[DeviceLight] Browser+java part

content/renderer/device_sensors/device_light_event_pump_unittest.cc

 // Copyright 2014 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 "device_light_event_pump.h"
 
 #include "base/message_loop/message_loop.h"
 #include "content/common/device_sensors/device_light_hardware_buffer.h"
 #include "content/public/test/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 93 matching lines @@
   light_pump()->Start(listener());
   light_pump()->OnDidStart(handle());
 
   base::MessageLoop::current()->Run();
 
   const DeviceLightData& received_data = listener()->data();
   EXPECT_TRUE(listener()->did_change_device_light());
   EXPECT_EQ(1, static_cast<double>(received_data.value));
 }
 
+TEST_F(DeviceLightEventPumpTest, FireAllNullEvent) {
+  base::MessageLoopForUI loop;
+
+  light_pump()->Start(listener());
+  light_pump()->OnDidStart(handle());
+
+  base::MessageLoop::current()->Run();
+
+  const DeviceLightData& received_data = listener()->data();
+  EXPECT_TRUE(listener()->did_change_device_light());
+  EXPECT_FALSE(received_data.value);
+}
+
 TEST_F(DeviceLightEventPumpTest, DidStartPollingValuesEqual) {
   base::MessageLoopForUI loop;
 
   InitBuffer();
 
   light_pump()->Start(listener());
   light_pump()->OnDidStart(handle());
 
   base::MessageLoop::current()->Run();
 
@@ skipping 14 matching lines @@
       base::Bind(&DeviceLightEventPumpForTesting::FireEvent,
                  base::Unretained(light_pump())));
   base::MessageLoop::current()->Run();
 
   // No change in device light as present value is same as previous value.
   EXPECT_FALSE(listener()->did_change_device_light());
   EXPECT_EQ(last_seen_data, static_cast<double>(received_data.value));
 }
 
 }  // namespace content