Don't hide network reset even if it's disabled by admin.

Change-Id: Ib78a3c9434c8543f3be34932264802f1065cc54b
Fix: 37134598
Test: robotests

res/xml/reset_dashboard_fragment.xml

@@ -21,9 +21,11 @@
     android:title="@string/reset_dashboard_title">
 
     <!-- Network reset -->
-    <Preference
+    <com.android.settingslib.RestrictedPreference
         android:key="network_reset_pref"
         android:title="@string/reset_network_title"
+        settings:userRestriction="no_network_reset"
+        settings:useAdminDisabledSummary="true"
         android:fragment="com.android.settings.ResetNetwork" />
 
     <!-- Reset app preferences -->

src/com/android/settings/network/NetworkResetPreferenceController.java

@@ -31,7 +31,7 @@ public class NetworkResetPreferenceController extends PreferenceController {
 
     @Override
     public boolean isAvailable() {
-        return !mRestrictionChecker.hasRestriction();
+        return !mRestrictionChecker.hasUserRestriction();
     }
 
     @Override

src/com/android/settings/network/NetworkResetRestrictionChecker.java

@@ -45,9 +45,13 @@ public class NetworkResetRestrictionChecker {
                 mContext, UserManager.DISALLOW_NETWORK_RESET, UserHandle.myUserId()) != null;
     }
 
-    boolean hasRestriction() {
+    boolean hasUserRestriction() {
         return !mUserManager.isAdminUser()
-                || hasUserBaseRestriction()
+                || hasUserBaseRestriction();
+    }
+
+    boolean hasRestriction() {
+        return hasUserRestriction()
                 || isRestrictionEnforcedByAdmin();
     }
 }

tests/robotests/src/com/android/settings/network/NetworkResetPreferenceControllerTest.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2017 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.network;
+
+
+import android.content.Context;
+
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+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;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class NetworkResetPreferenceControllerTest {
+
+    @Mock
+    private NetworkResetRestrictionChecker mRestrictionChecker;
+    private Context mContext;
+    private NetworkResetPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = new NetworkResetPreferenceController(mContext);
+        ReflectionHelpers.setField(mController, "mRestrictionChecker", mRestrictionChecker);
+    }
+
+    @Test
+    public void testIsAvailable_shouldReturnTrueWhenNoUserRestriction() {
+        when(mRestrictionChecker.isRestrictionEnforcedByAdmin()).thenReturn(true);
+
+        when(mRestrictionChecker.hasUserRestriction()).thenReturn(true);
+
+        assertThat(mController.isAvailable()).isFalse();
+
+        when(mRestrictionChecker.hasUserRestriction()).thenReturn(false);
+
+        assertThat(mController.isAvailable()).isTrue();
+        verify(mRestrictionChecker, never()).isRestrictionEnforcedByAdmin();
+    }
+}