rpn/test/05-stack.txt

## STACK TEST
# entry depth 1
1
-> stack size should be 1

# entry depth 2
2 3
-> stack size should be 3
-> stack should be 1, 2, 3

# drop
drop
-> stack size should be 2

# drop2
drop2
-> stack size should be 0

# drop error
drop
-> error should be 2

# drop2 error
drop2
-> error should be 2

# drop2 error
1 drop2
-> error should be 2
drop

# test dup
1 dup
-> stack size should be 2
-> stack should be 1, 1

# test dup2
drop 2 dup2
-> stack size should be 4
-> stack should be 1, 2, 1, 2
drop2 drop2

# test rot
1 2 3 rot
-> stack size should be 3
-> stack should be 2, 3, 1
erase

# test depth
1 2 3
depth
-> stack size should be 4
-> stack should be 1, 2, 3, 3
erase

# test pick
1 2 3 4 2 pick
-> stack size should be 5
-> stack should be 1, 2, 3, 4, 3
0 pick
-> error should be 4
7 pick
-> error should be 4

# test erase
erase
-> stack size should be 0