test_main.cpp - platform/system/libhidl - Gitiles

 /*
  * Copyright (C) 2016 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #define LOG_TAG "LibHidlTest"

 #include <android-base/logging.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 #include <hidl/HidlSupport.h>
 #include <hidl/Status.h>
 #include <hidl/TaskRunner.h>
 #include <vector>

 #define EXPECT_ARRAYEQ(__a1__, __a2__, __size__) EXPECT_TRUE(isArrayEqual(__a1__, __a2__, __size__))
 #define EXPECT_2DARRAYEQ(__a1__, __a2__, __size1__, __size2__) \
         EXPECT_TRUE(is2dArrayEqual(__a1__, __a2__, __size1__, __size2__))

 template<typename T, typename S>
 static inline bool isArrayEqual(const T arr1, const S arr2, size_t size) {
     for(size_t i = 0; i < size; i++)
         if(arr1[i] != arr2[i])
             return false;
     return true;
 }

 template<typename T, typename S>
 static inline bool is2dArrayEqual(const T arr1, const S arr2, size_t size1, size_t size2) {
     for(size_t i = 0; i < size1; i++)
         for (size_t j = 0; j < size2; j++)
             if(arr1[i][j] != arr2[i][j])
                 return false;
     return true;
 }

 class LibHidlTest : public ::testing::Test {
 public:
     virtual void SetUp() override {
     }
     virtual void TearDown() override {
     }
 };

 TEST_F(LibHidlTest, StringTest) {
     using android::hardware::hidl_string;
     hidl_string s; // empty constructor
     EXPECT_STREQ(s.c_str(), "");
     hidl_string s1 = "s1"; // copy = from cstr
     EXPECT_STREQ(s1.c_str(), "s1");
     hidl_string s2("s2"); // copy constructor from cstr
     EXPECT_STREQ(s2.c_str(), "s2");
     hidl_string s2a(nullptr); // copy constructor from null cstr
     EXPECT_STREQ("", s2a.c_str());
     s2a = nullptr; // = from nullptr cstr
     EXPECT_STREQ(s2a.c_str(), "");
     hidl_string s3 = hidl_string("s3"); // move =
     EXPECT_STREQ(s3.c_str(), "s3");
     hidl_string s4 = hidl_string("12345", 3); // copy constructor from cstr w/ length
     EXPECT_STREQ(s4.c_str(), "123");
     hidl_string s5(hidl_string(hidl_string("s5"))); // move constructor
     EXPECT_STREQ(s5.c_str(), "s5");
     hidl_string s6(std::string("s6")); // copy constructor from std::string
     EXPECT_STREQ(s6.c_str(), "s6");
     hidl_string s7 = std::string("s7"); // copy = from std::string
     EXPECT_STREQ(s7.c_str(), "s7");
     hidl_string s8(s7); // copy constructor
     EXPECT_STREQ(s8.c_str(), "s7");
     hidl_string s9 = s8; // copy =
     EXPECT_STREQ(s9.c_str(), "s7");
     char myCString[20] = "myCString";
     s.setToExternal(&myCString[0], strlen(myCString));
     EXPECT_STREQ(s.c_str(), "myCString");
     myCString[2] = 'D';
     EXPECT_STREQ(s.c_str(), "myDString");
     s.clear(); // should not affect myCString
     EXPECT_STREQ(myCString, "myDString");

     // casts
     s = "great";
     std::string myString = s;
     const char *anotherCString = s.c_str();
     EXPECT_EQ(myString, "great");
     EXPECT_STREQ(anotherCString, "great");

     const hidl_string t = "not so great";
     std::string myTString = t;
     const char * anotherTCString = t.c_str();
     EXPECT_EQ(myTString, "not so great");
     EXPECT_STREQ(anotherTCString, "not so great");

     // Assignment from hidl_string to std::string
     std::string tgt;
     hidl_string src("some stuff");
     tgt = src;
     EXPECT_STREQ(tgt.c_str(), "some stuff");

     // Stream output operator
     hidl_string msg("hidl_string works with operator<<");
     std::cout << msg;

     // Comparisons
     const char * cstr1 = "abc";
     std::string string1(cstr1);
     hidl_string hs1(cstr1);
     const char * cstrE = "abc";
     std::string stringE(cstrE);
     hidl_string hsE(cstrE);
     const char * cstrNE = "ABC";
     std::string stringNE(cstrNE);
     hidl_string hsNE(cstrNE);
     const char * cstr2 = "def";
     std::string string2(cstr2);
     hidl_string hs2(cstr2);

     EXPECT_TRUE(hs1  == hsE);
     EXPECT_FALSE(hs1 == hsNE);
     EXPECT_TRUE(hs1  == cstrE);
     EXPECT_FALSE(hs1 == cstrNE);
     EXPECT_TRUE(hs1  == stringE);
     EXPECT_FALSE(hs1 == stringNE);
     EXPECT_FALSE(hs1 != hsE);
     EXPECT_TRUE(hs1  != hsNE);
     EXPECT_FALSE(hs1 != cstrE);
     EXPECT_TRUE(hs1  != cstrNE);
     EXPECT_FALSE(hs1 != stringE);
     EXPECT_TRUE(hs1  != stringNE);

     EXPECT_TRUE(hs1 < hs2);
     EXPECT_FALSE(hs2 < hs1);
     EXPECT_TRUE(hs2 > hs1);
     EXPECT_FALSE(hs1 > hs2);
     EXPECT_TRUE(hs1 <= hs1);
     EXPECT_TRUE(hs1 <= hs2);
     EXPECT_FALSE(hs2 <= hs1);
     EXPECT_TRUE(hs1 >= hs1);
     EXPECT_TRUE(hs2 >= hs1);
     EXPECT_FALSE(hs2 <= hs1);
 }

 TEST_F(LibHidlTest, MemoryTest) {
     using android::hardware::hidl_memory;

     hidl_memory mem1 = hidl_memory(); // default constructor
     hidl_memory mem2 = mem1; // copy constructor (nullptr)

     EXPECT_EQ(nullptr, mem2.handle());

     native_handle_t* testHandle = native_handle_create(0 /* numInts */, 0 /* numFds */);

     hidl_memory mem3 = hidl_memory("foo", testHandle, 42 /* size */); // owns testHandle
     hidl_memory mem4 = mem3; // copy constructor (regular handle)

     EXPECT_EQ(mem3.name(), mem4.name());
     EXPECT_EQ(mem3.size(), mem4.size());
     EXPECT_NE(nullptr, mem4.handle());
     EXPECT_NE(mem3.handle(), mem4.handle()); // check handle cloned

     hidl_memory mem5 = hidl_memory("foo", nullptr, 0); // hidl memory works with nullptr handle
     hidl_memory mem6 = mem5;
     EXPECT_EQ(nullptr, mem5.handle());
     EXPECT_EQ(nullptr, mem6.handle());
 }

 TEST_F(LibHidlTest, VecInitTest) {
     using android::hardware::hidl_vec;
     using std::vector;
     int32_t array[] = {5, 6, 7};
     vector<int32_t> v(array, array + 3);

     hidl_vec<int32_t> hv1 = v; // copy =
     EXPECT_ARRAYEQ(hv1, array, 3);
     EXPECT_ARRAYEQ(hv1, v, 3);
     hidl_vec<int32_t> hv2(v); // copy constructor
     EXPECT_ARRAYEQ(hv2, v, 3);

     vector<int32_t> v2 = hv1; // cast
     EXPECT_ARRAYEQ(v2, v, 3);

     hidl_vec<int32_t> v3 = {5, 6, 7}; // initializer_list
     EXPECT_EQ(v3.size(), 3ul);
     EXPECT_ARRAYEQ(v3, array, v3.size());
 }

 TEST_F(LibHidlTest, VecIterTest) {
     int32_t array[] = {5, 6, 7};
     android::hardware::hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);

     auto iter = hv1.begin();    // iterator begin()
     EXPECT_EQ(*iter++, 5);
     EXPECT_EQ(*iter, 6);
     EXPECT_EQ(*++iter, 7);
     EXPECT_EQ(*iter--, 7);
     EXPECT_EQ(*iter, 6);
     EXPECT_EQ(*--iter, 5);

     iter += 2;
     EXPECT_EQ(*iter, 7);
     iter -= 2;
     EXPECT_EQ(*iter, 5);

     iter++;
     EXPECT_EQ(*(iter + 1), 7);
     EXPECT_EQ(*(1 + iter), 7);
     EXPECT_EQ(*(iter - 1), 5);
     EXPECT_EQ(*iter, 6);

     auto five = iter - 1;
     auto seven = iter + 1;
     EXPECT_EQ(seven - five, 2);
     EXPECT_EQ(five - seven, -2);

     EXPECT_LT(five, seven);
     EXPECT_LE(five, seven);
     EXPECT_GT(seven, five);
     EXPECT_GE(seven, five);

     EXPECT_EQ(seven[0], 7);
     EXPECT_EQ(five[1], 6);
 }

 TEST_F(LibHidlTest, VecIterForTest) {
     using android::hardware::hidl_vec;
     int32_t array[] = {5, 6, 7};
     hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);

     int32_t sum = 0;            // range based for loop interoperability
     for (auto &&i: hv1) {
         sum += i;
     }
     EXPECT_EQ(sum, 5+6+7);

     for (auto iter = hv1.begin(); iter < hv1.end(); ++iter) {
         *iter += 10;
     }
     const hidl_vec<int32_t> &v4 = hv1;
     sum = 0;
     for (const auto &i : v4) {
         sum += i;
     }
     EXPECT_EQ(sum, 15+16+17);
 }

 TEST_F(LibHidlTest, VecEqTest) {
     android::hardware::hidl_vec<int32_t> hv1{5, 6, 7};
     android::hardware::hidl_vec<int32_t> hv2{5, 6, 7};
     android::hardware::hidl_vec<int32_t> hv3{5, 6, 8};

     // use the == and != operator intentionally here
     EXPECT_TRUE(hv1 == hv2);
     EXPECT_TRUE(hv1 != hv3);
 }

 TEST_F(LibHidlTest, ArrayTest) {
     using android::hardware::hidl_array;
     int32_t array[] = {5, 6, 7};

     hidl_array<int32_t, 3> ha(array);
     EXPECT_ARRAYEQ(ha, array, 3);
 }

 TEST_F(LibHidlTest, TaskRunnerTest) {
     using android::hardware::details::TaskRunner;
     TaskRunner tr;
     tr.start(1 /* limit */);
     bool flag = false;
     tr.push([&] {
         usleep(1000);
         flag = true;
     });
     usleep(500);
     EXPECT_FALSE(flag);
     usleep(1000);
     EXPECT_TRUE(flag);
 }

 TEST_F(LibHidlTest, StringCmpTest) {
     using android::hardware::hidl_string;
     const char * s = "good";
     hidl_string hs(s);
     EXPECT_NE(hs.c_str(), s);

     EXPECT_TRUE(hs == s); // operator ==
     EXPECT_TRUE(s == hs);

     EXPECT_FALSE(hs != s); // operator ==
     EXPECT_FALSE(s != hs);
 }

 template <typename T>
 void great(android::hardware::hidl_vec<T>) {}

 TEST_F(LibHidlTest, VecCopyTest) {
     android::hardware::hidl_vec<int32_t> v;
     great(v);
 }

 TEST_F(LibHidlTest, StdArrayTest) {
     using android::hardware::hidl_array;
     hidl_array<int32_t, 5> array{(int32_t[5]){1, 2, 3, 4, 5}};
     std::array<int32_t, 5> stdArray = array;
     EXPECT_ARRAYEQ(array.data(), stdArray.data(), 5);
     hidl_array<int32_t, 5> array2 = stdArray;
     EXPECT_ARRAYEQ(array.data(), array2.data(), 5);
 }

 TEST_F(LibHidlTest, MultiDimStdArrayTest) {
     using android::hardware::hidl_array;
     hidl_array<int32_t, 2, 3> array;
     for (size_t i = 0; i < 2; i++) {
         for (size_t j = 0; j < 3; j++) {
             array[i][j] = i + j + i * j;
         }
     }
     std::array<std::array<int32_t, 3>, 2> stdArray = array;
     EXPECT_2DARRAYEQ(array, stdArray, 2, 3);
     hidl_array<int32_t, 2, 3> array2 = stdArray;
     EXPECT_2DARRAYEQ(array, array2, 2, 3);
 }

 TEST_F(LibHidlTest, HidlVersionTest) {
     using android::hardware::hidl_version;
     hidl_version v1_0{1, 0};
     EXPECT_EQ(1, v1_0.get_major());
     EXPECT_EQ(0, v1_0.get_minor());
     hidl_version v2_0{2, 0};
     hidl_version v2_1{2, 1};
     hidl_version v2_2{2, 2};
     hidl_version v3_0{3, 0};
     hidl_version v3_0b{3,0};

     EXPECT_TRUE(v1_0 < v2_0);
     EXPECT_TRUE(v2_0 < v2_1);
     EXPECT_TRUE(v2_1 < v3_0);
     EXPECT_TRUE(v2_0 > v1_0);
     EXPECT_TRUE(v2_1 > v2_0);
     EXPECT_TRUE(v3_0 > v2_1);
     EXPECT_TRUE(v3_0 == v3_0b);
     EXPECT_TRUE(v3_0 <= v3_0b);
     EXPECT_TRUE(v2_2 <= v3_0);
     EXPECT_TRUE(v3_0 >= v3_0b);
     EXPECT_TRUE(v3_0 >= v2_2);
 }

 TEST_F(LibHidlTest, ReturnMoveTest) {
     using namespace ::android;
     using ::android::hardware::Return;
     using ::android::hardware::Status;
     Return<void> ret{Status::fromStatusT(DEAD_OBJECT)};
     ret.isOk();
     ret = {Status::fromStatusT(DEAD_OBJECT)};
     ret.isOk();
 }

 TEST_F(LibHidlTest, ReturnTest) {
     using ::android::DEAD_OBJECT;
     using ::android::hardware::Return;
     using ::android::hardware::Status;
     using ::android::hardware::hidl_string;

     EXPECT_FALSE(Return<void>(Status::fromStatusT(DEAD_OBJECT)).isOk());
     EXPECT_TRUE(Return<void>(Status::ok()).isOk());

     hidl_string one = "1";
     hidl_string two = "2";
     Return<hidl_string> ret = Return<hidl_string>(Status::fromStatusT(DEAD_OBJECT));

     EXPECT_EQ(one, Return<hidl_string>(one).withDefault(two));
     EXPECT_EQ(two, ret.withDefault(two));

     hidl_string&& moved = ret.withDefault(std::move(two));
     EXPECT_EQ("2", moved);

     const hidl_string three = "3";
     EXPECT_EQ(three, ret.withDefault(three));
 }

 std::string toString(const ::android::hardware::Status &s) {
     using ::android::hardware::operator<<;
     std::ostringstream oss;
     oss << s;
     return oss.str();
 }

 TEST_F(LibHidlTest, StatusStringTest) {
     using namespace ::android;
     using ::android::hardware::Status;
     using ::testing::HasSubstr;

     EXPECT_EQ(toString(Status::ok()), "No error");

     EXPECT_THAT(toString(Status::fromStatusT(DEAD_OBJECT)), HasSubstr("DEAD_OBJECT"));

     EXPECT_THAT(toString(Status::fromStatusT(-EBUSY)), HasSubstr("busy"));

     EXPECT_THAT(toString(Status::fromExceptionCode(Status::EX_NULL_POINTER)),
             HasSubstr("EX_NULL_POINTER"));

 }

 int main(int argc, char **argv) {
     ::testing::InitGoogleTest(&argc, argv);
     return RUN_ALL_TESTS();
 }
	/*
	* Copyright (C) 2016 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#define LOG_TAG "LibHidlTest"

	#include <android-base/logging.h>
	#include <gmock/gmock.h>
	#include <gtest/gtest.h>
	#include <hidl/HidlSupport.h>
	#include <hidl/Status.h>
	#include <hidl/TaskRunner.h>
	#include <vector>

	#define EXPECT_ARRAYEQ(__a1__, __a2__, __size__) EXPECT_TRUE(isArrayEqual(__a1__, __a2__, __size__))
	#define EXPECT_2DARRAYEQ(__a1__, __a2__, __size1__, __size2__) \
	EXPECT_TRUE(is2dArrayEqual(__a1__, __a2__, __size1__, __size2__))

	template<typename T, typename S>
	static inline bool isArrayEqual(const T arr1, const S arr2, size_t size) {
	for(size_t i = 0; i < size; i++)
	if(arr1[i] != arr2[i])
	return false;
	return true;
	}

	template<typename T, typename S>
	static inline bool is2dArrayEqual(const T arr1, const S arr2, size_t size1, size_t size2) {
	for(size_t i = 0; i < size1; i++)
	for (size_t j = 0; j < size2; j++)
	if(arr1[i][j] != arr2[i][j])
	return false;
	return true;
	}

	class LibHidlTest : public ::testing::Test {
	public:
	virtual void SetUp() override {
	}
	virtual void TearDown() override {
	}
	};

	TEST_F(LibHidlTest, StringTest) {
	using android::hardware::hidl_string;
	hidl_string s; // empty constructor
	EXPECT_STREQ(s.c_str(), "");
	hidl_string s1 = "s1"; // copy = from cstr
	EXPECT_STREQ(s1.c_str(), "s1");
	hidl_string s2("s2"); // copy constructor from cstr
	EXPECT_STREQ(s2.c_str(), "s2");
	hidl_string s2a(nullptr); // copy constructor from null cstr
	EXPECT_STREQ("", s2a.c_str());
	s2a = nullptr; // = from nullptr cstr
	EXPECT_STREQ(s2a.c_str(), "");
	hidl_string s3 = hidl_string("s3"); // move =
	EXPECT_STREQ(s3.c_str(), "s3");
	hidl_string s4 = hidl_string("12345", 3); // copy constructor from cstr w/ length
	EXPECT_STREQ(s4.c_str(), "123");
	hidl_string s5(hidl_string(hidl_string("s5"))); // move constructor
	EXPECT_STREQ(s5.c_str(), "s5");
	hidl_string s6(std::string("s6")); // copy constructor from std::string
	EXPECT_STREQ(s6.c_str(), "s6");
	hidl_string s7 = std::string("s7"); // copy = from std::string
	EXPECT_STREQ(s7.c_str(), "s7");
	hidl_string s8(s7); // copy constructor
	EXPECT_STREQ(s8.c_str(), "s7");
	hidl_string s9 = s8; // copy =
	EXPECT_STREQ(s9.c_str(), "s7");
	char myCString[20] = "myCString";
	s.setToExternal(&myCString[0], strlen(myCString));
	EXPECT_STREQ(s.c_str(), "myCString");
	myCString[2] = 'D';
	EXPECT_STREQ(s.c_str(), "myDString");
	s.clear(); // should not affect myCString
	EXPECT_STREQ(myCString, "myDString");

	// casts
	s = "great";
	std::string myString = s;
	const char *anotherCString = s.c_str();
	EXPECT_EQ(myString, "great");
	EXPECT_STREQ(anotherCString, "great");

	const hidl_string t = "not so great";
	std::string myTString = t;
	const char * anotherTCString = t.c_str();
	EXPECT_EQ(myTString, "not so great");
	EXPECT_STREQ(anotherTCString, "not so great");

	// Assignment from hidl_string to std::string
	std::string tgt;
	hidl_string src("some stuff");
	tgt = src;
	EXPECT_STREQ(tgt.c_str(), "some stuff");

	// Stream output operator
	hidl_string msg("hidl_string works with operator<<");
	std::cout << msg;

	// Comparisons
	const char * cstr1 = "abc";
	std::string string1(cstr1);
	hidl_string hs1(cstr1);
	const char * cstrE = "abc";
	std::string stringE(cstrE);
	hidl_string hsE(cstrE);
	const char * cstrNE = "ABC";
	std::string stringNE(cstrNE);
	hidl_string hsNE(cstrNE);
	const char * cstr2 = "def";
	std::string string2(cstr2);
	hidl_string hs2(cstr2);

	EXPECT_TRUE(hs1 == hsE);
	EXPECT_FALSE(hs1 == hsNE);
	EXPECT_TRUE(hs1 == cstrE);
	EXPECT_FALSE(hs1 == cstrNE);
	EXPECT_TRUE(hs1 == stringE);
	EXPECT_FALSE(hs1 == stringNE);
	EXPECT_FALSE(hs1 != hsE);
	EXPECT_TRUE(hs1 != hsNE);
	EXPECT_FALSE(hs1 != cstrE);
	EXPECT_TRUE(hs1 != cstrNE);
	EXPECT_FALSE(hs1 != stringE);
	EXPECT_TRUE(hs1 != stringNE);

	EXPECT_TRUE(hs1 < hs2);
	EXPECT_FALSE(hs2 < hs1);
	EXPECT_TRUE(hs2 > hs1);
	EXPECT_FALSE(hs1 > hs2);
	EXPECT_TRUE(hs1 <= hs1);
	EXPECT_TRUE(hs1 <= hs2);
	EXPECT_FALSE(hs2 <= hs1);
	EXPECT_TRUE(hs1 >= hs1);
	EXPECT_TRUE(hs2 >= hs1);
	EXPECT_FALSE(hs2 <= hs1);
	}

	TEST_F(LibHidlTest, MemoryTest) {
	using android::hardware::hidl_memory;

	hidl_memory mem1 = hidl_memory(); // default constructor
	hidl_memory mem2 = mem1; // copy constructor (nullptr)

	EXPECT_EQ(nullptr, mem2.handle());

	native_handle_t* testHandle = native_handle_create(0 /* numInts /, 0 / numFds */);

	hidl_memory mem3 = hidl_memory("foo", testHandle, 42 /* size */); // owns testHandle
	hidl_memory mem4 = mem3; // copy constructor (regular handle)

	EXPECT_EQ(mem3.name(), mem4.name());
	EXPECT_EQ(mem3.size(), mem4.size());
	EXPECT_NE(nullptr, mem4.handle());
	EXPECT_NE(mem3.handle(), mem4.handle()); // check handle cloned

	hidl_memory mem5 = hidl_memory("foo", nullptr, 0); // hidl memory works with nullptr handle
	hidl_memory mem6 = mem5;
	EXPECT_EQ(nullptr, mem5.handle());
	EXPECT_EQ(nullptr, mem6.handle());
	}

	TEST_F(LibHidlTest, VecInitTest) {
	using android::hardware::hidl_vec;
	using std::vector;
	int32_t array[] = {5, 6, 7};
	vector<int32_t> v(array, array + 3);

	hidl_vec<int32_t> hv1 = v; // copy =
	EXPECT_ARRAYEQ(hv1, array, 3);
	EXPECT_ARRAYEQ(hv1, v, 3);
	hidl_vec<int32_t> hv2(v); // copy constructor
	EXPECT_ARRAYEQ(hv2, v, 3);

	vector<int32_t> v2 = hv1; // cast
	EXPECT_ARRAYEQ(v2, v, 3);

	hidl_vec<int32_t> v3 = {5, 6, 7}; // initializer_list
	EXPECT_EQ(v3.size(), 3ul);
	EXPECT_ARRAYEQ(v3, array, v3.size());
	}

	TEST_F(LibHidlTest, VecIterTest) {
	int32_t array[] = {5, 6, 7};
	android::hardware::hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);

	auto iter = hv1.begin(); // iterator begin()
	EXPECT_EQ(*iter++, 5);
	EXPECT_EQ(*iter, 6);
	EXPECT_EQ(*++iter, 7);
	EXPECT_EQ(*iter--, 7);
	EXPECT_EQ(*iter, 6);
	EXPECT_EQ(*--iter, 5);

	iter += 2;
	EXPECT_EQ(*iter, 7);
	iter -= 2;
	EXPECT_EQ(*iter, 5);

	iter++;
	EXPECT_EQ(*(iter + 1), 7);
	EXPECT_EQ(*(1 + iter), 7);
	EXPECT_EQ(*(iter - 1), 5);
	EXPECT_EQ(*iter, 6);

	auto five = iter - 1;
	auto seven = iter + 1;
	EXPECT_EQ(seven - five, 2);
	EXPECT_EQ(five - seven, -2);

	EXPECT_LT(five, seven);
	EXPECT_LE(five, seven);
	EXPECT_GT(seven, five);
	EXPECT_GE(seven, five);

	EXPECT_EQ(seven[0], 7);
	EXPECT_EQ(five[1], 6);
	}

	TEST_F(LibHidlTest, VecIterForTest) {
	using android::hardware::hidl_vec;
	int32_t array[] = {5, 6, 7};
	hidl_vec<int32_t> hv1 = std::vector<int32_t>(array, array + 3);

	int32_t sum = 0; // range based for loop interoperability
	for (auto &&i: hv1) {
	sum += i;
	}
	EXPECT_EQ(sum, 5+6+7);

	for (auto iter = hv1.begin(); iter < hv1.end(); ++iter) {
	*iter += 10;
	}
	const hidl_vec<int32_t> &v4 = hv1;
	sum = 0;
	for (const auto &i : v4) {
	sum += i;
	}
	EXPECT_EQ(sum, 15+16+17);
	}

	TEST_F(LibHidlTest, VecEqTest) {
	android::hardware::hidl_vec<int32_t> hv1{5, 6, 7};
	android::hardware::hidl_vec<int32_t> hv2{5, 6, 7};
	android::hardware::hidl_vec<int32_t> hv3{5, 6, 8};

	// use the == and != operator intentionally here
	EXPECT_TRUE(hv1 == hv2);
	EXPECT_TRUE(hv1 != hv3);
	}

	TEST_F(LibHidlTest, ArrayTest) {
	using android::hardware::hidl_array;
	int32_t array[] = {5, 6, 7};

	hidl_array<int32_t, 3> ha(array);
	EXPECT_ARRAYEQ(ha, array, 3);
	}

	TEST_F(LibHidlTest, TaskRunnerTest) {
	using android::hardware::details::TaskRunner;
	TaskRunner tr;
	tr.start(1 /* limit */);
	bool flag = false;
	tr.push([&] {
	usleep(1000);
	flag = true;
	});
	usleep(500);
	EXPECT_FALSE(flag);
	usleep(1000);
	EXPECT_TRUE(flag);
	}

	TEST_F(LibHidlTest, StringCmpTest) {
	using android::hardware::hidl_string;
	const char * s = "good";
	hidl_string hs(s);
	EXPECT_NE(hs.c_str(), s);

	EXPECT_TRUE(hs == s); // operator ==
	EXPECT_TRUE(s == hs);

	EXPECT_FALSE(hs != s); // operator ==
	EXPECT_FALSE(s != hs);
	}

	template <typename T>
	void great(android::hardware::hidl_vec<T>) {}

	TEST_F(LibHidlTest, VecCopyTest) {
	android::hardware::hidl_vec<int32_t> v;
	great(v);
	}

	TEST_F(LibHidlTest, StdArrayTest) {
	using android::hardware::hidl_array;
	hidl_array<int32_t, 5> array{(int32_t[5]){1, 2, 3, 4, 5}};
	std::array<int32_t, 5> stdArray = array;
	EXPECT_ARRAYEQ(array.data(), stdArray.data(), 5);
	hidl_array<int32_t, 5> array2 = stdArray;
	EXPECT_ARRAYEQ(array.data(), array2.data(), 5);
	}

	TEST_F(LibHidlTest, MultiDimStdArrayTest) {
	using android::hardware::hidl_array;
	hidl_array<int32_t, 2, 3> array;
	for (size_t i = 0; i < 2; i++) {
	for (size_t j = 0; j < 3; j++) {
	array[i][j] = i + j + i * j;
	}
	}
	std::array<std::array<int32_t, 3>, 2> stdArray = array;
	EXPECT_2DARRAYEQ(array, stdArray, 2, 3);
	hidl_array<int32_t, 2, 3> array2 = stdArray;
	EXPECT_2DARRAYEQ(array, array2, 2, 3);
	}

	TEST_F(LibHidlTest, HidlVersionTest) {
	using android::hardware::hidl_version;
	hidl_version v1_0{1, 0};
	EXPECT_EQ(1, v1_0.get_major());
	EXPECT_EQ(0, v1_0.get_minor());
	hidl_version v2_0{2, 0};
	hidl_version v2_1{2, 1};
	hidl_version v2_2{2, 2};
	hidl_version v3_0{3, 0};
	hidl_version v3_0b{3,0};

	EXPECT_TRUE(v1_0 < v2_0);
	EXPECT_TRUE(v2_0 < v2_1);
	EXPECT_TRUE(v2_1 < v3_0);
	EXPECT_TRUE(v2_0 > v1_0);
	EXPECT_TRUE(v2_1 > v2_0);
	EXPECT_TRUE(v3_0 > v2_1);
	EXPECT_TRUE(v3_0 == v3_0b);
	EXPECT_TRUE(v3_0 <= v3_0b);
	EXPECT_TRUE(v2_2 <= v3_0);
	EXPECT_TRUE(v3_0 >= v3_0b);
	EXPECT_TRUE(v3_0 >= v2_2);
	}

	TEST_F(LibHidlTest, ReturnMoveTest) {
	using namespace ::android;
	using ::android::hardware::Return;
	using ::android::hardware::Status;
	Return<void> ret{Status::fromStatusT(DEAD_OBJECT)};
	ret.isOk();
	ret = {Status::fromStatusT(DEAD_OBJECT)};
	ret.isOk();
	}

	TEST_F(LibHidlTest, ReturnTest) {
	using ::android::DEAD_OBJECT;
	using ::android::hardware::Return;
	using ::android::hardware::Status;
	using ::android::hardware::hidl_string;

	EXPECT_FALSE(Return<void>(Status::fromStatusT(DEAD_OBJECT)).isOk());
	EXPECT_TRUE(Return<void>(Status::ok()).isOk());

	hidl_string one = "1";
	hidl_string two = "2";
	Return<hidl_string> ret = Return<hidl_string>(Status::fromStatusT(DEAD_OBJECT));

	EXPECT_EQ(one, Return<hidl_string>(one).withDefault(two));
	EXPECT_EQ(two, ret.withDefault(two));

	hidl_string&& moved = ret.withDefault(std::move(two));
	EXPECT_EQ("2", moved);

	const hidl_string three = "3";
	EXPECT_EQ(three, ret.withDefault(three));
	}

	std::string toString(const ::android::hardware::Status &s) {
	using ::android::hardware::operator<<;
	std::ostringstream oss;
	oss << s;
	return oss.str();
	}

	TEST_F(LibHidlTest, StatusStringTest) {
	using namespace ::android;
	using ::android::hardware::Status;
	using ::testing::HasSubstr;

	EXPECT_EQ(toString(Status::ok()), "No error");

	EXPECT_THAT(toString(Status::fromStatusT(DEAD_OBJECT)), HasSubstr("DEAD_OBJECT"));

	EXPECT_THAT(toString(Status::fromStatusT(-EBUSY)), HasSubstr("busy"));

	EXPECT_THAT(toString(Status::fromExceptionCode(Status::EX_NULL_POINTER)),
	HasSubstr("EX_NULL_POINTER"));

	}

	int main(int argc, char **argv) {
	::testing::InitGoogleTest(&argc, argv);
	return RUN_ALL_TESTS();
	}