add bytes delta

Author: CC11001100

Diff for: byte.go

@@ -3,42 +3,3 @@ package delta
 // ToByteSliceDelta 不单独实现了，直接认为是int的一种特殊情况，为了调用方的代码可读性这里就给个别名
 var ToByteSliceDelta = ToIntegerSliceDelta[byte]
 var FromByteSliceDelta = FromIntegerSliceDelta[byte]
-
-//// ToByteSliceDelta 字节数组
-//func ToByteSliceDelta(bytes []byte, compareToType CompareToType) []byte {
-//	deltaSlice := make([]byte, 0)
-//	for index, byteValue := range bytes {
-//		if index == 0 {
-//			deltaSlice[index] = byteValue
-//			continue
-//		}
-//		switch compareToType {
-//		case CompareToFirst:
-//			deltaSlice[index] = byteValue - bytes[0]
-//		case CompareToLast:
-//			deltaSlice[index] = byteValue - bytes[index-1]
-//		default:
-//			panic(fmt.Errorf("not support compare type: %#v", compareToType))
-//		}
-//	}
-//	return deltaSlice
-//}
-
-//func FromByteSliceDelta(deltaSlice []byte, compareToType CompareToType) []byte {
-//	bytes := make([]byte, 0)
-//	for index, delta := range deltaSlice {
-//		if index == 0 {
-//			bytes[index] = delta
-//			continue
-//		}
-//		switch compareToType {
-//		case CompareToFirst:
-//			bytes[index] = bytes[index-1] + delta
-//		case CompareToLast:
-//			bytes[index] = bytes[index-1] + delta
-//		default:
-//			panic(fmt.Errorf("not support compare type: %#v", compareToType))
-//		}
-//	}
-//	return bytes
-//}

Diff for: byte_test.go

@@ -0,0 +1,16 @@
+package delta
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestToByteSliceDelta(t *testing.T) {
+	bytes := []byte{1, 2, 3, 4, 5}
+	//t.Log(bytes)
+	deltaSlice := ToByteSliceDelta(bytes, CompareToLast)
+	//t.Log(deltaSlice)
+	originalBytes := FromByteSliceDelta(deltaSlice, CompareToLast)
+	//t.Log(originalBytes)
+	assert.Equal(t, bytes, originalBytes)
+}