| // |
| // |
| // Copyright 2015 gRPC authors. |
| // |
| // 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. |
| // |
| // |
| |
| #include <grpc/support/port_platform.h> |
| |
| #include "src/core/lib/slice/slice.h" |
| |
| #include <inttypes.h> |
| #include <string.h> |
| |
| #include <algorithm> |
| #include <functional> |
| #include <memory> |
| #include <random> |
| #include <string> |
| #include <vector> |
| |
| #include "absl/strings/string_view.h" |
| #include "gtest/gtest.h" |
| |
| #include <grpc/slice.h> |
| #include <grpc/support/log.h> |
| |
| #include "src/core/lib/gprpp/memory.h" |
| #include "src/core/lib/gprpp/no_destruct.h" |
| #include "src/core/lib/slice/slice_internal.h" |
| #include "src/core/lib/slice/slice_refcount.h" |
| #include "test/core/util/build.h" |
| |
| TEST(GrpcSliceTest, MallocReturnsSomethingSensible) { |
| // Calls grpc_slice_create for various lengths and verifies the internals for |
| // consistency. |
| size_t length; |
| size_t i; |
| grpc_slice slice; |
| |
| for (length = 0; length <= 1024; length++) { |
| slice = grpc_slice_malloc(length); |
| // If there is a length, slice.data must be non-NULL. If length is zero |
| // we don't care. |
| if (length > GRPC_SLICE_INLINED_SIZE) { |
| EXPECT_NE(slice.data.refcounted.bytes, nullptr); |
| } |
| // Returned slice length must be what was requested. |
| EXPECT_EQ(GRPC_SLICE_LENGTH(slice), length); |
| // We must be able to write to every byte of the data |
| for (i = 0; i < length; i++) { |
| GRPC_SLICE_START_PTR(slice)[i] = static_cast<uint8_t>(i); |
| } |
| // And finally we must succeed in destroying the slice |
| grpc_slice_unref(slice); |
| } |
| } |
| |
| static void do_nothing(void* /*ignored*/) {} |
| |
| TEST(GrpcSliceTest, SliceNewReturnsSomethingSensible) { |
| uint8_t x; |
| |
| grpc_slice slice = grpc_slice_new(&x, 1, do_nothing); |
| EXPECT_NE(slice.refcount, nullptr); |
| EXPECT_EQ(slice.data.refcounted.bytes, &x); |
| EXPECT_EQ(slice.data.refcounted.length, 1); |
| grpc_slice_unref(slice); |
| } |
| |
| // destroy function that sets a mark to indicate it was called. |
| static void set_mark(void* p) { *(static_cast<int*>(p)) = 1; } |
| |
| TEST(GrpcSliceTest, SliceNewWithUserData) { |
| int marker = 0; |
| uint8_t buf[2]; |
| grpc_slice slice; |
| |
| buf[0] = 0; |
| buf[1] = 1; |
| slice = grpc_slice_new_with_user_data(buf, 2, set_mark, &marker); |
| EXPECT_EQ(marker, 0); |
| EXPECT_EQ(GRPC_SLICE_LENGTH(slice), 2); |
| EXPECT_EQ(GRPC_SLICE_START_PTR(slice)[0], 0); |
| EXPECT_EQ(GRPC_SLICE_START_PTR(slice)[1], 1); |
| |
| // unref should cause destroy function to run. |
| grpc_slice_unref(slice); |
| EXPECT_EQ(marker, 1); |
| } |
| |
| static int do_nothing_with_len_1_calls = 0; |
| |
| static void do_nothing_with_len_1(void* /*ignored*/, size_t len) { |
| EXPECT_EQ(len, 1); |
| do_nothing_with_len_1_calls++; |
| } |
| |
| TEST(GrpcSliceTest, SliceNewWithLenReturnsSomethingSensible) { |
| uint8_t x; |
| int num_refs = 5; // To test adding/removing an arbitrary number of refs |
| int i; |
| |
| grpc_slice slice = grpc_slice_new_with_len(&x, 1, do_nothing_with_len_1); |
| EXPECT_NE(slice.refcount, |
| nullptr); // ref count is initialized to 1 at this point |
| EXPECT_EQ(slice.data.refcounted.bytes, &x); |
| EXPECT_EQ(slice.data.refcounted.length, 1); |
| EXPECT_EQ(do_nothing_with_len_1_calls, 0); |
| |
| // Add an arbitrary number of refs to the slice and remoe the refs. This is to |
| // make sure that that the destroy callback (i.e do_nothing_with_len_1()) is |
| // not called until the last unref operation |
| for (i = 0; i < num_refs; i++) { |
| grpc_slice_ref(slice); |
| } |
| for (i = 0; i < num_refs; i++) { |
| grpc_slice_unref(slice); |
| } |
| EXPECT_EQ(do_nothing_with_len_1_calls, 0); // Shouldn't be called yet |
| |
| // last unref |
| grpc_slice_unref(slice); |
| EXPECT_EQ(do_nothing_with_len_1_calls, 1); |
| } |
| |
| class GrpcSliceSizedTest : public ::testing::TestWithParam<size_t> {}; |
| |
| TEST_P(GrpcSliceSizedTest, SliceSubWorks) { |
| const auto length = GetParam(); |
| |
| grpc_slice slice; |
| grpc_slice sub; |
| unsigned i, j, k; |
| |
| // Create a slice in which each byte is equal to the distance from it to the |
| // beginning of the slice. |
| slice = grpc_slice_malloc(length); |
| for (i = 0; i < length; i++) { |
| GRPC_SLICE_START_PTR(slice)[i] = static_cast<uint8_t>(i); |
| } |
| |
| // Ensure that for all subsets length is correct and that we start on the |
| // correct byte. Additionally check that no copies were made. |
| for (i = 0; i < length; i++) { |
| for (j = i; j < length; j++) { |
| sub = grpc_slice_sub(slice, i, j); |
| EXPECT_EQ(GRPC_SLICE_LENGTH(sub), j - i); |
| for (k = 0; k < j - i; k++) { |
| EXPECT_EQ(GRPC_SLICE_START_PTR(sub)[k], (uint8_t)(i + k)); |
| } |
| grpc_slice_unref(sub); |
| } |
| } |
| grpc_slice_unref(slice); |
| } |
| |
| static void check_head_tail(grpc_slice slice, grpc_slice head, |
| grpc_slice tail) { |
| EXPECT_EQ(GRPC_SLICE_LENGTH(slice), |
| GRPC_SLICE_LENGTH(head) + GRPC_SLICE_LENGTH(tail)); |
| EXPECT_EQ(0, memcmp(GRPC_SLICE_START_PTR(slice), GRPC_SLICE_START_PTR(head), |
| GRPC_SLICE_LENGTH(head))); |
| EXPECT_EQ(0, memcmp(GRPC_SLICE_START_PTR(slice) + GRPC_SLICE_LENGTH(head), |
| GRPC_SLICE_START_PTR(tail), GRPC_SLICE_LENGTH(tail))); |
| } |
| |
| TEST_P(GrpcSliceSizedTest, SliceSplitHeadWorks) { |
| const auto length = GetParam(); |
| |
| grpc_slice slice; |
| grpc_slice head, tail; |
| size_t i; |
| |
| gpr_log(GPR_INFO, "length=%" PRIuPTR, length); |
| |
| // Create a slice in which each byte is equal to the distance from it to the |
| // beginning of the slice. |
| slice = grpc_slice_malloc(length); |
| for (i = 0; i < length; i++) { |
| GRPC_SLICE_START_PTR(slice)[i] = static_cast<uint8_t>(i); |
| } |
| |
| // Ensure that for all subsets length is correct and that we start on the |
| // correct byte. Additionally check that no copies were made. |
| for (i = 0; i < length; i++) { |
| tail = grpc_slice_ref(slice); |
| head = grpc_slice_split_head(&tail, i); |
| check_head_tail(slice, head, tail); |
| grpc_slice_unref(tail); |
| grpc_slice_unref(head); |
| } |
| |
| grpc_slice_unref(slice); |
| } |
| |
| TEST_P(GrpcSliceSizedTest, SliceSplitTailWorks) { |
| const auto length = GetParam(); |
| |
| grpc_slice slice; |
| grpc_slice head, tail; |
| size_t i; |
| |
| gpr_log(GPR_INFO, "length=%" PRIuPTR, length); |
| |
| // Create a slice in which each byte is equal to the distance from it to the |
| // beginning of the slice. |
| slice = grpc_slice_malloc(length); |
| for (i = 0; i < length; i++) { |
| GRPC_SLICE_START_PTR(slice)[i] = static_cast<uint8_t>(i); |
| } |
| |
| // Ensure that for all subsets length is correct and that we start on the |
| // correct byte. Additionally check that no copies were made. |
| for (i = 0; i < length; i++) { |
| head = grpc_slice_ref(slice); |
| tail = grpc_slice_split_tail(&head, i); |
| check_head_tail(slice, head, tail); |
| grpc_slice_unref(tail); |
| grpc_slice_unref(head); |
| } |
| |
| grpc_slice_unref(slice); |
| } |
| |
| INSTANTIATE_TEST_SUITE_P(GrpcSliceSizedTest, GrpcSliceSizedTest, |
| ::testing::ValuesIn([] { |
| std::vector<size_t> out; |
| for (size_t i = 0; i < 128; i++) { |
| out.push_back(i); |
| } |
| return out; |
| }()), |
| [](const testing::TestParamInfo<size_t>& info) { |
| return std::to_string(info.param); |
| }); |
| |
| TEST(GrpcSliceTest, SliceFromCopiedString) { |
| static const char* text = "HELLO WORLD!"; |
| grpc_slice slice; |
| |
| slice = grpc_slice_from_copied_string(text); |
| EXPECT_EQ(strlen(text), GRPC_SLICE_LENGTH(slice)); |
| EXPECT_EQ( |
| 0, memcmp(text, GRPC_SLICE_START_PTR(slice), GRPC_SLICE_LENGTH(slice))); |
| grpc_slice_unref(slice); |
| } |
| |
| TEST(GrpcSliceTest, MovedStringSlice) { |
| // Small string should be inlined. |
| constexpr char kSmallStr[] = "hello12345"; |
| char* small_ptr = strdup(kSmallStr); |
| grpc_slice small = |
| grpc_slice_from_moved_string(grpc_core::UniquePtr<char>(small_ptr)); |
| EXPECT_EQ(GRPC_SLICE_LENGTH(small), strlen(kSmallStr)); |
| EXPECT_NE(GRPC_SLICE_START_PTR(small), reinterpret_cast<uint8_t*>(small_ptr)); |
| grpc_slice_unref(small); |
| |
| // Large string should be move the reference. |
| constexpr char kSLargeStr[] = "hello123456789123456789123456789"; |
| char* large_ptr = strdup(kSLargeStr); |
| grpc_slice large = |
| grpc_slice_from_moved_string(grpc_core::UniquePtr<char>(large_ptr)); |
| EXPECT_EQ(GRPC_SLICE_LENGTH(large), strlen(kSLargeStr)); |
| EXPECT_EQ(GRPC_SLICE_START_PTR(large), reinterpret_cast<uint8_t*>(large_ptr)); |
| grpc_slice_unref(large); |
| |
| // Moved buffer must respect the provided length not the actual length of the |
| // string. |
| large_ptr = strdup(kSLargeStr); |
| small = grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char>(large_ptr), |
| strlen(kSmallStr)); |
| EXPECT_EQ(GRPC_SLICE_LENGTH(small), strlen(kSmallStr)); |
| EXPECT_NE(GRPC_SLICE_START_PTR(small), reinterpret_cast<uint8_t*>(large_ptr)); |
| grpc_slice_unref(small); |
| } |
| |
| TEST(GrpcSliceTest, StringViewFromSlice) { |
| constexpr char kStr[] = "foo"; |
| absl::string_view sv( |
| grpc_core::StringViewFromSlice(grpc_slice_from_static_string(kStr))); |
| EXPECT_EQ(sv, kStr); |
| } |
| |
| namespace grpc_core { |
| namespace { |
| |
| TEST(SliceTest, FromSmallCopiedString) { |
| Slice slice = Slice::FromCopiedString("hello"); |
| EXPECT_EQ(slice[0], 'h'); |
| EXPECT_EQ(slice[1], 'e'); |
| EXPECT_EQ(slice[2], 'l'); |
| EXPECT_EQ(slice[3], 'l'); |
| EXPECT_EQ(slice[4], 'o'); |
| EXPECT_EQ(slice.size(), 5); |
| EXPECT_EQ(slice.length(), 5); |
| EXPECT_EQ(slice.as_string_view(), "hello"); |
| EXPECT_EQ(0, memcmp(slice.data(), "hello", 5)); |
| } |
| |
| class SliceSizedTest : public ::testing::TestWithParam<size_t> {}; |
| |
| std::string RandomString(size_t length) { |
| std::string str; |
| std::random_device r; |
| for (size_t i = 0; i < length; ++i) { |
| str.push_back(static_cast<char>(r())); |
| } |
| return str; |
| } |
| |
| TEST_P(SliceSizedTest, FromCopiedString) { |
| const std::string str = RandomString(GetParam()); |
| Slice slice = Slice::FromCopiedString(str); |
| |
| EXPECT_EQ(slice.size(), str.size()); |
| EXPECT_EQ(slice.length(), str.size()); |
| EXPECT_EQ(slice.as_string_view(), str); |
| EXPECT_EQ(0, memcmp(slice.data(), str.data(), str.size())); |
| for (size_t i = 0; i < str.size(); ++i) { |
| EXPECT_EQ(slice[i], uint8_t(str[i])); |
| } |
| |
| EXPECT_TRUE(slice.is_equivalent(slice.Ref())); |
| EXPECT_TRUE(slice.is_equivalent(slice.AsOwned())); |
| EXPECT_TRUE(slice.is_equivalent(slice.Ref().TakeOwned())); |
| } |
| |
| INSTANTIATE_TEST_SUITE_P(SliceSizedTest, SliceSizedTest, |
| ::testing::ValuesIn([] { |
| std::vector<size_t> out; |
| size_t i = 1; |
| size_t j = 1; |
| while (i < 1024 * 1024) { |
| out.push_back(j); |
| size_t n = i + j; |
| i = j; |
| j = n; |
| } |
| return out; |
| }()), |
| [](const ::testing::TestParamInfo<size_t>& info) { |
| return std::to_string(info.param); |
| }); |
| |
| class TakeUniquelyOwnedTest |
| : public ::testing::TestWithParam<std::function<Slice()>> {}; |
| |
| TEST_P(TakeUniquelyOwnedTest, TakeUniquelyOwned) { |
| auto owned = GetParam()().TakeUniquelyOwned(); |
| auto* refcount = owned.c_slice().refcount; |
| if (refcount != nullptr && refcount != grpc_slice_refcount::NoopRefcount()) { |
| EXPECT_TRUE(refcount->IsUnique()); |
| } |
| } |
| |
| INSTANTIATE_TEST_SUITE_P( |
| TakeUniquelyOwnedTest, TakeUniquelyOwnedTest, |
| ::testing::Values( |
| []() { |
| static const NoDestruct<std::string> big('a', 1024); |
| return Slice::FromStaticBuffer(big->data(), big->size()); |
| }, |
| []() { |
| static const NoDestruct<std::string> big('a', 1024); |
| return Slice::FromCopiedBuffer(big->data(), big->size()); |
| }, |
| []() { |
| static const NoDestruct<std::string> big('a', 1024); |
| static const NoDestruct<Slice> big_slice( |
| Slice::FromCopiedBuffer(big->data(), big->size())); |
| return big_slice->Ref(); |
| }, |
| []() { return Slice::FromStaticString("hello"); })); |
| |
| size_t SumSlice(const Slice& slice) { |
| size_t x = 0; |
| for (size_t i = 0; i < slice.size(); ++i) { |
| x += slice[i]; |
| } |
| return x; |
| } |
| |
| TEST(SliceTest, ExternalAsOwned) { |
| auto external_string = std::make_unique<std::string>(RandomString(1024)); |
| Slice slice = Slice::FromExternalString(*external_string); |
| const auto initial_sum = SumSlice(slice); |
| Slice owned = slice.AsOwned(); |
| EXPECT_EQ(initial_sum, SumSlice(owned)); |
| external_string.reset(); |
| // In ASAN (where we can be sure that it'll crash), go ahead and read the |
| // bytes we just deleted. |
| if (BuiltUnderAsan()) { |
| ASSERT_DEATH({ gpr_log(GPR_DEBUG, "%" PRIdPTR, SumSlice(slice)); }, ""); |
| } |
| EXPECT_EQ(initial_sum, SumSlice(owned)); |
| } |
| |
| TEST(SliceTest, ExternalTakeOwned) { |
| std::unique_ptr<std::string> external_string( |
| new std::string(RandomString(1024))); |
| SumSlice(Slice::FromExternalString(*external_string).TakeOwned()); |
| } |
| |
| TEST(SliceTest, StaticSlice) { |
| static const char* hello = "hello"; |
| StaticSlice slice = StaticSlice::FromStaticString(hello); |
| EXPECT_EQ(slice[0], 'h'); |
| EXPECT_EQ(slice[1], 'e'); |
| EXPECT_EQ(slice[2], 'l'); |
| EXPECT_EQ(slice[3], 'l'); |
| EXPECT_EQ(slice[4], 'o'); |
| EXPECT_EQ(slice.size(), 5); |
| EXPECT_EQ(slice.length(), 5); |
| EXPECT_EQ(slice.as_string_view(), "hello"); |
| EXPECT_EQ(0, memcmp(slice.data(), "hello", 5)); |
| EXPECT_EQ(reinterpret_cast<const uint8_t*>(hello), slice.data()); |
| } |
| |
| TEST(SliceTest, SliceEquality) { |
| auto a = Slice::FromCopiedString( |
| "hello world 123456789123456789123456789123456789123456789"); |
| auto b = Slice::FromCopiedString( |
| "hello world 123456789123456789123456789123456789123456789"); |
| auto c = Slice::FromCopiedString( |
| "this is not the same as the other two strings!!!!!!!!!!!!"); |
| EXPECT_FALSE(a.is_equivalent(b)); |
| EXPECT_FALSE(b.is_equivalent(a)); |
| EXPECT_EQ(a, b); |
| EXPECT_NE(a, c); |
| EXPECT_NE(b, c); |
| EXPECT_EQ(a, "hello world 123456789123456789123456789123456789123456789"); |
| EXPECT_NE(a, "pfoooey"); |
| EXPECT_EQ(c, "this is not the same as the other two strings!!!!!!!!!!!!"); |
| EXPECT_EQ("hello world 123456789123456789123456789123456789123456789", a); |
| EXPECT_NE("pfoooey", a); |
| EXPECT_EQ("this is not the same as the other two strings!!!!!!!!!!!!", c); |
| } |
| |
| TEST(SliceTest, LetsGetMutable) { |
| auto slice = MutableSlice::FromCopiedString("hello"); |
| EXPECT_EQ(slice[0], 'h'); |
| EXPECT_EQ(slice[1], 'e'); |
| EXPECT_EQ(slice[2], 'l'); |
| EXPECT_EQ(slice[3], 'l'); |
| EXPECT_EQ(slice[4], 'o'); |
| EXPECT_EQ(slice.size(), 5); |
| EXPECT_EQ(slice.length(), 5); |
| EXPECT_EQ(slice.as_string_view(), "hello"); |
| EXPECT_EQ(0, memcmp(slice.data(), "hello", 5)); |
| slice[2] = 'm'; |
| EXPECT_EQ(slice.as_string_view(), "hemlo"); |
| for (auto& c : slice) c++; |
| EXPECT_EQ(slice.as_string_view(), "ifnmp"); |
| } |
| |
| TEST(SliceTest, SliceCastWorks) { |
| using ::grpc_event_engine::experimental::internal::SliceCast; |
| Slice test = Slice::FromCopiedString("hello world!"); |
| const grpc_slice& slice = SliceCast<grpc_slice>(test); |
| EXPECT_EQ(&slice, &test.c_slice()); |
| const Slice& other = SliceCast<Slice>(slice); |
| EXPECT_EQ(&other, &test); |
| } |
| |
| } // namespace |
| } // namespace grpc_core |
| |
| int main(int argc, char** argv) { |
| ::testing::InitGoogleTest(&argc, argv); |
| return RUN_ALL_TESTS(); |
| } |