From dc90c9108fd8cc65bc76da7a6d71b6ed66c40256 Mon Sep 17 00:00:00 2001
From: turturica <Ionut Turturica>
Date: Fri, 20 Apr 2018 17:15:09 -0700
Subject: [PATCH] Collapse all parent nested package fixtures when pointing to
 a sub-node. Example: Given this hierarchy: p1.s1.s2.s3 I want to run pytest
 p1/s1/s2/s3/foo.py

If there are any package fixtures defined at p1..s2 levels, they should also be executed.
---
 _pytest/fixtures.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/_pytest/fixtures.py b/_pytest/fixtures.py
index e4bb91514..e9d032f92 100644
--- a/_pytest/fixtures.py
+++ b/_pytest/fixtures.py
@@ -75,10 +75,11 @@ def get_scope_package(node, fixturedef):
     cls = node.Package
     current = node
     fixture_package_name = os.path.join(fixturedef.baseid, '__init__.py')
-    while current and type(current) is not cls or \
-            fixture_package_name != current.nodeid:
+    while current and (type(current) is not cls or \
+            fixture_package_name != current.nodeid):
         current = current.parent
-    assert current
+    if current is None:
+        return node.session
     return current