projektAI/venv/Lib/site-packages/pandas/tests/util/test_util.py

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2021-06-06 22:13:05 +02:00
import os
import pytest
import pandas.compat as compat
import pandas._testing as tm
def test_rands():
r = tm.rands(10)
assert len(r) == 10
def test_rands_array_1d():
arr = tm.rands_array(5, size=10)
assert arr.shape == (10,)
assert len(arr[0]) == 5
def test_rands_array_2d():
arr = tm.rands_array(7, size=(10, 10))
assert arr.shape == (10, 10)
assert len(arr[1, 1]) == 7
def test_numpy_err_state_is_default():
expected = {"over": "warn", "divide": "warn", "invalid": "warn", "under": "ignore"}
import numpy as np
# The error state should be unchanged after that import.
assert np.geterr() == expected
def test_convert_rows_list_to_csv_str():
rows_list = ["aaa", "bbb", "ccc"]
ret = tm.convert_rows_list_to_csv_str(rows_list)
if compat.is_platform_windows():
expected = "aaa\r\nbbb\r\nccc\r\n"
else:
expected = "aaa\nbbb\nccc\n"
assert ret == expected
def test_create_temp_directory():
with tm.ensure_clean_dir() as path:
assert os.path.exists(path)
assert os.path.isdir(path)
assert not os.path.exists(path)
@pytest.mark.parametrize("strict_data_files", [True, False])
def test_datapath_missing(datapath):
with pytest.raises(ValueError, match="Could not find file"):
datapath("not_a_file")
def test_datapath(datapath):
args = ("io", "data", "csv", "iris.csv")
result = datapath(*args)
expected = os.path.join(os.path.dirname(os.path.dirname(__file__)), *args)
assert result == expected
def test_rng_context():
import numpy as np
expected0 = 1.764052345967664
expected1 = 1.6243453636632417
with tm.RNGContext(0):
with tm.RNGContext(1):
assert np.random.randn() == expected1
assert np.random.randn() == expected0
def test_external_error_raised():
with tm.external_error_raised(TypeError):
raise TypeError("Should not check this error message, so it will pass")