Improve debugging info from view_config decorator.

Grab a frame when instanciating view_config, rather than pulling info from
venusian's AttachInfo.  See discussion at
https://github.com/Pylons/pyramid/issues/3471

This fixes the build for Python 3.8.

1 files changed, 8 insertions, 4 deletions

diff --git a/tests/test_view.py b/tests/test_view.py
index de40df1d5..e182c28ad 100644
--- a/tests/test_view.py
+++ b/tests/test_view.py
@@ -507,7 +507,14 @@ class TestViewConfigDecorator(unittest.TestCase):
 
     def test_create_defaults(self):
         decorator = self._makeOne()
-        self.assertEqual(decorator.__dict__, {})
+        self.assertEqual(list(decorator.__dict__.keys()), ['_info'])
+
+    def test_create_info(self):
+        target = self._getTargetClass()
+        decorator = target()
+        info = decorator._info
+        self.assertEqual(info[2], 'test_create_info')
+        self.assertEqual(info[3], 'decorator = target()')
 
     def test_create_context_trumps_for(self):
         decorator = self._makeOne(context='123', for_='456')
@@ -560,7 +567,6 @@ class TestViewConfigDecorator(unittest.TestCase):
         self.assertEqual(len(settings[0]), 3)
         self.assertEqual(settings[0]['venusian'], venusian)
         self.assertEqual(settings[0]['view'], None)  # comes from call_venusian
-        self.assertEqual(settings[0]['_info'], 'codeinfo')
 
     def test_call_class(self):
         decorator = self._makeOne()
@@ -580,7 +586,6 @@ class TestViewConfigDecorator(unittest.TestCase):
         self.assertEqual(settings[0]['venusian'], venusian)
         self.assertEqual(settings[0]['view'], None)  # comes from call_venusian
         self.assertEqual(settings[0]['attr'], 'foo')
-        self.assertEqual(settings[0]['_info'], 'codeinfo')
 
     def test_call_class_attr_already_set(self):
         decorator = self._makeOne(attr='abc')
@@ -600,7 +605,6 @@ class TestViewConfigDecorator(unittest.TestCase):
         self.assertEqual(settings[0]['venusian'], venusian)
         self.assertEqual(settings[0]['view'], None)  # comes from call_venusian
         self.assertEqual(settings[0]['attr'], 'abc')
-        self.assertEqual(settings[0]['_info'], 'codeinfo')
 
     def test_stacking(self):
         decorator1 = self._makeOne(name='1')