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:
+  FakePowerManagerClientTest() {
+    // Test the default values that are assign when the
+    // FakePowerManagerClient::Init() function is created.

[afakhry, 2015/07/01 16:47:48]

Nits:
- "assign" --> "assigned"
- "created" --> "called"
- You don't need to say "function" here, the parens "()" in Init() is clear
enough

[mozartalouis, 2015/07/01 20:05:23]

Done.

+    client().Init(NULL);

[afakhry, 2015/07/01 16:47:48]

NULL --> nullptr

[mozartalouis, 2015/07/01 20:05:23]

Done.

+
+    EXPECT_EQ(50, client().props().battery_percent());

[afakhry, 2015/07/01 16:47:48]

Nit: You don't have to use client() here, you're inside the class. You can use
the "client_" member directly.

[mozartalouis, 2015/07/01 20:05:23]

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());
+  }
+
+  FakePowerManagerClient& client() { return client_; }
+
+ private:
+  FakePowerManagerClient client_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakePowerManagerClientTest);
+};
+
+TEST_F(FakePowerManagerClientTest, BatteryStateTest) {
+  // Test if setting props_.battery_percent to 100 and props_.battery_state to
+  // _CHARGING will set props_.battery_state to _FULL.
+  client().UpdatePowerProperties(

[afakhry, 2015/07/01 16:47:48]

I would make things more readable here by wrapping this long and tedious call to
UpdatePowerProperties() in a member function of FakePowerManagerClientTest. That
way you can also make client() be like:
const FakePowerManagerClient& client() const;
Since in derived test classes you'll only need to use the const getters.

[mozartalouis, 2015/07/01 20:05:23]

Done.

+      100, false, 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 props_.battery_percent less than 100 and
+  // props_.battery_state to _FULL will set props_.battery_state to
+  // _DISCHARGING.
+  client().UpdatePowerProperties(
+      80, false, 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 props_.battery_percent less than 100 and
+  // props_.battery_state to _CHARGING while props_.external_power is set to
+  // _USB will set props_.external_power to _USB
+  client().UpdatePowerProperties(
+      80, false, power_manager::PowerSupplyProperties_BatteryState_CHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_USB);
+
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_USB,
+            client().props().external_power());
+
+  // Test if setting props_.battery_percent less than 100 and
+  // props_.battery_state to _DISCHARGING while props_.external_power is set to
+  // _USB will set props_.external_power to _USB
+  client().UpdatePowerProperties(
+      80, false, power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_USB);
+
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_USB,
+            client().props().external_power());
+
+  // Test if setting props_.battery_percent less than 100 and
+  // props_.battery_state to _CHARGING while props_.external_power is set to
+  // _DISCONNECTED will set props_.external_power to _AC
+  client().UpdatePowerProperties(
+      80, false, power_manager::PowerSupplyProperties_BatteryState_CHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED);
+
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_AC,
+            client().props().external_power());
+
+  // Test if setting props_.battery_percent less than 100 and
+  // props_.battery_state to _CHARGING while props_.external_power is set to
+  // _AC will set props_.external_power to _DISCONNECTED
+  client().UpdatePowerProperties(
+      80, false, power_manager::PowerSupplyProperties_BatteryState_DISCHARGING,
+      power_manager::PowerSupplyProperties_ExternalPower_AC);
+
+  EXPECT_EQ(power_manager::PowerSupplyProperties_ExternalPower_DISCONNECTED,
+            client().props().external_power());
+}
+
+}  // namespace chromeos