Format and fix yaml_writer test.

Author: cpyle0819

aws_doc_sdk_examples_tools/lliam/entry_points/lliam_app.py

@@ -93,9 +93,7 @@ def dedupe_reservoir(
     """
     doc_gen_root = Path(iam_tributary_root)
     package_names = parse_package_names(packages)
-    cmd = commands.DedupeReservoir(
-        root=doc_gen_root, packages=package_names
-    )
+    cmd = commands.DedupeReservoir(root=doc_gen_root, packages=package_names)
     errors = messagebus.handle(cmd)
     handle_domain_errors(errors)
 

aws_doc_sdk_examples_tools/yaml_writer.py

@@ -1,7 +1,6 @@
 from argparse import ArgumentParser
 from collections import defaultdict
 from dataclasses import asdict
-from difflib import unified_diff
 from pathlib import Path
 from typing import Any, DefaultDict, Dict, List, Tuple
 
@@ -146,7 +145,7 @@ def report_yaml_differences(
             elif file_path not in after_values:
                 differences.append((file_path, "removed"))
             else:
-                diff = unified_diff(before, after)
+                diff = f"{before}\n\n---\n\n{after}"
                 differences.append((file_path, diff))
 
     return differences

aws_doc_sdk_examples_tools/yaml_writer_test.py

@@ -72,12 +72,11 @@ def test_report_yaml_differences_with_changes():
     differences.sort()
 
     expected = [
-        ("file1.yaml", "modified"),
+        ("file1.yaml", "{'key1': 'value1'}\n\n---\n\n{'key1': 'changed_value'}"),
         ("file2.yaml", "removed"),
         ("file4.yaml", "added"),
     ]
     expected.sort()
-
     assert differences == expected