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stack_test.go
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stack_test.go
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package splaytree
import "testing"
func TestStack(t *testing.T) {
stack := newStack()
if stack == nil {
t.Errorf("newStack nil")
}
if stack.length() != 0 {
t.Errorf("newStack length !0")
}
if stack.empty() != true {
t.Errorf("newStack empty !1")
}
head := &node{}
stack.push(head)
if stack.length() != 1 {
t.Errorf("newStack length !1")
}
if stack.empty() != false {
t.Errorf("newStack empty !0")
}
if stack.tos() != head {
t.Errorf("newStack tos !head")
}
tail := &node{}
stack.push(tail)
if stack.length() != 2 {
t.Errorf("newStack length !2")
}
if stack.empty() != false {
t.Errorf("newStack empty !0")
}
if stack.tos() != tail {
t.Errorf("newStack tos !tail")
}
if stack.pop() != tail {
t.Errorf("newStack pop !tail")
}
if stack.length() != 1 {
t.Errorf("newStack length !1")
}
if stack.empty() != false {
t.Errorf("newStack empty !0")
}
if stack.tos() != head {
t.Errorf("newStack tos !head")
}
if stack.pop() != head {
t.Errorf("newStack pop !head")
}
if stack.length() != 0 {
t.Errorf("newStack length !0")
}
if stack.empty() != true {
t.Errorf("newStack empty !2")
}
}