add conftest.py that mocks out tg context

conftest.py

@@ -0,0 +1,24 @@
+import pytest
+
+# should get rid of this once this issue is fixed https://github.com/TurboGears/tg2/issues/136
+@pytest.fixture(autouse=True, scope='session')
+def tg_context_patch():
+    from tg import (
+        request as r,
+        tmpl_context as c,
+        app_globals as g,
+        cache,
+        response,
+        translator,
+        url,
+        config,
+    )
+    r.__dict__['_is_coroutine'] = False
+    c.__dict__['_is_coroutine'] = False
+    g.__dict__['_is_coroutine'] = False
+    cache.__dict__['_is_coroutine'] = False
+    response.__dict__['_is_coroutine'] = False
+    translator.__dict__['_is_coroutine'] = False
+    url.__dict__['_is_coroutine'] = False
+    config.__dict__['_is_coroutine'] = False
+