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