1 /**
2  * Copyright © 2019 IBM Corporation
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 #include "../updater.hpp"
17 #include "mocked_i2c_interface.hpp"
18 
19 #include <filesystem>
20 
21 #include <gtest/gtest.h>
22 
23 namespace fs = std::filesystem;
24 
25 using ::testing::_;
26 using ::testing::An;
27 using ::testing::Pointee;
28 
29 namespace updater
30 {
31 namespace internal
32 {
33 
34 std::string getDeviceName(std::string devPath);
35 std::pair<uint8_t, uint8_t> parseDeviceName(const std::string& devName);
36 
37 } // namespace internal
38 } // namespace updater
39 
40 using namespace updater;
41 
42 class TestUpdater : public ::testing::Test
43 {
44   public:
45     using MockedI2CInterface = i2c::MockedI2CInterface;
46     using I2CInterface = i2c::I2CInterface;
47 
TestUpdater()48     TestUpdater()
49     {
50         setupDeviceSysfs();
51     }
~TestUpdater()52     ~TestUpdater()
53     {
54         fs::remove_all(tmpDir);
55     }
56 
setupDeviceSysfs()57     void setupDeviceSysfs()
58     {
59         auto tmpPath = fs::temp_directory_path();
60         tmpDir = (tmpPath / "test_XXXXXX");
61         if (!mkdtemp(tmpDir.data()))
62         {
63             throw "Failed to create temp dir";
64         }
65         // Create device path with symbol link
66         realDevicePath = fs::path(tmpDir) / "devices/3-0068";
67         devPath = fs::path(tmpDir) / "i2c";
68         fs::create_directories(realDevicePath);
69         fs::create_directories(realDevicePath / "driver");
70         fs::create_directories(devPath);
71         devPath /= "3-0068";
72         fs::create_directory_symlink(realDevicePath, devPath);
73     }
74 
getMockedI2c()75     MockedI2CInterface& getMockedI2c()
76     {
77         return *reinterpret_cast<MockedI2CInterface*>(updater->i2c.get());
78     }
79 
80     std::shared_ptr<I2CInterface> stolenI2C;
81     std::unique_ptr<Updater> updater;
82     fs::path realDevicePath;
83     fs::path devPath;
84     std::string tmpDir;
85     std::string psuInventoryPath = "/com/example/psu";
86     std::string imageDir = "/tmp/image/xxx";
87 };
88 
TEST_F(TestUpdater,ctordtor)89 TEST_F(TestUpdater, ctordtor)
90 {
91     updater = std::make_unique<Updater>(psuInventoryPath, devPath, imageDir);
92 }
93 
TEST_F(TestUpdater,doUpdate)94 TEST_F(TestUpdater, doUpdate)
95 {
96     updater = std::make_unique<Updater>(psuInventoryPath, devPath, imageDir);
97     updater->createI2CDevice();
98     auto& i2c = getMockedI2c();
99 
100     EXPECT_CALL(i2c, write(0xf0, 12, _, I2CInterface::Mode::SMBUS));
101     EXPECT_CALL(i2c, write(0xf1, An<uint8_t>()));
102     EXPECT_CALL(i2c, read(0xf1, An<uint8_t&>()));
103     updater->doUpdate();
104 }
105 
TEST_F(TestUpdater,getDeviceName)106 TEST_F(TestUpdater, getDeviceName)
107 {
108     auto ret = internal::getDeviceName("");
109     EXPECT_TRUE(ret.empty());
110 
111     ret = internal::getDeviceName("/sys/bus/i2c/devices/3-0069");
112     EXPECT_EQ("3-0069", ret);
113 
114     ret = internal::getDeviceName("/sys/bus/i2c/devices/3-0069/");
115     EXPECT_EQ("3-0069", ret);
116 }
117 
TEST_F(TestUpdater,parseDeviceName)118 TEST_F(TestUpdater, parseDeviceName)
119 {
120     auto [id, addr] = internal::parseDeviceName("3-0068");
121     EXPECT_EQ(3, id);
122     EXPECT_EQ(0x68, addr);
123 
124     std::tie(id, addr) = internal::parseDeviceName("11-0069");
125     EXPECT_EQ(11, id);
126     EXPECT_EQ(0x69, addr);
127 
128     EXPECT_THROW(internal::parseDeviceName("no-number"), std::invalid_argument);
129 
130     EXPECT_DEATH(internal::parseDeviceName("invalid"), "");
131 }
132