[Wi-Fi] Add new unit test file WifiP2pSettingsTest.java.

Add new unit test file WifiP2pSettingsTest.java.

Bug: 151696220
Test: make RunSettingsRoboTests ROBOTEST_FILTER=WifiP2pSettingsTest
Change-Id: I686658969a801e385a102022c6854d8bb8972d3c

src/com/android/settings/wifi/p2p/WifiP2pSettings.java

@@ -50,6 +50,7 @@ import android.view.View;
 import android.widget.EditText;
 import android.widget.Toast;
 
+import androidx.annotation.VisibleForTesting;
 import androidx.appcompat.app.AlertDialog;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
@@ -79,9 +80,9 @@ public class WifiP2pSettings extends DashboardFragment
     private OnClickListener mDisconnectListener;
     private OnClickListener mCancelConnectListener;
     private OnClickListener mDeleteGroupListener;
-    private WifiP2pPeer mSelectedWifiPeer;
+    @VisibleForTesting WifiP2pPeer mSelectedWifiPeer;
     private WifiP2pPersistentGroup mSelectedGroup;
-    private String mSelectedGroupName;
+    @VisibleForTesting String mSelectedGroupName;
     private EditText mDeviceNameText;
 
     private boolean mWifiP2pEnabled;
@@ -100,13 +101,13 @@ public class WifiP2pSettings extends DashboardFragment
     private static final int DIALOG_DELETE_GROUP = 4;
 
     private static final String SAVE_DIALOG_PEER = "PEER_STATE";
-    private static final String SAVE_DEVICE_NAME = "DEV_NAME";
-    private static final String SAVE_SELECTED_GROUP = "GROUP_NAME";
+    @VisibleForTesting static final String SAVE_DEVICE_NAME = "DEV_NAME";
+    @VisibleForTesting static final String SAVE_SELECTED_GROUP = "GROUP_NAME";
 
     private WifiP2pDevice mThisDevice;
     private WifiP2pDeviceList mPeers = new WifiP2pDeviceList();
 
-    private String mSavedDeviceName;
+    @VisibleForTesting String mSavedDeviceName;
 
     private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
         @Override

tests/robotests/src/com/android/settings/wifi/p2p/WifiP2pSettingsTest.java

@@ -0,0 +1,105 @@
+/*
+ * 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.p2p;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.os.Bundle;
+
+import androidx.fragment.app.FragmentActivity;
+
+import com.android.settings.testutils.XmlTestUtils;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.Robolectric;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+public class WifiP2pSettingsTest {
+
+    private Context mContext;
+    private FragmentActivity mActivity;
+    private WifiP2pSettings mFragment;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mActivity = Robolectric.setupActivity(FragmentActivity.class);
+        mFragment = spy(new WifiP2pSettings());
+    }
+
+    @Test
+    public void preferenceScreenKey_shouldContainsAllControllerKeys() {
+        final List<String> preferenceScreenKeys = XmlTestUtils.getKeysFromPreferenceXml(mContext,
+                mFragment.getPreferenceScreenResId());
+        final List<String> preferenceKeys = new ArrayList<>();
+
+        for (AbstractPreferenceController controller : mFragment.createPreferenceControllers(
+                mContext)) {
+            preferenceKeys.add(controller.getPreferenceKey());
+        }
+
+        assertThat(preferenceScreenKeys).containsAllIn(preferenceKeys);
+    }
+
+    @Test
+    public void onActivityCreate_withNullBundle_canNotGetValue() {
+        when(mFragment.getActivity()).thenReturn(mActivity);
+
+        mFragment.onActivityCreated(null);
+
+        assertThat(mFragment.mSelectedWifiPeer).isNull();
+    }
+
+    @Test
+    public void onActivityCreate_withDeviceName_shouldGetDeviceName() {
+        when(mFragment.getActivity()).thenReturn(mActivity);
+        final String fakeDeviceName = "fakename";
+        final Bundle bundle = new Bundle();
+        bundle.putString(WifiP2pSettings.SAVE_DEVICE_NAME, fakeDeviceName);
+
+        mFragment.onActivityCreated(bundle);
+
+        assertThat(mFragment.mSavedDeviceName).isEqualTo(fakeDeviceName);
+    }
+
+    @Test
+    public void onActivityCreate_withGroupName_shouldGetGroupName() {
+        when(mFragment.getActivity()).thenReturn(mActivity);
+        final String fakeGroupName = "fakegroup";
+        final Bundle bundle = new Bundle();
+        bundle.putString(WifiP2pSettings.SAVE_SELECTED_GROUP, fakeGroupName);
+
+        mFragment.onActivityCreated(bundle);
+
+        assertThat(mFragment.mSelectedGroupName).isEqualTo(fakeGroupName);
+        assertThat(mFragment.mSavedDeviceName).isNull();
+    }
+}