| // 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) |
| } |
| } |
| } |
