@Test
void loadEmptyFile() throws IOException {

    testFile = Files.createTempFile(null, null).toFile();
    FileUtils.write(testFile, "", "utf-8");
    assertThrows(Exception.class, () -> {
        loader.loadAccountBalances(testFile, null);
    });
    assertThat(accountBalanceRepository.count()).isZero();
    assertThat(accountBalanceSetRepository.count()).isZero();
}