/
test_remotes.py
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/
test_remotes.py
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# -*- coding: utf-8 -*-
from __future__ import absolute_import, print_function, division
import sys
import os
from importlib import import_module
from petl.compat import PY3
from petl.test.helpers import ieq, eq_
from petl.io.avro import fromavro, toavro
from petl.io.csv import fromcsv, tocsv
from petl.io.json import fromjson, tojson
from petl.io.xlsx import fromxlsx, toxlsx
from petl.io.xls import fromxls, toxls
from petl.util.vis import look
# region Codec test cases
def test_helper_local():
if PY3:
_ensure_dir("./tmp")
_write_read_into_url("./tmp/example.")
def test_helper_fsspec():
try:
# pylint: disable=unused-import
import fsspec # noqa: F401
except ImportError as e:
print("SKIP FSSPEC helper tests: %s" % e, file=sys.stderr)
else:
_write_read_from_env_matching("PETL_TEST_")
def test_helper_smb():
try:
# pylint: disable=unused-import
import smbclient # noqa: F401
except ImportError as e:
print("SKIP SMB helper tests: %s" % e, file=sys.stderr)
else:
_write_read_from_env_url("PETL_SMB_URL")
def test_helper_smb_url_parse():
from petl.io.remotes import _parse_smb_url
url = r"smb://workgroup;user:password@server:444/share/folder/file.csv"
domain, host, port, user, passwd, server_path = _parse_smb_url(url)
# print("Parsed:", domain, host, port, user, passwd, server_path)
eq_(domain, r"workgroup")
eq_(host, r"server")
eq_(port, 444)
eq_(user, r"user")
eq_(passwd, r"password")
eq_(server_path, "\\\\server\\share\\folder\\file.csv")
# endregion
# region Execution
def _ensure_dir(directory):
if not os.path.exists(directory):
os.makedirs(directory)
def _write_read_from_env_matching(prefix):
q = 0
for variable, base_url in os.environ.items():
if variable.upper().startswith(prefix.upper()):
fmsg = "\n {}: {} -> ".format(variable, base_url)
print(fmsg, file=sys.stderr, end="")
_write_read_into_url(base_url)
print("DONE ", file=sys.stderr, end="")
q += 1
if q < 1:
msg = """SKIPPED
For testing remote source define a environment variable:
$ export PETL_TEST_<protocol>='<protocol>://myuser:mypassword@host:port/path/to/folder'"""
print(msg, file=sys.stderr)
def _write_read_from_env_url(env_var_name):
base_url = os.getenv(env_var_name, "skip")
if base_url == "skip":
print("SKIPPED ", file=sys.stderr, end="")
else:
_write_read_into_url(base_url)
print("DONE ", file=sys.stderr, end="")
def _write_read_into_url(base_url):
_write_read_file_into_url(base_url, "filename10.csv")
_write_read_file_into_url(base_url, "filename11.csv", "gz")
_write_read_file_into_url(base_url, "filename12.csv", "xz")
_write_read_file_into_url(base_url, "filename13.csv", "zst")
_write_read_file_into_url(base_url, "filename14.csv", "lz4")
_write_read_file_into_url(base_url, "filename15.csv", "snappy")
_write_read_file_into_url(base_url, "filename20.json")
_write_read_file_into_url(base_url, "filename21.json", "gz")
_write_read_file_into_url(base_url, "filename30.avro", pkg='fastavro')
_write_read_file_into_url(base_url, "filename40.xlsx", pkg='openpyxl')
_write_read_file_into_url(base_url, "filename50.xls", pkg='xlwt')
def _build_source_url_from(base_url, filename, compression=None):
is_local = base_url.startswith("./")
if compression is not None:
if is_local:
return None
filename = filename + "." + compression
import fsspec
codec = fsspec.utils.infer_compression(filename)
if codec is None:
print("\n - %s SKIPPED " % filename, file=sys.stderr, end="")
return None
print("\n - %s " % filename, file=sys.stderr, end="")
if is_local:
source_url = base_url + filename
else:
source_url = os.path.join(base_url, filename)
return source_url
def _write_read_file_into_url(base_url, filename, compression=None, pkg=None):
if not _is_installed(pkg, filename):
return
source_url = _build_source_url_from(base_url, filename, compression)
if source_url is None:
return
actual = None
if ".avro" in filename:
toavro(_table, source_url)
actual = fromavro(source_url)
elif ".xlsx" in filename:
toxlsx(_table, source_url, 'test1', mode='overwrite')
toxlsx(_table2, source_url, 'test2', mode='add')
actual = fromxlsx(source_url, 'test1')
elif ".xls" in filename:
toxls(_table, source_url, 'test')
actual = fromxls(source_url, 'test')
elif ".json" in filename:
tojson(_table, source_url)
actual = fromjson(source_url)
elif ".csv" in filename:
tocsv(_table, source_url, encoding="ascii", lineterminator="\n")
actual = fromcsv(source_url, encoding="ascii")
if actual is not None:
_show__rows_from("Expected:", _table)
_show__rows_from("Actual:", actual)
ieq(_table, actual)
ieq(_table, actual) # verify can iterate twice
else:
print("\n - %s SKIPPED " % filename, file=sys.stderr, end="")
def _show__rows_from(label, test_rows, limit=0):
print(label)
print(look(test_rows, limit=limit))
def _is_installed(package_name, message=None):
if package_name is None:
return True # Not required
try:
mod = import_module(package_name)
found = mod is not None
if not found:
msg = message or package_name
print("\n - %s SKIPPED " % msg, file=sys.stderr, end="")
return found
except Exception as exm:
print(exm, file=sys.stderr)
return False
# endregion
# region Mockup data
_table = (
(u"name", u"friends", u"age"),
(u"Bob", "42", "33"),
(u"Jim", "13", "69"),
(u"Joe", "86", "17"),
(u"Ted", "23", "51"),
)
_table2 = (
(u"name", u"friends", u"age"),
(u"Giannis", "31", "12"),
(u"James", "38", "8"),
(u"Stephen", "28", "4"),
(u"Jason", "23", "12"),
)
# endregion