Added singeploint helper tests

tests/test_singlepoint_helper.py

@@ -0,0 +1,40 @@
+"""Tests for singlepoint calculation helper functions."""
+
+from __future__ import annotations
+
+import numpy as np
+
+from api.utils.singlepoint_helper import convert_ndarray_to_list
+
+
+def test_convert_ndarray_to_list_with_array():
+    """Test convert_ndarray_to_list function with a np array."""
+    array = np.array([1, 2, 3])
+    result = convert_ndarray_to_list(array)
+    assert result == [1, 2, 3]
+
+
+def test_convert_ndarray_to_list_with_nested_dict():
+    """Test convert_ndarray_to_list function with a nested dict."""
+    import numpy as np
+
+    nested_dict = {"a": np.array([1, 2, 3]), "b": {"c": np.array([4, 5, 6])}}
+    result = convert_ndarray_to_list(nested_dict)
+    expected = {"a": [1, 2, 3], "b": {"c": [4, 5, 6]}}
+    assert result == expected
+
+
+def test_convert_ndarray_to_list_with_list():
+    """Test convert_ndarray_to_list function with list of np arrays."""
+    import numpy as np
+
+    list_of_arrays = [np.array([1, 2]), np.array([3, 4])]
+    result = convert_ndarray_to_list(list_of_arrays)
+    assert result == [[1, 2], [3, 4]]
+
+
+def test_convert_ndarray_to_list_with_non_numpy():
+    """Test convert_ndarray_to_list function with a float value."""
+    obj = -843.033131230741
+    result = convert_ndarray_to_list(obj)
+    assert result == -843.033131230741