51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
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/*
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* @Author : huangzj
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* @Time : 2020/12/30 14:08
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* @Description：map和切片的比较方法
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*/
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package go_cmp
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import (
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"fmt"
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"github.com/google/go-cmp/cmp"
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"github.com/google/go-cmp/cmp/cmpopts"
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"testing"
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)
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func TestNilEqualEmpty(t *testing.T) {
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var s1 []int
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var s2 = make([]int, 0)
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var m1 map[int]int
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var m2 = make(map[int]int)
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//Go原生的" == "符号是没办法比较 切片和map的.
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//fmt.Println(s1 == s2)
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//fmt.Println(m1 == m2)
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//这边可以通过Equal来比较 切片和map
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fmt.Println("s1 equals s2?", cmp.Equal(s1, s2))
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fmt.Println("m1 equals m2?", cmp.Equal(m1, m2))
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//空的切片和nil如果要比较相等，需要加上对应的参数
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fmt.Println("s1 equals s2 with option?", cmp.Equal(s1, s2, cmpopts.EquateEmpty()))
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fmt.Println("m1 equals m2 with option?", cmp.Equal(m1, m2, cmpopts.EquateEmpty()))
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}
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//比较无序的切片，和本来就没有顺序的map
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func TestSliceOutOfOrder(t *testing.T) {
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s1 := []int{1, 2, 3, 4}
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s2 := []int{4, 3, 2, 1}
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fmt.Println("s1 equals s2?", cmp.Equal(s1, s2))
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fmt.Println("s1 equals s2 with option?", cmp.Equal(s1, s2, cmpopts.SortSlices(func(i, j int) bool { return i < j })))
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fmt.Println()
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m1 := map[int]int{1: 10, 2: 20, 3: 30}
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m2 := map[int]int{1: 10, 2: 20, 3: 30}
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fmt.Println("m1 equals m2?", cmp.Equal(m1, m2))
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fmt.Println("m1 equals m2 with option?", cmp.Equal(m1, m2, cmpopts.SortMaps(func(i, j int) bool { return i < j })))
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}
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