def test_b_less_than_zero(self):
builder = Builder()
builder.b(-1)
assert builder._b == 0
def test_b_higher_than_one(self):
builder = Builder()
builder.b(1.5)
assert builder._b == 1
def test_b_within_range(self):
builder = Builder()
builder.b(0.5)
assert builder._b == 0.5