ChromeOs Power Emulation Impl

chromeos/dbus/fake_power_manager_client_unittest.cc

+// Copyright 2015 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 "chromeos/dbus/fake_power_manager_client.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace chromeos {
+
+class FakePowerManagerClientTest : public testing::Test {
+ public:
+  FakePowerManagerClientTest() {}
+
+  void UpdatePowerProperties(
+      int percentage,
+      power_manager::PowerSupplyProperties_BatteryState state,
+      power_manager::PowerSupplyProperties_ExternalPower power) {
+    client_.UpdatePowerProperties(percentage, false, state, power);
+  }
+
+ protected:
+  FakePowerManagerClient client_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakePowerManagerClientTest);
+};
+
+TEST_F(FakePowerManagerClientTest, InitializationTest) {
+  // Test the default values that are assigned when the
+  // FakePowerManagerClient::Init() is called.
+  client_.Init(nullptr);
+
+  EXPECT_EQ(50, client_.props().battery_percent());

[Daniel Erat, 2015/07/07 21:30:56]

as mentioned in the last round of comments, i don't think that these tests make
sense. they're just verifying that the constants that are hardcoded here match
the constants that are hardcoded in the implementation. that doesn't seem like
it buys us anything.

[mozartalouis, 2015/07/08 23:13:02]

Done.

+  EXPECT_FALSE(client_.props().is_calculating_battery_time());
+  EXPECT_EQ(power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+            client_.props().battery_state());
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED,
+            client_.props().external_power());
+}
+
+TEST_F(FakePowerManagerClientTest, BatteryStateTest) {
+  // Test if setting battery_percent to 100 and battery_state to
+  // CHARGING will reset the battery_state to FULL.
+  UpdatePowerProperties(
+      100, power_manager::PowerSupplyProperties_BatteryState_CHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_AC);
+  EXPECT_EQ(100, client_.props().battery_percent());
+  EXPECT_EQ(power_manager::PowerSupplyProperties_BatteryState_FULL,
+            client_.props().battery_state());
+
+  // Test if setting battery_percent less than 100 and
+  // battery_state to FULL will reset battery_state to
+  // DISCHARGING.
+  UpdatePowerProperties(
+      80, power_manager::PowerSupplyProperties_BatteryState_FULL,
+      power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED);
+  EXPECT_EQ(80, client_.props().battery_percent());
+  EXPECT_EQ(power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+            client_.props().battery_state());
+}
+
+TEST_F(FakePowerManagerClientTest, ExternalPowerTest) {
+  // Test if setting battery_percent less than 100 and
+  // battery_state to CHARGING while external_power is set to
+  // USB will set external_power to USB.
+  UpdatePowerProperties(
+      80, power_manager::PowerSupplyProperties_BatteryState_CHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_USB);
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_USB,
+            client_.props().external_power());
+
+  // Test if setting battery_percent less than 100 and
+  // battery_state to DISCHARGING while external_power is set to
+  // USB will set external_power to USB.
+  UpdatePowerProperties(
+      80, power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_USB);
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_USB,
+            client_.props().external_power());
+
+  // Test if setting battery_percent less than 100 and
+  // battery_state to CHARGING while external_power is set to
+  // DISCONNECTED will set external_power to AC.
+  UpdatePowerProperties(
+      80, power_manager::PowerSupplyProperties_BatteryState_CHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED);
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_AC,
+            client_.props().external_power());
+
+  // Test if setting battery_percent less than 100 and
+  // battery_state to CHARGING while external_power is set to
+  // AC will set external_power to DISCONNECTED.
+  UpdatePowerProperties(
+      80, power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_AC);
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED,
+            client_.props().external_power());
+}
+
+}  // namespace chromeos