Expose cellular signal strength on Android to native

net/android/cellular_signal_strength_unittest.cc

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/android/cellular_signal_strength.h"
+
+#include <stddef.h>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace {
+
+// This test should be run manually since the test APK requires
+// ACCESS_COARSE_LOCATION permission, and the device needs to have an active
+// cellular connection.
+TEST(CellularSignalStrengthAndroidTest, DISABLED_RssiTest) {
+  int64_t rssi = INT64_MIN;
+  EXPECT_TRUE(android::cellular_signal_strength::GetRssiDbm(&rssi));
+  // RSSI (in dbM) should typically be between -100 and 0.
+  EXPECT_LE(-100, rssi);
+  EXPECT_GE(0, rssi);
+}
+
+// This test should be run manually since the test APK requires
+// ACCESS_COARSE_LOCATION permission, and the device needs to have an active
+// cellular connection.
+TEST(CellularSignalStrengthAndroidTest, DISABLED_SignalLevelTest) {
+  int64_t signal_level = INT64_MIN;
+  EXPECT_TRUE(android::cellular_signal_strength::GetSignalLevel(&signal_level));
+  EXPECT_LE(0, signal_level);
+  EXPECT_GE(4, signal_level);
+}
+
+}  // namespace
+
+}  // namespace net