@Test
void readInvalidWhenFileHasMalformedTimestamp() throws IOException {

    List<String> lines = FileUtils.readLines(balanceFile, "utf-8");
    lines.remove(0);
    List<String> copy = new LinkedList<>();
    copy.add("Timestamp:AAAA-08-30T18:15:00.016002001Z");
    copy.addAll(lines);
    FileUtils.writeLines(testFile, copy);
    assertThrows(InvalidDatasetException.class, () -> {
        balanceFileReader.read(testFile);
    });
}