| // Copyright 2020 Google LLC |
| // |
| // 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 "tink/cc/input_stream_adapter.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| #include <string> |
| #include <utility> |
| |
| #include "gtest/gtest.h" |
| #include "absl/memory/memory.h" |
| #include "tink/input_stream.h" |
| #include "tink/subtle/random.h" |
| #include "tink/util/istream_input_stream.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace { |
| |
| std::unique_ptr<InputStreamAdapter> GetInputStreamAdapter( |
| int buffer_size, const std::string& data) { |
| auto string_stream = absl::make_unique<std::stringstream>(); |
| string_stream->write(data.data(), data.size()); |
| auto input_stream = absl::make_unique<util::IstreamInputStream>( |
| std::move(string_stream), buffer_size); |
| return absl::make_unique<InputStreamAdapter>(std::move(input_stream)); |
| } |
| |
| TEST(InputStreamAdapterTest, BasicRead) { |
| std::string data = subtle::Random::GetRandomBytes(10); |
| auto adapter = GetInputStreamAdapter(-1, data); |
| auto read_result = adapter->Read(10); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data); |
| } |
| |
| TEST(InputStreamAdapterTest, ReadEOFError) { |
| std::string data = subtle::Random::GetRandomBytes(10); |
| auto adapter = GetInputStreamAdapter(-1, data); |
| auto read_result = adapter->Read(10); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data); |
| read_result = adapter->Read(10); |
| EXPECT_EQ(read_result.status().code(), absl::StatusCode::kOutOfRange); |
| } |
| |
| TEST(InputStreamAdapterTest, MultipleRead) { |
| std::string data = subtle::Random::GetRandomBytes(15); |
| auto adapter = GetInputStreamAdapter(-1, data); |
| auto read_result = adapter->Read(5); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data.substr(0, 5)); |
| read_result = adapter->Read(5); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data.substr(5, 5)); |
| read_result = adapter->Read(5); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data.substr(10, 5)); |
| } |
| |
| // In this test size of the IstreamInputStream buffer is smaller than the |
| // size of data to be read. Only one call to Next() is made and hence the output |
| // is smaller. |
| TEST(InputStreamAdapterTest, OnlyOneNext) { |
| std::string data = subtle::Random::GetRandomBytes(40); |
| auto adapter = GetInputStreamAdapter(10, data); |
| auto read_result = adapter->Read(35); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data.substr(0, 10)); |
| } |
| |
| TEST(InputStreamAdapterTest, ReadLessThanAvailable) { |
| std::string data = subtle::Random::GetRandomBytes(20); |
| auto adapter = GetInputStreamAdapter(-1, data); |
| auto read_result = adapter->Read(10); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data.substr(0, 10)); |
| } |
| |
| TEST(InputStreamAdapterTest, ReadMoreThanAvailable) { |
| std::string data = subtle::Random::GetRandomBytes(20); |
| auto adapter = GetInputStreamAdapter(-1, data); |
| auto read_result = adapter->Read(30); |
| ASSERT_TRUE(read_result.status().ok()) << read_result.status(); |
| EXPECT_EQ(read_result.value(), data); |
| } |
| |
| TEST(InputStreamAdapterTest, ReadFromEmptyStream) { |
| auto adapter = GetInputStreamAdapter(-1, ""); |
| auto read_result = adapter->Read(10); |
| EXPECT_EQ(read_result.status().code(), absl::StatusCode::kOutOfRange); |
| } |
| |
| } // namespace |
| } // namespace tink |
| } // namespace crypto |