1 files changed, 30 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/numpy/core/tests/test_hashtable.py b/.venv/lib/python3.12/site-packages/numpy/core/tests/test_hashtable.py
new file mode 100644
index 00000000..bace4c05
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/numpy/core/tests/test_hashtable.py
@@ -0,0 +1,30 @@
+import pytest
+
+import random
+from numpy.core._multiarray_tests import identityhash_tester
+
+
+@pytest.mark.parametrize("key_length", [1, 3, 6])
+@pytest.mark.parametrize("length", [1, 16, 2000])
+def test_identity_hashtable(key_length, length):
+    # use a 30 object pool for everything (duplicates will happen)
+    pool = [object() for i in range(20)]
+    keys_vals = []
+    for i in range(length):
+        keys = tuple(random.choices(pool, k=key_length))
+        keys_vals.append((keys, random.choice(pool)))
+
+    dictionary = dict(keys_vals)
+
+    # add a random item at the end:
+    keys_vals.append(random.choice(keys_vals))
+    # the expected one could be different with duplicates:
+    expected = dictionary[keys_vals[-1][0]]
+
+    res = identityhash_tester(key_length, keys_vals, replace=True)
+    assert res is expected
+
+    # check that ensuring one duplicate definitely raises:
+    keys_vals.insert(0, keys_vals[-2])
+    with pytest.raises(RuntimeError):
+        identityhash_tester(key_length, keys_vals)