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import os.path
import unittest
from datetime import datetime
from tempfile import TemporaryDirectory
import numpy as np
from numpy.testing import assert_array_equal
from Orange.data import (
ContinuousVariable,
guess_data_type,
Table,
Domain,
StringVariable,
DiscreteVariable,
)
from Orange.data.io_util import update_origin, array_strptime, to_datetime
class TestIoUtil(unittest.TestCase):
def test_guess_continuous_w_nans(self):
self.assertIs(
guess_data_type(["9", "", "98", "?", "98", "98", "98"])[2],
ContinuousVariable)
def test_array_strptime(self):
a = array_strptime(["NaT", "2015"], "%Y").astype(object)
assert_array_equal(a, [None, datetime(2015, 1, 1)])
a = array_strptime(["nan", "1402-04-06"], "%Y-%d-%m").astype(object)
assert_array_equal(a, [None, datetime(1402, 6, 4)])
with self.assertRaises(ValueError):
array_strptime(["this is not a date"], "%Y")
assert_array_equal(
array_strptime(["this is not a date"], "%Y", errors="coerce").astype(object),
[None]
)
def test_to_datetime(self):
def assert_equal(a, b):
# convert to array of datetime objects
a = a.astype(object)
assert_array_equal(a, b)
assert_equal(
to_datetime(["1/1/2020", "2/1/2020"]),
[datetime(2020, 1, 1), datetime(2020, 2, 1)]
)
assert_equal(
to_datetime(["NaT", "1/1/2020", "2/1/2020"]),
[None, datetime(2020, 1, 1), datetime(2020, 2, 1)]
)
assert_equal(
to_datetime(["1/1/2020", "2/1/2020", "1/1/1400"]),
[datetime(2020, 1, 1), datetime(2020, 2, 1), datetime(1400, 1, 1)]
)
assert_equal(
to_datetime(["1|12|7000"], format="%d|%m|%Y"),
[datetime(7000, 12, 1)]
)
with self.assertRaises(ValueError):
to_datetime(["1012l0awd7"], format="%d|%m|%Y", errors="raise"),
assert_equal(
to_datetime(["1012l0awd7"], format="%d|%m|%Y", errors="coerce"),
[None]
)
class TestUpdateOrigin(unittest.TestCase):
FILE_NAMES = ["file1.txt", "file2.txt", "file3.txt"]
def setUp(self) -> None:
self.alt_dir = TemporaryDirectory() # pylint: disable=consider-using-with
self.var_string = var = StringVariable("Files")
files = self.FILE_NAMES + [var.Unknown]
self.table_string = Table.from_list(
Domain([], metas=[var]), np.array(files).reshape((-1, 1))
)
self.var_discrete = var = DiscreteVariable("Files", values=self.FILE_NAMES)
files = self.FILE_NAMES + [var.Unknown]
self.table_discrete = Table.from_list(
Domain([], metas=[var]), np.array(files).reshape((-1, 1))
)
def tearDown(self) -> None:
self.alt_dir.cleanup()
def __create_files(self):
for f in self.FILE_NAMES:
f = os.path.join(self.alt_dir.name, f)
with open(f, "w", encoding="utf8"):
pass
self.assertTrue(os.path.exists(f))
def test_origin_not_changed(self):
"""
Origin exist; keep it unchanged, even though dataset path also includes
files from column.
"""
with TemporaryDirectory() as dir_name:
self.var_string.attributes["origin"] = dir_name
update_origin(self.table_string, self.alt_dir.name)
self.assertEqual(
self.table_string.domain[self.var_string].attributes["origin"], dir_name
)
def test_origin_subdir(self):
"""
Origin is wrong but last dir in origin exit in the dataset file's path
"""
images_dir = os.path.join(self.alt_dir.name, "subdir")
os.mkdir(images_dir)
self.var_string.attributes["origin"] = "/a/b/subdir"
update_origin(self.table_string, os.path.join(self.alt_dir.name, "data.csv"))
self.assertEqual(
self.table_string.domain[self.var_string].attributes["origin"], images_dir
)
def test_origin_parents_subdir(self):
"""
Origin is wrong but last dir in origin exit in the dataset file
parent's directory
"""
# make the dir where dataset is placed
images_dir = os.path.join(self.alt_dir.name, "subdir")
os.mkdir(images_dir)
self.var_string.attributes["origin"] = "/a/b/subdir"
update_origin(self.table_string, os.path.join(images_dir, "data.csv"))
self.assertEqual(
self.table_string.domain[self.var_string].attributes["origin"], images_dir
)
def test_column_paths_subdir(self):
"""
Origin dir not exiting but paths from column exist in dataset's dir
"""
self.__create_files()
self.var_string.attributes["origin"] = "/a/b/non-exiting-dir"
update_origin(self.table_string, os.path.join(self.alt_dir.name, "data.csv"))
self.assertEqual(
self.table_string.domain[self.var_string].attributes["origin"],
self.alt_dir.name,
)
self.var_discrete.attributes["origin"] = "/a/b/non-exiting-dir"
update_origin(self.table_discrete, os.path.join(self.alt_dir.name, "data.csv"))
self.assertEqual(
self.table_discrete.domain[self.var_discrete].attributes["origin"],
self.alt_dir.name,
)
def test_column_paths_parents_subdir(self):
"""
Origin dir not exiting but paths from column exist in dataset parent's dir
"""
# make the dir where dataset is placed
dataset_dir = os.path.join(self.alt_dir.name, "subdir")
self.__create_files()
self.var_string.attributes["origin"] = "/a/b/non-exiting-dir"
update_origin(self.table_string, os.path.join(dataset_dir, "data.csv"))
self.assertEqual(
self.table_string.domain[self.var_string].attributes["origin"],
self.alt_dir.name,
)
self.var_discrete.attributes["origin"] = "/a/b/non-exiting-dir"
update_origin(self.table_discrete, os.path.join(dataset_dir, "data.csv"))
self.assertEqual(
self.table_discrete.domain[self.var_discrete].attributes["origin"],
self.alt_dir.name,
)
if __name__ == '__main__':
unittest.main()
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