1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <base/files/file_util.h>
18 #include <base/files/scoped_temp_dir.h>
19 #include <base/macros.h>
20 #include <base/sys_info.h>
21 #include <binder/IBinder.h>
22 #include <binder/IInterface.h>
23 #include <binderwrapper/binder_test_base.h>
24 #include <binderwrapper/stub_binder_wrapper.h>
25 #include <cutils/android_reboot.h>
26 #include <nativepower/constants.h>
27 #include <powermanager/PowerManager.h>
28
29 #include "power_manager.h"
30 #include "system_property_setter_stub.h"
31 #include "wake_lock_manager_stub.h"
32
33 namespace android {
34
35 class PowerManagerTest : public BinderTestBase {
36 public:
PowerManagerTest()37 PowerManagerTest()
38 : power_manager_(new PowerManager()),
39 interface_(interface_cast<IPowerManager>(power_manager_)),
40 property_setter_(new SystemPropertySetterStub()),
41 wake_lock_manager_(new WakeLockManagerStub()) {
42 CHECK(temp_dir_.CreateUniqueTempDir());
43
44 power_state_path_ = temp_dir_.path().Append("power_state");
45 power_manager_->set_power_state_path_for_testing(power_state_path_);
46 ClearPowerState();
47
48 power_manager_->set_property_setter_for_testing(
49 std::unique_ptr<SystemPropertySetterInterface>(property_setter_));
50 power_manager_->set_wake_lock_manager_for_testing(
51 std::unique_ptr<WakeLockManagerInterface>(wake_lock_manager_));
52
53 CHECK(power_manager_->Init());
54 }
55 ~PowerManagerTest() override = default;
56
57 protected:
58 // Returns the value in |power_state_path_|.
ReadPowerState()59 std::string ReadPowerState() {
60 std::string state;
61 PCHECK(base::ReadFileToString(power_state_path_, &state))
62 << "Failed to read " << power_state_path_.value();
63 return state;
64 }
65
66 // Clears |power_state_path_|.
ClearPowerState()67 void ClearPowerState() {
68 PCHECK(base::WriteFile(power_state_path_, "", 0) == 0)
69 << "Failed to write " << power_state_path_.value();
70 }
71
72 base::ScopedTempDir temp_dir_;
73 sp<PowerManager> power_manager_;
74 sp<IPowerManager> interface_;
75 SystemPropertySetterStub* property_setter_; // Owned by |power_manager_|.
76 WakeLockManagerStub* wake_lock_manager_; // Owned by |power_manager_|.
77
78 // File under |temp_dir_| used in place of /sys/power/state.
79 base::FilePath power_state_path_;
80
81 private:
82 DISALLOW_COPY_AND_ASSIGN(PowerManagerTest);
83 };
84
TEST_F(PowerManagerTest,RegisterService)85 TEST_F(PowerManagerTest, RegisterService) {
86 EXPECT_EQ(power_manager_,
87 binder_wrapper()->GetRegisteredService(kPowerManagerServiceName));
88 }
89
TEST_F(PowerManagerTest,AcquireAndReleaseWakeLock)90 TEST_F(PowerManagerTest, AcquireAndReleaseWakeLock) {
91 const char kTag[] = "foo";
92 const char kPackage[] = "bar";
93 sp<BBinder> binder = binder_wrapper()->CreateLocalBinder();
94
95 // Check that PowerManager looks up the calling UID when necessary.
96 const uid_t kCallingUid = 100;
97 binder_wrapper()->set_calling_uid(kCallingUid);
98 EXPECT_EQ(OK, interface_->acquireWakeLock(0, binder, String16(kTag),
99 String16(kPackage)));
100 EXPECT_EQ(1, wake_lock_manager_->num_requests());
101 EXPECT_EQ(
102 WakeLockManagerStub::ConstructRequestString(kTag, kPackage, kCallingUid),
103 wake_lock_manager_->GetRequestString(
104 binder_wrapper()->local_binders()[0]));
105
106 EXPECT_EQ(OK, interface_->releaseWakeLock(binder, 0));
107 EXPECT_EQ(0, wake_lock_manager_->num_requests());
108
109 // If a UID is passed, it should be used instead.
110 const uid_t kPassedUid = 200;
111 EXPECT_EQ(OK, interface_->acquireWakeLockWithUid(
112 0, binder, String16(kTag), String16(kPackage), kPassedUid));
113 EXPECT_EQ(1, wake_lock_manager_->num_requests());
114 EXPECT_EQ(
115 WakeLockManagerStub::ConstructRequestString(kTag, kPackage, kPassedUid),
116 wake_lock_manager_->GetRequestString(
117 binder_wrapper()->local_binders()[0]));
118 }
119
TEST_F(PowerManagerTest,GoToSleep)120 TEST_F(PowerManagerTest, GoToSleep) {
121 EXPECT_EQ("", ReadPowerState());
122
123 const int64_t kStartTime = base::SysInfo::Uptime().InMilliseconds();
124 EXPECT_EQ(OK,
125 interface_->goToSleep(kStartTime, 0 /* reason */, 0 /* flags */));
126 EXPECT_EQ(PowerManager::kPowerStateSuspend, ReadPowerState());
127
128 // A request with a timestamp preceding the last resume should be ignored.
129 ClearPowerState();
130 EXPECT_EQ(BAD_VALUE, interface_->goToSleep(kStartTime - 1, 0, 0));
131 EXPECT_EQ("", ReadPowerState());
132
133 // A second attempt with a timestamp occurring after the last
134 // resume should be honored.
135 ClearPowerState();
136 EXPECT_EQ(
137 OK,
138 interface_->goToSleep(base::SysInfo::Uptime().InMilliseconds(), 0, 0));
139 EXPECT_EQ(PowerManager::kPowerStateSuspend, ReadPowerState());
140 }
141
TEST_F(PowerManagerTest,Reboot)142 TEST_F(PowerManagerTest, Reboot) {
143 EXPECT_EQ(OK, interface_->reboot(false, String16(), false));
144 EXPECT_EQ(PowerManager::kRebootPrefix,
145 property_setter_->GetProperty(ANDROID_RB_PROPERTY));
146
147 EXPECT_EQ(OK, interface_->reboot(false, String16(kRebootReasonRecovery),
148 false));
149 EXPECT_EQ(std::string(PowerManager::kRebootPrefix) + kRebootReasonRecovery,
150 property_setter_->GetProperty(ANDROID_RB_PROPERTY));
151
152 // Invalid values should be rejected.
153 ASSERT_TRUE(property_setter_->SetProperty(ANDROID_RB_PROPERTY, ""));
154 EXPECT_EQ(BAD_VALUE, interface_->reboot(false, String16("foo"), false));
155 EXPECT_EQ("", property_setter_->GetProperty(ANDROID_RB_PROPERTY));
156 }
157
TEST_F(PowerManagerTest,Shutdown)158 TEST_F(PowerManagerTest, Shutdown) {
159 EXPECT_EQ(OK, interface_->shutdown(false, String16(), false));
160 EXPECT_EQ(PowerManager::kShutdownPrefix,
161 property_setter_->GetProperty(ANDROID_RB_PROPERTY));
162
163 EXPECT_EQ(OK, interface_->shutdown(false,
164 String16(kShutdownReasonUserRequested),
165 false));
166 EXPECT_EQ(std::string(PowerManager::kShutdownPrefix) +
167 kShutdownReasonUserRequested,
168 property_setter_->GetProperty(ANDROID_RB_PROPERTY));
169
170 // Invalid values should be rejected.
171 ASSERT_TRUE(property_setter_->SetProperty(ANDROID_RB_PROPERTY, ""));
172 EXPECT_EQ(BAD_VALUE, interface_->shutdown(false, String16("foo"), false));
173 EXPECT_EQ("", property_setter_->GetProperty(ANDROID_RB_PROPERTY));
174 }
175
176 } // namespace android
177