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|
package bare
import (
"io"
"reflect"
"testing"
"github.com/stretchr/testify/assert"
)
func init() {
RegisterUnion((*NameAge)(nil)).
Member(*new(Name), 0).
Member(*new(Age), 1)
}
type Name string
type Age int
type NameAge interface{ Union }
func (n Name) IsUnion() {}
func (a Age) IsUnion() {}
type Custom uint8
func (c *Custom) Unmarshal(r *Reader) error {
u, err := r.ReadU16()
if err != nil {
return err
}
*c = Custom(u >> 8)
return nil
}
func (c *Custom) Marshal(w *Writer) error {
return w.WriteU16(uint16(*c) << 8)
}
func TestMarshalValue(t *testing.T) {
var (
data []byte
err error
u8 uint8 = 0x42
u16 uint16 = 0xCAFE
u32 uint32 = 0xDEADBEEF
u64 uint64 = 0xCAFEBABEDEADBEEF
u uint = 0xDEADBEEF
vu Uint = 0xDEADBEEF
i8 int8 = -42
i16 int16 = -1234
i32 int32 = -12345678
i64 int64 = -12345678987654321
i int = -12345678
vi Int = -12345678
f32 float32 = 1337.42
f64 float64 = 133713371337.42424242
b bool = true
str string = "こんにちは、世界！"
)
payloads := [][]byte{
[]byte{0x42},
[]byte{0xFE, 0xCA},
[]byte{0xEF, 0xBE, 0xAD, 0xDE},
[]byte{0xEF, 0xBE, 0xAD, 0xDE, 0xBE, 0xBA, 0xFE, 0xCA},
[]byte{0xEF, 0xFD, 0xB6, 0xF5, 0x0D},
[]byte{0xD6},
[]byte{0x2E, 0xFB},
[]byte{0xB2, 0x9E, 0x43, 0xFF},
[]byte{0x4F, 0x0B, 0x6E, 0x9D, 0xAB, 0x23, 0xD4, 0xFF},
[]byte{0x9B, 0x85, 0xE3, 0x0B},
[]byte{0x71, 0x2D, 0xA7, 0x44},
[]byte{0x9B, 0x6C, 0xC9, 0x20, 0xF0, 0x21, 0x3F, 0x42},
[]byte{0x01},
[]byte{0x00},
[]byte{0x1B, 0xE3, 0x81, 0x93, 0xE3, 0x82, 0x93, 0xE3, 0x81, 0xAB,
0xE3, 0x81, 0xA1, 0xE3, 0x81, 0xAF, 0xE3, 0x80, 0x81, 0xE4, 0xB8,
0x96, 0xE7, 0x95, 0x8C, 0xEF, 0xBC, 0x81},
}
data, err = Marshal(&u8)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[0], data)
data, err = Marshal(&u16)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[1], data)
data, err = Marshal(&u32)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[2], data)
data, err = Marshal(&u64)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[3], data)
data, err = Marshal(&u)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[4], data)
data, err = Marshal(&vu)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[4], data)
data, err = Marshal(&i8)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[5], data)
data, err = Marshal(&i16)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[6], data)
data, err = Marshal(&i32)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[7], data)
data, err = Marshal(&i64)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[8], data)
data, err = Marshal(&i)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[9], data)
data, err = Marshal(&vi)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[9], data)
data, err = Marshal(&f32)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[10], data)
data, err = Marshal(&f64)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[11], data)
data, err = Marshal(&b)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[12], data)
b = false
data, err = Marshal(&b)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[13], data)
data, err = Marshal(&str)
assert.Nil(t, err, "Expected Marshal to return without error")
assert.Equal(t, payloads[14], data)
}
func TestMarshalOptional(t *testing.T) {
var val *uint32
data, err := Marshal(&val)
assert.Nil(t, err)
assert.Equal(t, []byte{0x00}, data)
val = new(uint32)
*val = 0xDEADBEEF
data, err = Marshal(&val)
assert.Nil(t, err)
assert.Equal(t, []byte{0x01, 0xEF, 0xBE, 0xAD, 0xDE}, data)
}
func TestMarshalStruct(t *testing.T) {
type Coordinates struct{ X, Y, Z uint }
coords := Coordinates{1, 2, 3}
reference := []byte{0x01, 0x02, 0x03}
data, err := Marshal(&coords)
assert.Nil(t, err)
assert.Equal(t, reference, data)
}
func TestMarshalOmittedFields(t *testing.T) {
type Coordinates struct {
X uint
Y uint
Z uint `bare:"-"`
}
coords := Coordinates{1, 2, 3}
reference := []byte{0x01, 0x02}
data, err := Marshal(&coords)
assert.Nil(t, err)
assert.Equal(t, reference, data)
}
func TestMarshalArray(t *testing.T) {
val := [4]uint8{0x11, 0x22, 0x33, 0x44}
reference := []byte{0x11, 0x22, 0x33, 0x44}
data, err := Marshal(&val)
assert.Nil(t, err)
assert.Equal(t, reference, data)
}
func TestMarshalSlice(t *testing.T) {
val := []uint8{0x11, 0x22, 0x33, 0x44}
reference := []byte{0x04, 0x11, 0x22, 0x33, 0x44}
data, err := Marshal(&val)
assert.Nil(t, err)
assert.Equal(t, reference, data)
}
func TestMarshalMap(t *testing.T) {
val := map[uint8]uint8{
0x01: 0x11,
0x02: 0x22,
0x03: 0x33,
}
// Go maps are unordered, so any of these are considered valid
references := [][]byte{
[]byte{
0x03,
0x01, 0x11,
0x02, 0x22,
0x03, 0x33,
},
[]byte{
0x03,
0x01, 0x11,
0x03, 0x33,
0x02, 0x22,
},
[]byte{
0x03,
0x03, 0x33,
0x02, 0x22,
0x01, 0x11,
},
[]byte{
0x03,
0x01, 0x11,
0x03, 0x33,
0x02, 0x22,
},
[]byte{
0x03,
0x03, 0x33,
0x01, 0x11,
0x02, 0x22,
},
[]byte{
0x03,
0x02, 0x22,
0x03, 0x33,
0x01, 0x11,
},
[]byte{
0x03,
0x02, 0x22,
0x01, 0x11,
0x03, 0x33,
},
}
data, err := Marshal(&val)
assert.Nil(t, err)
var found bool
for _, ref := range references {
if reflect.DeepEqual(ref, data) {
found = true
break
}
}
assert.True(t, found, "%x does not match reference", data)
}
func TestMarshalUnion(t *testing.T) {
var val NameAge = Name("Mary")
data, err := Marshal(&val)
assert.Nil(t, err)
reference := []byte{0x00, 0x04, 0x4d, 0x61, 0x72, 0x79}
assert.Equal(t, reference, data)
val = Age(24)
data, err = Marshal(&val)
assert.Nil(t, err)
reference = []byte{0x01, 0x30}
assert.Equal(t, reference, data)
}
func TestRoundtrip(t *testing.T) {
type T struct {
// Ensure that unions roundtrip correctly.
NameAge NameAge
}
val := T{
NameAge: Age(25),
}
data, err := Marshal(&val)
assert.Nil(t, err)
var val2 T
err = Unmarshal(data, &val2)
assert.Nil(t, err)
data2, err := Marshal(&val2)
assert.Nil(t, err)
assert.Equal(t, data, data2)
}
func TestMarshalCustom(t *testing.T) {
var val = Custom(0x42)
data, err := Marshal(&val)
assert.Nil(t, err)
assert.Equal(t, []byte{0x0, 0x42}, data)
}
func TestStream(t *testing.T) {
//Test that you can stream marshalls over the same io.Writer and stream unmarshals on the io.Reader
var err error
r, wp := io.Pipe()
w := NewWriter(wp)
go func() {
for x := 0; x < 10; x++ {
age := Age(x)
MarshalWriter(w, &age)
}
}()
var newAge Age
for x := 0; x < 10; x++ {
err = UnmarshalReader(r, &newAge)
assert.Nil(t, err)
assert.Equal(t, x, int(newAge))
}
}
|
