test_file_streaming.cpp

#include "caosdb/filestreaming/FileWriter.h"
#include "caosdb/filestreaming/FileReader.h"
#include <boost/filesystem/operations.hpp>  // for exists, file_size, remove
#include <boost/filesystem/path.hpp>        // for path
#include <boost/filesystem/path_traits.hpp> // for filesystem
#include <gtest/gtest-message.h>            // for Message
#include <gtest/gtest-test-part.h> // for TestPartResult, SuiteApiResolver
#include <gtest/gtest_pred_impl.h> // for Test, EXPECT_EQ, AssertionResult
#include <string>                  // for string

namespace fs = boost::filesystem;

namespace FileExchange {

class test_file_streaming : public ::testing::Test {
protected:
  fs::path test_file_name;

  void SetUp() override {
    test_file_name = fs::path("this_is_a_test_file_remove_me.dat");
  }

  void TearDown() override { fs::remove(test_file_name); }
};

TEST_F(test_file_streaming, test_file_writer_reader) {
  ASSERT_FALSE(fs::exists(test_file_name));

  FileWriter writer(test_file_name);
  std::string buffer_out(1024, 'c');
  for (int i = 0; i < 8; i++) {
    writer.write(buffer_out);
    EXPECT_EQ(fs::file_size(test_file_name), 1024 * (i + 1));
  }

  FileReader reader(test_file_name);
  std::string buffer_in(1024, '\0');
  for (int i = 0; i < 8; i++) {
    reader.read(buffer_in);
    EXPECT_EQ(buffer_in, std::string(1024, 'c'));
  }
}

} // namespace FileExchange