[Settings] Data warning & limit UI should be configuable when running out of limit

Should access API which is irrelated to status of data limit.
Changing from API isDataEnabledForApn(ApnSetting.TYPE_DEFAULT)
into isDataEnabledForReason(TelephonyManager.DATA_ENABLED_REASON_USER).

Bug: 223361190
Change-Id: Iada89de38e9db3706a944c7a5b5f8a3e87d415e5
Test: Manual
(cherry picked from commit 7e530dda39da543e3443c97e0cc0ff32b9e50478)
diff --git a/src/com/android/settings/datausage/BillingCyclePreference.java b/src/com/android/settings/datausage/BillingCyclePreference.java
index 116ed89..1bd2be8 100644
--- a/src/com/android/settings/datausage/BillingCyclePreference.java
+++ b/src/com/android/settings/datausage/BillingCyclePreference.java
@@ -20,6 +20,7 @@
 import android.net.NetworkTemplate;
 import android.os.Bundle;
 import android.os.RemoteException;
+import android.telephony.TelephonyManager;
 import android.telephony.data.ApnSetting;
 import android.util.AttributeSet;
 
@@ -78,7 +79,7 @@
         try {
             setEnabled(mServices.mNetworkService.isBandwidthControlEnabled()
                     && mServices.mTelephonyManager.createForSubscriptionId(mSubId)
-                            .isDataEnabledForApn(ApnSetting.TYPE_DEFAULT)
+                            .isDataEnabledForReason(TelephonyManager.DATA_ENABLED_REASON_USER)
                     && mServices.mUserManager.isAdminUser());
         } catch (RemoteException e) {
             setEnabled(false);
diff --git a/tests/unit/src/com/android/settings/datausage/BillingCyclePreferenceTest.java b/tests/unit/src/com/android/settings/datausage/BillingCyclePreferenceTest.java
new file mode 100644
index 0000000..f74768f
--- /dev/null
+++ b/tests/unit/src/com/android/settings/datausage/BillingCyclePreferenceTest.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2022 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.datausage;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.os.INetworkManagementService;
+import android.os.RemoteException;
+import android.os.UserManager;
+import android.telephony.TelephonyManager;
+import androidx.test.core.app.ApplicationProvider;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+@RunWith(AndroidJUnit4.class)
+public class BillingCyclePreferenceTest {
+
+    private Context mContext;
+    private BillingCyclePreference mPreference;
+    private TemplatePreference.NetworkServices mServices;
+    @Mock
+    private INetworkManagementService mNetManageSerice;
+    @Mock
+    private TelephonyManager mTelephonyManager;
+    @Mock
+    private UserManager mUserManager;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(ApplicationProvider.getApplicationContext());
+
+        mServices = new TemplatePreference.NetworkServices();
+        mServices.mNetworkService = mNetManageSerice;
+        mServices.mTelephonyManager = mTelephonyManager;
+        mServices.mUserManager = mUserManager;
+
+        doReturn(mTelephonyManager).when(mTelephonyManager)
+                .createForSubscriptionId(anyInt());
+
+        mPreference = spy(new BillingCyclePreference(mContext, null /* attrs */));
+        mPreference.setTemplate(null, 0, mServices);
+    }
+
+    @Test
+    public void testPreferenceUpdate_onMobileDataEnabledChange_accessDataEnabledApi() {
+        try {
+            doReturn(true).when(mNetManageSerice).isBandwidthControlEnabled();
+        } catch (RemoteException exception) {}
+        doReturn(true).when(mUserManager).isAdminUser();
+        mPreference.onMobileDataEnabledChange();
+
+        verify(mTelephonyManager)
+                .isDataEnabledForReason(TelephonyManager.DATA_ENABLED_REASON_USER);
+    }
+}
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