Add tests for jeb_utils.utils.get_next_lower_integer_multiple

tests/unit/utils/test_get_next_lower_integer_multiple.py

@@ -0,0 +1,46 @@
+from src.jeb_utils.utils import get_next_lower_integer_multiple
+import pytest
+
+@pytest.mark.parametrize('value,multiple,expected', [
+    (1, 1, 1),
+    (2, 1, 2),
+    (3, 1, 3),
+    (1, 2, 0),
+    (1, 2, 0),
+    (58, 42, 42),
+    (125, 42, 84),
+    (126, 42, 126),
+    (127, 42, 126),
+
+    (-1, -1, -1),
+    (-2, -1, -2),
+    (-3, -1, -3),
+    (-1, -2, 0),
+    (-1, -2, 0),
+    (-58, -42, -42),
+    (-125, -42, -84),
+    (-126, -42, -126),
+    (-127, -42, -126),
+
+    (-1, 1, -1),
+    (-2, 1, -2),
+    (-3, 1, -3),
+    (-1, 2, 0),
+    (-1, 2, 0),
+    (-58, 42, -42),
+    (-125, 42, -84),
+    (-126, 42, -126),
+    (-127, 42, -126),
+])
+def test_get_next_lower_integer_multiple(value, multiple, expected):
+    assert get_next_lower_integer_multiple(value, multiple) == expected
+
+@pytest.mark.parametrize('value,multiple,expected_exception', [
+    (1, 0, ZeroDivisionError),
+    (2, 0, ZeroDivisionError),
+    (0, 0, ZeroDivisionError),
+    (-1, 0, ZeroDivisionError),
+])
+def test_get_next_lower_integer_multiple(value, multiple, expected_exception):
+    with pytest.raises(expected_exception):
+        get_next_lower_integer_multiple(value, multiple)