4a741df757
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".
97 lines
2.8 KiB
Go
97 lines
2.8 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package common
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import (
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"encoding/json"
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"math/big"
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"strings"
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"testing"
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)
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func TestBytesConversion(t *testing.T) {
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bytes := []byte{5}
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hash := BytesToHash(bytes)
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var exp Hash
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exp[31] = 5
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if hash != exp {
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t.Errorf("expected %x got %x", exp, hash)
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}
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}
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func TestHashJsonValidation(t *testing.T) {
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var tests = []struct {
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Prefix string
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Size int
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Error string
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}{
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{"", 62, "json: cannot unmarshal hex string without 0x prefix into Go value of type common.Hash"},
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{"0x", 66, "hex string has length 66, want 64 for common.Hash"},
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{"0x", 63, "json: cannot unmarshal hex string of odd length into Go value of type common.Hash"},
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{"0x", 0, "hex string has length 0, want 64 for common.Hash"},
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{"0x", 64, ""},
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{"0X", 64, ""},
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}
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for _, test := range tests {
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input := `"` + test.Prefix + strings.Repeat("0", test.Size) + `"`
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var v Hash
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err := json.Unmarshal([]byte(input), &v)
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if err == nil {
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if test.Error != "" {
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t.Errorf("%s: error mismatch: have nil, want %q", input, test.Error)
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}
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} else {
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if err.Error() != test.Error {
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t.Errorf("%s: error mismatch: have %q, want %q", input, err, test.Error)
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}
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}
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}
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}
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func TestAddressUnmarshalJSON(t *testing.T) {
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var tests = []struct {
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Input string
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ShouldErr bool
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Output *big.Int
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}{
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{"", true, nil},
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{`""`, true, nil},
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{`"0x"`, true, nil},
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{`"0x00"`, true, nil},
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{`"0xG000000000000000000000000000000000000000"`, true, nil},
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{`"0x0000000000000000000000000000000000000000"`, false, big.NewInt(0)},
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{`"0x0000000000000000000000000000000000000010"`, false, big.NewInt(16)},
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}
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for i, test := range tests {
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var v Address
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err := json.Unmarshal([]byte(test.Input), &v)
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if err != nil && !test.ShouldErr {
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t.Errorf("test #%d: unexpected error: %v", i, err)
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}
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if err == nil {
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if test.ShouldErr {
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t.Errorf("test #%d: expected error, got none", i)
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}
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if v.Big().Cmp(test.Output) != 0 {
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t.Errorf("test #%d: address mismatch: have %v, want %v", i, v.Big(), test.Output)
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}
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}
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}
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}
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