78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
/*
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Copyright 2022 Alibaba Group Holding Limited.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package utils
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import (
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"encoding/binary"
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"testing"
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)
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func TestReadNumberSimpleCast(t *testing.T) {
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bs := []byte{0x12, 0x34, 0x56, 0x78, 0x19, 0x28, 0x37, 0x46}
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var v8 uint8
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ReadNumberLittleEndianHack(&v8, bs)
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if v8 != 0x12 {
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t.Fatalf("expect 0x12, but is 0x%x", v8)
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}
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var v16 uint16
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ReadNumberLittleEndianHack(&v16, bs)
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if v16 != 0x3412 {
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t.Fatalf("expect 0x3412, but is 0x%x", v16)
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}
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var v32 uint32
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ReadNumberLittleEndianHack(&v32, bs)
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if v32 != 0x78563412 {
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t.Fatalf("expect 0x78563412, but is 0x%x", v32)
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}
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var v64 uint64
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ReadNumberLittleEndianHack(&v64, bs)
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if v64 != 0x4637281978563412 {
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t.Fatalf("expect 0x4637281978563412, but is 0x%x", v64)
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}
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}
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func BenchmarkReadNumberSimpleCast(b *testing.B) {
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var bs [4]byte
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var v uint32
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for i := 0; i < b.N; i++ {
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bs = [4]byte{0x12, 0x34, 0x56, 0x78}
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ReadNumberLittleEndianHack(&v, bs[:])
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}
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}
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func BenchmarkReadNumber(b *testing.B) {
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var bs [4]byte
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var v uint32
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for i := 0; i < b.N; i++ {
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bs = [4]byte{0x12, 0x34, 0x56, 0x78}
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ReadNumber(binary.LittleEndian, &v, bs[:])
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}
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}
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func BenchmarkLittleEndianRead(b *testing.B) {
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var bs [4]byte
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for i := 0; i < b.N; i++ {
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bs = [4]byte{0x12, 0x34, 0x56, 0x78}
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_ = binary.LittleEndian.Uint32(bs[:])
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}
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}
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