FM / integer

/usr/local/lib64/python3.6/site-packages/pandas/tests/arrays/integer/

/usr/local/lib64/python3.6/site-packages/pandas/tests/arrays/integer

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
conftest.py	1043	0644	edit dl rm
test_arithmetic.py	9436	0644	edit dl rm
test_comparison.py	4005	0644	edit dl rm
test_concat.py	2263	0644	edit dl rm
test_construction.py	6301	0644	edit dl rm
test_dtypes.py	8769	0644	edit dl rm
test_function.py	4788	0644	edit dl rm
test_indexing.py	498	0644	edit dl rm
test_repr.py	1708	0644	edit dl rm
__init__.py	0	0644	edit dl rm

Edit: /usr/local/lib64/python3.6/site-packages/pandas/tests/arrays/integer/test_concat.py (2263B)

import numpy as np
import pytest

import pandas as pd
import pandas._testing as tm

@pytest.mark.parametrize(
    "to_concat_dtypes, result_dtype",
    [
        (["Int64", "Int64"], "Int64"),
        (["UInt64", "UInt64"], "UInt64"),
        (["Int8", "Int8"], "Int8"),
        (["Int8", "Int16"], "Int16"),
        (["UInt8", "Int8"], "Int16"),
        (["Int32", "UInt32"], "Int64"),
        # this still gives object (awaiting float extension dtype)
        (["Int64", "UInt64"], "object"),
        (["Int64", "boolean"], "Int64"),
        (["UInt8", "boolean"], "UInt8"),
    ],
)
def test_concat_series(to_concat_dtypes, result_dtype):

result = pd.concat([pd.Series([0, 1, pd.NA], dtype=t) for t in to_concat_dtypes])
    expected = pd.concat([pd.Series([0, 1, pd.NA], dtype=object)] * 2).astype(
        result_dtype
    )
    tm.assert_series_equal(result, expected)

# order doesn't matter for result
    result = pd.concat(
        [pd.Series([0, 1, pd.NA], dtype=t) for t in to_concat_dtypes[::-1]]
    )
    expected = pd.concat([pd.Series([0, 1, pd.NA], dtype=object)] * 2).astype(
        result_dtype
    )
    tm.assert_series_equal(result, expected)

@pytest.mark.parametrize(
    "to_concat_dtypes, result_dtype",
    [
        (["Int64", "int64"], "Int64"),
        (["UInt64", "uint64"], "UInt64"),
        (["Int8", "int8"], "Int8"),
        (["Int8", "int16"], "Int16"),
        (["UInt8", "int8"], "Int16"),
        (["Int32", "uint32"], "Int64"),
        # this still gives object (awaiting float extension dtype)
        (["Int64", "uint64"], "object"),
        (["Int64", "bool"], "Int64"),
        (["UInt8", "bool"], "UInt8"),
    ],
)
def test_concat_series_with_numpy(to_concat_dtypes, result_dtype):

s1 = pd.Series([0, 1, pd.NA], dtype=to_concat_dtypes[0])
    s2 = pd.Series(np.array([0, 1], dtype=to_concat_dtypes[1]))
    result = pd.concat([s1, s2], ignore_index=True)
    expected = pd.Series([0, 1, pd.NA, 0, 1], dtype=object).astype(result_dtype)
    tm.assert_series_equal(result, expected)

# order doesn't matter for result
    result = pd.concat([s2, s1], ignore_index=True)
    expected = pd.Series([0, 1, 0, 1, pd.NA], dtype=object).astype(result_dtype)
    tm.assert_series_equal(result, expected)

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