1 /* 2 * Copyright (C) 2016 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 #define LOG_TAG "LibHidlTest" 18 19 #pragma clang diagnostic push 20 #pragma clang diagnostic fatal "-Wpadded" 21 #include <hidl/HidlInternal.h> 22 #include <hidl/HidlSupport.h> 23 #pragma clang diagnostic pop 24 25 #include <android-base/logging.h> 26 #include <android/hidl/memory/1.0/IMemory.h> 27 #include <gmock/gmock.h> 28 #include <gtest/gtest.h> 29 #include <hidl/ServiceManagement.h> 30 #include <hidl/Status.h> 31 #include <hidl/TaskRunner.h> 32 #include <condition_variable> 33 #include <fstream> 34 #include <vector> 35 36 #ifdef __ANDROID__ 37 static bool kAndroid = true; 38 #else 39 static bool kAndroid = false; 40 #endif 41 42 #define EXPECT_ARRAYEQ(__a1__, __a2__, __size__) EXPECT_TRUE(isArrayEqual(__a1__, __a2__, __size__)) 43 #define EXPECT_2DARRAYEQ(__a1__, __a2__, __size1__, __size2__) \ 44 EXPECT_TRUE(is2dArrayEqual(__a1__, __a2__, __size1__, __size2__)) 45 46 template<typename T, typename S> 47 static inline bool isArrayEqual(const T arr1, const S arr2, size_t size) { 48 for(size_t i = 0; i < size; i++) 49 if(arr1[i] != arr2[i]) 50 return false; 51 return true; 52 } 53 54 template<typename T, typename S> 55 static inline bool is2dArrayEqual(const T arr1, const S arr2, size_t size1, size_t size2) { 56 for(size_t i = 0; i < size1; i++) 57 for (size_t j = 0; j < size2; j++) 58 if(arr1[i][j] != arr2[i][j]) 59 return false; 60 return true; 61 } 62 63 bool isLibraryOpen(const std::string& lib) { 64 std::ifstream ifs("/proc/self/maps"); 65 for (std::string line; std::getline(ifs, line);) { 66 if (line.size() >= lib.size() && line.substr(line.size() - lib.size()) == lib) { 67 return true; 68 } 69 } 70 71 return false; 72 } 73 74 class LibHidlTest : public ::testing::Test { 75 public: 76 virtual void SetUp() override { 77 } 78 virtual void TearDown() override { 79 } 80 }; 81 82 TEST_F(LibHidlTest, StringTest) { 83 using android::hardware::hidl_string; 84 hidl_string s; // empty constructor 85 EXPECT_STREQ(s.c_str(), ""); 86 hidl_string s1 = "s1"; // copy = from cstr 87 EXPECT_STREQ(s1.c_str(), "s1"); 88 hidl_string s2("s2"); // copy constructor from cstr 89 EXPECT_STREQ(s2.c_str(), "s2"); 90 hidl_string s2a(nullptr); // copy constructor from null cstr 91 EXPECT_STREQ("", s2a.c_str()); 92 s2a = nullptr; // = from nullptr cstr 93 EXPECT_STREQ(s2a.c_str(), ""); 94 hidl_string s3 = hidl_string("s3"); // move = 95 EXPECT_STREQ(s3.c_str(), "s3"); 96 hidl_string s4 = hidl_string("12345", 3); // copy constructor from cstr w/ length 97 EXPECT_STREQ(s4.c_str(), "123"); 98 hidl_string s5(hidl_string(hidl_string("s5"))); // move constructor 99 EXPECT_STREQ(s5.c_str(), "s5"); 100 hidl_string s6(std::string("s6")); // copy constructor from std::string 101 EXPECT_STREQ(s6.c_str(), "s6"); 102 hidl_string s7 = std::string("s7"); // copy = from std::string 103 EXPECT_STREQ(s7.c_str(), "s7"); 104 hidl_string s8(s7); // copy constructor // NOLINT, test the copy constructor 105 EXPECT_STREQ(s8.c_str(), "s7"); 106 hidl_string s9 = s8; // copy = // NOLINT, test the copy operator 107 EXPECT_STREQ(s9.c_str(), "s7"); 108 char myCString[20] = "myCString"; 109 s.setToExternal(&myCString[0], strlen(myCString)); 110 EXPECT_STREQ(s.c_str(), "myCString"); 111 myCString[2] = 'D'; 112 EXPECT_STREQ(s.c_str(), "myDString"); 113 s.clear(); // should not affect myCString 114 EXPECT_STREQ(myCString, "myDString"); 115 116 // casts 117 s = "great"; 118 std::string myString = s; 119 const char *anotherCString = s.c_str(); 120 EXPECT_EQ(myString, "great"); 121 EXPECT_STREQ(anotherCString, "great"); 122 123 const hidl_string t = "not so great"; 124 std::string myTString = t; 125 const char * anotherTCString = t.c_str(); 126 EXPECT_EQ(myTString, "not so great"); 127 EXPECT_STREQ(anotherTCString, "not so great"); 128 129 // Assignment from hidl_string to std::string 130 std::string tgt; 131 hidl_string src("some stuff"); 132 tgt = src; 133 EXPECT_STREQ(tgt.c_str(), "some stuff"); 134 135 // Stream output operator 136 hidl_string msg("hidl_string works with operator<<"); 137 std::cout << msg; 138 139 // Comparisons 140 const char * cstr1 = "abc"; 141 std::string string1(cstr1); 142 hidl_string hs1(cstr1); 143 const char * cstrE = "abc"; 144 std::string stringE(cstrE); 145 hidl_string hsE(cstrE); 146 const char * cstrNE = "ABC"; 147 std::string stringNE(cstrNE); 148 hidl_string hsNE(cstrNE); 149 const char * cstr2 = "def"; 150 std::string string2(cstr2); 151 hidl_string hs2(cstr2); 152 153 EXPECT_TRUE(hs1 == hsE); 154 EXPECT_FALSE(hs1 == hsNE); 155 EXPECT_TRUE(hs1 == cstrE); 156 EXPECT_FALSE(hs1 == cstrNE); 157 EXPECT_TRUE(hs1 == stringE); 158 EXPECT_FALSE(hs1 == stringNE); 159 EXPECT_FALSE(hs1 != hsE); 160 EXPECT_TRUE(hs1 != hsNE); 161 EXPECT_FALSE(hs1 != cstrE); 162 EXPECT_TRUE(hs1 != cstrNE); 163 EXPECT_FALSE(hs1 != stringE); 164 EXPECT_TRUE(hs1 != stringNE); 165 166 EXPECT_TRUE(hs1 < hs2); 167 EXPECT_FALSE(hs2 < hs1); 168 EXPECT_TRUE(hs2 > hs1); 169 EXPECT_FALSE(hs1 > hs2); 170 EXPECT_TRUE(hs1 <= hs1); 171 EXPECT_TRUE(hs1 <= hs2); 172 EXPECT_FALSE(hs2 <= hs1); 173 EXPECT_TRUE(hs1 >= hs1); 174 EXPECT_TRUE(hs2 >= hs1); 175 EXPECT_FALSE(hs2 <= hs1); 176 } 177 178 TEST_F(LibHidlTest, MemoryTest) { 179 using android::hardware::hidl_memory; 180 181 hidl_memory mem1 = hidl_memory(); // default constructor 182 hidl_memory mem2 = mem1; // copy constructor (nullptr), NOLINT 183 184 EXPECT_EQ(nullptr, mem2.handle()); 185 186 native_handle_t* testHandle = native_handle_create(0 /* numInts */, 0 /* numFds */); 187 188 hidl_memory mem3 = hidl_memory("foo", testHandle, 42 /* size */); // owns testHandle 189 hidl_memory mem4 = mem3; // copy constructor (regular handle), NOLINT 190 191 EXPECT_EQ(mem3.name(), mem4.name()); 192 EXPECT_EQ(mem3.size(), mem4.size()); 193 EXPECT_NE(nullptr, mem4.handle()); 194 EXPECT_NE(mem3.handle(), mem4.handle()); // check handle cloned 195 196 hidl_memory mem5 = hidl_memory("foo", nullptr, 0); // hidl memory works with nullptr handle 197 hidl_memory mem6 = mem5; // NOLINT, test copying 198 EXPECT_EQ(nullptr, mem5.handle()); 199 EXPECT_EQ(nullptr, mem6.handle()); 200 } 201 202 TEST_F(LibHidlTest, VecInitTest) { 203 using android::hardware::hidl_vec; 204 using std::vector; 205 int32_t array[] = {5, 6, 7}; 206 vector<int32_t> v(array, array + 3); 207 208 hidl_vec<int32_t> hv0(3); // size 209 EXPECT_EQ(hv0.size(), 3ul); // cannot say anything about its contents 210 211 hidl_vec<int32_t> hv1 = v; // copy = 212 EXPECT_ARRAYEQ(hv1, array, 3); 213 EXPECT_ARRAYEQ(hv1, v, 3); 214 hidl_vec<int32_t> hv2(v); // copy constructor 215 EXPECT_ARRAYEQ(hv2, v, 3); 216 217 vector<int32_t> v2 = hv1; // cast 218 EXPECT_ARRAYEQ(v2, v, 3); 219 220 hidl_vec<int32_t> v3 = {5, 6, 7}; // initializer_list 221 EXPECT_EQ(v3.size(), 3ul); 222 EXPECT_ARRAYEQ(v3, array, v3.size()); 223 } 224 225 TEST_F(LibHidlTest, VecIterTest) { 226 int32_t array[] = {5, 6, 7}; 227 android::hardware::hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3); 228 229 auto iter = hv1.begin(); // iterator begin() 230 EXPECT_EQ(*iter++, 5); 231 EXPECT_EQ(*iter, 6); 232 EXPECT_EQ(*++iter, 7); 233 EXPECT_EQ(*iter--, 7); 234 EXPECT_EQ(*iter, 6); 235 EXPECT_EQ(*--iter, 5); 236 237 iter += 2; 238 EXPECT_EQ(*iter, 7); 239 iter -= 2; 240 EXPECT_EQ(*iter, 5); 241 242 iter++; 243 EXPECT_EQ(*(iter + 1), 7); 244 EXPECT_EQ(*(1 + iter), 7); 245 EXPECT_EQ(*(iter - 1), 5); 246 EXPECT_EQ(*iter, 6); 247 248 auto five = iter - 1; 249 auto seven = iter + 1; 250 EXPECT_EQ(seven - five, 2); 251 EXPECT_EQ(five - seven, -2); 252 253 EXPECT_LT(five, seven); 254 EXPECT_LE(five, seven); 255 EXPECT_GT(seven, five); 256 EXPECT_GE(seven, five); 257 258 EXPECT_EQ(seven[0], 7); 259 EXPECT_EQ(five[1], 6); 260 } 261 262 TEST_F(LibHidlTest, VecIterForTest) { 263 using android::hardware::hidl_vec; 264 int32_t array[] = {5, 6, 7}; 265 hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3); 266 267 int32_t sum = 0; // range based for loop interoperability 268 for (auto &&i: hv1) { 269 sum += i; 270 } 271 EXPECT_EQ(sum, 5+6+7); 272 273 for (auto iter = hv1.begin(); iter < hv1.end(); ++iter) { 274 *iter += 10; 275 } 276 const hidl_vec<int32_t> &v4 = hv1; 277 sum = 0; 278 for (const auto &i : v4) { 279 sum += i; 280 } 281 EXPECT_EQ(sum, 15+16+17); 282 } 283 284 TEST_F(LibHidlTest, VecEqTest) { 285 android::hardware::hidl_vec<int32_t> hv1{5, 6, 7}; 286 android::hardware::hidl_vec<int32_t> hv2{5, 6, 7}; 287 android::hardware::hidl_vec<int32_t> hv3{5, 6, 8}; 288 289 // use the == and != operator intentionally here 290 EXPECT_TRUE(hv1 == hv2); 291 EXPECT_TRUE(hv1 != hv3); 292 } 293 294 TEST_F(LibHidlTest, VecEqInitializerTest) { 295 std::vector<int32_t> reference{5, 6, 7}; 296 android::hardware::hidl_vec<int32_t> hv1{1, 2, 3}; 297 hv1 = {5, 6, 7}; 298 android::hardware::hidl_vec<int32_t> hv2; 299 hv2 = {5, 6, 7}; 300 android::hardware::hidl_vec<int32_t> hv3; 301 hv3 = {5, 6, 8}; 302 303 // use the == and != operator intentionally here 304 EXPECT_TRUE(hv1 == hv2); 305 EXPECT_TRUE(hv1 == reference); 306 EXPECT_TRUE(hv1 != hv3); 307 } 308 309 TEST_F(LibHidlTest, VecRangeCtorTest) { 310 struct ConvertibleType { 311 int val; 312 313 explicit ConvertibleType(int val) : val(val) {} 314 explicit operator int() const { return val; } 315 bool operator==(const int& other) const { return val == other; } 316 }; 317 318 std::vector<ConvertibleType> input{ 319 ConvertibleType(1), ConvertibleType(2), ConvertibleType(3), 320 }; 321 322 android::hardware::hidl_vec<int> hv(input.begin(), input.end()); 323 324 EXPECT_EQ(input.size(), hv.size()); 325 int sum = 0; 326 for (unsigned i = 0; i < input.size(); i++) { 327 EXPECT_EQ(input[i], hv[i]); 328 sum += hv[i]; 329 } 330 EXPECT_EQ(sum, 1 + 2 + 3); 331 } 332 333 struct FailsIfCopied { 334 FailsIfCopied() {} 335 336 // add failure if copied since in general this can be expensive 337 FailsIfCopied(const FailsIfCopied& o) { *this = o; } 338 FailsIfCopied& operator=(const FailsIfCopied&) { 339 ADD_FAILURE() << "FailsIfCopied copied"; 340 return *this; 341 } 342 343 // fine to move this type since in general this is cheaper 344 FailsIfCopied(FailsIfCopied&& o) = default; 345 FailsIfCopied& operator=(FailsIfCopied&&) = default; 346 }; 347 348 TEST_F(LibHidlTest, VecResizeNoCopy) { 349 using android::hardware::hidl_vec; 350 351 hidl_vec<FailsIfCopied> noCopies; 352 noCopies.resize(3); // instantiates three elements 353 354 FailsIfCopied* oldPointer = noCopies.data(); 355 356 noCopies.resize(6); // should move three elements, not copy 357 358 // oldPointer should be invalidated at this point. 359 // hidl_vec doesn't currently try to realloc but if it ever switches 360 // to an implementation that does, this test wouldn't do anything. 361 EXPECT_NE(oldPointer, noCopies.data()); 362 } 363 364 TEST_F(LibHidlTest, VecFindTest) { 365 using android::hardware::hidl_vec; 366 hidl_vec<int32_t> hv1 = {10, 20, 30, 40}; 367 const hidl_vec<int32_t> hv2 = {1, 2, 3, 4}; 368 369 auto it = hv1.find(20); 370 EXPECT_EQ(20, *it); 371 *it = 21; 372 EXPECT_EQ(21, *it); 373 it = hv1.find(20); 374 EXPECT_EQ(hv1.end(), it); 375 it = hv1.find(21); 376 EXPECT_EQ(21, *it); 377 378 auto cit = hv2.find(4); 379 EXPECT_EQ(4, *cit); 380 } 381 382 TEST_F(LibHidlTest, VecContainsTest) { 383 using android::hardware::hidl_vec; 384 hidl_vec<int32_t> hv1 = {10, 20, 30, 40}; 385 const hidl_vec<int32_t> hv2 = {0, 1, 2, 3, 4}; 386 387 EXPECT_TRUE(hv1.contains(10)); 388 EXPECT_TRUE(hv1.contains(40)); 389 EXPECT_FALSE(hv1.contains(1)); 390 EXPECT_FALSE(hv1.contains(0)); 391 EXPECT_TRUE(hv2.contains(0)); 392 EXPECT_FALSE(hv2.contains(10)); 393 394 hv1[0] = 11; 395 EXPECT_FALSE(hv1.contains(10)); 396 EXPECT_TRUE(hv1.contains(11)); 397 } 398 399 TEST_F(LibHidlTest, ArrayTest) { 400 using android::hardware::hidl_array; 401 int32_t array[] = {5, 6, 7}; 402 403 hidl_array<int32_t, 3> ha(array); 404 EXPECT_ARRAYEQ(ha, array, 3); 405 } 406 407 TEST_F(LibHidlTest, TaskRunnerTest) { 408 using android::hardware::details::TaskRunner; 409 using namespace std::chrono_literals; 410 411 std::condition_variable cv; 412 std::mutex m; 413 414 TaskRunner tr; 415 tr.start(1 /* limit */); 416 bool flag = false; 417 tr.push([&] { 418 flag = true; 419 cv.notify_all(); 420 }); 421 422 std::unique_lock<std::mutex> lock(m); 423 424 // 1s so this doesn't deadlock. This isn't a performance test. 425 EXPECT_TRUE(cv.wait_for(lock, 1s, [&]{return flag;})); 426 EXPECT_TRUE(flag); 427 } 428 429 TEST_F(LibHidlTest, StringCmpTest) { 430 using android::hardware::hidl_string; 431 const char * s = "good"; 432 hidl_string hs(s); 433 EXPECT_NE(hs.c_str(), s); 434 435 EXPECT_TRUE(hs == s); // operator == 436 EXPECT_TRUE(s == hs); 437 438 EXPECT_FALSE(hs != s); // operator == 439 EXPECT_FALSE(s != hs); 440 } 441 442 template <typename T> 443 void great(android::hardware::hidl_vec<T>) {} 444 445 TEST_F(LibHidlTest, VecCopyTest) { 446 android::hardware::hidl_vec<int32_t> v; 447 great(v); 448 } 449 450 TEST_F(LibHidlTest, StdArrayTest) { 451 using android::hardware::hidl_array; 452 hidl_array<int32_t, 5> array{(int32_t[5]){1, 2, 3, 4, 5}}; 453 std::array<int32_t, 5> stdArray = array; 454 EXPECT_ARRAYEQ(array.data(), stdArray.data(), 5); 455 hidl_array<int32_t, 5> array2 = stdArray; 456 EXPECT_ARRAYEQ(array.data(), array2.data(), 5); 457 } 458 459 TEST_F(LibHidlTest, MultiDimStdArrayTest) { 460 using android::hardware::hidl_array; 461 hidl_array<int32_t, 2, 3> array; 462 for (size_t i = 0; i < 2; i++) { 463 for (size_t j = 0; j < 3; j++) { 464 array[i][j] = i + j + i * j; 465 } 466 } 467 std::array<std::array<int32_t, 3>, 2> stdArray = array; 468 EXPECT_2DARRAYEQ(array, stdArray, 2, 3); 469 hidl_array<int32_t, 2, 3> array2 = stdArray; 470 EXPECT_2DARRAYEQ(array, array2, 2, 3); 471 } 472 473 TEST_F(LibHidlTest, HidlVersionTest) { 474 using android::hardware::hidl_version; 475 hidl_version v1_0{1, 0}; 476 EXPECT_EQ(1, v1_0.get_major()); 477 EXPECT_EQ(0, v1_0.get_minor()); 478 hidl_version v2_0{2, 0}; 479 hidl_version v2_1{2, 1}; 480 hidl_version v2_2{2, 2}; 481 hidl_version v3_0{3, 0}; 482 hidl_version v3_0b{3,0}; 483 484 EXPECT_TRUE(v1_0 < v2_0); 485 EXPECT_TRUE(v1_0 != v2_0); 486 EXPECT_TRUE(v2_0 < v2_1); 487 EXPECT_TRUE(v2_1 < v3_0); 488 EXPECT_TRUE(v2_0 > v1_0); 489 EXPECT_TRUE(v2_0 != v1_0); 490 EXPECT_TRUE(v2_1 > v2_0); 491 EXPECT_TRUE(v3_0 > v2_1); 492 EXPECT_TRUE(v3_0 == v3_0b); 493 EXPECT_FALSE(v3_0 != v3_0b); 494 EXPECT_TRUE(v3_0 <= v3_0b); 495 EXPECT_TRUE(v2_2 <= v3_0); 496 EXPECT_TRUE(v3_0 >= v3_0b); 497 EXPECT_TRUE(v3_0 >= v2_2); 498 } 499 500 TEST_F(LibHidlTest, ReturnMoveTest) { 501 using namespace ::android; 502 using ::android::hardware::Return; 503 using ::android::hardware::Status; 504 Return<void> ret{Status::fromStatusT(DEAD_OBJECT)}; 505 ret.isOk(); 506 ret = {Status::fromStatusT(DEAD_OBJECT)}; 507 ret.isOk(); 508 } 509 510 TEST_F(LibHidlTest, ReturnTest) { 511 using ::android::DEAD_OBJECT; 512 using ::android::hardware::Return; 513 using ::android::hardware::Status; 514 using ::android::hardware::hidl_string; 515 516 EXPECT_FALSE(Return<void>(Status::fromStatusT(DEAD_OBJECT)).isOk()); 517 EXPECT_TRUE(Return<void>(Status::ok()).isOk()); 518 519 hidl_string one = "1"; 520 hidl_string two = "2"; 521 Return<hidl_string> ret = Return<hidl_string>(Status::fromStatusT(DEAD_OBJECT)); 522 523 EXPECT_EQ(one, Return<hidl_string>(one).withDefault(two)); 524 EXPECT_EQ(two, ret.withDefault(two)); 525 526 hidl_string&& moved = ret.withDefault(std::move(two)); 527 EXPECT_EQ("2", moved); 528 529 const hidl_string three = "3"; 530 EXPECT_EQ(three, ret.withDefault(three)); 531 } 532 533 TEST_F(LibHidlTest, ReturnDies) { 534 using ::android::hardware::Return; 535 using ::android::hardware::Status; 536 537 EXPECT_DEATH({ Return<void>(Status::fromStatusT(-EBUSY)); }, ""); 538 EXPECT_DEATH({ Return<void>(Status::fromStatusT(-EBUSY)).isDeadObject(); }, ""); 539 EXPECT_DEATH( 540 { 541 Return<int> ret = Return<int>(Status::fromStatusT(-EBUSY)); 542 int foo = ret; // should crash here 543 (void)foo; 544 ret.isOk(); 545 }, 546 ""); 547 } 548 549 TEST_F(LibHidlTest, DetectUncheckedReturn) { 550 using ::android::hardware::HidlReturnRestriction; 551 using ::android::hardware::Return; 552 using ::android::hardware::setProcessHidlReturnRestriction; 553 using ::android::hardware::Status; 554 555 setProcessHidlReturnRestriction(HidlReturnRestriction::FATAL_IF_UNCHECKED); 556 557 EXPECT_DEATH( 558 { 559 auto ret = Return<void>(Status::ok()); 560 (void)ret; 561 }, 562 ""); 563 EXPECT_DEATH( 564 { 565 auto ret = Return<void>(Status::ok()); 566 ret = Return<void>(Status::ok()); 567 ret.isOk(); 568 }, 569 ""); 570 571 auto ret = Return<void>(Status::ok()); 572 (void)ret.isOk(); 573 ret = Return<void>(Status::ok()); 574 (void)ret.isOk(); 575 576 setProcessHidlReturnRestriction(HidlReturnRestriction::NONE); 577 } 578 579 std::string toString(const ::android::hardware::Status &s) { 580 using ::android::hardware::operator<<; 581 std::ostringstream oss; 582 oss << s; 583 return oss.str(); 584 } 585 586 TEST_F(LibHidlTest, StatusStringTest) { 587 using namespace ::android; 588 using ::android::hardware::Status; 589 using ::testing::HasSubstr; 590 591 EXPECT_EQ(toString(Status::ok()), "No error"); 592 593 EXPECT_THAT(toString(Status::fromStatusT(DEAD_OBJECT)), HasSubstr("DEAD_OBJECT")); 594 595 EXPECT_THAT(toString(Status::fromStatusT(-EBUSY)), HasSubstr("busy")); 596 597 EXPECT_THAT(toString(Status::fromExceptionCode(Status::EX_NULL_POINTER)), 598 HasSubstr("EX_NULL_POINTER")); 599 } 600 601 TEST_F(LibHidlTest, PreloadTest) { 602 // HIDL doesn't have support to load passthrough implementations on host, but we 603 // could do this by loading implementations from the output directory 604 if (!kAndroid) GTEST_SKIP(); 605 606 using ::android::hardware::preloadPassthroughService; 607 using ::android::hidl::memory::V1_0::IMemory; 608 609 // installed on all devices by default in both bitnesses and not otherwise a dependency of this 610 // test. 611 static const std::string kLib = "[email protected]"; 612 613 EXPECT_FALSE(isLibraryOpen(kLib)); 614 preloadPassthroughService<IMemory>(); 615 EXPECT_TRUE(isLibraryOpen(kLib)); 616 } 617 618 template <typename T, size_t start, size_t end> 619 static void assertZeroInRange(const T* t) { 620 static_assert(start < sizeof(T)); 621 static_assert(end <= sizeof(T)); 622 623 const uint8_t* ptr = reinterpret_cast<const uint8_t*>(t); 624 625 for (size_t i = start; i < end; i++) { 626 EXPECT_EQ(0, ptr[i]); 627 } 628 } 629 630 template <typename T, size_t start, size_t end> 631 static void uninitTest() { 632 uint8_t buf[sizeof(T)]; 633 memset(buf, 0xFF, sizeof(T)); 634 635 T* type = new (buf) T; 636 assertZeroInRange<T, start, end>(type); 637 type->~T(); 638 } 639 640 TEST_F(LibHidlTest, HidlVecUninit) { 641 using ::android::hardware::hidl_vec; 642 struct SomeType {}; 643 static_assert(sizeof(hidl_vec<SomeType>) == 16); 644 645 // padding after mOwnsBuffer 646 uninitTest<hidl_vec<SomeType>, 13, 16>(); 647 } 648 TEST_F(LibHidlTest, HidlHandleUninit) { 649 using ::android::hardware::hidl_handle; 650 static_assert(sizeof(hidl_handle) == 16); 651 652 // padding after mOwnsHandle 653 uninitTest<hidl_handle, 9, 16>(); 654 } 655 TEST_F(LibHidlTest, HidlStringUninit) { 656 using ::android::hardware::hidl_string; 657 static_assert(sizeof(hidl_string) == 16); 658 659 // padding after mOwnsBuffer 660 uninitTest<hidl_string, 13, 16>(); 661 } 662 663 int main(int argc, char **argv) { 664 ::testing::InitGoogleTest(&argc, argv); 665 return RUN_ALL_TESTS(); 666 } 667