fix vertex

tests/test_geom2d.py

@@ -0,0 +1,22 @@
+"""Test of geom2d module.
+
+"""
+import numpy as np
+import fvr.geom2d
+
+def test_vertex_obj():
+  np.testing.assert_equal(
+    fvr.geom2d.Vertex(1, 2), np.array([1, 2, 1]),
+    'incorrect object after creation')
+
+def test_vertex_x():
+  np.testing.assert_equal(
+    fvr.geom2d.Vertex(1, 2).x, 1, 'incorrect x after creation')
+
+def test_vertex_y():
+  np.testing.assert_equal(
+    fvr.geom2d.Vertex(1, 2).y, 2, 'incorrect y after creation')
+
+def test_vertex_w():
+  np.testing.assert_equal(
+    fvr.geom2d.Vertex(1, 2).w, 1, 'incorrect w after creation')