fix: specify utf-8 encoding in benchmark read_text for Windows CI

Windows defaults to cp1252 which can't decode some source file bytes.

Author: KRRT7

tests/benchmarks/test_benchmark_libcst_multi_file.py

@@ -50,7 +50,7 @@ def _discover_all() -> None:
     """Run discover_functions on all source files."""
     ps = PythonSupport()
     for file_path in _SOURCE_FILES:
-        source = file_path.read_text()
+        source = file_path.read_text(encoding="utf-8")
         ps.discover_functions(source=source, file_path=file_path)
 
 

tests/benchmarks/test_benchmark_libcst_pipeline.py

@@ -27,8 +27,8 @@
 
 def _run_pipeline() -> None:
     """Simulate a single-file optimization pass through the full visitor pipeline."""
-    source = _TARGET_FILE.read_text()
-    source2 = _SECOND_FILE.read_text()
+    source = _TARGET_FILE.read_text(encoding="utf-8")
+    source2 = _SECOND_FILE.read_text(encoding="utf-8")
 
     # 1. Discover functions (FunctionVisitor + MetadataWrapper)
     ps = PythonSupport()