#!/usr/bin/env python

##
# Licensed to the Apache Software Foundation (ASF) under one
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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
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from __future__ import absolute_import, division, print_function

import os
import unittest

import avro
from avro import datafile, io

_INTEROP_DATA_DIR = os.path.join(os.path.dirname(avro.__file__), 'test', 'interop', 'data')

@unittest.skipUnless(os.path.exists(_INTEROP_DATA_DIR),
                     "{} does not exist".format(_INTEROP_DATA_DIR))
class TestDataFileInterop(unittest.TestCase):
    def test_interop(self):
        """Test Interop"""
        for f in os.listdir(_INTEROP_DATA_DIR):
            filename = os.path.join(_INTEROP_DATA_DIR, f)
            assert os.stat(filename).st_size > 0
            base_ext = os.path.splitext(os.path.basename(f))[0].split('_', 1)
            if len(base_ext) < 2 or base_ext[1] in datafile.VALID_CODECS:
                print('READING %s' % f)
                print()

                # read data in binary from file
                datum_reader = io.DatumReader()
                with open(filename, 'rb') as reader:
                    dfr = datafile.DataFileReader(reader, datum_reader)
                    i = 0
                    for i, datum in enumerate(dfr, 1):
                        assert datum is not None
                    assert i > 0
            else:
                print('SKIPPING %s due to an unsupported codec' % f)
                print()


if __name__ == '__main__':
    unittest.main()