reference to golang data structure
import "unsafe"
func Str2Bytes(s string) []byte {
x := (*[2]uintptr)(unsafe.Pointer(&s))
h := [3]uintptr{x[0], x[1], x[1]}
return *(*[]byte)(unsafe.Pointer(&h))
}
func Bytes2Str(b []byte) string {
return *(*string)(unsafe.Pointer(&b))
}
the tests
import (
"math/rand"
"reflect"
"testing"
)
func TestStr2Bytes(t *testing.T) {
strSample := []string{
"你",
"好",
"世",
"界",
"語",
"言",
"變",
"化",
"hello",
"world",
"language",
"change",
}
type args struct {
s string
}
tests := []struct {
name string
args args
want []byte
}{
{
name: "abb",
args: args{
s: "abb",
},
want: []byte{'a', 'b', 'b'},
},
}
for i := 0; i < 100; i++ {
name := ""
for j := 0; j < i+10; j++ {
name += strSample[rand.Intn(len(strSample))]
}
tests = append(tests, struct {
name string
args args
want []byte
}{
name: name,
args: args{
s: name,
},
want: ([]byte)(name),
})
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Str2Bytes(tt.args.s); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Str2Bytes() = %v, want %v", got, tt.want)
}
})
}
}
func TestBytes2Str(t *testing.T) {
strSample := []string{
"你",
"好",
"世",
"界",
"語",
"言",
"變",
"化",
"hello",
"world",
"language",
"change",
}
type args struct {
b []byte
}
tests := []struct {
name string
args args
want string
}{
{
name: "abb",
args: args{
b: []byte{'a', 'b', 'b'},
},
want: "abb",
},
}
for i := 0; i < 100; i++ {
name := ""
for j := 0; j < i+10; j++ {
name += strSample[rand.Intn(len(strSample))]
}
tests = append(tests, struct {
name string
args args
want string
}{
name: name,
args: args{
b: ([]byte)(name),
},
want: (name),
})
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := Bytes2Str(tt.args.b); got != tt.want {
t.Errorf("Bytes2Str() = %v, want %v", got, tt.want)
}
})
}
}
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標籤：區塊鏈
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