83 lines
1.3 KiB
Go
83 lines
1.3 KiB
Go
package stack
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import (
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestNewStack(t *testing.T) {
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require.Equal(t, NewStack(), &Stack{
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size: 32,
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height: 0,
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data: make([]int, 32),
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next: nil,
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})
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}
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func TestClear(t *testing.T) {
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s := NewStack()
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s.Clear()
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require.Equal(t, s.height, 0)
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}
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func TestDupicate(t *testing.T) {
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s := NewStack()
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s2 := NewStack()
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s.Duplicate()
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require.Equal(t, s.height, s2.height)
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s.Push(12)
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s.Duplicate()
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s2.Push(12)
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s2.Push(12)
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require.Equal(t, s.height, s2.height)
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require.Equal(t, s.data, s2.data)
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}
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func TestPop(t *testing.T) {
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s := NewStack()
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v := s.Pop()
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require.Equal(t, v, 0)
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s.Push(12)
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s.Push(14)
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v = s.Pop()
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require.Equal(t, v, 14)
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v = s.Pop()
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require.Equal(t, v, 12)
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v = s.Pop()
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require.Equal(t, v, 0)
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}
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func TestPush(t *testing.T) {
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s := NewStack()
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for i := 0; i < 32; i++ {
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s.Push(i)
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}
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require.Equal(t, s.size, 32)
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s.Push(-1)
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require.Equal(t, s.size, 64)
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}
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func TestSwap(t *testing.T) {
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s := NewStack()
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s2 := NewStack()
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s.Swap()
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s2.Push(0)
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s2.Push(0)
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require.Equal(t, s, s2)
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s.Clear()
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s.Push(1)
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s.Swap()
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s2.Clear()
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s2.Push(1)
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s2.Push(0)
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require.Equal(t, s, s2)
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s.Clear()
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s.Push(1)
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s.Push(2)
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s2.Clear()
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s2.Push(2)
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s2.Push(1)
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s.Swap()
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require.Equal(t, s, s2)
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}
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