Shawn McCarney | 88d5b69 | 2020-02-25 10:39:02 -0600 | [diff] [blame] | 1 | /** |
| 2 | * Copyright © 2020 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 "action_environment.hpp" |
| 17 | #include "action_error.hpp" |
| 18 | #include "device.hpp" |
| 19 | #include "i2c_interface.hpp" |
| 20 | #include "i2c_write_bit_action.hpp" |
| 21 | #include "id_map.hpp" |
| 22 | #include "mocked_i2c_interface.hpp" |
| 23 | |
| 24 | #include <cstdint> |
| 25 | #include <memory> |
| 26 | #include <stdexcept> |
| 27 | #include <string> |
| 28 | #include <utility> |
| 29 | |
| 30 | #include <gmock/gmock.h> |
| 31 | #include <gtest/gtest.h> |
| 32 | |
| 33 | using namespace phosphor::power::regulators; |
| 34 | |
| 35 | using ::testing::A; |
| 36 | using ::testing::Return; |
| 37 | using ::testing::SetArgReferee; |
| 38 | using ::testing::Throw; |
| 39 | using ::testing::TypedEq; |
| 40 | |
| 41 | TEST(I2CWriteBitActionTests, Constructor) |
| 42 | { |
| 43 | // Test where works |
| 44 | try |
| 45 | { |
| 46 | I2CWriteBitAction action{0x7C, 2, 0}; |
| 47 | EXPECT_EQ(action.getRegister(), 0x7C); |
| 48 | EXPECT_EQ(action.getPosition(), 2); |
| 49 | EXPECT_EQ(action.getValue(), 0); |
| 50 | } |
| 51 | catch (...) |
| 52 | { |
| 53 | ADD_FAILURE() << "Should not have caught exception."; |
| 54 | } |
| 55 | |
| 56 | // Test where fails: Invalid bit position > 7 |
| 57 | try |
| 58 | { |
| 59 | I2CWriteBitAction action{0x7C, 8, 0}; |
| 60 | ADD_FAILURE() << "Should not have reached this line."; |
| 61 | } |
| 62 | catch (const std::invalid_argument& e) |
| 63 | { |
| 64 | EXPECT_STREQ(e.what(), "Invalid bit position: 8"); |
| 65 | } |
| 66 | catch (...) |
| 67 | { |
| 68 | ADD_FAILURE() << "Should not have caught exception."; |
| 69 | } |
| 70 | |
| 71 | // Test where fails: Invalid bit value > 1 |
| 72 | try |
| 73 | { |
| 74 | I2CWriteBitAction action{0x7C, 2, 2}; |
| 75 | ADD_FAILURE() << "Should not have reached this line."; |
| 76 | } |
| 77 | catch (const std::invalid_argument& e) |
| 78 | { |
| 79 | EXPECT_STREQ(e.what(), "Invalid bit value: 2"); |
| 80 | } |
| 81 | catch (...) |
| 82 | { |
| 83 | ADD_FAILURE() << "Should not have caught exception."; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | TEST(I2CWriteBitActionTests, Execute) |
| 88 | { |
| 89 | // Test where works: Value is 0 |
| 90 | try |
| 91 | { |
| 92 | // Create mock I2CInterface: read() returns value 0xB6 |
| 93 | std::unique_ptr<i2c::MockedI2CInterface> i2cInterface = |
| 94 | std::make_unique<i2c::MockedI2CInterface>(); |
| 95 | EXPECT_CALL(*i2cInterface, isOpen).Times(1).WillOnce(Return(true)); |
| 96 | EXPECT_CALL(*i2cInterface, read(0xA0, A<uint8_t&>())) |
| 97 | .Times(1) |
| 98 | .WillOnce(SetArgReferee<1>(0xB6)); |
| 99 | EXPECT_CALL(*i2cInterface, |
| 100 | write(TypedEq<uint8_t>(0xA0), TypedEq<uint8_t>(0x96))) |
| 101 | .Times(1); |
| 102 | |
| 103 | // Create Device, IDMap, and ActionEnvironment |
| 104 | Device device{"reg1", true, "/system/chassis/motherboard/reg1", |
| 105 | std::move(i2cInterface)}; |
| 106 | IDMap idMap{}; |
| 107 | idMap.addDevice(device); |
| 108 | ActionEnvironment env{idMap, "reg1"}; |
| 109 | |
| 110 | // Register value : 0xB6 = 1011 0110 |
| 111 | // 0 in position 5 : 0x00 = --0- ---- |
| 112 | // New register value: 0x96 = 1001 0110 |
| 113 | I2CWriteBitAction action{0xA0, 5, 0}; |
| 114 | EXPECT_EQ(action.execute(env), true); |
| 115 | } |
| 116 | catch (...) |
| 117 | { |
| 118 | ADD_FAILURE() << "Should not have caught exception."; |
| 119 | } |
| 120 | |
| 121 | // Test where works: Value is 1 |
| 122 | try |
| 123 | { |
| 124 | // Create mock I2CInterface: read() returns value 0x96 |
| 125 | std::unique_ptr<i2c::MockedI2CInterface> i2cInterface = |
| 126 | std::make_unique<i2c::MockedI2CInterface>(); |
| 127 | EXPECT_CALL(*i2cInterface, isOpen).Times(1).WillOnce(Return(true)); |
| 128 | EXPECT_CALL(*i2cInterface, read(0x7C, A<uint8_t&>())) |
| 129 | .Times(1) |
| 130 | .WillOnce(SetArgReferee<1>(0x96)); |
| 131 | EXPECT_CALL(*i2cInterface, |
| 132 | write(TypedEq<uint8_t>(0x7C), TypedEq<uint8_t>(0xB6))) |
| 133 | .Times(1); |
| 134 | |
| 135 | // Create Device, IDMap, and ActionEnvironment |
| 136 | Device device{"reg1", true, "/system/chassis/motherboard/reg1", |
| 137 | std::move(i2cInterface)}; |
| 138 | IDMap idMap{}; |
| 139 | idMap.addDevice(device); |
| 140 | ActionEnvironment env{idMap, "reg1"}; |
| 141 | |
| 142 | // Register value : 0x96 = 1001 0110 |
| 143 | // 1 in position 5 : 0x20 = 0010 0000 |
| 144 | // New register value: 0xB6 = 1011 0110 |
| 145 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 146 | EXPECT_EQ(action.execute(env), true); |
| 147 | } |
| 148 | catch (...) |
| 149 | { |
| 150 | ADD_FAILURE() << "Should not have caught exception."; |
| 151 | } |
| 152 | |
| 153 | // Test where fails: Getting I2CInterface fails |
| 154 | try |
| 155 | { |
| 156 | // Create IDMap and ActionEnvironment |
| 157 | IDMap idMap{}; |
| 158 | ActionEnvironment env{idMap, "reg1"}; |
| 159 | |
| 160 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 161 | action.execute(env); |
| 162 | ADD_FAILURE() << "Should not have reached this line."; |
| 163 | } |
| 164 | catch (const std::invalid_argument& e) |
| 165 | { |
| 166 | EXPECT_STREQ(e.what(), "Unable to find device with ID \"reg1\""); |
| 167 | } |
| 168 | catch (...) |
| 169 | { |
| 170 | ADD_FAILURE() << "Should not have caught exception."; |
| 171 | } |
| 172 | |
| 173 | // Test where fails: Reading byte fails |
| 174 | try |
| 175 | { |
| 176 | // Create mock I2CInterface: read() throws an I2CException |
| 177 | std::unique_ptr<i2c::MockedI2CInterface> i2cInterface = |
| 178 | std::make_unique<i2c::MockedI2CInterface>(); |
| 179 | EXPECT_CALL(*i2cInterface, isOpen).Times(1).WillOnce(Return(true)); |
| 180 | EXPECT_CALL(*i2cInterface, read(0x7C, A<uint8_t&>())) |
| 181 | .Times(1) |
| 182 | .WillOnce(Throw( |
| 183 | i2c::I2CException{"Failed to read byte", "/dev/i2c-1", 0x70})); |
| 184 | EXPECT_CALL(*i2cInterface, write(A<uint8_t>(), A<uint8_t>())).Times(0); |
| 185 | |
| 186 | // Create Device, IDMap, and ActionEnvironment |
| 187 | Device device{"reg1", true, "/system/chassis/motherboard/reg1", |
| 188 | std::move(i2cInterface)}; |
| 189 | IDMap idMap{}; |
| 190 | idMap.addDevice(device); |
| 191 | ActionEnvironment env{idMap, "reg1"}; |
| 192 | |
| 193 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 194 | action.execute(env); |
| 195 | ADD_FAILURE() << "Should not have reached this line."; |
| 196 | } |
| 197 | catch (const ActionError& e) |
| 198 | { |
| 199 | EXPECT_STREQ(e.what(), "ActionError: i2c_write_bit: { register: " |
| 200 | "0x7C, position: 5, value: 1 }"); |
| 201 | try |
| 202 | { |
| 203 | // Re-throw inner I2CException |
| 204 | std::rethrow_if_nested(e); |
| 205 | ADD_FAILURE() << "Should not have reached this line."; |
| 206 | } |
| 207 | catch (const i2c::I2CException& ie) |
| 208 | { |
| 209 | EXPECT_STREQ( |
| 210 | ie.what(), |
| 211 | "I2CException: Failed to read byte: bus /dev/i2c-1, addr 0x70"); |
| 212 | } |
| 213 | catch (...) |
| 214 | { |
| 215 | ADD_FAILURE() << "Should not have caught exception."; |
| 216 | } |
| 217 | } |
| 218 | catch (...) |
| 219 | { |
| 220 | ADD_FAILURE() << "Should not have caught exception."; |
| 221 | } |
| 222 | |
| 223 | // Test where fails: Writing byte fails |
| 224 | try |
| 225 | { |
| 226 | // Create mock I2CInterface: read() returns value 0xB6, write() throws |
| 227 | // an I2CException |
| 228 | std::unique_ptr<i2c::MockedI2CInterface> i2cInterface = |
| 229 | std::make_unique<i2c::MockedI2CInterface>(); |
| 230 | EXPECT_CALL(*i2cInterface, isOpen).Times(1).WillOnce(Return(true)); |
| 231 | EXPECT_CALL(*i2cInterface, read(0xA0, A<uint8_t&>())) |
| 232 | .Times(1) |
| 233 | .WillOnce(SetArgReferee<1>(0xB6)); |
| 234 | EXPECT_CALL(*i2cInterface, |
| 235 | write(TypedEq<uint8_t>(0xA0), TypedEq<uint8_t>(0x96))) |
| 236 | .Times(1) |
| 237 | .WillOnce(Throw( |
| 238 | i2c::I2CException{"Failed to write byte", "/dev/i2c-1", 0x70})); |
| 239 | |
| 240 | // Create Device, IDMap, and ActionEnvironment |
| 241 | Device device{"reg1", true, "/system/chassis/motherboard/reg1", |
| 242 | std::move(i2cInterface)}; |
| 243 | IDMap idMap{}; |
| 244 | idMap.addDevice(device); |
| 245 | ActionEnvironment env{idMap, "reg1"}; |
| 246 | |
| 247 | // Register value : 0xB6 = 1011 0110 |
| 248 | // 0 in position 5 : 0x00 = --0- ---- |
| 249 | // New register value: 0x96 = 1001 0110 |
| 250 | I2CWriteBitAction action{0xA0, 5, 0}; |
| 251 | action.execute(env); |
| 252 | ADD_FAILURE() << "Should not have reached this line."; |
| 253 | } |
| 254 | catch (const ActionError& e) |
| 255 | { |
| 256 | EXPECT_STREQ(e.what(), "ActionError: i2c_write_bit: { register: " |
| 257 | "0xA0, position: 5, value: 0 }"); |
| 258 | try |
| 259 | { |
| 260 | // Re-throw inner I2CException |
| 261 | std::rethrow_if_nested(e); |
| 262 | ADD_FAILURE() << "Should not have reached this line."; |
| 263 | } |
| 264 | catch (const i2c::I2CException& ie) |
| 265 | { |
| 266 | EXPECT_STREQ(ie.what(), "I2CException: Failed to write byte: bus " |
| 267 | "/dev/i2c-1, addr 0x70"); |
| 268 | } |
| 269 | catch (...) |
| 270 | { |
| 271 | ADD_FAILURE() << "Should not have caught exception."; |
| 272 | } |
| 273 | } |
| 274 | catch (...) |
| 275 | { |
| 276 | ADD_FAILURE() << "Should not have caught exception."; |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | TEST(I2CWriteBitActionTests, GetRegister) |
| 281 | { |
| 282 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 283 | EXPECT_EQ(action.getRegister(), 0x7C); |
| 284 | } |
| 285 | |
| 286 | TEST(I2CWriteBitActionTests, GetPosition) |
| 287 | { |
| 288 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 289 | EXPECT_EQ(action.getPosition(), 5); |
| 290 | } |
| 291 | |
| 292 | TEST(I2CWriteBitActionTests, GetValue) |
| 293 | { |
| 294 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 295 | EXPECT_EQ(action.getValue(), 1); |
| 296 | } |
| 297 | |
| 298 | TEST(I2CWriteBitActionTests, ToString) |
| 299 | { |
| 300 | I2CWriteBitAction action{0x7C, 5, 1}; |
| 301 | EXPECT_EQ(action.toString(), |
| 302 | "i2c_write_bit: { register: 0x7C, position: 5, value: 1 }"); |
| 303 | } |