diff --git a/test/test_direction.py b/test/test_direction.py
index 00c5a19..a084162 100644
--- a/test/test_direction.py
+++ b/test/test_direction.py
@@ -20,3 +20,11 @@ def test_compass_points_2():
 def test_compass_points_3():
     assert np.allclose(
         parse_vector("SSW"), np.array([-0.38268343, 0.92387953]))
+
+
+def test_wrong():
+    assert not parse_vector("O")
+
+
+def test_degree():
+    assert np.allclose(parse_vector("90"), np.array([1, 0]))