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decoder_test.go
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decoder_test.go
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package csproto_test
import (
"errors"
"io"
"math"
"testing"
"github.com/stretchr/testify/assert"
"github.com/CrowdStrike/csproto"
)
func TestDecoderSeek(t *testing.T) {
testData := []byte{0x08, 0x01, 0x10, 0x00, 0x1A, 0xE, 0x74, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x74, 0x65, 0x73, 0x74}
dec := csproto.NewDecoder(testData)
t.Run("seek start", func(t *testing.T) {
t.Run("negative seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(-1, io.SeekStart)
assert.Error(t, err, "cannot seek to before BOF")
assert.Equal(t, startPos, pos, "read position should not change")
})
t.Run("zero seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
pos, err := dec.Seek(0, io.SeekStart)
assert.NoError(t, err)
assert.Equal(t, int64(0), pos, "new read position should be BOF")
})
t.Run("invalid positive seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(int64(len(testData)+1), io.SeekStart)
assert.Error(t, err, "cannot seek to after EOF")
assert.Equal(t, startPos, pos, "read position should not change")
})
t.Run("valid positive seek", func(t *testing.T) {
dec.Reset()
pos, err := dec.Seek(2, io.SeekStart)
assert.NoError(t, err)
assert.Equal(t, int(pos), dec.Offset())
assert.True(t, dec.More())
})
})
t.Run("seek current", func(t *testing.T) {
t.Run("invalid negative seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(-1*(startPos+1), io.SeekCurrent)
assert.Error(t, err, "cannot seek to before BOF")
assert.Equal(t, startPos, pos, "read position should not change")
})
t.Run("valid negative seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(-1*startPos, io.SeekCurrent)
assert.NoError(t, err)
assert.Equal(t, int64(0), pos)
})
t.Run("zero seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(0, io.SeekCurrent)
assert.NoError(t, err)
assert.Equal(t, startPos, pos)
})
t.Run("invalid positive seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := int64(dec.Offset())
pos, err := dec.Seek(int64(len(testData)), io.SeekCurrent)
assert.Error(t, err, "cannot seek to after EOF")
assert.Equal(t, startPos, pos, "read position should not change")
})
t.Run("valid positive seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
pos, err := dec.Seek(2, io.SeekCurrent)
assert.NoError(t, err)
assert.Equal(t, int(pos), dec.Offset())
assert.True(t, dec.More())
})
})
t.Run("seek end", func(t *testing.T) {
t.Run("positive seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := dec.Offset()
pos, err := dec.Seek(1, io.SeekEnd)
assert.Error(t, err, "cannot seek to after EOF")
assert.Equal(t, int64(startPos), pos, "read position should not change")
})
t.Run("zero seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
pos, err := dec.Seek(0, io.SeekEnd)
assert.NoError(t, err)
assert.Equal(t, int64(len(testData)), pos, "read position should be at EOF")
assert.False(t, dec.More())
})
t.Run("invalid negative seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
startPos := dec.Offset()
pos, err := dec.Seek(int64(-1*(len(testData)+1)), io.SeekEnd)
assert.Error(t, err, "cannot seek to before BOF")
assert.Equal(t, int64(startPos), pos, "read position should be at EOF")
})
t.Run("valid negative seek", func(t *testing.T) {
dec.Reset()
_, _, _ = dec.DecodeTag()
_, _ = dec.DecodeBool()
pos, err := dec.Seek(-16, io.SeekEnd)
assert.NoError(t, err)
assert.Equal(t, int64(4), pos, "read position should be at EOF")
})
})
t.Run("invalid whence", func(t *testing.T) {
dec.Reset()
startPos := dec.Offset()
pos, err := dec.Seek(0, 1138)
assert.Error(t, err, "cannot seek with invalid 'whence'")
assert.Equal(t, int64(startPos), pos, "read position should not change")
})
}
func TestDecodeBool(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected bool
}{
{
name: "true value",
fieldNum: 1,
v: []byte{0x8, 0x1},
wt: csproto.WireTypeVarint,
expected: true,
},
{
name: "false value",
fieldNum: 2,
v: []byte{0x10, 0x0},
wt: csproto.WireTypeVarint,
expected: false,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeBool()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeString(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected string
}{
{
name: "empty string",
fieldNum: 1,
v: []byte{0xA, 0x0},
wt: csproto.WireTypeLengthDelimited,
expected: "",
},
{
name: "non-empty string",
fieldNum: 2,
v: []byte{0x12, 0xE, 0x74, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61, 0x20, 0x74, 0x65, 0x73, 0x74},
wt: csproto.WireTypeLengthDelimited,
expected: "this is a test",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeString()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeBytes(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected []byte
expectedErr error
}{
{
name: "empty slice",
fieldNum: 1,
v: []byte{0xA, 0x0},
wt: csproto.WireTypeLengthDelimited,
expected: []byte{},
},
{
name: "non-empty slice",
fieldNum: 2,
v: []byte{0x12, 0x3, 0x42, 0x11, 0x38},
wt: csproto.WireTypeLengthDelimited,
expected: []byte{0x42, 0x11, 0x38},
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeBytes()
if tc.expectedErr == nil {
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
} else {
assert.ErrorIs(t, err, tc.expectedErr)
}
})
}
// separate t.Run() because we're not checking for sentinel errors
t.Run("corrupt messages", func(t *testing.T) {
t.Run("truncated data", func(t *testing.T) {
// length-delimited field value with a length of 3 but only 2 bytes
data := []byte{0x12, 0x3, 0x42, 0x11}
dec := csproto.NewDecoder(data)
got, err := dec.DecodeBytes()
assert.Error(t, err)
assert.Nil(t, got)
})
t.Run("negative length", func(t *testing.T) {
// length-delimited field value with a length of -50
data := []byte{0xCE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x3, 0x42, 0x11, 0x38}
dec := csproto.NewDecoder(data)
got, err := dec.DecodeBytes()
assert.Error(t, err)
assert.Nil(t, got)
})
t.Run("length overflow", func(t *testing.T) {
// field length greater than 2GB
data := []byte{0x80, 0x80, 0x80, 0x80, 0x08}
dec := csproto.NewDecoder(data)
got, err := dec.DecodeBytes()
assert.Error(t, err)
assert.Nil(t, got)
})
})
}
func TestDecodeUInt32(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected uint32
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max uint",
fieldNum: 2,
v: []byte{0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x0F},
wt: csproto.WireTypeVarint,
expected: math.MaxUint32,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0x2A},
wt: csproto.WireTypeVarint,
expected: 42,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeUInt32()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeUInt64(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected uint64
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max uint",
fieldNum: 2,
v: []byte{0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x1},
wt: csproto.WireTypeVarint,
expected: math.MaxUint64,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0x92, 0xDA, 0x19},
wt: csproto.WireTypeVarint,
expected: 421138,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeUInt64()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeInt32(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected int32
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max int",
fieldNum: 2,
v: []byte{0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0x07},
wt: csproto.WireTypeVarint,
expected: math.MaxInt32,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0x2A},
wt: csproto.WireTypeVarint,
expected: 42,
},
{
name: "negative value",
fieldNum: 4,
v: []byte{0x20, 0xd6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1},
wt: csproto.WireTypeVarint,
expected: -42,
},
{
name: "min int",
fieldNum: 5,
v: []byte{0x28, 0x80, 0x80, 0x80, 0x80, 0xf8, 0xff, 0xff, 0xff, 0xff, 0x1},
wt: csproto.WireTypeVarint,
expected: math.MinInt32,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeInt32()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeSInt32(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected int32
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max uint",
fieldNum: 2,
v: []byte{0x10, 0xFE, 0xFF, 0xFF, 0xFF, 0x0F},
wt: csproto.WireTypeVarint,
expected: math.MaxInt32,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0x54},
wt: csproto.WireTypeVarint,
expected: 42,
},
{
name: "negative value",
fieldNum: 4,
v: []byte{0x20, 0x53},
wt: csproto.WireTypeVarint,
expected: -42,
},
{
name: "min uint",
fieldNum: 5,
v: []byte{0x28, 0xFF, 0xFF, 0xFF, 0xFF, 0x0F},
wt: csproto.WireTypeVarint,
expected: math.MinInt32,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeSInt32()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeInt64(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected int64
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max int",
fieldNum: 2,
v: []byte{0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F},
wt: csproto.WireTypeVarint,
expected: math.MaxInt64,
},
{
name: "min int",
fieldNum: 2,
v: []byte{0x10, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x1},
wt: csproto.WireTypeVarint,
expected: math.MinInt64,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0x92, 0xDA, 0x19},
wt: csproto.WireTypeVarint,
expected: 421138,
},
{
name: "negative value",
fieldNum: 3,
v: []byte{0x18, 0xee, 0xa5, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x1},
wt: csproto.WireTypeVarint,
expected: -421138,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeInt64()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeSInt64(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected int64
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x8, 0x0},
wt: csproto.WireTypeVarint,
expected: 0,
},
{
name: "max uint",
fieldNum: 2,
v: []byte{0x10, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01},
wt: csproto.WireTypeVarint,
expected: math.MaxInt64,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x18, 0xA4, 0xB4, 0x33},
wt: csproto.WireTypeVarint,
expected: 421138,
},
{
name: "negative value",
fieldNum: 4,
v: []byte{0x20, 0xA3, 0xB4, 0x33},
wt: csproto.WireTypeVarint,
expected: -421138,
},
{
name: "min uint",
fieldNum: 4,
v: []byte{0x20, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01},
wt: csproto.WireTypeVarint,
expected: math.MinInt64,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeSInt64()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeFixed32(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected uint32
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x0D, 0x00, 0x00, 0x00, 0x00},
wt: csproto.WireTypeFixed32,
expected: 0,
},
{
name: "max int",
fieldNum: 2,
v: []byte{0x15, 0xFF, 0xFF, 0xFF, 0x7F},
wt: csproto.WireTypeFixed32,
expected: math.MaxInt32,
},
{
name: "max uint",
fieldNum: 3,
v: []byte{0x1D, 0xFF, 0xFF, 0xFF, 0xFF},
wt: csproto.WireTypeFixed32,
expected: math.MaxUint32,
},
{
name: "regular value",
fieldNum: 4,
v: []byte{0x25, 0x72, 0x04, 0x00, 0x00},
wt: csproto.WireTypeFixed32,
expected: 1138,
},
{
name: "\"negative\" value",
fieldNum: 5,
v: []byte{0x2D, 0x72, 0x04, 0x00, 0x80},
wt: csproto.WireTypeFixed32,
expected: 0x80000472, // -1138 in hex
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeFixed32()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeFixed64(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected uint64
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
wt: csproto.WireTypeFixed64,
expected: 0,
},
{
name: "max int",
fieldNum: 2,
v: []byte{0x11, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F},
wt: csproto.WireTypeFixed64,
expected: math.MaxInt64,
},
{
name: "max uint",
fieldNum: 3,
v: []byte{0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
wt: csproto.WireTypeFixed64,
expected: math.MaxUint64,
},
{
name: "regular value",
fieldNum: 4,
v: []byte{0x21, 0x72, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
wt: csproto.WireTypeFixed64,
expected: 1138,
},
{
name: "\"negative\" value",
fieldNum: 5,
v: []byte{0x29, 0x72, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80},
wt: csproto.WireTypeFixed64,
expected: 0x8000000000000472, // -1138 in hex
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeFixed64()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeFloat32(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected float32
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x0D, 0x00, 0x00, 0x00, 0x00},
wt: csproto.WireTypeFixed32,
expected: 0.0,
},
{
name: "max float",
fieldNum: 2,
v: []byte{0x15, 0xFF, 0xFF, 0x7F, 0x7F},
wt: csproto.WireTypeFixed32,
expected: math.MaxFloat32,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x1D, 0x88, 0x74, 0x28, 0x42},
wt: csproto.WireTypeFixed32,
expected: 42.1138,
},
{
name: "negative value",
fieldNum: 4,
v: []byte{0x25, 0x88, 0x74, 0x28, 0xC2},
wt: csproto.WireTypeFixed32,
expected: -42.1138,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeFloat32()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodeFloat64(t *testing.T) {
cases := []struct {
name string
fieldNum int
v []byte
wt csproto.WireType
expected float64
}{
{
name: "zero",
fieldNum: 1,
v: []byte{0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
wt: csproto.WireTypeFixed64,
expected: 0.0,
},
{
name: "max double",
fieldNum: 2,
v: []byte{0x11, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xEF, 0x7F},
wt: csproto.WireTypeFixed64,
expected: math.MaxFloat64,
},
{
name: "regular value",
fieldNum: 3,
v: []byte{0x19, 0x74, 0x24, 0x97, 0xFF, 0x90, 0x0E, 0x45, 0x40},
wt: csproto.WireTypeFixed64,
expected: 42.1138,
},
{
name: "negative value",
fieldNum: 4,
v: []byte{0x21, 0x74, 0x24, 0x97, 0xFF, 0x90, 0x0e, 0x45, 0xC0},
wt: csproto.WireTypeFixed64,
expected: -42.1138,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
dec := csproto.NewDecoder(tc.v)
tag, wt, err := dec.DecodeTag()
assert.Equal(t, tc.fieldNum, tag, "tag should match")
assert.Equal(t, tc.wt, wt, "wire type should match")
assert.NoError(t, err, "should not fail")
got, err := dec.DecodeFloat64()
assert.NoError(t, err)
assert.Equal(t, tc.expected, got)
})
}
}
func TestDecodePackedBool(t *testing.T) {
var (
data = []byte{
// tag=4, wire type=2
0x22,
// total length (3)
0x03,
// varint true/1
0x01,
// varint false/0
0x00,
// varint true/1
0x01,
}
)
dec := csproto.NewDecoder(data)
tag, wt, err := dec.DecodeTag()
assert.NoError(t, err)
assert.Equal(t, 4, tag, "tag should match")
assert.Equal(t, csproto.WireTypeLengthDelimited, wt, "wire type should match")
vals, err := dec.DecodePackedBool()
assert.NoError(t, err)
assert.ElementsMatch(t, vals, []bool{true, false, true}, "slice values should match")
}
func TestDecodePackedInt32(t *testing.T) {
var (
data = []byte{
// tag=4, wire type=2
0x22,
// total length (6)
0x06,
// varint 3
0x03,
// varint 270
0x8E, 0x02,
// varint 86942
0x9E, 0xA7, 0x05,
}
)
dec := csproto.NewDecoder(data)
tag, wt, err := dec.DecodeTag()
assert.NoError(t, err)
assert.Equal(t, 4, tag, "tag should match")
assert.Equal(t, csproto.WireTypeLengthDelimited, wt, "wire type should match")
vals, err := dec.DecodePackedInt32()
assert.NoError(t, err)
assert.ElementsMatch(t, vals, []int32{3, 270, 86942}, "slice values should match")
}
func TestDecodePackedInt64(t *testing.T) {
var (
data = []byte{
// tag=4, wire type=2
0x22,
// total length (9)
0x09,
// varint 3
0x03,
// varint 270
0x8E, 0x02,
// varint 86942
0x9E, 0xA7, 0x05,
// varint 421138
0x92, 0xDA, 0x19,
}
)
dec := csproto.NewDecoder(data)
tag, wt, err := dec.DecodeTag()
assert.NoError(t, err)
assert.Equal(t, 4, tag, "tag should match")
assert.Equal(t, csproto.WireTypeLengthDelimited, wt, "wire type should match")
vals, err := dec.DecodePackedInt64()
assert.NoError(t, err)
assert.ElementsMatch(t, vals, []int64{3, 270, 86942, 421138}, "slice values should match")
}
func TestDecodePackedUint32(t *testing.T) {
var (
data = []byte{
// tag=4, wire type=2
0x22,
// total length (6)
0x06,
// varint 3
0x03,
// varint 270
0x8E, 0x02,
// varint 86942
0x9E, 0xA7, 0x05,
}
)
dec := csproto.NewDecoder(data)
tag, wt, err := dec.DecodeTag()
assert.NoError(t, err)
assert.Equal(t, 4, tag, "tag should match")
assert.Equal(t, csproto.WireTypeLengthDelimited, wt, "wire type should match")
vals, err := dec.DecodePackedUint32()
assert.NoError(t, err)
assert.ElementsMatch(t, vals, []uint32{3, 270, 86942}, "slice values should match")
}
func TestDecodePackedUint64(t *testing.T) {
var (
data = []byte{
// tag=4, wire type=2
0x22,
// total length (9)
0x09,
// varint 3
0x03,
// varint 270
0x8E, 0x02,
// varint 86942
0x9E, 0xA7, 0x05,
// varint 421138
0x92, 0xDA, 0x19,
}
)
dec := csproto.NewDecoder(data)
tag, wt, err := dec.DecodeTag()
assert.NoError(t, err)
assert.Equal(t, 4, tag, "tag should match")
assert.Equal(t, csproto.WireTypeLengthDelimited, wt, "wire type should match")
vals, err := dec.DecodePackedUint64()
assert.NoError(t, err)
assert.ElementsMatch(t, vals, []uint64{3, 270, 86942, 421138}, "slice values should match")
}
func TestDecodePackedSint32(t *testing.T) {
var (
data = []byte{
// tag=1, wire type=1
0x0A,
// total bytes (11)
0x0B,
// zigzag 421138
0xA4, 0xB4, 0x33,
// zigzag -421138