Collecting errors in array and providing to user if needed

Author: sujata-m

src/python_lib_osw_validation/__init__.py

@@ -10,7 +10,7 @@ def __init__(self, schema_dir: str):
         self.schema_dir = schema_dir
         self.schema = self.load_osw_schema(Path(self.schema_dir, 'opensidewalks.schema.json'))
         self.region_id = 'wa.microsoft'
-        self.errors = None
+        self.errors = []
 
     def load_osw_schema(self, schema_path: str) -> Dict[str, Any]:
         """Load OSW Schema"""
@@ -33,12 +33,12 @@ def validate_osw_errors(self, geojson_data: Dict[str, Any]) -> bool:
         for error in errors:
             error_count += 1
             # Format and store in file for further review
-            self.errors = error
+            self.errors.append(error)
 
         return error_count == 0
 
     def validate(self) -> None:
-        self.errors = None
+        self.errors = []
         # Validate edges
         is_valid = self.validate_osw_errors(
             self.load_osw_file(Path(self.schema_dir, f"{self.region_id}.graph.edges.OSW.geojson")))