| // 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/output_stream_adapter.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| #include <string> |
| #include <utility> |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "absl/memory/memory.h" |
| #include "absl/status/status.h" |
| #include "tink/output_stream.h" |
| #include "tink/subtle/random.h" |
| #include "tink/util/ostream_output_stream.h" |
| |
| namespace crypto { |
| namespace tink { |
| namespace { |
| |
| std::unique_ptr<OutputStreamAdapter> GetOutputStreamAdapter( |
| int buffer_size, std::stringbuf** buffer_ref) { |
| auto string_stream = absl::make_unique<std::stringstream>(); |
| // Reference to the stringstream buffer used for later validation. |
| *buffer_ref = string_stream->rdbuf(); |
| auto output_stream = absl::make_unique<util::OstreamOutputStream>( |
| std::move(string_stream), buffer_size); |
| return absl::make_unique<OutputStreamAdapter>(std::move(output_stream)); |
| } |
| |
| TEST(OutputStreamAdapterTest, Basic) { |
| std::stringbuf* buffer_ref; |
| auto adapter = GetOutputStreamAdapter(-1, &buffer_ref); |
| auto write_result = adapter->Write("something"); |
| ASSERT_TRUE(write_result.status().ok()); |
| EXPECT_EQ(write_result.value(), 9); |
| EXPECT_TRUE(adapter->Close().ok()); |
| EXPECT_EQ(buffer_ref->str(), "something"); |
| } |
| |
| TEST(OutputStreamAdapterTest, MultipleWrite) { |
| std::stringbuf* buffer_ref; |
| auto adapter = GetOutputStreamAdapter(-1, &buffer_ref); |
| auto write_result = adapter->Write("something"); |
| ASSERT_TRUE(write_result.status().ok()); |
| EXPECT_EQ(write_result.value(), 9); |
| write_result = adapter->Write("123"); |
| ASSERT_TRUE(write_result.status().ok()); |
| EXPECT_EQ(write_result.value(), 3); |
| write_result = adapter->Write("456"); |
| ASSERT_TRUE(write_result.status().ok()); |
| EXPECT_EQ(write_result.value(), 3); |
| EXPECT_TRUE(adapter->Close().ok()); |
| EXPECT_EQ(buffer_ref->str(), "something123456"); |
| } |
| |
| TEST(OutputStreamAdapterTest, WriteAfterClose) { |
| std::stringbuf* buffer_ref; |
| auto adapter = GetOutputStreamAdapter(-1, &buffer_ref); |
| ASSERT_TRUE(adapter->Close().ok()); |
| auto status = adapter->Write("something").status(); |
| EXPECT_EQ(status.code(), absl::StatusCode::kFailedPrecondition); |
| EXPECT_THAT(std::string(status.message()), |
| testing::HasSubstr("Stream closed")); |
| } |
| |
| // In this test size of the OstreamOutputStream buffer is smaller than the |
| // size of data to be written, so multiple calls to Next() will be needed. |
| TEST(OutputStreamAdapterTest, MultipleNext) { |
| std::stringbuf* buffer_ref; |
| auto adapter = GetOutputStreamAdapter(10, &buffer_ref); |
| std::string data = subtle::Random::GetRandomBytes(35); |
| auto write_result = adapter->Write(data); |
| ASSERT_TRUE(write_result.status().ok()); |
| EXPECT_EQ(write_result.value(), 35); |
| EXPECT_TRUE(adapter->Close().ok()); |
| EXPECT_EQ(buffer_ref->str(), data); |
| } |
| |
| } // namespace |
| } // namespace tink |
| } // namespace crypto |