def test_approximate_lines():
path = Path()
path.line_to((1, 1))
path.line_to((2, 0))
vertices = list(path.approximate())
assert len(vertices) == 3
assert vertices[0] == path.start == (0, 0)
assert vertices[2] == path.end == (2, 0)
def test_approximate_curves():
path = Path()
path.curve3_to((2, 0), (1, 1))
path.curve4_to((3, 0), (2, 1), (3, 1))
vertices = list(path.approximate(20))
assert len(vertices) == 41
assert vertices[0] == (0, 0)
assert vertices[-1] == (3, 0)
def test_control_vertices(p1):
vertices = list(p1.control_vertices())
assert close_vectors(vertices, [(0, 0), (2, 0), (2, 1), (4, 1), (4, 0),
(5, -1), (6, 0)])
path = Path()
assert len(list(path.control_vertices())) == 0
assert list(path.control_vertices()) == list(path.approximate(2))
path = converter.from_vertices([(0, 0), (1, 0)])
assert len(list(path.control_vertices())) == 2
