From 13781201f2ec1e744f81f9643566e3de076fbb5f Mon Sep 17 00:00:00 2001
From: Xtreak <tir.karthi@gmail.com>
Date: Sat, 15 Jun 2019 21:49:15 +0530
Subject: [PATCH 1/2] MagicMock with function as spec supplied to mock.patch
 should return MagicMock

---
 Lib/unittest/mock.py                    | 3 ++-
 Lib/unittest/test/testmock/testasync.py | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index c2802726d75d9c..091fd9890429d7 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -46,7 +46,8 @@
 _safe_super = super
 
 def _is_async_obj(obj):
-    if getattr(obj, '__code__', None):
+    code = getattr(obj, '__code__', None)
+    if isinstance(code, CodeType):
         return asyncio.iscoroutinefunction(obj) or inspect.isawaitable(obj)
     else:
         return False
diff --git a/Lib/unittest/test/testmock/testasync.py b/Lib/unittest/test/testmock/testasync.py
index fa906e4f7152f8..5fb084e6603f17 100644
--- a/Lib/unittest/test/testmock/testasync.py
+++ b/Lib/unittest/test/testmock/testasync.py
@@ -321,6 +321,13 @@ def test_is_child_AsyncMock(self):
         self.assertIsInstance(mock.normal_method, MagicMock)
         self.assertIsInstance(mock, MagicMock)
 
+    def test_magicmock_lambda_spec(self):
+        mock_obj = MagicMock()
+        mock_obj.mock_func = MagicMock(spec=lambda x: x)
+
+        with patch.object(mock_obj, "mock_func") as cm:
+            self.assertIsInstance(cm, MagicMock)
+
 
 class AsyncArguments(unittest.TestCase):
     def test_add_return_value(self):

From 54537f47f920688df204b4b76c02976ba6bf9b0e Mon Sep 17 00:00:00 2001
From: Xtreak <tir.karthi@gmail.com>
Date: Sat, 15 Jun 2019 21:52:36 +0530
Subject: [PATCH 2/2] Add NEWS entry

---
 .../next/Library/2019-06-15-21-52-23.bpo-37251.dYzQt6.rst      | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2019-06-15-21-52-23.bpo-37251.dYzQt6.rst

diff --git a/Misc/NEWS.d/next/Library/2019-06-15-21-52-23.bpo-37251.dYzQt6.rst b/Misc/NEWS.d/next/Library/2019-06-15-21-52-23.bpo-37251.dYzQt6.rst
new file mode 100644
index 00000000000000..545591564b8c81
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-06-15-21-52-23.bpo-37251.dYzQt6.rst
@@ -0,0 +1,3 @@
+:class:`unittest.mock.MagicMock` with function as spec used as a spec to
+:func:`unittest.mock.patch` should return a
+:class:`unittest.mock.MagicMock`. Patch by Karthikeyan Singaravelan.