add test for misc, thanks gpt

Author: DanielYang59

tests/util/test_misc.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+import numpy as np
+
+from pymatgen.util.misc import is_np_dict_equal
+
+
+class TestIsNpDictEqual:
+    def test_different_keys(self):
+        """Test two dicts with different keys."""
+        dict1 = {"a": np.array([1, 2, 3])}
+        dict2 = {"a": np.array([1, 2, 3]), "b": "hello"}
+        assert not is_np_dict_equal(dict1, dict2)
+
+    def test_both_list(self):
+        """Test two dicts where both have lists as values."""
+        dict1 = {"a": [1, 2, 3]}
+        dict2 = {"a": [1, 2, 3]}
+        assert is_np_dict_equal(dict1, dict2)
+
+    def test_both_np_array(self):
+        """Test two dicts where both have NumPy arrays as values."""
+        dict1 = {"a": np.array([1, 2, 3])}
+        dict2 = {"a": np.array([1, 2, 3])}
+        assert is_np_dict_equal(dict1, dict2)
+
+    def test_one_np_one_list(self):
+        """Test two dicts where one has a NumPy array and the other has a list."""
+        dict1 = {"a": np.array([1, 2, 3])}
+        dict2 = {"a": [1, 2, 3]}
+        assert is_np_dict_equal(dict1, dict2)
+
+    def test_nested_arrays(self):
+        """Test two dicts with deeper nested arrays."""
+        dict1 = {"a": np.array([[1, 2], [3, 4]])}
+        dict2 = {"a": np.array([[1, 2], [3, 4]])}
+        assert is_np_dict_equal(dict1, dict2)
+
+        dict3 = {"a": np.array([[1, 2], [3, 5]])}
+        assert not is_np_dict_equal(dict1, dict3)