[test utils] add walk method to CheckerTestCase

1 files changed, 7 insertions, 0 deletions

diff --git a/testutils.py b/testutils.py
index 69ffde57c..8d8064dd7 100644
--- a/testutils.py
+++ b/testutils.py
@@ -30,6 +30,7 @@ from cStringIO import StringIO
 from logilab.common import testlib
 
 from pylint import checkers
+from pylint.utils import PyLintASTWalker
 from pylint.reporters import BaseReporter
 from pylint.interfaces import IReporter
 from pylint.lint import PyLinter
@@ -201,6 +202,12 @@ class CheckerTestCase(testlib.TestCase):
                                             '\n'.join(repr(m) for m in got)))
         self.assertEqual(list(messages), got, msg)
 
+    def walk(self, node):
+        """recursive walk on the given node"""
+        walker = PyLintASTWalker(linter)
+        walker.add_checker(self.checker)
+        walker.walk(node)
+
 
 # Init
 test_reporter = TestReporter()