92 lines
3.2 KiB
Go
92 lines
3.2 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
package core
|
|
|
|
import (
|
|
"bytes"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
)
|
|
|
|
func TestBufferWrites(t *testing.T) {
|
|
buf := NewPool(0).Get()
|
|
|
|
tests := []struct {
|
|
desc string
|
|
f func()
|
|
want string
|
|
}{
|
|
{"AppendByte", func() { buf.AppendByte('v') }, "v"},
|
|
{"AppendString", func() { buf.AppendString("foo") }, "foo"},
|
|
{"AppendIntPositive", func() { buf.AppendInt(42) }, "42"},
|
|
{"AppendIntNegative", func() { buf.AppendInt(-42) }, "-42"},
|
|
{"AppendUint", func() { buf.AppendUint(42) }, "42"},
|
|
{"AppendBool", func() { buf.AppendBool(true) }, "true"},
|
|
{"AppendFloat64", func() { buf.AppendFloat(3.14, 64) }, "3.14"},
|
|
// Intenationally introduce some floating-point error.
|
|
{"AppendFloat32", func() { buf.AppendFloat(float64(float32(3.14)), 32) }, "3.14"},
|
|
{"AppendWrite", func() { buf.Write([]byte("foo")) }, "foo"},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
t.Run(tt.desc, func(t *testing.T) {
|
|
buf.Reset()
|
|
tt.f()
|
|
assert.Equal(t, tt.want, buf.String(), "Unexpected buffer.String().")
|
|
assert.Equal(t, tt.want, string(buf.Bytes()), "Unexpected string(buffer.Bytes()).")
|
|
assert.Equal(t, len(tt.want), buf.Len(), "Unexpected buffer length.")
|
|
// We're not writing more than a kibibyte in tests.
|
|
assert.Equal(t, _size, buf.Cap(), "Expected buffer capacity to remain constant.")
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkBuffers(b *testing.B) {
|
|
// Because we use the strconv.AppendFoo functions so liberally, we can't
|
|
// use the standard library's bytes.Buffer anyways (without incurring a
|
|
// bunch of extra allocations). Nevertheless, let's make sure that we're
|
|
// not losing any precious nanoseconds.
|
|
str := strings.Repeat("a", 1024)
|
|
slice := make([]byte, 1024)
|
|
buf := bytes.NewBuffer(slice)
|
|
custom := NewPool(0).Get()
|
|
b.Run("ByteSlice", func(b *testing.B) {
|
|
for i := 0; i < b.N; i++ {
|
|
slice = append(slice, str...)
|
|
slice = slice[:0]
|
|
}
|
|
})
|
|
b.Run("BytesBuffer", func(b *testing.B) {
|
|
for i := 0; i < b.N; i++ {
|
|
buf.WriteString(str)
|
|
buf.Reset()
|
|
}
|
|
})
|
|
b.Run("CustomBuffer", func(b *testing.B) {
|
|
for i := 0; i < b.N; i++ {
|
|
custom.AppendString(str)
|
|
custom.Reset()
|
|
}
|
|
})
|
|
}
|