From 0b7c11553b3520ebc1bcf84969aba120436b0776 Mon Sep 17 00:00:00 2001
From: Olivier Desenfans <desenfans.olivier@gmail.com>
Date: Sat, 16 Jul 2022 12:34:46 +0200
Subject: [PATCH] testcheck: auto-discovery of .test files

Replaced the hardcoded list of test data files by an automatic
discovery system that uses a glob expression on `check-*.test`.

Fixes #8650.
---
 mypy/test/testcheck.py | 102 ++++++-----------------------------------
 1 file changed, 14 insertions(+), 88 deletions(-)

diff --git a/mypy/test/testcheck.py b/mypy/test/testcheck.py
index ddcb78df8100..492b6b0e402f 100644
--- a/mypy/test/testcheck.py
+++ b/mypy/test/testcheck.py
@@ -1,10 +1,10 @@
 """Type checker test cases"""
-
 import os
 import re
 import sys
 
 from typing import Dict, List, Set, Tuple
+from pathlib import Path
 
 from mypy import build
 from mypy.build import Graph
@@ -28,97 +28,23 @@
 
 import pytest
 
-# List of files that contain test case descriptions.
-typecheck_files = [
-    'check-basic.test',
-    'check-union-or-syntax.test',
-    'check-callable.test',
-    'check-classes.test',
-    'check-statements.test',
-    'check-generics.test',
-    'check-dynamic-typing.test',
-    'check-inference.test',
-    'check-inference-context.test',
-    'check-kwargs.test',
-    'check-overloading.test',
-    'check-type-checks.test',
-    'check-abstract.test',
-    'check-multiple-inheritance.test',
-    'check-super.test',
-    'check-modules.test',
-    'check-modules-fast.test',
-    'check-typevar-values.test',
-    'check-unsupported.test',
-    'check-unreachable-code.test',
-    'check-unions.test',
-    'check-isinstance.test',
-    'check-lists.test',
-    'check-namedtuple.test',
-    'check-narrowing.test',
-    'check-typeddict.test',
-    'check-type-aliases.test',
-    'check-ignore.test',
-    'check-type-promotion.test',
-    'check-semanal-error.test',
-    'check-flags.test',
-    'check-incremental.test',
-    'check-serialize.test',
-    'check-bound.test',
-    'check-optional.test',
-    'check-fastparse.test',
-    'check-warnings.test',
-    'check-async-await.test',
-    'check-newtype.test',
-    'check-class-namedtuple.test',
-    'check-selftype.test',
-    'check-python2.test',
-    'check-columns.test',
-    'check-functions.test',
-    'check-tuples.test',
-    'check-expressions.test',
-    'check-generic-subtyping.test',
-    'check-varargs.test',
-    'check-newsyntax.test',
-    'check-protocols.test',
-    'check-underscores.test',
-    'check-classvar.test',
-    'check-enum.test',
-    'check-incomplete-fixture.test',
-    'check-custom-plugin.test',
-    'check-default-plugin.test',
-    'check-attr.test',
-    'check-ctypes.test',
-    'check-dataclasses.test',
-    'check-final.test',
-    'check-redefine.test',
-    'check-literal.test',
-    'check-newsemanal.test',
-    'check-inline-config.test',
-    'check-reports.test',
-    'check-errorcodes.test',
-    'check-annotated.test',
-    'check-parameter-specification.test',
-    'check-typevar-tuple.test',
-    'check-generic-alias.test',
-    'check-typeguard.test',
-    'check-functools.test',
-    'check-singledispatch.test',
-    'check-slots.test',
-    'check-formatting.test',
-    'check-native-int.test',
-]
+# List files that contain test case descriptions.
+root_dir = Path(__file__).parent.parent.parent
+test_data_dir = root_dir / "test-data" / "unit"
+
+typecheck_files = [p.name for p in test_data_dir.glob("check-*.test")]
 
 # Tests that use Python 3.8-only AST features (like expression-scoped ignores):
-if sys.version_info >= (3, 8):
-    typecheck_files.append('check-python38.test')
-if sys.version_info >= (3, 9):
-    typecheck_files.append('check-python39.test')
-if sys.version_info >= (3, 10):
-    typecheck_files.append('check-python310.test')
+if sys.version_info < (3, 8):
+    typecheck_files.remove('check-python38.test')
+if sys.version_info < (3, 9):
+    typecheck_files.remove('check-python39.test')
+if sys.version_info < (3, 10):
+    typecheck_files.remove('check-python310.test')
 
 # Special tests for platforms with case-insensitive filesystems.
-if sys.platform in ('darwin', 'win32'):
-    typecheck_files.extend(['check-modules-case.test'])
+if sys.platform not in ('darwin', 'win32'):
+    typecheck_files.remove('check-modules-case.test')
 
 
 class TypeCheckSuite(DataSuite):