byop-engine/vendor/github.com/bytedance/sonic/internal/native/fastint_test.tmpl

// +build amd64 


// Code generated by Makefile, DO NOT EDIT.

/*
 * Copyright 2021 ByteDance Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package {{PACKAGE}}

import (
    `strconv`
    `testing`
    `fmt`

    `github.com/stretchr/testify/assert`
)

func TestFastInt_IntToString(t *testing.T) {
    var buf [32]byte
    assert.Equal(t, "0"                    , string(buf[:i64toa(&buf[0], 0)]))
    assert.Equal(t, "1"                    , string(buf[:i64toa(&buf[0], 1)]))
    assert.Equal(t, "12"                   , string(buf[:i64toa(&buf[0], 12)]))
    assert.Equal(t, "123"                  , string(buf[:i64toa(&buf[0], 123)]))
    assert.Equal(t, "1234"                 , string(buf[:i64toa(&buf[0], 1234)]))
    assert.Equal(t, "12345"                , string(buf[:i64toa(&buf[0], 12345)]))
    assert.Equal(t, "123456"               , string(buf[:i64toa(&buf[0], 123456)]))
    assert.Equal(t, "1234567"              , string(buf[:i64toa(&buf[0], 1234567)]))
    assert.Equal(t, "12345678"             , string(buf[:i64toa(&buf[0], 12345678)]))
    assert.Equal(t, "123456789"            , string(buf[:i64toa(&buf[0], 123456789)]))
    assert.Equal(t, "1234567890"           , string(buf[:i64toa(&buf[0], 1234567890)]))
    assert.Equal(t, "12345678901"          , string(buf[:i64toa(&buf[0], 12345678901)]))
    assert.Equal(t, "123456789012"         , string(buf[:i64toa(&buf[0], 123456789012)]))
    assert.Equal(t, "1234567890123"        , string(buf[:i64toa(&buf[0], 1234567890123)]))
    assert.Equal(t, "12345678901234"       , string(buf[:i64toa(&buf[0], 12345678901234)]))
    assert.Equal(t, "123456789012345"      , string(buf[:i64toa(&buf[0], 123456789012345)]))
    assert.Equal(t, "1234567890123456"     , string(buf[:i64toa(&buf[0], 1234567890123456)]))
    assert.Equal(t, "12345678901234567"    , string(buf[:i64toa(&buf[0], 12345678901234567)]))
    assert.Equal(t, "123456789012345678"   , string(buf[:i64toa(&buf[0], 123456789012345678)]))
    assert.Equal(t, "1234567890123456789"  , string(buf[:i64toa(&buf[0], 1234567890123456789)]))
    assert.Equal(t, "9223372036854775807"  , string(buf[:i64toa(&buf[0], 9223372036854775807)]))
    assert.Equal(t, "-1"                   , string(buf[:i64toa(&buf[0], -1)]))
    assert.Equal(t, "-12"                  , string(buf[:i64toa(&buf[0], -12)]))
    assert.Equal(t, "-123"                 , string(buf[:i64toa(&buf[0], -123)]))
    assert.Equal(t, "-1234"                , string(buf[:i64toa(&buf[0], -1234)]))
    assert.Equal(t, "-12345"               , string(buf[:i64toa(&buf[0], -12345)]))
    assert.Equal(t, "-123456"              , string(buf[:i64toa(&buf[0], -123456)]))
    assert.Equal(t, "-1234567"             , string(buf[:i64toa(&buf[0], -1234567)]))
    assert.Equal(t, "-12345678"            , string(buf[:i64toa(&buf[0], -12345678)]))
    assert.Equal(t, "-123456789"           , string(buf[:i64toa(&buf[0], -123456789)]))
    assert.Equal(t, "-1234567890"          , string(buf[:i64toa(&buf[0], -1234567890)]))
    assert.Equal(t, "-12345678901"         , string(buf[:i64toa(&buf[0], -12345678901)]))
    assert.Equal(t, "-123456789012"        , string(buf[:i64toa(&buf[0], -123456789012)]))
    assert.Equal(t, "-1234567890123"       , string(buf[:i64toa(&buf[0], -1234567890123)]))
    assert.Equal(t, "-12345678901234"      , string(buf[:i64toa(&buf[0], -12345678901234)]))
    assert.Equal(t, "-123456789012345"     , string(buf[:i64toa(&buf[0], -123456789012345)]))
    assert.Equal(t, "-1234567890123456"    , string(buf[:i64toa(&buf[0], -1234567890123456)]))
    assert.Equal(t, "-12345678901234567"   , string(buf[:i64toa(&buf[0], -12345678901234567)]))
    assert.Equal(t, "-123456789012345678"  , string(buf[:i64toa(&buf[0], -123456789012345678)]))
    assert.Equal(t, "-1234567890123456789" , string(buf[:i64toa(&buf[0], -1234567890123456789)]))
    assert.Equal(t, "-9223372036854775808" , string(buf[:i64toa(&buf[0], -9223372036854775808)]))
}

func TestFastInt_UintToString(t *testing.T) {
    var buf [32]byte
    assert.Equal(t, "0"                    , string(buf[:u64toa(&buf[0], 0)]))
    assert.Equal(t, "1"                    , string(buf[:u64toa(&buf[0], 1)]))
    assert.Equal(t, "12"                   , string(buf[:u64toa(&buf[0], 12)]))
    assert.Equal(t, "123"                  , string(buf[:u64toa(&buf[0], 123)]))
    assert.Equal(t, "1234"                 , string(buf[:u64toa(&buf[0], 1234)]))
    assert.Equal(t, "12345"                , string(buf[:u64toa(&buf[0], 12345)]))
    assert.Equal(t, "123456"               , string(buf[:u64toa(&buf[0], 123456)]))
    assert.Equal(t, "1234567"              , string(buf[:u64toa(&buf[0], 1234567)]))
    assert.Equal(t, "12345678"             , string(buf[:u64toa(&buf[0], 12345678)]))
    assert.Equal(t, "123456789"            , string(buf[:u64toa(&buf[0], 123456789)]))
    assert.Equal(t, "1234567890"           , string(buf[:u64toa(&buf[0], 1234567890)]))
    assert.Equal(t, "12345678901"          , string(buf[:u64toa(&buf[0], 12345678901)]))
    assert.Equal(t, "123456789012"         , string(buf[:u64toa(&buf[0], 123456789012)]))
    assert.Equal(t, "1234567890123"        , string(buf[:u64toa(&buf[0], 1234567890123)]))
    assert.Equal(t, "12345678901234"       , string(buf[:u64toa(&buf[0], 12345678901234)]))
    assert.Equal(t, "123456789012345"      , string(buf[:u64toa(&buf[0], 123456789012345)]))
    assert.Equal(t, "1234567890123456"     , string(buf[:u64toa(&buf[0], 1234567890123456)]))
    assert.Equal(t, "12345678901234567"    , string(buf[:u64toa(&buf[0], 12345678901234567)]))
    assert.Equal(t, "123456789012345678"   , string(buf[:u64toa(&buf[0], 123456789012345678)]))
    assert.Equal(t, "1234567890123456789"  , string(buf[:u64toa(&buf[0], 1234567890123456789)]))
    assert.Equal(t, "12345678901234567890" , string(buf[:u64toa(&buf[0], 12345678901234567890)]))
    assert.Equal(t, "18446744073709551615" , string(buf[:u64toa(&buf[0], 18446744073709551615)]))
}

func BenchmarkFastInt_IntToString(b *testing.B) {
    benchmarks := []struct {
        name string
        test func(*testing.B)
    }{{
        name: "StdLib-Positive",
        test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendInt(buf[:0], int64(i), 10) }},
    }, {
        name: "StdLib-Negative",
        test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendInt(buf[:0], -int64(i), 10) }},
    }, {
        name: "FastInt-Positive",
        test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { i64toa(&buf[0], int64(i)) }},
    }, {
        name: "FastInt-Negative",
        test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { i64toa(&buf[0], -int64(i)) }},
    }}
    for _, bm := range benchmarks {
        b.Run(bm.name, bm.test)
    }
}

type utoaBench struct {
    name string
    num  uint64
}

func BenchmarkFastInt_UintToString(b *testing.B) {
    maxUint := "18446744073709551615"
    benchs := make([]utoaBench, len(maxUint) + 1)
    benchs[0].name = "Zero"
    benchs[0].num  = 0
    for i := 1; i <= len(maxUint); i++ {
        benchs[i].name = strconv.FormatInt(int64(i), 10) + "-Digs"
        benchs[i].num, _ = strconv.ParseUint(string(maxUint[:i]), 10, 64)
    }

    for _, t := range(benchs) {
        benchmarks := []struct {
            name string
            test func(*testing.B)
        }{{
            name: "StdLib",
            test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { strconv.AppendUint(buf[:0], t.num, 10) }},
        }, {
            name: "FastInt",
            test: func(b *testing.B) { var buf [32]byte; for i := 0; i < b.N; i++ { u64toa(&buf[0], t.num) }},
        }}
        for _, bm := range benchmarks {
            name := fmt.Sprintf("%s_%s", bm.name, t.name)
            b.Run(name, bm.test)
        }
    }
}