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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"
)
var (
fakeMessage = new(struct{ Message })
fakeList = new(struct{ List })
fakeMap = new(struct{ Map })
)
func TestValue(t *testing.T) {
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 TestValueEqual(t *testing.T) {
tests := []struct {
x, y Value
want bool
}{
{Value{}, Value{}, true},
{Value{}, ValueOfBool(true), false},
{ValueOfBool(true), ValueOfBool(true), true},
{ValueOfBool(true), ValueOfBool(false), false},
{ValueOfBool(false), ValueOfInt32(0), false},
{ValueOfInt32(0), ValueOfInt32(0), true},
{ValueOfInt32(0), ValueOfInt32(1), false},
{ValueOfInt32(0), ValueOfInt64(0), false},
{ValueOfInt64(123), ValueOfInt64(123), true},
{ValueOfFloat64(0), ValueOfFloat64(0), true},
{ValueOfFloat64(math.NaN()), ValueOfFloat64(math.NaN()), true},
{ValueOfFloat64(math.NaN()), ValueOfFloat64(0), false},
{ValueOfFloat64(math.Inf(1)), ValueOfFloat64(math.Inf(1)), true},
{ValueOfFloat64(math.Inf(-1)), ValueOfFloat64(math.Inf(1)), false},
{ValueOfBytes(nil), ValueOfBytes(nil), true},
{ValueOfBytes(nil), ValueOfBytes([]byte{}), true},
{ValueOfBytes(nil), ValueOfBytes([]byte{1}), false},
{ValueOfEnum(0), ValueOfEnum(0), true},
{ValueOfEnum(0), ValueOfEnum(1), false},
{ValueOfBool(false), ValueOfMessage(fakeMessage), false},
{ValueOfMessage(fakeMessage), ValueOfList(fakeList), false},
{ValueOfList(fakeList), ValueOfMap(fakeMap), false},
{ValueOfMap(fakeMap), ValueOfMessage(fakeMessage), false},
// Composite types are not tested here.
// See proto.TestEqual.
}
for _, tt := range tests {
got := tt.x.Equal(tt.y)
if got != tt.want {
t.Errorf("(%v).Equal(%v) = %v, want %v", tt.x, tt.y, 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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