def test_moving_individual_points(poly: Polygon):
assume(len(poly.points) > 3)
poly.move_point(0, (25, 25))
assert poly.points[0] == (25, 25)
def test_polygon_closed_property(poly: Polygon):
# polygon has to have more points than to be closed
assume(len(poly.points) > 2)
assert poly.closed == (poly.points[0] == poly.points[-1])
# manually close it & test it worked
poly.append(poly.points[0])
assert poly.closed
def test_that_adding_point_close_by_closes(poly: Polygon):
assume(len(poly.points) > 3)
start_point = poly.points[0]
max_dist = poly.close_threshold
approximate_nearby = (start_point[0] + max_dist // 2, start_point[1])
poly.append(approximate_nearby)
assert poly.closed
def test_that_polygon_doesnt_close_if_only_two_points(poly: Polygon):
assume(len(poly.points) == 1)
start_point = poly.points[0]
max_dist = poly.close_threshold
approximate_nearby = (start_point[0] + max_dist // 2, start_point[1])
poly.append(approximate_nearby)
assert not poly.closed
def test_polygon_does_not_accept_other_shapes(box: BoundingBox, point: Point):
with pytest.raises(ValueError):
Polygon.from_data(box.data)
with pytest.raises(ValueError):
Polygon.from_data(point.data)
def test_polygon_round_trips(poly: Polygon):
assert poly == Polygon.from_data(poly.data)
def test_that_polygon_doesnt_close_if_only_two_points(poly: Polygon):
if len(poly.points) > 1:
poly.points = poly.points[:1]
start_point = poly.points[0]
max_dist = poly.close_threshold
approximate_nearby = (start_point[0] + max_dist // 2, start_point[1])
poly.append(approximate_nearby)
assert not poly.closed
@given(poly=infer)
@example(poly=Polygon())
def test_getting_xy_lists_works(poly: Polygon):
xlist, ylist = poly.xy_lists
assert all(x == xy[0] for x, xy in zip(xlist, poly.points))
assert all(y == xy[1] for y, xy in zip(ylist, poly.points))
@given(box=infer, point=infer)
def test_polygon_does_not_accept_other_shapes(box: BoundingBox, point: Point):
with pytest.raises(ValueError):
Polygon.from_data(box.data)
with pytest.raises(ValueError):
Polygon.from_data(point.data)
def polygons(draw):
points = strategies.lists(coordinates, min_size=3)
label = strategies.text()
return Polygon(draw(points), draw(label))