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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package protoreflect
import (
"bytes"
"math"
"reflect"
"testing"
)
func TestValue(t *testing.T) {
fakeMessage := new(struct{ Message })
fakeList := new(struct{ List })
fakeMap := new(struct{ Map })
tests := []struct {
in Value
want interface{}
}{
{in: Value{}},
{in: ValueOf(nil)},
{in: ValueOf(true), want: true},
{in: ValueOf(int32(math.MaxInt32)), want: int32(math.MaxInt32)},
{in: ValueOf(int64(math.MaxInt64)), want: int64(math.MaxInt64)},
{in: ValueOf(uint32(math.MaxUint32)), want: uint32(math.MaxUint32)},
{in: ValueOf(uint64(math.MaxUint64)), want: uint64(math.MaxUint64)},
{in: ValueOf(float32(math.MaxFloat32)), want: float32(math.MaxFloat32)},
{in: ValueOf(float64(math.MaxFloat64)), want: float64(math.MaxFloat64)},
{in: ValueOf(string("hello")), want: string("hello")},
{in: ValueOf([]byte("hello")), want: []byte("hello")},
{in: ValueOf(fakeMessage), want: fakeMessage},
{in: ValueOf(fakeList), want: fakeList},
{in: ValueOf(fakeMap), want: fakeMap},
}
for _, tt := range tests {
got := tt.in.Interface()
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("Value(%v).Interface() = %v, want %v", tt.in, got, tt.want)
}
if got := tt.in.IsValid(); got != (tt.want != nil) {
t.Errorf("Value(%v).IsValid() = %v, want %v", tt.in, got, tt.want != nil)
}
switch want := tt.want.(type) {
case int32:
if got := tt.in.Int(); got != int64(want) {
t.Errorf("Value(%v).Int() = %v, want %v", tt.in, got, tt.want)
}
case int64:
if got := tt.in.Int(); got != int64(want) {
t.Errorf("Value(%v).Int() = %v, want %v", tt.in, got, tt.want)
}
case uint32:
if got := tt.in.Uint(); got != uint64(want) {
t.Errorf("Value(%v).Uint() = %v, want %v", tt.in, got, tt.want)
}
case uint64:
if got := tt.in.Uint(); got != uint64(want) {
t.Errorf("Value(%v).Uint() = %v, want %v", tt.in, got, tt.want)
}
case float32:
if got := tt.in.Float(); got != float64(want) {
t.Errorf("Value(%v).Float() = %v, want %v", tt.in, got, tt.want)
}
case float64:
if got := tt.in.Float(); got != float64(want) {
t.Errorf("Value(%v).Float() = %v, want %v", tt.in, got, tt.want)
}
case string:
if got := tt.in.String(); got != string(want) {
t.Errorf("Value(%v).String() = %v, want %v", tt.in, got, tt.want)
}
case []byte:
if got := tt.in.Bytes(); !bytes.Equal(got, want) {
t.Errorf("Value(%v).Bytes() = %v, want %v", tt.in, got, tt.want)
}
case EnumNumber:
if got := tt.in.Enum(); got != want {
t.Errorf("Value(%v).Enum() = %v, want %v", tt.in, got, tt.want)
}
case Message:
if got := tt.in.Message(); got != want {
t.Errorf("Value(%v).Message() = %v, want %v", tt.in, got, tt.want)
}
case List:
if got := tt.in.List(); got != want {
t.Errorf("Value(%v).List() = %v, want %v", tt.in, got, tt.want)
}
case Map:
if got := tt.in.Map(); got != want {
t.Errorf("Value(%v).Map() = %v, want %v", tt.in, got, tt.want)
}
}
}
}
func BenchmarkValue(b *testing.B) {
const testdata = "The quick brown fox jumped over the lazy dog."
var sink1 string
var sink2 Value
var sink3 interface{}
// Baseline measures the time to store a string into a native variable.
b.Run("Baseline", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
sink1 = testdata[:len(testdata)%(i+1)]
}
})
// Inline measures the time to store a string into a Value,
// assuming that the compiler could inline the ValueOf function call.
b.Run("Inline", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
sink2 = valueOfString(testdata[:len(testdata)%(i+1)])
}
})
// Value measures the time to store a string into a Value using the general
// ValueOf function call. This should be identical to Inline.
//
// NOTE: As of Go1.11, this is not as efficient as Inline due to the lack
// of some compiler optimizations:
// https://golang.org/issue/22310
// https://golang.org/issue/25189
b.Run("Value", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
sink2 = ValueOf(string(testdata[:len(testdata)%(i+1)]))
}
})
// Interface measures the time to store a string into an interface.
b.Run("Interface", func(b *testing.B) {
b.ReportAllocs()
for i := 0; i < b.N; i++ {
sink3 = string(testdata[:len(testdata)%(i+1)])
}
})
_, _, _ = sink1, sink2, sink3
}
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