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CI/TST: Make test_vector_resize more deterministic #46602

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Apr 3, 2022
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CI/TST: Make test_vector_resize more deterministic #46602

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15 changes: 4 additions & 11 deletions pandas/tests/libs/test_hashtable.py
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Original file line number Diff line number Diff line change
Expand Up @@ -246,24 +246,17 @@ def test_lookup_overflow(self, writable):
(ht.Float64HashTable, ht.Float64Vector, "float64", False),
(ht.Int64HashTable, ht.Int64Vector, "int64", False),
(ht.Int32HashTable, ht.Int32Vector, "int32", False),
pytest.param(
ht.UInt64HashTable,
ht.UInt64Vector,
"uint64",
False,
marks=pytest.mark.xfail(
reason="Sometimes doesn't raise.",
strict=False,
),
),
(ht.UInt64HashTable, ht.UInt64Vector, "uint64", False),
],
)
def test_vector_resize(
self, writable, htable, uniques, dtype, safely_resizes, nvals
):
# Test for memory errors after internal vector
# reallocations (GH 7157)
vals = np.array(np.random.randn(1000), dtype=dtype)
# Changed from using np.random.rand to range
# which could cause flaky CI failures when safely_resizes=False
vals = np.array(range(1000), dtype=dtype)

# GH 21688 ensures we can deal with read-only memory views
vals.setflags(write=writable)
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