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|
package proto
import (
"bytes"
"math"
"testing"
)
func TestAppendVarint(t *testing.T) {
m := AppendVarint(nil, 1, 42)
f, w, v, r, err := Parse(m)
if err != nil {
t.Fatal(err)
}
if len(r) != 0 {
t.Fatal("unexpected trailing bytes:", r)
}
if w != Varint {
t.Fatal("unexpected wire type:", t)
}
if f != 1 {
t.Fatal("unexpected field number:", f)
}
if u := v.Varint(); u != 42 {
t.Fatal("value mismatch, want 42 but got", u)
}
}
func TestAppendVarlen(t *testing.T) {
m := AppendVarlen(nil, 1, []byte("Hello World!"))
f, w, v, r, err := Parse(m)
if err != nil {
t.Fatal(err)
}
if len(r) != 0 {
t.Fatal("unexpected trailing bytes:", r)
}
if w != Varlen {
t.Fatal("unexpected wire type:", t)
}
if f != 1 {
t.Fatal("unexpected field number:", f)
}
if string(v) != "Hello World!" {
t.Fatalf("value mismatch, want \"Hello World!\" but got %q", v)
}
}
func TestAppendFixed32(t *testing.T) {
m := AppendFixed32(nil, 1, 42)
f, w, v, r, err := Parse(m)
if err != nil {
t.Fatal(err)
}
if len(r) != 0 {
t.Fatal("unexpected trailing bytes:", r)
}
if w != Fixed32 {
t.Fatal("unexpected wire type:", t)
}
if f != 1 {
t.Fatal("unexpected field number:", f)
}
if u := v.Fixed32(); u != 42 {
t.Fatal("value mismatch, want 42 but got", u)
}
}
func TestAppendFixed64(t *testing.T) {
m := AppendFixed64(nil, 1, 42)
f, w, v, r, err := Parse(m)
if err != nil {
t.Fatal(err)
}
if len(r) != 0 {
t.Fatal("unexpected trailing bytes:", r)
}
if w != Fixed64 {
t.Fatal("unexpected wire type:", t)
}
if f != 1 {
t.Fatal("unexpected field number:", f)
}
if u := v.Fixed64(); u != 42 {
t.Fatal("value mismatch, want 42 but got", u)
}
}
func TestDecodeFromAppend(t *testing.T) {
m := RawMessage(nil)
m = AppendVarint(m, 1, math.MaxUint64)
m = AppendVarlen(m, 2, []byte("Hello World!"))
m = AppendFixed32(m, 3, math.Float32bits(42.0))
m = AppendFixed64(m, 4, math.Float64bits(1234.0))
type M struct {
I int
S string
F32 float32
F64 float64
}
x := M{}
if err := Unmarshal(m, &x); err != nil {
t.Fatal(err)
}
if x.I != -1 {
t.Errorf("x.I=%d", x.I)
}
if x.S != "Hello World!" {
t.Errorf("x.S=%q", x.S)
}
if x.F32 != 42 {
t.Errorf("x.F32=%g", x.F32)
}
if x.F64 != 1234 {
t.Errorf("x.F64=%g", x.F64)
}
}
func TestDecodeFixture(t *testing.T) {
m := loadProtobuf(t, "message.pb")
m = assertParse(t, m, 1, Varint, makeVarint(10))
m = assertParse(t, m, 2, Varint, makeVarint(20))
m = assertParse(t, m, 3, Varint, makeVarint(30))
m = assertParse(t, m, 4, Varlen, []byte("Hello World!"))
assertEmpty(t, m)
}
func assertParse(t *testing.T, m RawMessage, f FieldNumber, w WireType, b []byte) RawMessage {
t.Helper()
f0, w0, b0, m, err := Parse(m)
if err != nil {
t.Fatal(err)
}
if f0 != f {
t.Errorf("field number mismatch, want %d but got %d", f, f0)
}
if w0 != w {
t.Errorf("wire type mismatch, want %d but got %d", w, w0)
}
if !bytes.Equal(b0, b) {
t.Errorf("value mismatch, want %v but got %v", b, b0)
}
return m
}
func assertEmpty(t *testing.T, m RawMessage) {
t.Helper()
if len(m) != 0 {
t.Errorf("unexpected content remained in the protobuf message: %v", m)
}
}
func BenchmarkScan(b *testing.B) {
m, _ := Marshal(&message{
A: 1,
B: 2,
C: 3,
S: submessage{
X: "hello",
Y: "world",
},
})
for range b.N {
Scan(m, func(f FieldNumber, t WireType, v RawValue) (bool, error) {
switch f {
case 1, 2, 3:
return true, nil
case 4:
err := Scan(v, func(f FieldNumber, t WireType, v RawValue) (bool, error) {
switch f {
case 1, 2:
return true, nil
default:
b.Error("invalid field number:", f)
return false, nil
}
})
return err != nil, err
default:
b.Error("invalid field number:", f)
return false, nil
}
})
}
}
|
