test(surface): started test module for surfaces

tests/test_surface.py

@@ -0,0 +1,24 @@
+import pytest
+from hypervehicle.geometry.vector import Vector3
+from hypervehicle.geometry.surface import CoonsPatch
+
+
+def test_coons_patch():
+    # Test instantiation by corners
+    p00 = Vector3(0, 0, 0)
+    p10 = Vector3(1, 0, 0)
+    p01 = Vector3(0, 1, 0)
+    p11 = Vector3(1, 1, 0)
+    patch = CoonsPatch(p00=p00, p10=p10, p11=p11, p01=p01)
+
+    assert patch.defined_by_corners == True
+
+    # TODO - Test instantiation by edges
+
+    # Test instantiation by mix of corners and edges
+    with pytest.raises(Exception) as e_info:
+        CoonsPatch()
+
+    # Test interpolation
+    assert patch(0, 0) == p00
+    assert patch(1, 1) == p11