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ReverseSlice_test.go
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ReverseSlice_test.go
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package utils
import (
"encoding/hex"
"testing"
"github.com/stretchr/testify/assert"
)
func TestReverseSlice(t *testing.T) {
a := []int{1, 2, 3, 4, 5}
b := ReverseSlice(a)
assert.Equal(t, []int{5, 4, 3, 2, 1}, b)
assert.Equal(t, []int{1, 2, 3, 4, 5}, a)
}
func TestReverseHash(t *testing.T) {
var hash1 [32]byte
var hash2 [32]byte
var reverseHash [32]byte
for i := 0; i < 32; i++ {
hash1[i] = byte(i)
hash2[i] = byte(i)
reverseHash[31-i] = byte(i)
}
reversed := ReverseHash(hash1)
assert.Equal(t, reverseHash, reversed)
assert.Equal(t, hash2, hash1)
}
func TestReverseSliceInPlace(t *testing.T) {
a := []int{1, 2, 3, 4, 5}
ReverseSliceInPlace(a)
assert.Equal(t, []int{5, 4, 3, 2, 1}, a)
}
func TestReverseHashInPlace(t *testing.T) {
var hash [32]byte
var reverseHash [32]byte
for i := 0; i < 32; i++ {
hash[i] = byte(i)
reverseHash[31-i] = byte(i)
}
ReverseHashInPlace(&hash)
assert.Equal(t, reverseHash, hash)
}
func TestDecodeAndReverseHexString(t *testing.T) {
b, err := DecodeAndReverseHexString("0102030405")
assert.Nil(t, err)
assert.Equal(t, []byte{5, 4, 3, 2, 1}, b)
}
func TestDecodeAndReverseHashString(t *testing.T) {
hash := make([]byte, 32)
var reverseHash [32]byte
for i := 0; i < 32; i++ {
hash[i] = byte(i)
reverseHash[31-i] = byte(i)
}
hashStr := hex.EncodeToString(hash)
b, err := DecodeAndReverseHashString(hashStr)
assert.Nil(t, err)
assert.Equal(t, reverseHash, b)
}
func TestHexEncodeAndReverseBytes(t *testing.T) {
str := ReverseAndHexEncodeSlice([]byte{5, 4, 3, 2, 1})
assert.Equal(t, "0102030405", str)
}