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common/hexutil: wrap errors in json.UnmarshalTypeError

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This adds type and struct field context to error messages.
Instead of "hex string of odd length" users will now see "json: cannot
unmarshal hex string of odd length into Go struct field SendTxArgs.from
of type common.Address".
This commit is contained in:
Felix Lange
2017-06-23 10:50:49 +02:00
parent b664bedcf2
commit 4a741df757
5 changed files with 102 additions and 59 deletions
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64
common/hexutil/json_test.go
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@ -62,12 +62,12 @@ var errJSONEOF = errors.New("unexpected end of JSON input")
var unmarshalBytesTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x0"`, wantErr: ErrOddLength},
{input: `"0xxx"`, wantErr: ErrSyntax},
{input: `"0x01zz01"`, wantErr: ErrSyntax},
{input: "null", wantErr: errNonString(bytesT)},
{input: "10", wantErr: errNonString(bytesT)},
{input: `"0"`, wantErr: wrapTypeError(ErrMissingPrefix, bytesT)},
{input: `"0x0"`, wantErr: wrapTypeError(ErrOddLength, bytesT)},
{input: `"0xxx"`, wantErr: wrapTypeError(ErrSyntax, bytesT)},
{input: `"0x01zz01"`, wantErr: wrapTypeError(ErrSyntax, bytesT)},
// valid encoding
{input: `""`, want: referenceBytes("")},
@ -127,16 +127,16 @@ func TestMarshalBytes(t *testing.T) {
var unmarshalBigTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
{input: `"0xx"`, wantErr: ErrSyntax},
{input: `"0x1zz01"`, wantErr: ErrSyntax},
{input: "null", wantErr: errNonString(bigT)},
{input: "10", wantErr: errNonString(bigT)},
{input: `"0"`, wantErr: wrapTypeError(ErrMissingPrefix, bigT)},
{input: `"0x"`, wantErr: wrapTypeError(ErrEmptyNumber, bigT)},
{input: `"0x01"`, wantErr: wrapTypeError(ErrLeadingZero, bigT)},
{input: `"0xx"`, wantErr: wrapTypeError(ErrSyntax, bigT)},
{input: `"0x1zz01"`, wantErr: wrapTypeError(ErrSyntax, bigT)},
{
input: `"0x10000000000000000000000000000000000000000000000000000000000000000"`,
wantErr: ErrBig256Range,
wantErr: wrapTypeError(ErrBig256Range, bigT),
},
// valid encoding
@ -208,14 +208,14 @@ func TestMarshalBig(t *testing.T) {
var unmarshalUint64Tests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
{input: `"0xfffffffffffffffff"`, wantErr: ErrUint64Range},
{input: `"0xx"`, wantErr: ErrSyntax},
{input: `"0x1zz01"`, wantErr: ErrSyntax},
{input: "null", wantErr: errNonString(uint64T)},
{input: "10", wantErr: errNonString(uint64T)},
{input: `"0"`, wantErr: wrapTypeError(ErrMissingPrefix, uint64T)},
{input: `"0x"`, wantErr: wrapTypeError(ErrEmptyNumber, uint64T)},
{input: `"0x01"`, wantErr: wrapTypeError(ErrLeadingZero, uint64T)},
{input: `"0xfffffffffffffffff"`, wantErr: wrapTypeError(ErrUint64Range, uint64T)},
{input: `"0xx"`, wantErr: wrapTypeError(ErrSyntax, uint64T)},
{input: `"0x1zz01"`, wantErr: wrapTypeError(ErrSyntax, uint64T)},
// valid encoding
{input: `""`, want: uint64(0)},
@ -298,15 +298,15 @@ var (
var unmarshalUintTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
{input: `"0x100000000"`, want: uint(maxUint33bits), wantErr32bit: ErrUintRange},
{input: `"0xfffffffffffffffff"`, wantErr: ErrUintRange},
{input: `"0xx"`, wantErr: ErrSyntax},
{input: `"0x1zz01"`, wantErr: ErrSyntax},
{input: "null", wantErr: errNonString(uintT)},
{input: "10", wantErr: errNonString(uintT)},
{input: `"0"`, wantErr: wrapTypeError(ErrMissingPrefix, uintT)},
{input: `"0x"`, wantErr: wrapTypeError(ErrEmptyNumber, uintT)},
{input: `"0x01"`, wantErr: wrapTypeError(ErrLeadingZero, uintT)},
{input: `"0x100000000"`, want: uint(maxUint33bits), wantErr32bit: wrapTypeError(ErrUintRange, uintT)},
{input: `"0xfffffffffffffffff"`, wantErr: wrapTypeError(ErrUintRange, uintT)},
{input: `"0xx"`, wantErr: wrapTypeError(ErrSyntax, uintT)},
{input: `"0x1zz01"`, wantErr: wrapTypeError(ErrSyntax, uintT)},
// valid encoding
{input: `""`, want: uint(0)},
@ -317,7 +317,7 @@ var unmarshalUintTests = []unmarshalTest{
{input: `"0x1122aaff"`, want: uint(0x1122aaff)},
{input: `"0xbbb"`, want: uint(0xbbb)},
{input: `"0xffffffff"`, want: uint(0xffffffff)},
{input: `"0xffffffffffffffff"`, want: uint(maxUint64bits), wantErr32bit: ErrUintRange},
{input: `"0xffffffffffffffff"`, want: uint(maxUint64bits), wantErr32bit: wrapTypeError(ErrUintRange, uintT)},
}
func TestUnmarshalUint(t *testing.T) {