[Wi-Fi] Implement ConnectedWifiEntryPreference to show gear icon

click the gear icon will always switch to Wi-Fi detail screen.

Bug: 150911380
Test: make RunSettingsRoboTests ROBOTEST_FILTER=ConnectedWifiEntryPreferenceTest
Change-Id: I640d180ae5684ffaa9b2adec7b1be401b2bfd89d

tests/robotests/src/com/android/settings/wifi/ConnectedWifiEntryPreferenceTest.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2020 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;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.view.View;
+
+import com.android.settings.R;
+import com.android.wifitrackerlib.WifiEntry;
+
+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 ConnectedWifiEntryPreferenceTest {
+
+    @Mock
+    private WifiEntry mWifiEntry;
+    @Mock
+    private View mView;
+    @Mock
+    private ConnectedWifiEntryPreference.OnGearClickListener mOnGearClickListener;
+    private Context mContext;
+    private ConnectedWifiEntryPreference mConnectedWifiEntryPreference;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application;
+        mConnectedWifiEntryPreference = new ConnectedWifiEntryPreference(mContext, mWifiEntry,
+                null /* fragment */);
+        mConnectedWifiEntryPreference.setOnGearClickListener(mOnGearClickListener);
+    }
+
+    @Test
+    public void testOnClick_gearClicked_listenerInvoked() {
+        when(mView.getId()).thenReturn(R.id.settings_button);
+
+        mConnectedWifiEntryPreference.onClick(mView);
+
+        verify(mOnGearClickListener).onGearClick(mConnectedWifiEntryPreference);
+    }
+
+    @Test
+    public void testOnClick_gearNotClicked_listenerNotInvoked() {
+        mConnectedWifiEntryPreference.onClick(mView);
+
+        verify(mOnGearClickListener, never()).onGearClick(mConnectedWifiEntryPreference);
+    }
+
+    @Test
+    public void testWidgetLayoutPreference() {
+        assertThat(mConnectedWifiEntryPreference.getWidgetLayoutResource())
+            .isEqualTo(R.layout.preference_widget_gear_optional_background);
+    }
+}