3 Testing Failures on Local

[paradise-runner]

When running tests locally on a fresh master build, 3 tests fail without any changes to code.

1. 2 of the failures occur on test_it_detects_file_metadata where basic.csv and xlsx_with_zip_mimetype.xlsx produce incorrect mimetypes. Confirmed occurring on macos and ubuntu per @thomasjohns.

• application/csv for the csv when it should be text/plain
• application/vnd.openxmlformats-officedocument.spreadsheetml.sheet for the xlsx file when it should be application/zip

2. test_node_stream_property_returns_at_byte_0_after_parse fails when the node._stream returns the byte position at 12 instead of 0. After some initial testing this seems to be occurring in the pd.read_csv in fables/parse.py/parse_csv

[bk521234]

I think I found the culprit for 2.

Python 3.8.5 (default, Jul 28 2020, 12:59:40) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import io
>>> import pandas as pd
>>> 
>>> stream = io.BytesIO(b"a,b\n1,2\n3,4\n")
>>> df = pd.read_csv(stream)
>>> df
   a  b
0  1  2
1  3  4
>>> stream.tell()
12
>>>

pandas version

$ pip freeze | grep pandas
pandas==1.0.1

[bk521234]

put out a fix for list item 2. #53

tests in 1 are still broken for me locally on fresh pull from master branch.