Function AssertFileContents

cpp/src/arrow/filesystem/test_util.cc:112–127

};  // namespace

void AssertFileContents(FileSystem* fs, const std::string& path,
                        const std::string& expected_data) {
  ASSERT_OK_AND_ASSIGN(FileInfo info, fs->GetFileInfo(path));
  ASSERT_EQ(info.type(), FileType::File) << "For path '" << path << "'";
  ASSERT_EQ(info.size(), static_cast<int64_t>(expected_data.length()))
      << "For path '" << path << "'";

  ASSERT_OK_AND_ASSIGN(auto stream, fs->OpenInputStream(path));
  ASSERT_OK_AND_ASSIGN(auto buffer, stream->Read(info.size()));
  AssertBufferEqual(*buffer, expected_data);
  // No data left in stream
  ASSERT_OK_AND_ASSIGN(auto leftover, stream->Read(1));
  ASSERT_EQ(leftover->size(), 0);

  ASSERT_OK(stream->Close());
}

void CreateFile(FileSystem* fs, const std::string& path, const std::string& data) {
  ASSERT_OK_AND_ASSIGN(auto stream, fs->OpenOutputStream(path));