def test_dividing_points():
"""Check Points dividing LineSegment."""
AB = LineSegment(Point(0, 0, 'A'), Point(5, 0, 'B'))
p = AB.dividing_points(n=4)
assert p == [
Point(Number('1.25'), 0, 'a1'),
Point(Number('2.5'), 0, 'a2'),
Point(Number('3.75'), 0, 'a3')
]
AB = LineSegment(Point(0, 0, 'A'), Point(0, 5, 'B'))
p = AB.dividing_points(n=4)
assert p == [
Point(0, Number('1.25'), 'a1'),
Point(0, Number('2.5'), 'a2'),
Point(0, Number('3.75'), 'a3')
]
AB = LineSegment(Point(0, 0, 'A'), Point(5, 5, 'B'))
p = AB.dividing_points(n=4)
assert p == [
Point(Number('1.25'), Number('1.25'), 'a1'),
Point(Number('2.5'), Number('2.5'), 'a2'),
Point(Number('3.75'), Number('3.75'), 'a3')
]
p = AB.dividing_points(n=1)
assert p == []
with pytest.raises(TypeError):
p = AB.dividing_points(n='4')
with pytest.raises(ValueError):
p = AB.dividing_points(n=0)
def test_dividing_points_errors(A, B):
"""Check LineSegment's instanciation exceptions."""
AB = LineSegment(Point(0, 0, 'A'), Point(5, 0, 'B'))
with pytest.raises(TypeError) as excinfo:
AB.dividing_points(n=7.5)
assert str(excinfo.value) == 'n must be an integer'