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TST: Fixturize series/test_io.py #22972

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merged 3 commits into from
Oct 4, 2018
Merged

TST: Fixturize series/test_io.py #22972

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8f823af
Merge pull request #1 from pandas-dev/master
Anjali2019 Oct 3, 2018
41659e1
TST: Fixturize series/test_io.py
Anjali2019 Oct 3, 2018
15741b4
Fix lint issues
Anjali2019 Oct 3, 2018
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70 changes: 35 additions & 35 deletions pandas/tests/series/test_io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,8 @@
assert_frame_equal, ensure_clean)
import pandas.util.testing as tm

from .common import TestData


class TestSeriesToCSV(TestData):
class TestSeriesToCSV():

def read_csv(self, path, **kwargs):
params = dict(squeeze=True, index_col=0,
Expand All @@ -34,10 +32,10 @@ def read_csv(self, path, **kwargs):

return out

def test_from_csv_deprecation(self):
def test_from_csv_deprecation(self, datetime_series):
# see gh-17812
with ensure_clean() as path:
self.ts.to_csv(path, header=False)
datetime_series.to_csv(path, header=False)

with tm.assert_produces_warning(FutureWarning,
check_stacklevel=False):
Expand All @@ -46,7 +44,7 @@ def test_from_csv_deprecation(self):
assert_series_equal(depr_ts, ts)

@pytest.mark.parametrize("arg", ["path", "header", "both"])
def test_to_csv_deprecation(self, arg):
def test_to_csv_deprecation(self, arg, datetime_series):
# see gh-19715
with ensure_clean() as path:
if arg == "path":
Expand All @@ -57,18 +55,18 @@ def test_to_csv_deprecation(self, arg):
kwargs = dict(path=path)

with tm.assert_produces_warning(FutureWarning):
self.ts.to_csv(**kwargs)
datetime_series.to_csv(**kwargs)

# Make sure roundtrip still works.
ts = self.read_csv(path)
assert_series_equal(self.ts, ts, check_names=False)
assert_series_equal(datetime_series, ts, check_names=False)

def test_from_csv(self):
def test_from_csv(self, datetime_series, string_series):

with ensure_clean() as path:
self.ts.to_csv(path, header=False)
datetime_series.to_csv(path, header=False)
ts = self.read_csv(path)
assert_series_equal(self.ts, ts, check_names=False)
assert_series_equal(datetime_series, ts, check_names=False)

assert ts.name is None
assert ts.index.name is None
Expand All @@ -79,18 +77,18 @@ def test_from_csv(self):
assert_series_equal(depr_ts, ts)

# see gh-10483
self.ts.to_csv(path, header=True)
datetime_series.to_csv(path, header=True)
ts_h = self.read_csv(path, header=0)
assert ts_h.name == "ts"

self.series.to_csv(path, header=False)
string_series.to_csv(path, header=False)
series = self.read_csv(path)
assert_series_equal(self.series, series, check_names=False)
assert_series_equal(string_series, series, check_names=False)

assert series.name is None
assert series.index.name is None

self.series.to_csv(path, header=True)
string_series.to_csv(path, header=True)
series_h = self.read_csv(path, header=0)
assert series_h.name == "series"

Expand All @@ -106,19 +104,19 @@ def test_from_csv(self):
check_series = Series({"1998-01-01": 1.0, "1999-01-01": 2.0})
assert_series_equal(check_series, series)

def test_to_csv(self):
def test_to_csv(self, datetime_series):
import io

with ensure_clean() as path:
self.ts.to_csv(path, header=False)
datetime_series.to_csv(path, header=False)

with io.open(path, newline=None) as f:
lines = f.readlines()
assert (lines[1] != '\n')

self.ts.to_csv(path, index=False, header=False)
datetime_series.to_csv(path, index=False, header=False)
arr = np.loadtxt(path)
assert_almost_equal(arr, self.ts.values)
assert_almost_equal(arr, datetime_series.values)

def test_to_csv_unicode_index(self):
buf = StringIO()
Expand Down Expand Up @@ -196,22 +194,23 @@ def test_to_csv_compression(self, s, encoding, compression):
encoding=encoding))


class TestSeriesIO(TestData):
class TestSeriesIO():

def test_to_frame(self):
self.ts.name = None
rs = self.ts.to_frame()
xp = pd.DataFrame(self.ts.values, index=self.ts.index)
def test_to_frame(self, datetime_series):
datetime_series.name = None
rs = datetime_series.to_frame()
xp = pd.DataFrame(datetime_series.values, index=datetime_series.index)
assert_frame_equal(rs, xp)

self.ts.name = 'testname'
rs = self.ts.to_frame()
xp = pd.DataFrame(dict(testname=self.ts.values), index=self.ts.index)
datetime_series.name = 'testname'
rs = datetime_series.to_frame()
xp = pd.DataFrame(dict(testname=datetime_series.values),
index=datetime_series.index)
assert_frame_equal(rs, xp)

rs = self.ts.to_frame(name='testdifferent')
xp = pd.DataFrame(
dict(testdifferent=self.ts.values), index=self.ts.index)
rs = datetime_series.to_frame(name='testdifferent')
xp = pd.DataFrame(dict(testdifferent=datetime_series.values),
index=datetime_series.index)
assert_frame_equal(rs, xp)

def test_timeseries_periodindex(self):
Expand Down Expand Up @@ -256,11 +255,12 @@ class SubclassedFrame(DataFrame):
dict,
collections.defaultdict(list),
collections.OrderedDict))
def test_to_dict(self, mapping):
def test_to_dict(self, mapping, datetime_series):
# GH16122
ts = TestData().ts
tm.assert_series_equal(
Series(ts.to_dict(mapping), name='ts'), ts)
from_method = Series(ts.to_dict(collections.Counter))
from_constructor = Series(collections.Counter(ts.iteritems()))
Series(datetime_series.to_dict(mapping), name='ts'),
datetime_series)
from_method = Series(datetime_series.to_dict(collections.Counter))
from_constructor = Series(collections
.Counter(datetime_series.iteritems()))
tm.assert_series_equal(from_method, from_constructor)