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package eventstream
import (
"bytes"
"encoding/binary"
"io"
"reflect"
"testing"
"time"
)
func binWrite(v interface{}) []byte {
var w bytes.Buffer
binary.Write(&w, binary.BigEndian, v)
return w.Bytes()
}
var testValueEncodingCases = []struct {
Val Value
Expect []byte
Decode func(io.Reader) (Value, error)
}{
{
BoolValue(true),
[]byte{byte(trueValueType)},
nil,
},
{
BoolValue(false),
[]byte{byte(falseValueType)},
nil,
},
{
Int8Value(0x0f),
[]byte{byte(int8ValueType), 0x0f},
func(r io.Reader) (Value, error) {
var v Int8Value
err := v.decode(r)
return v, err
},
},
{
Int16Value(0x0f),
append([]byte{byte(int16ValueType)}, binWrite(int16(0x0f))...),
func(r io.Reader) (Value, error) {
var v Int16Value
err := v.decode(r)
return v, err
},
},
{
Int32Value(0x0f),
append([]byte{byte(int32ValueType)}, binWrite(int32(0x0f))...),
func(r io.Reader) (Value, error) {
var v Int32Value
err := v.decode(r)
return v, err
},
},
{
Int64Value(0x0f),
append([]byte{byte(int64ValueType)}, binWrite(int64(0x0f))...),
func(r io.Reader) (Value, error) {
var v Int64Value
err := v.decode(r)
return v, err
},
},
{
BytesValue([]byte{0, 1, 2, 3}),
[]byte{byte(bytesValueType), 0x00, 0x04, 0, 1, 2, 3},
func(r io.Reader) (Value, error) {
var v BytesValue
err := v.decode(r)
return v, err
},
},
{
StringValue("abc123"),
append([]byte{byte(stringValueType), 0, 6}, []byte("abc123")...),
func(r io.Reader) (Value, error) {
var v StringValue
err := v.decode(r)
return v, err
},
},
{
TimestampValue(
time.Date(2014, 04, 04, 0, 1, 0, 0, time.FixedZone("PDT", -7)),
),
append([]byte{byte(timestampValueType)}, binWrite(int64(1396569667000))...),
func(r io.Reader) (Value, error) {
var v TimestampValue
err := v.decode(r)
return v, err
},
},
{
UUIDValue(
[16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf},
),
[]byte{byte(uuidValueType), 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf},
func(r io.Reader) (Value, error) {
var v UUIDValue
err := v.decode(r)
return v, err
},
},
}
func TestValue_MarshalValue(t *testing.T) {
for i, c := range testValueEncodingCases {
var w bytes.Buffer
if err := c.Val.encode(&w); err != nil {
t.Fatalf("%d, expect no error, got %v", i, err)
}
if e, a := c.Expect, w.Bytes(); !reflect.DeepEqual(e, a) {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
}
}
func TestHeader_DecodeValues(t *testing.T) {
for i, c := range testValueEncodingCases {
r := bytes.NewBuffer(c.Expect)
v, err := decodeHeaderValue(r)
if err != nil {
t.Fatalf("%d, expect no error, got %v", i, err)
}
switch tv := v.(type) {
case TimestampValue:
exp := time.Time(c.Val.(TimestampValue))
if e, a := exp, time.Time(tv); !e.Equal(a) {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
default:
if e, a := c.Val, v; !reflect.DeepEqual(e, a) {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
}
}
}
func TestValue_Decode(t *testing.T) {
for i, c := range testValueEncodingCases {
if c.Decode == nil {
continue
}
r := bytes.NewBuffer(c.Expect)
r.ReadByte() // strip off Type field
v, err := c.Decode(r)
if err != nil {
t.Fatalf("%d, expect no error, got %v", i, err)
}
switch tv := v.(type) {
case TimestampValue:
exp := time.Time(c.Val.(TimestampValue))
if e, a := exp, time.Time(tv); !e.Equal(a) {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
default:
if e, a := c.Val, v; !reflect.DeepEqual(e, a) {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
}
}
}
func TestValue_String(t *testing.T) {
cases := []struct {
Val Value
Expect string
}{
{BoolValue(true), "true"},
{BoolValue(false), "false"},
{Int8Value(0x0f), "0x0f"},
{Int16Value(0x0f), "0x000f"},
{Int32Value(0x0f), "0x0000000f"},
{Int64Value(0x0f), "0x000000000000000f"},
{BytesValue([]byte{0, 1, 2, 3}), "AAECAw=="},
{StringValue("abc123"), "abc123"},
{TimestampValue(
time.Date(2014, 04, 04, 0, 1, 0, 0, time.FixedZone("PDT", -7)),
),
"1396569667000",
},
{UUIDValue([16]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf}),
"00010203-0405-0607-0809-0a0b0c0d0e0f",
},
}
for i, c := range cases {
if e, a := c.Expect, c.Val.String(); e != a {
t.Errorf("%d, expect %v, got %v", i, e, a)
}
}
}
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