NRL-1215 Add tests for duplicates of each field in DocumentReference

Author: axelkrastek1-nhs

layer/nrlf/core/tests/test_json_duplicate_checker_nrlf.py

@@ -0,0 +1,55 @@
+import json
+import pytest
+from json_duplicate_checker import check_duplicate_keys
+from layer.nrlf.tests.data import load_document_reference_data
+
+
+def get_all_fields_from_json(json_str):
+    def extract_fields(data, parent_key=''):
+        fields = []
+        if isinstance(data, dict):
+            for k, v in data.items():
+                full_key = f"{parent_key}.{k}" if parent_key else k
+                fields.append(full_key)
+                fields.extend(extract_fields(v, full_key))
+        elif isinstance(data, list):
+            for i, item in enumerate(data):
+                full_key = f"{parent_key}[{i}]"
+                fields.extend(extract_fields(item, full_key))
+        return fields
+
+    data = json.loads(json_str)
+    return extract_fields(data)
+
+def duplicate_field_in_json(json_str, field_path):
+    data = json.loads(json_str)
+    path = field_path.replace(']', '').replace('[', '.').split('.')
+    current = data
+    for key in path[:-1]:
+        current = current[int(key) if key.isdigit() else key]
+    field = path[-1]
+
+    if field in current:
+        duplicate_field = f"{field}_duplicate"
+        current[duplicate_field] = current[field]
+        modified_json_str = json.dumps(data)
+        # Replace the duplicate field name with the original field name to simulate duplication
+        duplicated_json_str = modified_json_str.replace(f'"{duplicate_field}":', f'"{field}":', 1)
+        return duplicated_json_str
+    return json_str
+
+def load_document_reference_data_with_all_fields():
+    docref_body = load_document_reference_data("Y05868-736253002-Valid")
+    return get_all_fields_from_json(docref_body)
+
+@pytest.mark.parametrize("field", load_document_reference_data_with_all_fields())
+def test_parse_body_valid_docref_with_duplicate_keys(field):    
+    docref_body = load_document_reference_data("Y05868-736253002-Valid")
+
+    docref_body = duplicate_field_in_json(docref_body, field)
+
+    result = check_duplicate_keys(docref_body)
+
+    node = field.split(".")[-1]
+    assert result[0] == [node]
+    assert result[1] == [f"root.{field}"]