From 78b0f78e8100bbcfd15f4e4168e5caba8a6d3edf Mon Sep 17 00:00:00 2001
From: Nicolas Braud-Santoni <nicolas@braud-santoni.eu>
Date: Fri, 12 Oct 2018 22:18:49 -0400
Subject: [PATCH] test_reflect_prop: Add a property tying reflect() and angle()

---
 tests/test_vector2_reflect.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/test_vector2_reflect.py b/tests/test_vector2_reflect.py
index c0a62ca2..cb0f3e01 100644
--- a/tests/test_vector2_reflect.py
+++ b/tests/test_vector2_reflect.py
@@ -2,7 +2,7 @@
 import pytest
 from hypothesis import given, assume, note
 from math import isclose, isinf
-from utils import units, vectors
+from utils import angle_isclose, units, vectors
 
 
 reflect_data = (
@@ -28,3 +28,6 @@ def test_reflect_prop(initial: Vector2, normal: Vector2):
     assert not any(map(isinf, reflected))
     assert initial.isclose(returned)
     assert isclose((initial * normal), -(reflected * normal))
+    assert angle_isclose(normal.angle(initial),
+                         180 - normal.angle(reflected)
+    )