From f0e36498ef0fba146a25dfdb0c7930c3f64556ce Mon Sep 17 00:00:00 2001
From: "Hart, Kenneth Arthur" <khart@gatech.edu>
Date: Mon, 21 Jan 2019 00:59:30 -0500
Subject: [PATCH] added test for overlap with empty tree

---
 tests/test_aabbtree.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/test_aabbtree.py b/tests/test_aabbtree.py
index 3d33bb3..3b12b71 100644
--- a/tests/test_aabbtree.py
+++ b/tests/test_aabbtree.py
@@ -115,6 +115,9 @@ def test_does_overlap():
     aabb6 = AABB([(0, 1), (5, 6)])
     aabb7 = AABB([(6.5, 6.5), (5.5, 5.5)])
 
+    for aabb in (aabb5, aabb6, aabb7):
+        assert not AAABBTree().does_overlap(aabb)
+
     aabbs = standard_aabbs()
     for indices in itertools.permutations(range(4)):
         tree = AABBTree()