Create a file for the global test linter

Author: Pierre-Sassoulas

pylint/testutils/global_test_linter.py

@@ -0,0 +1,20 @@
+# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
+
+
+from pylint import checkers
+from pylint.lint import PyLinter
+from pylint.testutils.reporter_for_tests import GenericTestReporter
+
+
+def create_test_linter():
+    test_reporter = GenericTestReporter()
+    linter_ = PyLinter()
+    linter_.set_reporter(test_reporter)
+    linter_.config.persistent = 0
+    checkers.initialize(linter_)
+    return linter_
+
+
+# Can't be renamed to a constant (easily), it breaks countless tests
+linter = create_test_linter()

pylint/testutils/utils.py

@@ -9,11 +9,9 @@
 from io import StringIO
 from os.path import basename, join, splitext
 
-from pylint import checkers
-from pylint.lint import PyLinter
 from pylint.testutils.constants import SYS_VERS_STR
+from pylint.testutils.global_test_linter import linter
 from pylint.testutils.output_line import Message
-from pylint.testutils.reporter_for_tests import GenericTestReporter
 from pylint.utils import ASTWalker
 
 
@@ -150,13 +148,5 @@ def walk(self, node):
         walker.walk(node)
 
 
-# Init
-test_reporter = GenericTestReporter()
-linter = PyLinter()
-linter.set_reporter(test_reporter)
-linter.config.persistent = 0
-checkers.initialize(linter)
-
-
 def _tokenize_str(code):
     return list(tokenize.generate_tokens(StringIO(code).readline))