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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 protowire
import (
"bytes"
"encoding/hex"
"io"
"math"
"strings"
"testing"
)
type (
testOps struct {
// appendOps is a sequence of append operations, each appending to
// the output of the previous append operation.
appendOps []appendOp
// wantRaw (if not nil) is the bytes that the appendOps should produce.
wantRaw []byte
// consumeOps are a sequence of consume operations, each consuming the
// remaining output after the previous consume operation.
// The first consume operation starts with the output of appendOps.
consumeOps []consumeOp
}
// appendOp represents an Append operation.
appendOp = interface{}
appendTag struct {
inNum Number
inType Type
}
appendVarint struct {
inVal uint64
}
appendFixed32 struct {
inVal uint32
}
appendFixed64 struct {
inVal uint64
}
appendBytes struct {
inVal []byte
}
appendGroup struct {
inNum Number
inVal []byte
}
appendRaw []byte
// consumeOp represents an Consume operation.
consumeOp = interface{}
consumeField struct {
wantNum Number
wantType Type
wantCnt int
wantErr error
}
consumeFieldValue struct {
inNum Number
inType Type
wantCnt int
wantErr error
}
consumeTag struct {
wantNum Number
wantType Type
wantCnt int
wantErr error
}
consumeVarint struct {
wantVal uint64
wantCnt int
wantErr error
}
consumeFixed32 struct {
wantVal uint32
wantCnt int
wantErr error
}
consumeFixed64 struct {
wantVal uint64
wantCnt int
wantErr error
}
consumeBytes struct {
wantVal []byte
wantCnt int
wantErr error
}
consumeGroup struct {
inNum Number
wantVal []byte
wantCnt int
wantErr error
}
ops []interface{}
)
// dhex decodes a hex-string and returns the bytes and panics if s is invalid.
func dhex(s string) []byte {
b, err := hex.DecodeString(s)
if err != nil {
panic(err)
}
return b
}
func TestTag(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeTag{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendTag{inNum: 0, inType: Fixed32Type}},
wantRaw: dhex("05"),
consumeOps: ops{consumeTag{wantErr: errFieldNumber}},
}, {
appendOps: ops{appendTag{inNum: 1, inType: Fixed32Type}},
wantRaw: dhex("0d"),
consumeOps: ops{consumeTag{wantNum: 1, wantType: Fixed32Type, wantCnt: 1}},
}, {
appendOps: ops{appendTag{inNum: FirstReservedNumber, inType: BytesType}},
wantRaw: dhex("c2a309"),
consumeOps: ops{consumeTag{wantNum: FirstReservedNumber, wantType: BytesType, wantCnt: 3}},
}, {
appendOps: ops{appendTag{inNum: LastReservedNumber, inType: StartGroupType}},
wantRaw: dhex("fbe109"),
consumeOps: ops{consumeTag{wantNum: LastReservedNumber, wantType: StartGroupType, wantCnt: 3}},
}, {
appendOps: ops{appendTag{inNum: MaxValidNumber, inType: VarintType}},
wantRaw: dhex("f8ffffff0f"),
consumeOps: ops{consumeTag{wantNum: MaxValidNumber, wantType: VarintType, wantCnt: 5}},
}, {
appendOps: ops{appendVarint{inVal: ((math.MaxInt32+1)<<3 | uint64(VarintType))}},
wantRaw: dhex("8080808040"),
consumeOps: ops{consumeTag{wantErr: errFieldNumber}},
}})
}
func TestVarint(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("80"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("8080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("80808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("8080808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("808080808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("80808080808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("8080808080808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("808080808080808080"))},
consumeOps: ops{consumeVarint{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("80808080808080808080"))},
consumeOps: ops{consumeVarint{wantErr: errOverflow}},
}, {
// Test varints at various boundaries where the length changes.
appendOps: ops{appendVarint{inVal: 0x0}},
wantRaw: dhex("00"),
consumeOps: ops{consumeVarint{wantVal: 0, wantCnt: 1}},
}, {
appendOps: ops{appendVarint{inVal: 0x1}},
wantRaw: dhex("01"),
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 1}},
}, {
appendOps: ops{appendVarint{inVal: 0x7f}},
wantRaw: dhex("7f"),
consumeOps: ops{consumeVarint{wantVal: 0x7f, wantCnt: 1}},
}, {
appendOps: ops{appendVarint{inVal: 0x7f + 1}},
wantRaw: dhex("8001"),
consumeOps: ops{consumeVarint{wantVal: 0x7f + 1, wantCnt: 2}},
}, {
appendOps: ops{appendVarint{inVal: 0x3fff}},
wantRaw: dhex("ff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x3fff, wantCnt: 2}},
}, {
appendOps: ops{appendVarint{inVal: 0x3fff + 1}},
wantRaw: dhex("808001"),
consumeOps: ops{consumeVarint{wantVal: 0x3fff + 1, wantCnt: 3}},
}, {
appendOps: ops{appendVarint{inVal: 0x1fffff}},
wantRaw: dhex("ffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x1fffff, wantCnt: 3}},
}, {
appendOps: ops{appendVarint{inVal: 0x1fffff + 1}},
wantRaw: dhex("80808001"),
consumeOps: ops{consumeVarint{wantVal: 0x1fffff + 1, wantCnt: 4}},
}, {
appendOps: ops{appendVarint{inVal: 0xfffffff}},
wantRaw: dhex("ffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0xfffffff, wantCnt: 4}},
}, {
appendOps: ops{appendVarint{inVal: 0xfffffff + 1}},
wantRaw: dhex("8080808001"),
consumeOps: ops{consumeVarint{wantVal: 0xfffffff + 1, wantCnt: 5}},
}, {
appendOps: ops{appendVarint{inVal: 0x7ffffffff}},
wantRaw: dhex("ffffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x7ffffffff, wantCnt: 5}},
}, {
appendOps: ops{appendVarint{inVal: 0x7ffffffff + 1}},
wantRaw: dhex("808080808001"),
consumeOps: ops{consumeVarint{wantVal: 0x7ffffffff + 1, wantCnt: 6}},
}, {
appendOps: ops{appendVarint{inVal: 0x3ffffffffff}},
wantRaw: dhex("ffffffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x3ffffffffff, wantCnt: 6}},
}, {
appendOps: ops{appendVarint{inVal: 0x3ffffffffff + 1}},
wantRaw: dhex("80808080808001"),
consumeOps: ops{consumeVarint{wantVal: 0x3ffffffffff + 1, wantCnt: 7}},
}, {
appendOps: ops{appendVarint{inVal: 0x1ffffffffffff}},
wantRaw: dhex("ffffffffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x1ffffffffffff, wantCnt: 7}},
}, {
appendOps: ops{appendVarint{inVal: 0x1ffffffffffff + 1}},
wantRaw: dhex("8080808080808001"),
consumeOps: ops{consumeVarint{wantVal: 0x1ffffffffffff + 1, wantCnt: 8}},
}, {
appendOps: ops{appendVarint{inVal: 0xffffffffffffff}},
wantRaw: dhex("ffffffffffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0xffffffffffffff, wantCnt: 8}},
}, {
appendOps: ops{appendVarint{inVal: 0xffffffffffffff + 1}},
wantRaw: dhex("808080808080808001"),
consumeOps: ops{consumeVarint{wantVal: 0xffffffffffffff + 1, wantCnt: 9}},
}, {
appendOps: ops{appendVarint{inVal: 0x7fffffffffffffff}},
wantRaw: dhex("ffffffffffffffff7f"),
consumeOps: ops{consumeVarint{wantVal: 0x7fffffffffffffff, wantCnt: 9}},
}, {
appendOps: ops{appendVarint{inVal: 0x7fffffffffffffff + 1}},
wantRaw: dhex("80808080808080808001"),
consumeOps: ops{consumeVarint{wantVal: 0x7fffffffffffffff + 1, wantCnt: 10}},
}, {
appendOps: ops{appendVarint{inVal: math.MaxUint64}},
wantRaw: dhex("ffffffffffffffffff01"),
consumeOps: ops{consumeVarint{wantVal: math.MaxUint64, wantCnt: 10}},
}, {
appendOps: ops{appendRaw(dhex("ffffffffffffffffff02"))},
consumeOps: ops{consumeVarint{wantErr: errOverflow}},
}, {
// Test denormalized varints; where the encoding, while valid, is
// larger than necessary.
appendOps: ops{appendRaw(dhex("01"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 1}},
}, {
appendOps: ops{appendRaw(dhex("8100"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 2}},
}, {
appendOps: ops{appendRaw(dhex("818000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 3}},
}, {
appendOps: ops{appendRaw(dhex("81808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 4}},
}, {
appendOps: ops{appendRaw(dhex("8180808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 5}},
}, {
appendOps: ops{appendRaw(dhex("818080808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 6}},
}, {
appendOps: ops{appendRaw(dhex("81808080808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 7}},
}, {
appendOps: ops{appendRaw(dhex("8180808080808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 8}},
}, {
appendOps: ops{appendRaw(dhex("818080808080808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 9}},
}, {
appendOps: ops{appendRaw(dhex("81808080808080808000"))},
consumeOps: ops{consumeVarint{wantVal: 1, wantCnt: 10}},
}, {
appendOps: ops{appendRaw(dhex("8180808080808080808000"))},
consumeOps: ops{consumeVarint{wantErr: errOverflow}},
}})
}
func TestFixed32(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeFixed32{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("000000"))},
consumeOps: ops{consumeFixed32{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendFixed32{0}},
wantRaw: dhex("00000000"),
consumeOps: ops{consumeFixed32{wantVal: 0, wantCnt: 4}},
}, {
appendOps: ops{appendFixed32{math.MaxUint32}},
wantRaw: dhex("ffffffff"),
consumeOps: ops{consumeFixed32{wantVal: math.MaxUint32, wantCnt: 4}},
}, {
appendOps: ops{appendFixed32{0xf0e1d2c3}},
wantRaw: dhex("c3d2e1f0"),
consumeOps: ops{consumeFixed32{wantVal: 0xf0e1d2c3, wantCnt: 4}},
}})
}
func TestFixed64(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeFixed64{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("00000000000000"))},
consumeOps: ops{consumeFixed64{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendFixed64{0}},
wantRaw: dhex("0000000000000000"),
consumeOps: ops{consumeFixed64{wantVal: 0, wantCnt: 8}},
}, {
appendOps: ops{appendFixed64{math.MaxUint64}},
wantRaw: dhex("ffffffffffffffff"),
consumeOps: ops{consumeFixed64{wantVal: math.MaxUint64, wantCnt: 8}},
}, {
appendOps: ops{appendFixed64{0xf0e1d2c3b4a59687}},
wantRaw: dhex("8796a5b4c3d2e1f0"),
consumeOps: ops{consumeFixed64{wantVal: 0xf0e1d2c3b4a59687, wantCnt: 8}},
}})
}
func TestBytes(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeBytes{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendRaw(dhex("01"))},
consumeOps: ops{consumeBytes{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendVarint{0}, appendRaw("")},
wantRaw: dhex("00"),
consumeOps: ops{consumeBytes{wantVal: dhex(""), wantCnt: 1}},
}, {
appendOps: ops{appendBytes{[]byte("hello")}},
wantRaw: []byte("\x05hello"),
consumeOps: ops{consumeBytes{wantVal: []byte("hello"), wantCnt: 6}},
}, {
appendOps: ops{appendBytes{[]byte(strings.Repeat("hello", 50))}},
wantRaw: []byte("\xfa\x01" + strings.Repeat("hello", 50)),
consumeOps: ops{consumeBytes{wantVal: []byte(strings.Repeat("hello", 50)), wantCnt: 252}},
}, {
appendOps: ops{appendRaw("\x85\x80\x00hello")},
consumeOps: ops{consumeBytes{wantVal: []byte("hello"), wantCnt: 8}},
}, {
appendOps: ops{appendRaw("\x85\x80\x00hell")},
consumeOps: ops{consumeBytes{wantErr: io.ErrUnexpectedEOF}},
}})
}
func TestGroup(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeGroup{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{appendTag{inNum: 0, inType: StartGroupType}},
consumeOps: ops{consumeGroup{inNum: 1, wantErr: errFieldNumber}},
}, {
appendOps: ops{appendTag{inNum: 2, inType: EndGroupType}},
consumeOps: ops{consumeGroup{inNum: 1, wantErr: errEndGroup}},
}, {
appendOps: ops{appendTag{inNum: 1, inType: EndGroupType}},
consumeOps: ops{consumeGroup{inNum: 1, wantCnt: 1}},
}, {
appendOps: ops{
appendTag{inNum: 5, inType: Fixed32Type},
appendFixed32{0xf0e1d2c3},
appendTag{inNum: 5, inType: EndGroupType},
},
wantRaw: dhex("2dc3d2e1f02c"),
consumeOps: ops{consumeGroup{inNum: 5, wantVal: dhex("2dc3d2e1f0"), wantCnt: 6}},
}, {
appendOps: ops{
appendTag{inNum: 5, inType: Fixed32Type},
appendFixed32{0xf0e1d2c3},
appendRaw(dhex("ac808000")),
},
consumeOps: ops{consumeGroup{inNum: 5, wantVal: dhex("2dc3d2e1f0"), wantCnt: 9}},
}})
}
func TestField(t *testing.T) {
runTests(t, []testOps{{
appendOps: ops{appendRaw(dhex(""))},
consumeOps: ops{consumeField{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{
appendTag{inNum: 5000, inType: StartGroupType},
appendTag{inNum: 1, inType: VarintType},
appendVarint{123456789},
appendTag{inNum: 12, inType: Fixed32Type},
appendFixed32{123456789},
appendTag{inNum: 123, inType: Fixed64Type},
appendFixed64{123456789},
appendTag{inNum: 1234, inType: BytesType},
appendBytes{[]byte("hello")},
appendTag{inNum: 12345, inType: StartGroupType},
appendTag{inNum: 11, inType: VarintType},
appendVarint{123456789},
appendTag{inNum: 1212, inType: Fixed32Type},
appendFixed32{123456789},
appendTag{inNum: 123123, inType: Fixed64Type},
appendFixed64{123456789},
appendTag{inNum: 12341234, inType: BytesType},
appendBytes{[]byte("goodbye")},
appendTag{inNum: 12345, inType: EndGroupType},
appendTag{inNum: 5000, inType: EndGroupType},
},
wantRaw: dhex("c3b80208959aef3a6515cd5b07d90715cd5b0700000000924d0568656c6c6fcb830658959aef3ae54b15cd5b07998f3c15cd5b070000000092ff892f07676f6f64627965cc8306c4b802"),
consumeOps: ops{
consumeTag{wantNum: 5000, wantType: StartGroupType, wantCnt: 3},
consumeTag{wantNum: 1, wantType: VarintType, wantCnt: 1},
consumeVarint{wantVal: 123456789, wantCnt: 4},
consumeTag{wantNum: 12, wantType: Fixed32Type, wantCnt: 1},
consumeFixed32{wantVal: 123456789, wantCnt: 4},
consumeTag{wantNum: 123, wantType: Fixed64Type, wantCnt: 2},
consumeFixed64{wantVal: 123456789, wantCnt: 8},
consumeTag{wantNum: 1234, wantType: BytesType, wantCnt: 2},
consumeBytes{wantVal: []byte("hello"), wantCnt: 6},
consumeTag{wantNum: 12345, wantType: StartGroupType, wantCnt: 3},
consumeTag{wantNum: 11, wantType: VarintType, wantCnt: 1},
consumeVarint{wantVal: 123456789, wantCnt: 4},
consumeTag{wantNum: 1212, wantType: Fixed32Type, wantCnt: 2},
consumeFixed32{wantVal: 123456789, wantCnt: 4},
consumeTag{wantNum: 123123, wantType: Fixed64Type, wantCnt: 3},
consumeFixed64{wantVal: 123456789, wantCnt: 8},
consumeTag{wantNum: 12341234, wantType: BytesType, wantCnt: 4},
consumeBytes{wantVal: []byte("goodbye"), wantCnt: 8},
consumeTag{wantNum: 12345, wantType: EndGroupType, wantCnt: 3},
consumeTag{wantNum: 5000, wantType: EndGroupType, wantCnt: 3},
},
}, {
appendOps: ops{appendRaw(dhex("c3b80208959aef3a6515cd5b07d90715cd5b0700000000924d0568656c6c6fcb830658959aef3ae54b15cd5b07998f3c15cd5b070000000092ff892f07676f6f64627965cc8306c4b802"))},
consumeOps: ops{consumeField{wantNum: 5000, wantType: StartGroupType, wantCnt: 74}},
}, {
appendOps: ops{appendTag{inNum: 5, inType: EndGroupType}},
wantRaw: dhex("2c"),
consumeOps: ops{consumeField{wantErr: errEndGroup}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendTag{inNum: 22, inType: StartGroupType},
appendTag{inNum: 333, inType: StartGroupType},
appendTag{inNum: 4444, inType: StartGroupType},
appendTag{inNum: 4444, inType: EndGroupType},
appendTag{inNum: 333, inType: EndGroupType},
appendTag{inNum: 22, inType: EndGroupType},
appendTag{inNum: 1, inType: EndGroupType},
},
wantRaw: dhex("0bb301eb14e39502e49502ec14b4010c"),
consumeOps: ops{consumeField{wantNum: 1, wantType: StartGroupType, wantCnt: 16}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendGroup{inNum: 1, inVal: dhex("b301eb14e39502e49502ec14b401")},
},
wantRaw: dhex("0b" + "b301eb14e39502e49502ec14b401" + "0c"),
consumeOps: ops{consumeField{wantNum: 1, wantType: StartGroupType, wantCnt: 16}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendTag{inNum: 22, inType: StartGroupType},
appendTag{inNum: 333, inType: StartGroupType},
appendTag{inNum: 4444, inType: StartGroupType},
appendTag{inNum: 333, inType: EndGroupType},
appendTag{inNum: 22, inType: EndGroupType},
appendTag{inNum: 1, inType: EndGroupType},
},
consumeOps: ops{consumeField{wantErr: errEndGroup}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendTag{inNum: 22, inType: StartGroupType},
appendTag{inNum: 333, inType: StartGroupType},
appendTag{inNum: 4444, inType: StartGroupType},
appendTag{inNum: 4444, inType: EndGroupType},
appendTag{inNum: 333, inType: EndGroupType},
appendTag{inNum: 22, inType: EndGroupType},
},
consumeOps: ops{consumeField{wantErr: io.ErrUnexpectedEOF}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendTag{inNum: 22, inType: StartGroupType},
appendTag{inNum: 333, inType: StartGroupType},
appendTag{inNum: 4444, inType: StartGroupType},
appendTag{inNum: 0, inType: VarintType},
appendTag{inNum: 4444, inType: EndGroupType},
appendTag{inNum: 333, inType: EndGroupType},
appendTag{inNum: 22, inType: EndGroupType},
appendTag{inNum: 1, inType: EndGroupType},
},
consumeOps: ops{consumeField{wantErr: errFieldNumber}},
}, {
appendOps: ops{
appendTag{inNum: 1, inType: StartGroupType},
appendTag{inNum: 22, inType: StartGroupType},
appendTag{inNum: 333, inType: StartGroupType},
appendTag{inNum: 4444, inType: StartGroupType},
appendTag{inNum: 1, inType: 6},
appendTag{inNum: 4444, inType: EndGroupType},
appendTag{inNum: 333, inType: EndGroupType},
appendTag{inNum: 22, inType: EndGroupType},
appendTag{inNum: 1, inType: EndGroupType},
},
consumeOps: ops{consumeField{wantErr: errReserved}},
}})
}
func runTests(t *testing.T, tests []testOps) {
for _, tt := range tests {
t.Run("", func(t *testing.T) {
var b []byte
for _, op := range tt.appendOps {
b0 := b
switch op := op.(type) {
case appendTag:
b = AppendTag(b, op.inNum, op.inType)
case appendVarint:
b = AppendVarint(b, op.inVal)
case appendFixed32:
b = AppendFixed32(b, op.inVal)
case appendFixed64:
b = AppendFixed64(b, op.inVal)
case appendBytes:
b = AppendBytes(b, op.inVal)
case appendGroup:
b = AppendGroup(b, op.inNum, op.inVal)
case appendRaw:
b = append(b, op...)
}
check := func(label string, want int) {
t.Helper()
if got := len(b) - len(b0); got != want {
t.Errorf("len(Append%v) and Size%v mismatch: got %v, want %v", label, label, got, want)
}
}
switch op := op.(type) {
case appendTag:
check("Tag", SizeTag(op.inNum))
case appendVarint:
check("Varint", SizeVarint(op.inVal))
case appendFixed32:
check("Fixed32", SizeFixed32())
case appendFixed64:
check("Fixed64", SizeFixed64())
case appendBytes:
check("Bytes", SizeBytes(len(op.inVal)))
case appendGroup:
check("Group", SizeGroup(op.inNum, len(op.inVal)))
}
}
if tt.wantRaw != nil && !bytes.Equal(b, tt.wantRaw) {
t.Errorf("raw output mismatch:\ngot %x\nwant %x", b, tt.wantRaw)
}
for _, op := range tt.consumeOps {
check := func(label string, gotCnt, wantCnt int, wantErr error) {
t.Helper()
gotErr := ParseError(gotCnt)
if gotCnt < 0 {
gotCnt = 0
}
if gotCnt != wantCnt {
t.Errorf("Consume%v(): consumed %d bytes, want %d bytes consumed", label, gotCnt, wantCnt)
}
if gotErr != wantErr {
t.Errorf("Consume%v(): got %v error, want %v error", label, gotErr, wantErr)
}
b = b[gotCnt:]
}
switch op := op.(type) {
case consumeField:
gotNum, gotType, n := ConsumeField(b)
if gotNum != op.wantNum || gotType != op.wantType {
t.Errorf("ConsumeField() = (%d, %v), want (%d, %v)", gotNum, gotType, op.wantNum, op.wantType)
}
check("Field", n, op.wantCnt, op.wantErr)
case consumeFieldValue:
n := ConsumeFieldValue(op.inNum, op.inType, b)
check("FieldValue", n, op.wantCnt, op.wantErr)
case consumeTag:
gotNum, gotType, n := ConsumeTag(b)
if gotNum != op.wantNum || gotType != op.wantType {
t.Errorf("ConsumeTag() = (%d, %v), want (%d, %v)", gotNum, gotType, op.wantNum, op.wantType)
}
check("Tag", n, op.wantCnt, op.wantErr)
case consumeVarint:
gotVal, n := ConsumeVarint(b)
if gotVal != op.wantVal {
t.Errorf("ConsumeVarint() = %d, want %d", gotVal, op.wantVal)
}
check("Varint", n, op.wantCnt, op.wantErr)
case consumeFixed32:
gotVal, n := ConsumeFixed32(b)
if gotVal != op.wantVal {
t.Errorf("ConsumeFixed32() = %d, want %d", gotVal, op.wantVal)
}
check("Fixed32", n, op.wantCnt, op.wantErr)
case consumeFixed64:
gotVal, n := ConsumeFixed64(b)
if gotVal != op.wantVal {
t.Errorf("ConsumeFixed64() = %d, want %d", gotVal, op.wantVal)
}
check("Fixed64", n, op.wantCnt, op.wantErr)
case consumeBytes:
gotVal, n := ConsumeBytes(b)
if !bytes.Equal(gotVal, op.wantVal) {
t.Errorf("ConsumeBytes() = %x, want %x", gotVal, op.wantVal)
}
check("Bytes", n, op.wantCnt, op.wantErr)
case consumeGroup:
gotVal, n := ConsumeGroup(op.inNum, b)
if !bytes.Equal(gotVal, op.wantVal) {
t.Errorf("ConsumeGroup() = %x, want %x", gotVal, op.wantVal)
}
check("Group", n, op.wantCnt, op.wantErr)
}
}
})
}
}
func TestZigZag(t *testing.T) {
tests := []struct {
dec int64
enc uint64
}{
{math.MinInt64 + 0, math.MaxUint64 - 0},
{math.MinInt64 + 1, math.MaxUint64 - 2},
{math.MinInt64 + 2, math.MaxUint64 - 4},
{-3, 5},
{-2, 3},
{-1, 1},
{0, 0},
{+1, 2},
{+2, 4},
{+3, 6},
{math.MaxInt64 - 2, math.MaxUint64 - 5},
{math.MaxInt64 - 1, math.MaxUint64 - 3},
{math.MaxInt64 - 0, math.MaxUint64 - 1},
}
for _, tt := range tests {
if enc := EncodeZigZag(tt.dec); enc != tt.enc {
t.Errorf("EncodeZigZag(%d) = %d, want %d", tt.dec, enc, tt.enc)
}
if dec := DecodeZigZag(tt.enc); dec != tt.dec {
t.Errorf("DecodeZigZag(%d) = %d, want %d", tt.enc, dec, tt.dec)
}
}
}
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