Add typing to some functions in testutils (#5573)

Author: DanielNoord

pylint/testutils/configuration_test.py

@@ -30,7 +30,7 @@
 def get_expected_or_default(
     tested_configuration_file: Union[str, Path],
     suffix: str,
-    default: ConfigurationValue,
+    default: str,
 ) -> str:
     """Return the expected value from the file if it exists, or the given default."""
     expected = default

pylint/testutils/functional/test_file.py

@@ -4,7 +4,7 @@
 import configparser
 import sys
 from os.path import basename, exists, join
-from typing import List, Tuple
+from typing import Callable, Dict, List, Tuple, Union
 
 
 def parse_python_version(ver_str: str) -> Tuple[int, ...]:
@@ -45,7 +45,7 @@ class TestFileOptions(TypedDict):
 class FunctionalTestFile:
     """A single functional test case file with options."""
 
-    _CONVERTERS = {
+    _CONVERTERS: Dict[str, Callable[[str], Union[Tuple[int, ...], List[str]]]] = {
         "min_pyver": parse_python_version,
         "max_pyver": parse_python_version,
         "min_pyver_end_position": parse_python_version,

pylint/testutils/get_test_info.py

@@ -3,11 +3,14 @@
 
 from glob import glob
 from os.path import basename, join, splitext
+from typing import List, Tuple
 
 from pylint.testutils.constants import SYS_VERS_STR
 
 
-def _get_tests_info(input_dir, msg_dir, prefix, suffix):
+def _get_tests_info(
+    input_dir: str, msg_dir: str, prefix: str, suffix: str
+) -> List[Tuple[str, str]]:
     """get python input examples and output messages
 
     We use following conventions for input files and messages: