Add "Speed & compatibility" preference to Wi-Fi hotspot Settings

- Show 4 speed types in summary
  - 2.4 Ghz
  - 5 Ghz
  - 2.4 and 5 GHz
  - 6 GHz

Bug: 245258763
Test: manual test
atest -c WifiTetherViewModelTest
atest -c WifiHotspotRepositoryTest
make RunSettingsRoboTests ROBOTEST_FILTER=WifiTetherSettingsTest

Change-Id: I6deb41cb355b0ceb1f1fd2d84408a83b90433e7d

tests/unit/src/com/android/settings/wifi/tether/WifiTetherViewModelTest.java

@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2023 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.wifi.tether;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.Application;
+import android.net.wifi.SoftApConfiguration;
+
+import androidx.lifecycle.MutableLiveData;
+import androidx.test.annotation.UiThreadTest;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import com.android.settings.testutils.FakeFeatureFactory;
+import com.android.settings.wifi.repository.WifiHotspotRepository;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnit;
+import org.mockito.junit.MockitoRule;
+
+import java.util.concurrent.Executor;
+
+@RunWith(AndroidJUnit4.class)
+public class WifiTetherViewModelTest {
+    @Rule
+    public final MockitoRule mMockitoRule = MockitoJUnit.rule();
+    @Mock
+    Application mApplication;
+    @Mock
+    Executor mExecutor;
+    @Mock
+    WifiHotspotRepository mWifiHotspotRepository;
+    @Mock
+    MutableLiveData<Integer> mSpeedType;
+
+    WifiTetherViewModel mViewModel;
+
+    @Before
+    public void setUp() {
+        when(mApplication.getMainExecutor()).thenReturn(mExecutor);
+
+        FakeFeatureFactory featureFactory = FakeFeatureFactory.setupForTest();
+        when(featureFactory.getWifiFeatureProvider().getWifiHotspotRepository())
+                .thenReturn(mWifiHotspotRepository);
+        when(mWifiHotspotRepository.getSpeedType()).thenReturn(mSpeedType);
+
+        mViewModel = new WifiTetherViewModel(mApplication);
+    }
+
+    @Test
+    public void constructor_setAutoRefreshTrue() {
+        verify(mWifiHotspotRepository).setAutoRefresh(true);
+    }
+
+    @Test
+    public void onCleared_setAutoRefreshFalse() {
+        mViewModel.onCleared();
+
+        verify(mWifiHotspotRepository).setAutoRefresh(false);
+    }
+
+    @Test
+    public void setSoftApConfiguration_setConfigByRepository() {
+        SoftApConfiguration config = new SoftApConfiguration.Builder().build();
+
+        mViewModel.setSoftApConfiguration(config);
+
+        verify(mWifiHotspotRepository).setSoftApConfiguration(config);
+    }
+
+    @Test
+    public void refresh_refreshByRepository() {
+        mViewModel.refresh();
+
+        verify(mWifiHotspotRepository).refresh();
+    }
+
+    @Test
+    @UiThreadTest
+    public void getSpeedSummary_returnNotNull() {
+        mViewModel.mSpeedSummary = null;
+
+        mViewModel.getSpeedSummary();
+
+        assertThat(mViewModel.mSpeedSummary).isNotNull();
+    }
+}