean locationEnabled = mLocationManager.isLocationEnabled();
+        final TimeZoneDetectorStatus detectorStatus =
+                mTimeManager.getTimeZoneCapabilitiesAndConfig().getDetectorStatus();
+
+        if (!locationEnabled && hasLocationTimeZoneNoTelephonyFallback(detectorStatus)) {
+            return mContext.getResources().getString(
+                    R.string.location_time_zone_detection_status_summary_blocked_by_settings);
+        }
+
+        TimeZoneProviderStatus ltzpStatus = getLtzpStatus();
+        if (ltzpStatus == null) {
+            return "";
+        }
+
+        int status = ltzpStatus.getLocationDetectionDependencyStatus();
+
+        if (status == TimeZoneProviderStatus.DEPENDENCY_STATUS_BLOCKED_BY_ENVIRONMENT) {
+            return mContext.getResources().getString(
+                    R.string.location_time_zone_detection_status_summary_blocked_by_environment);
+        }
+        if (status == TimeZoneProviderStatus.DEPENDENCY_STATUS_DEGRADED_BY_SETTINGS) {
+            return mContext.getResources().getString(
+                    R.string.location_time_zone_detection_status_summary_degraded_by_settings);
+        }
+        if (status == TimeZoneProviderStatus.DEPENDENCY_STATUS_TEMPORARILY_UNAVAILABLE) {
+            return mContext.getResources().getString(
+                    R.string.location_time_zone_detection_status_summary_temporarily_unavailable);
+        }
+        if (status == TimeZoneProviderStatus.DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS) {
+            return mContext.getResources().getString(
+                    R.string.location_time_zone_detection_status_summary_blocked_by_settings);
+        }
+
+        return "";
+    }
+
+    /** package */
+    static boolean hasLocationTimeZoneNoTelephonyFallback(TimeZoneDetectorStatus detectorStatus) {
+        final LocationTimeZoneAlgorithmStatus locationStatus =
+                detectorStatus.getLocationTimeZoneAlgorithmStatus();
+        final TelephonyTimeZoneAlgorithmStatus telephonyStatus =
+                detectorStatus.getTelephonyTimeZoneAlgorithmStatus();
+        return telephonyStatus.getAlgorithmStatus()
+                == DetectorStatusTypes.DETECTION_ALGORITHM_STATUS_NOT_SUPPORTED
+                && locationStatus.getStatus()
+                != DetectorStatusTypes.DETECTION_ALGORITHM_STATUS_NOT_SUPPORTED;
+    }
+}

tests/robotests/src/com/android/settings/datetime/AutoTimeZonePreferenceControllerTest.java

@@ -16,6 +16,7 @@
 
 package com.android.settings.datetime;
 
+import static android.app.time.DetectorStatusTypes.DETECTION_ALGORITHM_STATUS_NOT_SUPPORTED;
 import static android.app.time.DetectorStatusTypes.DETECTION_ALGORITHM_STATUS_RUNNING;
 import static android.app.time.DetectorStatusTypes.DETECTOR_STATUS_RUNNING;
 import static android.app.time.LocationTimeZoneAlgorithmStatus.PROVIDER_STATUS_NOT_PRESENT;
@@ -36,10 +37,13 @@ import android.app.time.TimeZoneCapabilitiesAndConfig;
 import android.app.time.TimeZoneConfiguration;
 import android.app.time.TimeZoneDetectorStatus;
 import android.content.Context;
+import android.location.LocationManager;
 import android.os.UserHandle;
 
 import androidx.preference.Preference;
 
+import com.android.settings.R;
+
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -58,6 +62,8 @@ public class AutoTimeZonePreferenceControllerTest {
     private Preference mPreference;
     @Mock
     private TimeManager mTimeManager;
+    @Mock
+    private LocationManager mLocationManager;
 
     @Before
     public void setUp() {
@@ -67,6 +73,9 @@ public class AutoTimeZonePreferenceControllerTest {
         mPreference = new Preference(mContext);
 
         when(mContext.getSystemService(TimeManager.class)).thenReturn(mTimeManager);
+        when(mContext.getSystemService(LocationManager.class)).thenReturn(mLocationManager);
+
+        when(mLocationManager.isLocationEnabled()).thenReturn(true);
     }
 
     @Test
@@ -221,10 +230,35 @@ public class AutoTimeZonePreferenceControllerTest {
         assertThat(controller.isEnabled()).isFalse();
     }
 
+    @Test
+    public void getSummary() {
+        AutoTimeZonePreferenceController controller = new AutoTimeZonePreferenceController(
+                mContext, mCallback, false /* fromSUW */);
+
+        TimeZoneCapabilitiesAndConfig capabilitiesAndConfig = createCapabilitiesAndConfig(
+                /* autoSupported= */true, /* autoEnabled= */true, /* telephonySupported= */
+                true);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        when(mTimeManager.updateTimeZoneConfiguration(Mockito.any())).thenReturn(true);
+
+        assertThat(controller.getSummary()).isEqualTo("");
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(
+                /* autoSupported= */true, /* autoEnabled= */true, /* telephonySupported= */
+                false);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        when(mTimeManager.updateTimeZoneConfiguration(Mockito.any())).thenReturn(true);
+
+        assertThat(controller.getSummary()).isEqualTo(
+                mContext.getString(R.string.auto_zone_requires_location_summary));
+    }
+
     private static TimeZoneCapabilitiesAndConfig createCapabilitiesAndConfig(
-            boolean autoSupported, boolean autoEnabled) {
+            boolean autoSupported, boolean autoEnabled, boolean telephonySupported) {
         TimeZoneDetectorStatus status = new TimeZoneDetectorStatus(DETECTOR_STATUS_RUNNING,
-                new TelephonyTimeZoneAlgorithmStatus(DETECTION_ALGORITHM_STATUS_RUNNING),
+                new TelephonyTimeZoneAlgorithmStatus(
+                        telephonySupported ? DETECTION_ALGORITHM_STATUS_RUNNING
+                                : DETECTION_ALGORITHM_STATUS_NOT_SUPPORTED),
                 new LocationTimeZoneAlgorithmStatus(DETECTION_ALGORITHM_STATUS_RUNNING,
                         PROVIDER_STATUS_NOT_READY, null,
                         PROVIDER_STATUS_NOT_PRESENT, null));
@@ -242,4 +276,9 @@ public class AutoTimeZonePreferenceControllerTest {
                 .build();
         return new TimeZoneCapabilitiesAndConfig(status, capabilities, config);
     }
+
+    private static TimeZoneCapabilitiesAndConfig createCapabilitiesAndConfig(
+            boolean autoSupported, boolean autoEnabled) {
+        return createCapabilitiesAndConfig(autoSupported, autoEnabled, false);
+    }
 }

tests/robotests/src/com/android/settings/datetime/LocationProviderStatusPreferenceControllerTest.java

@@ -0,0 +1,238 @@
+/*
+ * Copyright (C) 2022 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.settings.datetime;
+
+import static android.app.time.DetectorStatusTypes.DETECTION_ALGORITHM_STATUS_RUNNING;
+import static android.app.time.DetectorStatusTypes.DETECTOR_STATUS_RUNNING;
+import static android.app.time.LocationTimeZoneAlgorithmStatus.PROVIDER_STATUS_IS_CERTAIN;
+import static android.app.time.LocationTimeZoneAlgorithmStatus.PROVIDER_STATUS_IS_UNCERTAIN;
+import static android.service.timezone.TimeZoneProviderStatus.DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS;
+import static android.service.timezone.TimeZoneProviderStatus.DEPENDENCY_STATUS_OK;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.app.time.Capabilities;
+import android.app.time.LocationTimeZoneAlgorithmStatus;
+import android.app.time.TelephonyTimeZoneAlgorithmStatus;
+import android.app.time.TimeManager;
+import android.app.time.TimeZoneCapabilities;
+import android.app.time.TimeZoneCapabilitiesAndConfig;
+import android.app.time.TimeZoneConfiguration;
+import android.app.time.TimeZoneDetectorStatus;
+import android.content.Context;
+import android.location.LocationManager;
+import android.os.UserHandle;
+import android.service.timezone.TimeZoneProviderStatus;
+
+import androidx.annotation.Nullable;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class LocationProviderStatusPreferenceControllerTest {
+
+    private Context mContext;
+    @Mock
+    private TimeManager mTimeManager;
+    @Mock
+    private LocationManager mLocationManager;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(RuntimeEnvironment.application);
+
+        when(mContext.getSystemService(TimeManager.class)).thenReturn(mTimeManager);
+        when(mContext.getSystemService(LocationManager.class)).thenReturn(mLocationManager);
+        when(mLocationManager.isLocationEnabled()).thenReturn(true);
+        when(mContext.getString(
+                R.string.location_time_zone_detection_status_summary_blocked_by_settings))
+                .thenReturn("BBS");
+    }
+
+    @Test
+    public void testCapabilityStatus() {
+        TimeZoneCapabilitiesAndConfig capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_OK, DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        LocationProviderStatusPreferenceController controller =
+                new LocationProviderStatusPreferenceController(mContext, "LPSPC");
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(true, DEPENDENCY_STATUS_OK,
+                DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(true,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+    }
+
+    @Test
+    public void testProviderStatus_primaryCertain() {
+        TimeZoneCapabilitiesAndConfig capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_OK, DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        LocationProviderStatusPreferenceController controller =
+                new LocationProviderStatusPreferenceController(mContext, "LPSPC");
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, DEPENDENCY_STATUS_OK);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, DEPENDENCY_STATUS_OK,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, DEPENDENCY_STATUS_OK,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void testProviderStatus_primaryUncertain() {
+        TimeZoneCapabilitiesAndConfig capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_OK, DEPENDENCY_STATUS_OK, PROVIDER_STATUS_IS_CERTAIN);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        LocationProviderStatusPreferenceController controller =
+                new LocationProviderStatusPreferenceController(mContext, "LPSPC");
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, DEPENDENCY_STATUS_OK,
+                PROVIDER_STATUS_IS_CERTAIN);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, DEPENDENCY_STATUS_OK,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, PROVIDER_STATUS_IS_UNCERTAIN);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, DEPENDENCY_STATUS_OK,
+                DEPENDENCY_STATUS_OK, PROVIDER_STATUS_IS_UNCERTAIN);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+    }
+
+    @Test
+    public void testProviderStatus_nullProviders() {
+        TimeZoneCapabilitiesAndConfig capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                null, null);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+        LocationProviderStatusPreferenceController controller =
+                new LocationProviderStatusPreferenceController(mContext, "LPSPC");
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS, null);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, DEPENDENCY_STATUS_OK, null);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+
+        capabilitiesAndConfig = createCapabilitiesAndConfig(false, null,
+                DEPENDENCY_STATUS_BLOCKED_BY_SETTINGS);
+        when(mTimeManager.getTimeZoneCapabilitiesAndConfig()).thenReturn(capabilitiesAndConfig);
+
+        assertThat(controller.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE_UNSEARCHABLE);
+    }
+
+    private TimeZoneCapabilitiesAndConfig createCapabilitiesAndConfig(boolean capabilitySupported,
+            @Nullable Integer primary, @Nullable Integer secondary) {
+        return createCapabilitiesAndConfig(capabilitySupported, primary, secondary,
+                PROVIDER_STATUS_IS_CERTAIN);
+    }
+
+    private TimeZoneCapabilitiesAndConfig createCapabilitiesAndConfig(boolean capabilitySupported,
+            @Nullable Integer primary, @Nullable Integer secondary, int primaryProviderStatus) {
+        TimeZoneDetectorStatus status = new TimeZoneDetectorStatus(DETECTOR_STATUS_RUNNING,
+                new TelephonyTimeZoneAlgorithmStatus(DETECTION_ALGORITHM_STATUS_RUNNING),
+                new LocationTimeZoneAlgorithmStatus(DETECTION_ALGORITHM_STATUS_RUNNING,
+                        primaryProviderStatus, primary != null
+                        ? new TimeZoneProviderStatus.Builder().setLocationDetectionDependencyStatus(
+                        primary).build() : null, PROVIDER_STATUS_IS_CERTAIN, secondary != null
+                        ? new TimeZoneProviderStatus.Builder().setLocationDetectionDependencyStatus(
+                        secondary).build() : null));
+
+        TimeZoneCapabilities capabilities = new TimeZoneCapabilities.Builder(
+                UserHandle.SYSTEM).setConfigureAutoDetectionEnabledCapability(
+                Capabilities.CAPABILITY_POSSESSED).setConfigureGeoDetectionEnabledCapability(
+                capabilitySupported ? Capabilities.CAPABILITY_POSSESSED
+                        : Capabilities.CAPABILITY_NOT_SUPPORTED).setSetManualTimeZoneCapability(
+                Capabilities.CAPABILITY_POSSESSED).build();
+
+        return new TimeZoneCapabilitiesAndConfig(status, capabilities,
+                new TimeZoneConfiguration.Builder().build());
+    }
+}