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test_testing.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
import pandas as pd
import unittest
import warnings
import nose
import numpy as np
import sys
from pandas import Series
from pandas.util.testing import (
assert_almost_equal, assertRaisesRegexp, raise_with_traceback, assert_series_equal,
RNGContext
)
# let's get meta.
class TestAssertAlmostEqual(unittest.TestCase):
_multiprocess_can_split_ = True
def _assert_almost_equal_both(self, a, b, **kwargs):
assert_almost_equal(a, b, **kwargs)
assert_almost_equal(b, a, **kwargs)
def _assert_not_almost_equal_both(self, a, b, **kwargs):
self.assertRaises(AssertionError, assert_almost_equal, a, b, **kwargs)
self.assertRaises(AssertionError, assert_almost_equal, b, a, **kwargs)
def test_assert_almost_equal_numbers(self):
self._assert_almost_equal_both(1.1, 1.1)
self._assert_almost_equal_both(1.1, 1.100001)
self._assert_almost_equal_both(np.int16(1), 1.000001)
self._assert_almost_equal_both(np.float64(1.1), 1.1)
self._assert_almost_equal_both(np.uint32(5), 5)
self._assert_not_almost_equal_both(1.1, 1)
self._assert_not_almost_equal_both(1.1, True)
self._assert_not_almost_equal_both(1, 2)
self._assert_not_almost_equal_both(1.0001, np.int16(1))
def test_assert_almost_equal_numbers_with_zeros(self):
self._assert_almost_equal_both(0, 0)
self._assert_almost_equal_both(0.000001, 0)
self._assert_not_almost_equal_both(0.001, 0)
self._assert_not_almost_equal_both(1, 0)
def test_assert_almost_equal_numbers_with_mixed(self):
self._assert_not_almost_equal_both(1, 'abc')
self._assert_not_almost_equal_both(1, [1,])
self._assert_not_almost_equal_both(1, object())
def test_assert_almost_equal_edge_case_ndarrays(self):
self._assert_almost_equal_both(np.array([], dtype='M8[ns]'),
np.array([], dtype='float64'))
self._assert_almost_equal_both(np.array([], dtype=str),
np.array([], dtype='int64'))
def test_assert_almost_equal_dicts(self):
self._assert_almost_equal_both({'a': 1, 'b': 2}, {'a': 1, 'b': 2})
self._assert_not_almost_equal_both({'a': 1, 'b': 2}, {'a': 1, 'b': 3})
self._assert_not_almost_equal_both(
{'a': 1, 'b': 2}, {'a': 1, 'b': 2, 'c': 3}
)
self._assert_not_almost_equal_both({'a': 1}, 1)
self._assert_not_almost_equal_both({'a': 1}, 'abc')
self._assert_not_almost_equal_both({'a': 1}, [1,])
def test_assert_almost_equal_dict_like_object(self):
class DictLikeObj(object):
def keys(self):
return ('a',)
def __getitem__(self, item):
if item == 'a':
return 1
self._assert_almost_equal_both({'a': 1}, DictLikeObj())
self._assert_not_almost_equal_both({'a': 2}, DictLikeObj())
def test_assert_almost_equal_strings(self):
self._assert_almost_equal_both('abc', 'abc')
self._assert_not_almost_equal_both('abc', 'abcd')
self._assert_not_almost_equal_both('abc', 'abd')
self._assert_not_almost_equal_both('abc', 1)
self._assert_not_almost_equal_both('abc', [1,])
def test_assert_almost_equal_iterables(self):
self._assert_almost_equal_both([1, 2, 3], [1, 2, 3])
self._assert_almost_equal_both(np.array([1, 2, 3]), [1, 2, 3])
# Can't compare generators
self._assert_not_almost_equal_both(iter([1, 2, 3]), [1, 2, 3])
self._assert_not_almost_equal_both([1, 2, 3], [1, 2, 4])
self._assert_not_almost_equal_both([1, 2, 3], [1, 2, 3, 4])
self._assert_not_almost_equal_both([1, 2, 3], 1)
def test_assert_almost_equal_null(self):
self._assert_almost_equal_both(None, None)
self._assert_almost_equal_both(None, np.NaN)
self._assert_not_almost_equal_both(None, 0)
self._assert_not_almost_equal_both(np.NaN, 0)
def test_assert_almost_equal_inf(self):
self._assert_almost_equal_both(np.inf, np.inf)
self._assert_almost_equal_both(np.inf, float("inf"))
self._assert_not_almost_equal_both(np.inf, 0)
class TestUtilTesting(unittest.TestCase):
_multiprocess_can_split_ = True
def test_raise_with_traceback(self):
with assertRaisesRegexp(LookupError, "error_text"):
try:
raise ValueError("THIS IS AN ERROR")
except ValueError as e:
e = LookupError("error_text")
raise_with_traceback(e)
with assertRaisesRegexp(LookupError, "error_text"):
try:
raise ValueError("This is another error")
except ValueError:
e = LookupError("error_text")
_, _, traceback = sys.exc_info()
raise_with_traceback(e, traceback)
class TestAssertSeriesEqual(unittest.TestCase):
_multiprocess_can_split_ = True
def _assert_equal(self, x, y, **kwargs):
assert_series_equal(x,y,**kwargs)
assert_series_equal(y,x,**kwargs)
def _assert_not_equal(self, a, b, **kwargs):
self.assertRaises(AssertionError, assert_series_equal, a, b, **kwargs)
self.assertRaises(AssertionError, assert_series_equal, b, a, **kwargs)
def test_equal(self):
self._assert_equal(Series(range(3)),Series(range(3)))
self._assert_equal(Series(list('abc')),Series(list('abc')))
def test_not_equal(self):
self._assert_not_equal(Series(range(3)),Series(range(3))+1)
self._assert_not_equal(Series(list('abc')),Series(list('xyz')))
self._assert_not_equal(Series(range(3)),Series(range(4)))
self._assert_not_equal(Series(range(3)),Series(range(3),dtype='float64'))
self._assert_not_equal(Series(range(3)),Series(range(3),index=[1,2,4]))
# ATM meta data is not checked in assert_series_equal
# self._assert_not_equal(Series(range(3)),Series(range(3),name='foo'),check_names=True)
class TestRNGContext(unittest.TestCase):
def test_RNGContext(self):
expected0 = 1.764052345967664
expected1 = 1.6243453636632417
with RNGContext(0):
with RNGContext(1):
self.assertEqual(np.random.randn(), expected1)
self.assertEqual(np.random.randn(), expected0)