def test_SeqExpr():
s = SeqExpr((1, n, y), (x, 0, 10))
assert isinstance(s, SeqExpr)
assert s.gen == (1, n, y)
assert s.interval == Interval(0, 10)
assert s.start == 0
assert s.stop == 10
assert s.length == 11
assert s.variables == (x,)
assert SeqExpr((1, 2, 3), (x, 0, oo)).length is oo
def test_SeqExpr():
#SeqExpr is a baseclass and does not take care of
#ensuring all arguments are Basics hence the use of
#Tuple(...) here.
s = SeqExpr(Tuple(1, n, y), Tuple(x, 0, 10))
assert isinstance(s, SeqExpr)
assert s.gen == (1, n, y)
assert s.interval == Interval(0, 10)
assert s.start == 0
assert s.stop == 10
assert s.length == 11
assert s.variables == (x, )
assert SeqExpr(Tuple(1, 2, 3), Tuple(x, 0, oo)).length is oo