Ensure UTF-8 when reading/writing files in tests

Author: abravalheri

tests/test_compile_to_code.py

@@ -116,7 +116,7 @@ def test_compile_to_code_custom_format_with_refs(tmp_path, monkeypatch):
     formats = {'my-format': str.isidentifier}
     code = compile_to_code(schema, formats=formats)
 
-    (tmp_path / "schema_4.py").write_text(code)
+    (tmp_path / "schema_4.py").write_text(code, encoding="utf-8")
     with monkeypatch.context() as m:
         m.syspath_prepend(tmp_path)
         from schema_4 import validate

tests/test_examples.py

@@ -30,16 +30,16 @@
 def test_validate(example_group):
     example_dir = EXAMPLES / example_group
     schema = next(example_dir.glob("*.schema.json"))
-    validator = compile(json.loads(schema.read_text()))
+    validator = compile(json.loads(schema.read_text(encoding="utf-8")))
     examples = (
-        (e, e.with_suffix(".error"), json.loads(e.read_text()))
+        (e, e.with_suffix(".error"), json.loads(e.read_text(encoding="utf-8")))
         for e in example_dir.glob("*.json")
         if not str(e).endswith(".schema.json")
     )
     for example_file, err_file, example in examples:
         if err_file.exists():
             with pytest.raises(JsonSchemaException) as exc_info:
                 validator(example)
-            assert err_file.read_text().strip() in str(exc_info.value).strip()
+            assert err_file.read_text(encoding="utf-8").strip() in str(exc_info.value).strip()
         else:
             validator(example)  # valid