From 689922e4eee764f6652f9f75408cac014db51971 Mon Sep 17 00:00:00 2001
From: Kaivalya Rawal <kaivalyaraw@gmail.com>
Date: Sat, 11 Mar 2017 14:04:51 +0530
Subject: [PATCH 1/2] added tests for Direction

---
 tests/test_agents.py | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 tests/test_agents.py

diff --git a/tests/test_agents.py b/tests/test_agents.py
new file mode 100644
index 000000000..89ee3fcf3
--- /dev/null
+++ b/tests/test_agents.py
@@ -0,0 +1,40 @@
+from agents import Direction
+
+def test_move_forward():
+    d = Direction("up")
+    l1 = d.move_forward((0,0))
+    assert l1 == (0,-1)
+    d = Direction(Direction.R)
+    l1 = d.move_forward((0,0))
+    assert l1 == (1,0)
+    d = Direction(Direction.D)
+    l1 = d.move_forward((0,0))
+    assert l1 == (0,1)
+    d = Direction("left")
+    l1 = d.move_forward((0,0))
+    assert l1 == (-1,0)
+    l2 = d.move_forward((1,0))
+    assert l2 == (0,0)
+
+def test_add():
+    d = Direction(Direction.U)
+    l1 = d + "right"
+    l2 = d + "left"
+    assert l1.direction == Direction.R
+    assert l2.direction == Direction.L
+    d = Direction("right")
+    l1 = d.__add__(Direction.L)
+    l2 = d.__add__(Direction.R)
+    assert l1.direction == "up"
+    assert l2.direction == "down"
+    d = Direction("down")
+    l1 = d.__add__("right")
+    l2 = d.__add__("left")
+    assert l1.direction == Direction.L
+    assert l2.direction == Direction.R
+    d = Direction(Direction.L)
+    l1 = d + Direction.R
+    l2 = d + Direction.L
+    assert l1.direction == Direction.U
+    assert l2.direction == Direction.D #fixed
+

From 187f43797339557c3f18d9c810dcb3026a0955dd Mon Sep 17 00:00:00 2001
From: Kaivalya Rawal <kaivalyaraw@gmail.com>
Date: Sat, 11 Mar 2017 14:05:22 +0530
Subject: [PATCH 2/2] fixed Direction arithmetic error

---
 agents.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/agents.py b/agents.py
index a5bf376ca..adb3f9bbc 100644
--- a/agents.py
+++ b/agents.py
@@ -345,7 +345,7 @@ def __add__(self, heading):
         elif self.direction == self.L:
             return{
                 self.R: Direction(self.U),
-                self.L: Direction(self.L),
+                self.L: Direction(self.D),
             }.get(heading, None)
         elif self.direction == self.U:
             return{