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 error "-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>
isArrayEqual(const T arr1,const S arr2,size_t size)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>
is2dArrayEqual(const T arr1,const S arr2,size_t size1,size_t size2)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
isLibraryOpen(const std::string & lib)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:
SetUp()76 virtual void SetUp() override {
77 }
TearDown()78 virtual void TearDown() override {
79 }
80 };
81
TEST_F(LibHidlTest,StringTest)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 // empty string optimization should apply for any constructor
TEST_F(LibHidlTest,HidlStringEmptyLiteralAllocation)179 TEST_F(LibHidlTest, HidlStringEmptyLiteralAllocation) {
180 using android::hardware::hidl_string;
181
182 hidl_string empty1;
183 hidl_string empty2("");
184 hidl_string empty3("foo", 0);
185 hidl_string empty4((std::string()));
186
187 EXPECT_EQ(empty1.c_str(), empty2.c_str());
188 EXPECT_EQ(empty1.c_str(), empty3.c_str());
189 EXPECT_EQ(empty1.c_str(), empty4.c_str());
190 }
191
TEST_F(LibHidlTest,MemoryTest)192 TEST_F(LibHidlTest, MemoryTest) {
193 using android::hardware::hidl_memory;
194
195 hidl_memory mem1 = hidl_memory(); // default constructor
196 hidl_memory mem2 = mem1; // copy constructor (nullptr), NOLINT
197
198 EXPECT_EQ(nullptr, mem2.handle());
199
200 native_handle_t* testHandle = native_handle_create(0 /* numInts */, 0 /* numFds */);
201
202 hidl_memory mem3 = hidl_memory("foo", testHandle, 42 /* size */); // owns testHandle
203 hidl_memory mem4 = mem3; // copy constructor (regular handle), NOLINT
204
205 EXPECT_EQ(mem3.name(), mem4.name());
206 EXPECT_EQ(mem3.size(), mem4.size());
207 EXPECT_NE(nullptr, mem4.handle());
208 EXPECT_NE(mem3.handle(), mem4.handle()); // check handle cloned
209
210 hidl_memory mem5 = hidl_memory("foo", nullptr, 0); // hidl memory works with nullptr handle
211 hidl_memory mem6 = mem5; // NOLINT, test copying
212 EXPECT_EQ(nullptr, mem5.handle());
213 EXPECT_EQ(nullptr, mem6.handle());
214 }
215
TEST_F(LibHidlTest,VecInitTest)216 TEST_F(LibHidlTest, VecInitTest) {
217 using android::hardware::hidl_vec;
218 using std::vector;
219 int32_t array[] = {5, 6, 7};
220 vector<int32_t> v(array, array + 3);
221
222 hidl_vec<int32_t> hv0(3); // size
223 EXPECT_EQ(hv0.size(), 3ul); // cannot say anything about its contents
224
225 hidl_vec<int32_t> hv1 = v; // copy =
226 EXPECT_ARRAYEQ(hv1, array, 3);
227 EXPECT_ARRAYEQ(hv1, v, 3);
228 hidl_vec<int32_t> hv2(v); // copy constructor
229 EXPECT_ARRAYEQ(hv2, v, 3);
230
231 vector<int32_t> v2 = hv1; // cast
232 EXPECT_ARRAYEQ(v2, v, 3);
233
234 hidl_vec<int32_t> v3 = {5, 6, 7}; // initializer_list
235 EXPECT_EQ(v3.size(), 3ul);
236 EXPECT_ARRAYEQ(v3, array, v3.size());
237 }
238
TEST_F(LibHidlTest,VecReleaseTest)239 TEST_F(LibHidlTest, VecReleaseTest) {
240 // this test indicates an inconsistency of behaviors which is undesirable.
241 // Perhaps hidl-vec should always allocate an empty vector whenever it
242 // exposes its data. Alternatively, perhaps it should always free/reject
243 // empty vectors and always return nullptr for this state. While this second
244 // alternative is faster, it makes client code harder to write, and it would
245 // break existing client code.
246 using android::hardware::hidl_vec;
247
248 hidl_vec<int32_t> empty;
249 EXPECT_EQ(nullptr, empty.releaseData());
250
251 empty.resize(0);
252 int32_t* data = empty.releaseData();
253 EXPECT_NE(nullptr, data);
254 delete data;
255 }
256
TEST_F(LibHidlTest,VecIterTest)257 TEST_F(LibHidlTest, VecIterTest) {
258 int32_t array[] = {5, 6, 7};
259 android::hardware::hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);
260
261 auto iter = hv1.begin(); // iterator begin()
262 EXPECT_EQ(*iter++, 5);
263 EXPECT_EQ(*iter, 6);
264 EXPECT_EQ(*++iter, 7);
265 EXPECT_EQ(*iter--, 7);
266 EXPECT_EQ(*iter, 6);
267 EXPECT_EQ(*--iter, 5);
268
269 iter += 2;
270 EXPECT_EQ(*iter, 7);
271 iter -= 2;
272 EXPECT_EQ(*iter, 5);
273
274 iter++;
275 EXPECT_EQ(*(iter + 1), 7);
276 EXPECT_EQ(*(1 + iter), 7);
277 EXPECT_EQ(*(iter - 1), 5);
278 EXPECT_EQ(*iter, 6);
279
280 auto five = iter - 1;
281 auto seven = iter + 1;
282 EXPECT_EQ(seven - five, 2);
283 EXPECT_EQ(five - seven, -2);
284
285 EXPECT_LT(five, seven);
286 EXPECT_LE(five, seven);
287 EXPECT_GT(seven, five);
288 EXPECT_GE(seven, five);
289
290 EXPECT_EQ(seven[0], 7);
291 EXPECT_EQ(five[1], 6);
292 }
293
TEST_F(LibHidlTest,VecIterForTest)294 TEST_F(LibHidlTest, VecIterForTest) {
295 using android::hardware::hidl_vec;
296 int32_t array[] = {5, 6, 7};
297 hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);
298
299 int32_t sum = 0; // range based for loop interoperability
300 for (auto &&i: hv1) {
301 sum += i;
302 }
303 EXPECT_EQ(sum, 5+6+7);
304
305 for (auto iter = hv1.begin(); iter < hv1.end(); ++iter) {
306 *iter += 10;
307 }
308 const hidl_vec<int32_t> &v4 = hv1;
309 sum = 0;
310 for (const auto &i : v4) {
311 sum += i;
312 }
313 EXPECT_EQ(sum, 15+16+17);
314 }
315
TEST_F(LibHidlTest,VecEqTest)316 TEST_F(LibHidlTest, VecEqTest) {
317 android::hardware::hidl_vec<int32_t> hv1{5, 6, 7};
318 android::hardware::hidl_vec<int32_t> hv2{5, 6, 7};
319 android::hardware::hidl_vec<int32_t> hv3{5, 6, 8};
320
321 // use the == and != operator intentionally here
322 EXPECT_TRUE(hv1 == hv2);
323 EXPECT_TRUE(hv1 != hv3);
324 }
325
TEST_F(LibHidlTest,VecEqInitializerTest)326 TEST_F(LibHidlTest, VecEqInitializerTest) {
327 std::vector<int32_t> reference{5, 6, 7};
328 android::hardware::hidl_vec<int32_t> hv1{1, 2, 3};
329 hv1 = {5, 6, 7};
330 android::hardware::hidl_vec<int32_t> hv2;
331 hv2 = {5, 6, 7};
332 android::hardware::hidl_vec<int32_t> hv3;
333 hv3 = {5, 6, 8};
334
335 // use the == and != operator intentionally here
336 EXPECT_TRUE(hv1 == hv2);
337 EXPECT_TRUE(hv1 == reference);
338 EXPECT_TRUE(hv1 != hv3);
339 }
340
TEST_F(LibHidlTest,VecRangeCtorTest)341 TEST_F(LibHidlTest, VecRangeCtorTest) {
342 struct ConvertibleType {
343 int val;
344
345 explicit ConvertibleType(int val) : val(val) {}
346 explicit operator int() const { return val; }
347 bool operator==(const int& other) const { return val == other; }
348 };
349
350 std::vector<ConvertibleType> input{
351 ConvertibleType(1), ConvertibleType(2), ConvertibleType(3),
352 };
353
354 android::hardware::hidl_vec<int> hv(input.begin(), input.end());
355
356 EXPECT_EQ(input.size(), hv.size());
357 int sum = 0;
358 for (unsigned i = 0; i < input.size(); i++) {
359 EXPECT_EQ(input[i], hv[i]);
360 sum += hv[i];
361 }
362 EXPECT_EQ(sum, 1 + 2 + 3);
363 }
364
365 struct FailsIfCopied {
FailsIfCopiedFailsIfCopied366 FailsIfCopied() {}
367
368 // add failure if copied since in general this can be expensive
FailsIfCopiedFailsIfCopied369 FailsIfCopied(const FailsIfCopied& o) { *this = o; }
operator =FailsIfCopied370 FailsIfCopied& operator=(const FailsIfCopied&) {
371 ADD_FAILURE() << "FailsIfCopied copied";
372 return *this;
373 }
374
375 // fine to move this type since in general this is cheaper
376 FailsIfCopied(FailsIfCopied&& o) = default;
377 FailsIfCopied& operator=(FailsIfCopied&&) = default;
378 };
379
TEST_F(LibHidlTest,VecResizeNoCopy)380 TEST_F(LibHidlTest, VecResizeNoCopy) {
381 using android::hardware::hidl_vec;
382
383 hidl_vec<FailsIfCopied> noCopies;
384 noCopies.resize(3); // instantiates three elements
385
386 FailsIfCopied* oldPointer = noCopies.data();
387
388 noCopies.resize(6); // should move three elements, not copy
389
390 // oldPointer should be invalidated at this point.
391 // hidl_vec doesn't currently try to realloc but if it ever switches
392 // to an implementation that does, this test wouldn't do anything.
393 EXPECT_NE(oldPointer, noCopies.data());
394 }
395
TEST_F(LibHidlTest,VecFindTest)396 TEST_F(LibHidlTest, VecFindTest) {
397 using android::hardware::hidl_vec;
398 hidl_vec<int32_t> hv1 = {10, 20, 30, 40};
399 const hidl_vec<int32_t> hv2 = {1, 2, 3, 4};
400
401 auto it = hv1.find(20);
402 EXPECT_EQ(20, *it);
403 *it = 21;
404 EXPECT_EQ(21, *it);
405 it = hv1.find(20);
406 EXPECT_EQ(hv1.end(), it);
407 it = hv1.find(21);
408 EXPECT_EQ(21, *it);
409
410 auto cit = hv2.find(4);
411 EXPECT_EQ(4, *cit);
412 }
413
TEST_F(LibHidlTest,VecContainsTest)414 TEST_F(LibHidlTest, VecContainsTest) {
415 using android::hardware::hidl_vec;
416 hidl_vec<int32_t> hv1 = {10, 20, 30, 40};
417 const hidl_vec<int32_t> hv2 = {0, 1, 2, 3, 4};
418
419 EXPECT_TRUE(hv1.contains(10));
420 EXPECT_TRUE(hv1.contains(40));
421 EXPECT_FALSE(hv1.contains(1));
422 EXPECT_FALSE(hv1.contains(0));
423 EXPECT_TRUE(hv2.contains(0));
424 EXPECT_FALSE(hv2.contains(10));
425
426 hv1[0] = 11;
427 EXPECT_FALSE(hv1.contains(10));
428 EXPECT_TRUE(hv1.contains(11));
429 }
430
TEST_F(LibHidlTest,ArrayTest)431 TEST_F(LibHidlTest, ArrayTest) {
432 using android::hardware::hidl_array;
433 int32_t array[] = {5, 6, 7};
434
435 hidl_array<int32_t, 3> ha(array);
436 EXPECT_ARRAYEQ(ha, array, 3);
437 }
438
TEST_F(LibHidlTest,TaskRunnerTest)439 TEST_F(LibHidlTest, TaskRunnerTest) {
440 using android::hardware::details::TaskRunner;
441 using namespace std::chrono_literals;
442
443 std::condition_variable cv;
444 std::mutex m;
445
446 TaskRunner tr;
447 tr.start(1 /* limit */);
448 bool flag = false;
449 tr.push([&] {
450 flag = true;
451 cv.notify_all();
452 });
453
454 std::unique_lock<std::mutex> lock(m);
455
456 // 1s so this doesn't deadlock. This isn't a performance test.
457 EXPECT_TRUE(cv.wait_for(lock, 1s, [&]{return flag;}));
458 EXPECT_TRUE(flag);
459 }
460
TEST_F(LibHidlTest,StringCmpTest)461 TEST_F(LibHidlTest, StringCmpTest) {
462 using android::hardware::hidl_string;
463 const char * s = "good";
464 hidl_string hs(s);
465 EXPECT_NE(hs.c_str(), s);
466
467 EXPECT_TRUE(hs == s); // operator ==
468 EXPECT_TRUE(s == hs);
469
470 EXPECT_FALSE(hs != s); // operator ==
471 EXPECT_FALSE(s != hs);
472 }
473
474 template <typename T>
great(android::hardware::hidl_vec<T>)475 void great(android::hardware::hidl_vec<T>) {}
476
TEST_F(LibHidlTest,VecCopyTest)477 TEST_F(LibHidlTest, VecCopyTest) {
478 android::hardware::hidl_vec<int32_t> v;
479 great(v);
480 }
481
TEST_F(LibHidlTest,StdArrayTest)482 TEST_F(LibHidlTest, StdArrayTest) {
483 using android::hardware::hidl_array;
484 hidl_array<int32_t, 5> array{(int32_t[5]){1, 2, 3, 4, 5}};
485 std::array<int32_t, 5> stdArray = array;
486 EXPECT_ARRAYEQ(array.data(), stdArray.data(), 5);
487 hidl_array<int32_t, 5> array2 = stdArray;
488 EXPECT_ARRAYEQ(array.data(), array2.data(), 5);
489 }
490
TEST_F(LibHidlTest,MultiDimStdArrayTest)491 TEST_F(LibHidlTest, MultiDimStdArrayTest) {
492 using android::hardware::hidl_array;
493 hidl_array<int32_t, 2, 3> array;
494 for (size_t i = 0; i < 2; i++) {
495 for (size_t j = 0; j < 3; j++) {
496 array[i][j] = i + j + i * j;
497 }
498 }
499 std::array<std::array<int32_t, 3>, 2> stdArray = array;
500 EXPECT_2DARRAYEQ(array, stdArray, 2, 3);
501 hidl_array<int32_t, 2, 3> array2 = stdArray;
502 EXPECT_2DARRAYEQ(array, array2, 2, 3);
503 }
504
TEST_F(LibHidlTest,HidlVersionTest)505 TEST_F(LibHidlTest, HidlVersionTest) {
506 using android::hardware::hidl_version;
507 hidl_version v1_0{1, 0};
508 EXPECT_EQ(1, v1_0.get_major());
509 EXPECT_EQ(0, v1_0.get_minor());
510 hidl_version v2_0{2, 0};
511 hidl_version v2_1{2, 1};
512 hidl_version v2_2{2, 2};
513 hidl_version v3_0{3, 0};
514 hidl_version v3_0b{3,0};
515
516 EXPECT_TRUE(v1_0 < v2_0);
517 EXPECT_TRUE(v1_0 != v2_0);
518 EXPECT_TRUE(v2_0 < v2_1);
519 EXPECT_TRUE(v2_1 < v3_0);
520 EXPECT_TRUE(v2_0 > v1_0);
521 EXPECT_TRUE(v2_0 != v1_0);
522 EXPECT_TRUE(v2_1 > v2_0);
523 EXPECT_TRUE(v3_0 > v2_1);
524 EXPECT_TRUE(v3_0 == v3_0b);
525 EXPECT_FALSE(v3_0 != v3_0b);
526 EXPECT_TRUE(v3_0 <= v3_0b);
527 EXPECT_TRUE(v2_2 <= v3_0);
528 EXPECT_TRUE(v3_0 >= v3_0b);
529 EXPECT_TRUE(v3_0 >= v2_2);
530 }
531
TEST_F(LibHidlTest,ReturnMoveTest)532 TEST_F(LibHidlTest, ReturnMoveTest) {
533 using namespace ::android;
534 using ::android::hardware::Return;
535 using ::android::hardware::Status;
536 Return<void> ret{Status::fromStatusT(DEAD_OBJECT)};
537 ret.isOk();
538 ret = {Status::fromStatusT(DEAD_OBJECT)};
539 ret.isOk();
540 }
541
TEST_F(LibHidlTest,ReturnTest)542 TEST_F(LibHidlTest, ReturnTest) {
543 using ::android::DEAD_OBJECT;
544 using ::android::hardware::Return;
545 using ::android::hardware::Status;
546 using ::android::hardware::hidl_string;
547
548 EXPECT_FALSE(Return<void>(Status::fromStatusT(DEAD_OBJECT)).isOk());
549 EXPECT_TRUE(Return<void>(Status::ok()).isOk());
550
551 hidl_string one = "1";
552 hidl_string two = "2";
553 Return<hidl_string> ret = Return<hidl_string>(Status::fromStatusT(DEAD_OBJECT));
554
555 EXPECT_EQ(one, Return<hidl_string>(one).withDefault(two));
556 EXPECT_EQ(two, ret.withDefault(two));
557
558 hidl_string&& moved = ret.withDefault(std::move(two));
559 EXPECT_EQ("2", moved);
560
561 const hidl_string three = "3";
562 EXPECT_EQ(three, ret.withDefault(three));
563 }
564
TEST_F(LibHidlTest,ReturnDies)565 TEST_F(LibHidlTest, ReturnDies) {
566 using ::android::hardware::Return;
567 using ::android::hardware::Status;
568
569 EXPECT_DEATH({ Return<void>(Status::fromStatusT(-EBUSY)); }, "");
570 EXPECT_DEATH({ Return<void>(Status::fromStatusT(-EBUSY)).isDeadObject(); }, "");
571 EXPECT_DEATH(
572 {
573 Return<int> ret = Return<int>(Status::fromStatusT(-EBUSY));
574 int foo = ret; // should crash here
575 (void)foo;
576 ret.isOk();
577 },
578 "");
579 }
580
TEST_F(LibHidlTest,DetectUncheckedReturn)581 TEST_F(LibHidlTest, DetectUncheckedReturn) {
582 using ::android::hardware::HidlReturnRestriction;
583 using ::android::hardware::Return;
584 using ::android::hardware::setProcessHidlReturnRestriction;
585 using ::android::hardware::Status;
586
587 setProcessHidlReturnRestriction(HidlReturnRestriction::FATAL_IF_UNCHECKED);
588
589 EXPECT_DEATH(
590 {
591 auto ret = Return<void>(Status::ok());
592 (void)ret;
593 },
594 "");
595 EXPECT_DEATH(
596 {
597 auto ret = Return<void>(Status::ok());
598 ret = Return<void>(Status::ok());
599 ret.isOk();
600 },
601 "");
602
603 auto ret = Return<void>(Status::ok());
604 (void)ret.isOk();
605 ret = Return<void>(Status::ok());
606 (void)ret.isOk();
607
608 setProcessHidlReturnRestriction(HidlReturnRestriction::NONE);
609 }
610
toString(const::android::hardware::Status & s)611 std::string toString(const ::android::hardware::Status &s) {
612 using ::android::hardware::operator<<;
613 std::ostringstream oss;
614 oss << s;
615 return oss.str();
616 }
617
TEST_F(LibHidlTest,StatusStringTest)618 TEST_F(LibHidlTest, StatusStringTest) {
619 using namespace ::android;
620 using ::android::hardware::Status;
621 using ::testing::HasSubstr;
622
623 EXPECT_EQ(toString(Status::ok()), "No error");
624
625 EXPECT_THAT(toString(Status::fromStatusT(DEAD_OBJECT)), HasSubstr("DEAD_OBJECT"));
626
627 EXPECT_THAT(toString(Status::fromStatusT(-EBUSY)), HasSubstr("busy"));
628
629 EXPECT_THAT(toString(Status::fromExceptionCode(Status::EX_NULL_POINTER)),
630 HasSubstr("EX_NULL_POINTER"));
631 }
632
TEST_F(LibHidlTest,PreloadTest)633 TEST_F(LibHidlTest, PreloadTest) {
634 // HIDL doesn't have support to load passthrough implementations on host, but we
635 // could do this by loading implementations from the output directory
636 if (!kAndroid) GTEST_SKIP();
637
638 using ::android::hardware::preloadPassthroughService;
639 using ::android::hidl::memory::V1_0::IMemory;
640
641 // installed on all devices by default in both bitnesses and not otherwise a dependency of this
642 // test.
643 static const std::string kLib = "android.hidl.memory@1.0-impl.so";
644
645 EXPECT_FALSE(isLibraryOpen(kLib));
646 preloadPassthroughService<IMemory>();
647 EXPECT_TRUE(isLibraryOpen(kLib));
648 }
649
650 template <typename T, size_t start, size_t end>
assertZeroInRange(const T * t)651 static void assertZeroInRange(const T* t) {
652 static_assert(start < sizeof(T));
653 static_assert(end <= sizeof(T));
654
655 const uint8_t* ptr = reinterpret_cast<const uint8_t*>(t);
656
657 for (size_t i = start; i < end; i++) {
658 EXPECT_EQ(0, ptr[i]);
659 }
660 }
661
662 template <typename T, size_t start, size_t end>
uninitTest()663 static void uninitTest() {
664 uint8_t buf[sizeof(T)];
665 memset(buf, 0xFF, sizeof(T));
666
667 T* type = new (buf) T;
668 assertZeroInRange<T, start, end>(type);
669 type->~T();
670 }
671
TEST_F(LibHidlTest,HidlVecUninit)672 TEST_F(LibHidlTest, HidlVecUninit) {
673 using ::android::hardware::hidl_vec;
674 struct SomeType {};
675 static_assert(sizeof(hidl_vec<SomeType>) == 16);
676
677 // padding after mOwnsBuffer
678 uninitTest<hidl_vec<SomeType>, 13, 16>();
679 }
TEST_F(LibHidlTest,HidlHandleUninit)680 TEST_F(LibHidlTest, HidlHandleUninit) {
681 using ::android::hardware::hidl_handle;
682 static_assert(sizeof(hidl_handle) == 16);
683
684 // padding after mOwnsHandle
685 uninitTest<hidl_handle, 9, 16>();
686 }
TEST_F(LibHidlTest,HidlStringUninit)687 TEST_F(LibHidlTest, HidlStringUninit) {
688 using ::android::hardware::hidl_string;
689 static_assert(sizeof(hidl_string) == 16);
690
691 // padding after mOwnsBuffer
692 uninitTest<hidl_string, 13, 16>();
693 }
694
main(int argc,char ** argv)695 int main(int argc, char **argv) {
696 ::testing::InitGoogleTest(&argc, argv);
697 return RUN_ALL_TESTS();
698 }
699