LCORE-2400: Unit tests for schema dumper

Author: tisnik

tests/unit/utils/test_schema_dumper.py

@@ -0,0 +1,102 @@
+"""Unit tests for utils/schema_dumper module."""
+
+from typing import Any
+
+from utils.schema_dumper import recursive_update
+
+
+def test_update_empty_input() -> None:
+    """Test how recursive_update function transforms empty input."""
+    original: dict[str, Any] = {}
+    expected: dict[str, Any] = {}
+
+    # perform the update
+    result = recursive_update(original)
+
+    # empty dict should be returned
+    assert result == expected
+
+    # ensure a new dict is returned, not the same object
+    assert result is not original
+
+
+def test_no_change_for_simple_schema() -> None:
+    """Test how recursive_update function trasforms simple non-empty input."""
+    original: dict[str, Any] = {
+        "type": "string",
+        "maxLength": 10,
+    }
+
+    # we need to distinguish between original and a copy
+    expected = original.copy()
+
+    # perform the update
+    result = recursive_update(original)
+
+    # non-empty dict with known content should be returned
+    assert result == expected
+
+    # ensure a new dict is returned, not the same object
+    assert result is not original
+
+
+def test_no_change_for_simple_object() -> None:
+    """Test how recursive_update function trasforms simple non-empty input."""
+    original: dict[str, Any] = {
+        "type": "object",
+        "properties": {
+            "name": {"type": "string"},
+            "age": {"type": "integer"},
+        },
+    }
+
+    # we need to distinguish between original and a copy
+    expected = original.copy()
+
+    # perform the update
+    result = recursive_update(original)
+
+    # non-empty dict with known content should be returned
+    assert result == expected
+
+    # ensure a new dict is returned, not the same object
+    assert result is not original
+
+
+def test_recursive_recurse_into_subdicts() -> None:
+    """Test the recursive_update on input containing sub-dictionaries."""
+    original = {
+        "type": "object",
+        "properties": {
+            "name": {"type": "string"},
+            "age": {"type": "integer", "exclusiveMinimum": 0},
+        },
+    }
+    expected = {
+        "type": "object",
+        "properties": {
+            "name": {"type": "string"},
+            "age": {"type": "integer", "minimum": 0},
+        },
+    }
+
+    # perform the update
+    result = recursive_update(original)
+
+    # non-empty dict with known content should be returned
+    assert result == expected
+
+    # ensure a new dict is returned, not the same object
+    assert result is not original
+
+
+def test_handles_none_values() -> None:
+    """None values should be preserved."""
+    original = {"key": None}
+    expected = original.copy()
+
+    # perform the update
+    result = recursive_update(original)
+
+    # non-empty dict with known content should be returned
+    assert result == expected