From: Łukasz Langa <lukasz@langa.pl>
Date: Tue, 14 Apr 2015 06:12:42 +0000 (-0700)
Subject: Issue #23310: Fix MagicMock's initializer to work with __methods__.
X-Git-Tag: v3.5.0a4~65
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a468db9b0bd8d17575923b91db5fbc4a222d4252;p=thirdparty%2FPython%2Fcpython.git

Issue #23310: Fix MagicMock's initializer to work with __methods__.
Behavior equivalent to m.configure_mock().  Patch by Kasia Jachim.
---

diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index 6a0fd5035883..c3ab4e82e897 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -1789,14 +1789,15 @@ def _set_return_value(mock, method, name):
 
 class MagicMixin(object):
     def __init__(self, *args, **kw):
+        self._mock_set_magics()  # make magic work for kwargs in init
         _safe_super(MagicMixin, self).__init__(*args, **kw)
-        self._mock_set_magics()
+        self._mock_set_magics()  # fix magic broken by upper level init
 
 
     def _mock_set_magics(self):
         these_magics = _magics
 
-        if self._mock_methods is not None:
+        if getattr(self, "_mock_methods", None) is not None:
             these_magics = _magics.intersection(self._mock_methods)
 
             remove_magics = set()
diff --git a/Lib/unittest/test/testmock/testmagicmethods.py b/Lib/unittest/test/testmock/testmagicmethods.py
index 3c53ec4f0e12..bb9b956bb2e4 100644
--- a/Lib/unittest/test/testmock/testmagicmethods.py
+++ b/Lib/unittest/test/testmock/testmagicmethods.py
@@ -450,5 +450,20 @@ class TestMockingMagicMethods(unittest.TestCase):
         bar_direct = m.__rdivmod__(2)
         self.assertIsInstance(bar_direct, MagicMock)
 
+    # http://bugs.python.org/issue23310
+    # Check if you can change behaviour of magic methds in MagicMock init
+    def test_magic_in_initialization(self):
+        m = MagicMock(**{'__str__.return_value': "12"})
+        self.assertEqual(str(m), "12")
+
+    def test_changing_magic_set_in_initialization(self):
+        m = MagicMock(**{'__str__.return_value': "12"})
+        m.__str__.return_value = "13"
+        self.assertEqual(str(m), "13")
+        m = MagicMock(**{'__str__.return_value': "12"})
+        m.configure_mock(**{'__str__.return_value': "14"})
+        self.assertEqual(str(m), "14")
+
+
 if __name__ == '__main__':
     unittest.main()
diff --git a/Misc/ACKS b/Misc/ACKS
index 48d20ef0c337..2a5236e9e5fa 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -849,6 +849,7 @@ Hugo Lopes Tavares
 Anne Lord
 Tom Loredo
 Justin Love
+Kasia Jachim
 Ned Jackson Lovely
 Chalmer Lowe
 Jason Lowe
diff --git a/Misc/NEWS b/Misc/NEWS
index 969da2cc9200..4a9dad8e32d0 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -136,6 +136,9 @@ Library
 - Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus
   infinity (-inf) instead of rounding towards zero.
 
+- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
+  like configure_mock().  Patch by Kasia Jachim.
+
 Build
 -----