Skip to content

[ArrowStringArray] TST: parametrize str.partition tests #41396

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
May 10, 2021
Merged

[ArrowStringArray] TST: parametrize str.partition tests #41396

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
176 changes: 92 additions & 84 deletions pandas/tests/strings/test_split_partition.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -335,90 +335,90 @@ def test_split_with_name():
tm.assert_index_equal(res, exp)


def test_partition_series():
def test_partition_series(any_string_dtype):
# https://github.com/pandas-dev/pandas/issues/23558

values = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None])
s = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None], dtype=any_string_dtype)

result = values.str.partition("_", expand=False)
exp = Series(
result = s.str.partition("_", expand=False)
expected = Series(
[("a", "_", "b_c"), ("c", "_", "d_e"), np.nan, ("f", "_", "g_h"), None]
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

result = values.str.rpartition("_", expand=False)
exp = Series(
result = s.str.rpartition("_", expand=False)
expected = Series(
[("a_b", "_", "c"), ("c_d", "_", "e"), np.nan, ("f_g", "_", "h"), None]
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

# more than one char
values = Series(["a__b__c", "c__d__e", np.nan, "f__g__h", None])
result = values.str.partition("__", expand=False)
exp = Series(
s = Series(["a__b__c", "c__d__e", np.nan, "f__g__h", None])
result = s.str.partition("__", expand=False)
expected = Series(
[
("a", "__", "b__c"),
("c", "__", "d__e"),
np.nan,
("f", "__", "g__h"),
None,
]
],
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

result = values.str.rpartition("__", expand=False)
exp = Series(
result = s.str.rpartition("__", expand=False)
expected = Series(
[
("a__b", "__", "c"),
("c__d", "__", "e"),
np.nan,
("f__g", "__", "h"),
None,
]
],
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

# None
values = Series(["a b c", "c d e", np.nan, "f g h", None])
result = values.str.partition(expand=False)
exp = Series(
s = Series(["a b c", "c d e", np.nan, "f g h", None], dtype=any_string_dtype)
result = s.str.partition(expand=False)
expected = Series(
[("a", " ", "b c"), ("c", " ", "d e"), np.nan, ("f", " ", "g h"), None]
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

result = values.str.rpartition(expand=False)
exp = Series(
result = s.str.rpartition(expand=False)
expected = Series(
[("a b", " ", "c"), ("c d", " ", "e"), np.nan, ("f g", " ", "h"), None]
)
tm.assert_series_equal(result, exp)
tm.assert_series_equal(result, expected)

# Not split
values = Series(["abc", "cde", np.nan, "fgh", None])
result = values.str.partition("_", expand=False)
exp = Series([("abc", "", ""), ("cde", "", ""), np.nan, ("fgh", "", ""), None])
tm.assert_series_equal(result, exp)
s = Series(["abc", "cde", np.nan, "fgh", None], dtype=any_string_dtype)
result = s.str.partition("_", expand=False)
expected = Series([("abc", "", ""), ("cde", "", ""), np.nan, ("fgh", "", ""), None])
tm.assert_series_equal(result, expected)

result = values.str.rpartition("_", expand=False)
exp = Series([("", "", "abc"), ("", "", "cde"), np.nan, ("", "", "fgh"), None])
tm.assert_series_equal(result, exp)
result = s.str.rpartition("_", expand=False)
expected = Series([("", "", "abc"), ("", "", "cde"), np.nan, ("", "", "fgh"), None])
tm.assert_series_equal(result, expected)

# unicode
values = Series(["a_b_c", "c_d_e", np.nan, "f_g_h"])
s = Series(["a_b_c", "c_d_e", np.nan, "f_g_h"], dtype=any_string_dtype)

result = values.str.partition("_", expand=False)
exp = Series([("a", "_", "b_c"), ("c", "_", "d_e"), np.nan, ("f", "_", "g_h")])
tm.assert_series_equal(result, exp)
result = s.str.partition("_", expand=False)
expected = Series([("a", "_", "b_c"), ("c", "_", "d_e"), np.nan, ("f", "_", "g_h")])
tm.assert_series_equal(result, expected)

result = values.str.rpartition("_", expand=False)
exp = Series([("a_b", "_", "c"), ("c_d", "_", "e"), np.nan, ("f_g", "_", "h")])
tm.assert_series_equal(result, exp)
result = s.str.rpartition("_", expand=False)
expected = Series([("a_b", "_", "c"), ("c_d", "_", "e"), np.nan, ("f_g", "_", "h")])
tm.assert_series_equal(result, expected)

# compare to standard lib
values = Series(["A_B_C", "B_C_D", "E_F_G", "EFGHEF"])
result = values.str.partition("_", expand=False).tolist()
assert result == [v.partition("_") for v in values]
result = values.str.rpartition("_", expand=False).tolist()
assert result == [v.rpartition("_") for v in values]
s = Series(["A_B_C", "B_C_D", "E_F_G", "EFGHEF"], dtype=any_string_dtype)
result = s.str.partition("_", expand=False).tolist()
assert result == [v.partition("_") for v in s]
result = s.str.rpartition("_", expand=False).tolist()
assert result == [v.rpartition("_") for v in s]


def test_partition_index():
Expand Down Expand Up @@ -475,88 +475,96 @@ def test_partition_index():
assert result.nlevels == 3


def test_partition_to_dataframe():
def test_partition_to_dataframe(any_string_dtype):
# https://github.com/pandas-dev/pandas/issues/23558

values = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None])
result = values.str.partition("_")
exp = DataFrame(
s = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None], dtype=any_string_dtype)
result = s.str.partition("_")
expected = DataFrame(
{
0: ["a", "c", np.nan, "f", None],
1: ["_", "_", np.nan, "_", None],
2: ["b_c", "d_e", np.nan, "g_h", None],
}
},
dtype=any_string_dtype,
)
tm.assert_frame_equal(result, exp)
tm.assert_frame_equal(result, expected)

result = values.str.rpartition("_")
exp = DataFrame(
result = s.str.rpartition("_")
expected = DataFrame(
{
0: ["a_b", "c_d", np.nan, "f_g", None],
1: ["_", "_", np.nan, "_", None],
2: ["c", "e", np.nan, "h", None],
}
},
dtype=any_string_dtype,
)
tm.assert_frame_equal(result, exp)
tm.assert_frame_equal(result, expected)

values = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None])
result = values.str.partition("_", expand=True)
exp = DataFrame(
s = Series(["a_b_c", "c_d_e", np.nan, "f_g_h", None], dtype=any_string_dtype)
result = s.str.partition("_", expand=True)
expected = DataFrame(
{
0: ["a", "c", np.nan, "f", None],
1: ["_", "_", np.nan, "_", None],
2: ["b_c", "d_e", np.nan, "g_h", None],
}
},
dtype=any_string_dtype,
)
tm.assert_frame_equal(result, exp)
tm.assert_frame_equal(result, expected)

result = values.str.rpartition("_", expand=True)
exp = DataFrame(
result = s.str.rpartition("_", expand=True)
expected = DataFrame(
{
0: ["a_b", "c_d", np.nan, "f_g", None],
1: ["_", "_", np.nan, "_", None],
2: ["c", "e", np.nan, "h", None],
}
},
dtype=any_string_dtype,
)
tm.assert_frame_equal(result, exp)
tm.assert_frame_equal(result, expected)


def test_partition_with_name():
def test_partition_with_name(any_string_dtype):
# GH 12617

s = Series(["a,b", "c,d"], name="xxx")
res = s.str.partition(",")
exp = DataFrame({0: ["a", "c"], 1: [",", ","], 2: ["b", "d"]})
tm.assert_frame_equal(res, exp)
s = Series(["a,b", "c,d"], name="xxx", dtype=any_string_dtype)
result = s.str.partition(",")
expected = DataFrame(
{0: ["a", "c"], 1: [",", ","], 2: ["b", "d"]}, dtype=any_string_dtype
)
tm.assert_frame_equal(result, expected)

# should preserve name
res = s.str.partition(",", expand=False)
exp = Series([("a", ",", "b"), ("c", ",", "d")], name="xxx")
tm.assert_series_equal(res, exp)
result = s.str.partition(",", expand=False)
expected = Series([("a", ",", "b"), ("c", ",", "d")], name="xxx")
tm.assert_series_equal(result, expected)


def test_partition_index_with_name():
idx = Index(["a,b", "c,d"], name="xxx")
res = idx.str.partition(",")
exp = MultiIndex.from_tuples([("a", ",", "b"), ("c", ",", "d")])
assert res.nlevels == 3
tm.assert_index_equal(res, exp)
result = idx.str.partition(",")
expected = MultiIndex.from_tuples([("a", ",", "b"), ("c", ",", "d")])
assert result.nlevels == 3
tm.assert_index_equal(result, expected)

# should preserve name
res = idx.str.partition(",", expand=False)
exp = Index(np.array([("a", ",", "b"), ("c", ",", "d")]), name="xxx")
assert res.nlevels == 1
tm.assert_index_equal(res, exp)
result = idx.str.partition(",", expand=False)
expected = Index(np.array([("a", ",", "b"), ("c", ",", "d")]), name="xxx")
assert result.nlevels == 1
tm.assert_index_equal(result, expected)


def test_partition_sep_kwarg():
def test_partition_sep_kwarg(any_string_dtype):
# GH 22676; depr kwarg "pat" in favor of "sep"
values = Series(["a_b_c", "c_d_e", np.nan, "f_g_h"])
s = Series(["a_b_c", "c_d_e", np.nan, "f_g_h"], dtype=any_string_dtype)

expected = values.str.partition(sep="_")
result = values.str.partition("_")
expected = s.str.partition(sep="_")
result = s.str.partition("_")
tm.assert_frame_equal(result, expected)

expected = values.str.rpartition(sep="_")
result = values.str.rpartition("_")
expected = s.str.rpartition(sep="_")
result = s.str.rpartition("_")
tm.assert_frame_equal(result, expected)


Expand Down