Migrate ChooseAccountActivity to DashboardFragment

- Build a controller to generate/manage a list of preferences.
- Move some logics to the controller and add tests.
- Rename to ChooseAccountFragment.

Bug: 73899467
Test: make RunSettingsRoboTests -j
      atest UniquePreferenceTest SettingsGatewayTest
Change-Id: Id2906c4b922ef159d08c803b976671264c54665f

tests/robotests/src/com/android/settings/accounts/EnterpriseDisclosurePreferenceControllerTest.java

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2018 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.accounts;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+
+import com.android.settings.core.BasePreferenceController;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settingslib.widget.FooterPreferenceMixin;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+
+import androidx.preference.PreferenceManager;
+import androidx.preference.PreferenceScreen;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class EnterpriseDisclosurePreferenceControllerTest {
+
+    private static final String TEST_DISCLOSURE = "This is a test disclosure.";
+
+    private ChooseAccountFragment mFragment;
+    private Context mContext;
+    private EnterpriseDisclosurePreferenceController mController;
+    private FooterPreferenceMixin mFooterPreferenceMixin;
+    private PreferenceManager mPreferenceManager;
+    private PreferenceScreen mPreferenceScreen;
+
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = spy(new EnterpriseDisclosurePreferenceController(mContext));
+        mFragment = spy(new ChooseAccountFragment());
+        mFooterPreferenceMixin = new FooterPreferenceMixin(mFragment, mFragment.getLifecycle());
+        mPreferenceManager = new PreferenceManager(mContext);
+        mPreferenceScreen = mPreferenceManager.createPreferenceScreen(mContext);
+    }
+
+    @Test
+    public void getAvailabilityStatus_hasDisclosure_shouldBeAvailable() {
+        doReturn(TEST_DISCLOSURE).when(mController).getDisclosure();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_noDisclosure_shouldBeDisabled() {
+        doReturn(null).when(mController).getDisclosure();
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(
+                BasePreferenceController.DISABLED_UNSUPPORTED);
+    }
+
+    @Test
+    public void displayPreference_hasDisclosure_shouldSetTitle() {
+        doReturn(TEST_DISCLOSURE).when(mController).getDisclosure();
+        doReturn(mPreferenceScreen).when(mFragment).getPreferenceScreen();
+        doReturn(mPreferenceManager).when(mFragment).getPreferenceManager();
+
+        mController.setFooterPreferenceMixin(mFooterPreferenceMixin);
+        mController.displayPreference(mPreferenceScreen);
+
+        assertThat(mPreferenceScreen.getPreferenceCount()).isEqualTo(1);
+        assertThat(mPreferenceScreen.getPreference(0).getTitle()).isEqualTo(TEST_DISCLOSURE);
+    }
+
+    @Test
+    public void displayPreference_noDisclosure_shouldBeInvisible() {
+        doReturn(null).when(mController).getDisclosure();
+
+        mController.displayPreference(mPreferenceScreen);
+
+        assertThat(mPreferenceScreen.getPreferenceCount()).isEqualTo(0);
+    }
+}