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TST: Fixturize series/test_constructors.py (pandas-dev#22965)
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Anjali2019 authored and jreback committed Oct 4, 2018
1 parent 45d3bb7 commit 4c78b97
Showing 1 changed file with 17 additions and 19 deletions.
36 changes: 17 additions & 19 deletions pandas/tests/series/test_constructors.py
Original file line number Diff line number Diff line change
Expand Up @@ -26,10 +26,8 @@
from pandas.util.testing import assert_series_equal
import pandas.util.testing as tm

from .common import TestData


class TestSeriesConstructors(TestData):
class TestSeriesConstructors():

def test_invalid_dtype(self):
# GH15520
Expand All @@ -50,23 +48,23 @@ def test_scalar_conversion(self):
assert int(Series([1.])) == 1
assert long(Series([1.])) == 1

def test_constructor(self):
assert self.ts.index.is_all_dates
def test_constructor(self, datetime_series, empty_series):
assert datetime_series.index.is_all_dates

# Pass in Series
derived = Series(self.ts)
derived = Series(datetime_series)
assert derived.index.is_all_dates

assert tm.equalContents(derived.index, self.ts.index)
assert tm.equalContents(derived.index, datetime_series.index)
# Ensure new index is not created
assert id(self.ts.index) == id(derived.index)
assert id(datetime_series.index) == id(derived.index)

# Mixed type Series
mixed = Series(['hello', np.NaN], index=[0, 1])
assert mixed.dtype == np.object_
assert mixed[1] is np.NaN

assert not self.empty.index.is_all_dates
assert not empty_series.index.is_all_dates
assert not Series({}).index.is_all_dates
pytest.raises(Exception, Series, np.random.randn(3, 3),
index=np.arange(3))
Expand Down Expand Up @@ -977,27 +975,27 @@ def test_fromDict(self):
series = Series(data, dtype=float)
assert series.dtype == np.float64

def test_fromValue(self):
def test_fromValue(self, datetime_series):

nans = Series(np.NaN, index=self.ts.index)
nans = Series(np.NaN, index=datetime_series.index)
assert nans.dtype == np.float_
assert len(nans) == len(self.ts)
assert len(nans) == len(datetime_series)

strings = Series('foo', index=self.ts.index)
strings = Series('foo', index=datetime_series.index)
assert strings.dtype == np.object_
assert len(strings) == len(self.ts)
assert len(strings) == len(datetime_series)

d = datetime.now()
dates = Series(d, index=self.ts.index)
dates = Series(d, index=datetime_series.index)
assert dates.dtype == 'M8[ns]'
assert len(dates) == len(self.ts)
assert len(dates) == len(datetime_series)

# GH12336
# Test construction of categorical series from value
categorical = Series(0, index=self.ts.index, dtype="category")
expected = Series(0, index=self.ts.index).astype("category")
categorical = Series(0, index=datetime_series.index, dtype="category")
expected = Series(0, index=datetime_series.index).astype("category")
assert categorical.dtype == 'category'
assert len(categorical) == len(self.ts)
assert len(categorical) == len(datetime_series)
tm.assert_series_equal(categorical, expected)

def test_constructor_dtype_timedelta64(self):
Expand Down

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