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import unittest
include ../src/stack
suite "Stack":
test "Pop":
var empty = NewStack()
check empty[].Pop() == 0
var simple = NewStack()
simple.data[0] = 1
simple.data[1] = 5
simple.height = 2
check simple[].Pop() == 5
check simple[].Pop() == 1
check simple[].Pop() == 0
test "Push":
var s = NewStack()
check s.height == 0
check s.data[0] == 0
check s.data[1] == 0
check s.data[2] == 0
s[].Push(5)
check s.height == 1
check s.data[0] == 5
check s.data[1] == 0
check s.data[2] == 0
s[].Push(-2)
check s.height == 2
check s.data[0] == 5
check s.data[1] == -2
check s.data[2] == 0
for i in 0..30:
s[].Push(i)
check s.size == 64
test "PopVector":
var empty = NewStack()
check empty[].PopVector() == (0, 0)
check empty.height == 0
var some = NewStack()
some[].Push(2)
check some[].PopVector() == (0, 2)
check some.height == 0
var full = NewStack()
full[].Push(1)
full[].Push(2)
full[].Push(3)
check full[].PopVector() == (2, 3)
check full.height == 1
test "PushVector":
var s = NewStack()
check s.height == 0
check s.data[0] == 0
check s.data[1] == 0
check s.data[2] == 0
s[].PushVector((5, -3))
check s.height == 2
check s.data[0] == 5
check s.data[1] == -3
check s.data[2] == 0
for i in 0..15:
s[].PushVector((i, i+1))
check s.size == 64
test "Clear":
var empty: Stack
empty.Clear()
check empty.height == 0
var some = NewStack()
some[].Push(1)
some[].Push(2)
some[].Clear()
check some.height == 0
test "Duplicate":
var empty = NewStack()
empty[].Duplicate()
check empty.height == 2
check empty.data[0] == 0
check empty.data[1] == 0
var some = NewStack()
some[].Push(2)
some[].Push(-4)
some[].Duplicate()
check some.height == 3
check some.data[0] == 2
check some.data[1] == -4
check some.data[2] == -4
check some.data[3] == 0
test "Swap":
var empty = NewStack()
empty[].Swap()
check empty.height == 2
check empty.data[0] == 0
check empty.data[1] == 0
var some = NewStack()
some[].Push(2)
some[].Push(-4)
some[].Push(7)
some[].Swap()
check some.height == 3
check some.data[0] == 2
check some.data[1] == 7
check some.data[2] == -4
check some.data[3] == 0
test "Transfert":
var empty = NewStack()
var empty2 = NewStack()
empty[].Transfert(empty2[], 4)
check empty.height == 4
check empty2.height == 0
check empty.data[0] == 0
check empty.data[1] == 0
check empty.data[2] == 0
check empty.data[3] == 0
empty = NewStack()
var some = NewStack()
some[].Push(2)
empty[].Transfert(some[], 3)
check empty.height == 3
check some.height == 0
check empty.data[0] == 0
check empty.data[1] == 0
check empty.data[2] == 2
empty = NewStack()
var full = NewStack()
full[].Push(1)
full[].Push(2)
full[].Push(3)
empty[].Transfert(full[], 2)
check empty.height == 2
check full.height == 1
check full.data[0] == 1
check empty.data[0] == 2
check empty.data[1] == 3
test "Next":
var empty = NewStack()
check empty[].Next() == nil
var some = NewStack(next = empty)
check some[].Next() == empty
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