tests_error

class FileDeviceMock : public QFileDevice {
 public:
  MOCK_METHOD(qint64, readLineData, (char*, qint64 ), (override));
  MOCK_METHOD(bool, atEnd, (), (const, override));
  MOCK_METHOD(bool, open, (QIODevice::OpenMode), (override));
  MOCK_METHOD((void), close, (), (override));
};

class FileDeviceReader : public Test {
 protected:
  const std::string empty = "";
  const std::string first_line_with_data =
      "first_line_with_data";

  const std::string second_line_with_data = "second_line_with_data";
};

TEST_F(CsvFileReaderTests, ShouldSuccessfulyReadEmptyFile) {
  NiceMock<FileDeviceMock>* fileMock = new NiceMock<FileDeviceMock>();
  ileReader reader{fileMock};

  EXPECT_CALL(*fileMock, open(_)).WillRepeatedly(Return(true));

  EXPECT_CALL(*fileMock, readLineData(_, _))
      .WillOnce(Invoke([this](char* data, qint64) {
        first_line_with_data.copy(data, first_line_with_data.size());
        return first_line_with_data.size();
      }));

  EXPECT_CALL(*fileMock, readLineData(_, _))
      .WillOnce(Invoke([this](char* data, qint64) {
        second_line_with_data.copy(data, second_line_with_data.size());
        return second_line_with_data.size();
      }));
  EXPECT_CALL(*fileMock, atEnd()).WillOnce(Return(true));

  reader.run();
}