421 lines
12 KiB
Go
421 lines
12 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 abi
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import (
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"bytes"
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"fmt"
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"log"
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"math/big"
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"reflect"
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"strings"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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)
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const jsondata = `
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[
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{ "type" : "function", "name" : "balance", "constant" : true },
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{ "type" : "function", "name" : "send", "constant" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] }
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]`
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const jsondata2 = `
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[
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{ "type" : "function", "name" : "balance", "constant" : true },
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{ "type" : "function", "name" : "send", "constant" : false, "inputs" : [ { "name" : "amount", "type" : "uint256" } ] },
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{ "type" : "function", "name" : "test", "constant" : false, "inputs" : [ { "name" : "number", "type" : "uint32" } ] },
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{ "type" : "function", "name" : "string", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "string" } ] },
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{ "type" : "function", "name" : "bool", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "bool" } ] },
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{ "type" : "function", "name" : "address", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "address" } ] },
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{ "type" : "function", "name" : "uint64[2]", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[2]" } ] },
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{ "type" : "function", "name" : "uint64[]", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint64[]" } ] },
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{ "type" : "function", "name" : "foo", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] },
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{ "type" : "function", "name" : "bar", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] },
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{ "type" : "function", "name" : "slice", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] },
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{ "type" : "function", "name" : "slice256", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "uint256[2]" } ] },
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{ "type" : "function", "name" : "sliceAddress", "constant" : false, "inputs" : [ { "name" : "inputs", "type" : "address[]" } ] },
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{ "type" : "function", "name" : "sliceMultiAddress", "constant" : false, "inputs" : [ { "name" : "a", "type" : "address[]" }, { "name" : "b", "type" : "address[]" } ] }
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]`
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func TestReader(t *testing.T) {
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Uint256, _ := NewType("uint256")
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exp := ABI{
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Methods: map[string]Method{
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"balance": {
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"balance", true, nil, nil,
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},
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"send": {
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"send", false, []Argument{
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{"amount", Uint256, false},
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}, nil,
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},
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},
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}
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abi, err := JSON(strings.NewReader(jsondata))
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if err != nil {
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t.Error(err)
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}
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// deep equal fails for some reason
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t.Skip()
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if !reflect.DeepEqual(abi, exp) {
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t.Errorf("\nabi: %v\ndoes not match exp: %v", abi, exp)
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}
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}
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func TestTestNumbers(t *testing.T) {
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abi, err := JSON(strings.NewReader(jsondata2))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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if _, err := abi.Pack("balance"); err != nil {
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t.Error(err)
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}
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if _, err := abi.Pack("balance", 1); err == nil {
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t.Error("expected error for balance(1)")
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}
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if _, err := abi.Pack("doesntexist", nil); err == nil {
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t.Errorf("doesntexist shouldn't exist")
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}
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if _, err := abi.Pack("doesntexist", 1); err == nil {
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t.Errorf("doesntexist(1) shouldn't exist")
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}
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if _, err := abi.Pack("send", big.NewInt(1000)); err != nil {
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t.Error(err)
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}
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i := new(int)
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*i = 1000
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if _, err := abi.Pack("send", i); err == nil {
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t.Errorf("expected send( ptr ) to throw, requires *big.Int instead of *int")
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}
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if _, err := abi.Pack("test", uint32(1000)); err != nil {
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t.Error(err)
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}
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}
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func TestTestString(t *testing.T) {
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abi, err := JSON(strings.NewReader(jsondata2))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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if _, err := abi.Pack("string", "hello world"); err != nil {
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t.Error(err)
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}
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}
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func TestTestBool(t *testing.T) {
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abi, err := JSON(strings.NewReader(jsondata2))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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if _, err := abi.Pack("bool", true); err != nil {
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t.Error(err)
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}
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}
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func TestTestSlice(t *testing.T) {
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abi, err := JSON(strings.NewReader(jsondata2))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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slice := make([]uint64, 2)
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if _, err := abi.Pack("uint64[2]", slice); err != nil {
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t.Error(err)
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}
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if _, err := abi.Pack("uint64[]", slice); err != nil {
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t.Error(err)
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}
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}
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func TestMethodSignature(t *testing.T) {
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String, _ := NewType("string")
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m := Method{"foo", false, []Argument{{"bar", String, false}, {"baz", String, false}}, nil}
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exp := "foo(string,string)"
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if m.Sig() != exp {
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t.Error("signature mismatch", exp, "!=", m.Sig())
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}
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idexp := crypto.Keccak256([]byte(exp))[:4]
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if !bytes.Equal(m.Id(), idexp) {
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t.Errorf("expected ids to match %x != %x", m.Id(), idexp)
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}
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uintt, _ := NewType("uint256")
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m = Method{"foo", false, []Argument{{"bar", uintt, false}}, nil}
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exp = "foo(uint256)"
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if m.Sig() != exp {
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t.Error("signature mismatch", exp, "!=", m.Sig())
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}
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}
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func TestMultiPack(t *testing.T) {
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abi, err := JSON(strings.NewReader(jsondata2))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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sig := crypto.Keccak256([]byte("bar(uint32,uint16)"))[:4]
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sig = append(sig, make([]byte, 64)...)
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sig[35] = 10
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sig[67] = 11
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packed, err := abi.Pack("bar", uint32(10), uint16(11))
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if err != nil {
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t.Error(err)
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t.FailNow()
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}
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if !bytes.Equal(packed, sig) {
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t.Errorf("expected %x got %x", sig, packed)
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}
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}
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func ExampleJSON() {
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const definition = `[{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"isBar","outputs":[{"name":"","type":"bool"}],"type":"function"}]`
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abi, err := JSON(strings.NewReader(definition))
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if err != nil {
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log.Fatalln(err)
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}
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out, err := abi.Pack("isBar", common.HexToAddress("01"))
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if err != nil {
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log.Fatalln(err)
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}
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fmt.Printf("%x\n", out)
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// Output:
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// 1f2c40920000000000000000000000000000000000000000000000000000000000000001
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}
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func TestInputVariableInputLength(t *testing.T) {
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const definition = `[
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{ "type" : "function", "name" : "strOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "string" } ] },
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{ "type" : "function", "name" : "bytesOne", "constant" : true, "inputs" : [ { "name" : "str", "type" : "bytes" } ] },
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{ "type" : "function", "name" : "strTwo", "constant" : true, "inputs" : [ { "name" : "str", "type" : "string" }, { "name" : "str1", "type" : "string" } ] }
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]`
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abi, err := JSON(strings.NewReader(definition))
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if err != nil {
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t.Fatal(err)
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}
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// test one string
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strin := "hello world"
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strpack, err := abi.Pack("strOne", strin)
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if err != nil {
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t.Error(err)
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}
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offset := make([]byte, 32)
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offset[31] = 32
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length := make([]byte, 32)
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length[31] = byte(len(strin))
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value := common.RightPadBytes([]byte(strin), 32)
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exp := append(offset, append(length, value...)...)
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// ignore first 4 bytes of the output. This is the function identifier
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strpack = strpack[4:]
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if !bytes.Equal(strpack, exp) {
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t.Errorf("expected %x, got %x\n", exp, strpack)
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}
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// test one bytes
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btspack, err := abi.Pack("bytesOne", []byte(strin))
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if err != nil {
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t.Error(err)
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}
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// ignore first 4 bytes of the output. This is the function identifier
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btspack = btspack[4:]
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if !bytes.Equal(btspack, exp) {
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t.Errorf("expected %x, got %x\n", exp, btspack)
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}
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// test two strings
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str1 := "hello"
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str2 := "world"
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str2pack, err := abi.Pack("strTwo", str1, str2)
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if err != nil {
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t.Error(err)
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}
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offset1 := make([]byte, 32)
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offset1[31] = 64
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length1 := make([]byte, 32)
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length1[31] = byte(len(str1))
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value1 := common.RightPadBytes([]byte(str1), 32)
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offset2 := make([]byte, 32)
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offset2[31] = 128
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length2 := make([]byte, 32)
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length2[31] = byte(len(str2))
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value2 := common.RightPadBytes([]byte(str2), 32)
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exp2 := append(offset1, offset2...)
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exp2 = append(exp2, append(length1, value1...)...)
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exp2 = append(exp2, append(length2, value2...)...)
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// ignore first 4 bytes of the output. This is the function identifier
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str2pack = str2pack[4:]
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if !bytes.Equal(str2pack, exp2) {
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t.Errorf("expected %x, got %x\n", exp, str2pack)
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}
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// test two strings, first > 32, second < 32
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str1 = strings.Repeat("a", 33)
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str2pack, err = abi.Pack("strTwo", str1, str2)
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if err != nil {
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t.Error(err)
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}
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offset1 = make([]byte, 32)
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offset1[31] = 64
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length1 = make([]byte, 32)
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length1[31] = byte(len(str1))
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value1 = common.RightPadBytes([]byte(str1), 64)
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offset2[31] = 160
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exp2 = append(offset1, offset2...)
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exp2 = append(exp2, append(length1, value1...)...)
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exp2 = append(exp2, append(length2, value2...)...)
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// ignore first 4 bytes of the output. This is the function identifier
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str2pack = str2pack[4:]
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if !bytes.Equal(str2pack, exp2) {
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t.Errorf("expected %x, got %x\n", exp, str2pack)
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}
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// test two strings, first > 32, second >32
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str1 = strings.Repeat("a", 33)
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str2 = strings.Repeat("a", 33)
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str2pack, err = abi.Pack("strTwo", str1, str2)
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if err != nil {
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t.Error(err)
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}
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offset1 = make([]byte, 32)
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offset1[31] = 64
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length1 = make([]byte, 32)
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length1[31] = byte(len(str1))
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value1 = common.RightPadBytes([]byte(str1), 64)
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offset2 = make([]byte, 32)
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offset2[31] = 160
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length2 = make([]byte, 32)
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length2[31] = byte(len(str2))
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value2 = common.RightPadBytes([]byte(str2), 64)
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exp2 = append(offset1, offset2...)
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exp2 = append(exp2, append(length1, value1...)...)
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exp2 = append(exp2, append(length2, value2...)...)
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// ignore first 4 bytes of the output. This is the function identifier
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str2pack = str2pack[4:]
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if !bytes.Equal(str2pack, exp2) {
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t.Errorf("expected %x, got %x\n", exp, str2pack)
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}
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}
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func TestDefaultFunctionParsing(t *testing.T) {
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const definition = `[{ "name" : "balance" }]`
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abi, err := JSON(strings.NewReader(definition))
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if err != nil {
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t.Fatal(err)
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}
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if _, ok := abi.Methods["balance"]; !ok {
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t.Error("expected 'balance' to be present")
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}
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}
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func TestBareEvents(t *testing.T) {
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const definition = `[
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{ "type" : "event", "name" : "balance" },
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{ "type" : "event", "name" : "anon", "anonymous" : true},
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{ "type" : "event", "name" : "args", "inputs" : [{ "indexed":false, "name":"arg0", "type":"uint256" }, { "indexed":true, "name":"arg1", "type":"address" }] }
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]`
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arg0, _ := NewType("uint256")
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arg1, _ := NewType("address")
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expectedEvents := map[string]struct {
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Anonymous bool
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Args []Argument
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}{
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"balance": {false, nil},
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"anon": {true, nil},
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"args": {false, []Argument{
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{Name: "arg0", Type: arg0, Indexed: false},
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{Name: "arg1", Type: arg1, Indexed: true},
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}},
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}
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abi, err := JSON(strings.NewReader(definition))
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if err != nil {
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t.Fatal(err)
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}
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if len(abi.Events) != len(expectedEvents) {
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t.Fatalf("invalid number of events after parsing, want %d, got %d", len(expectedEvents), len(abi.Events))
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}
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for name, exp := range expectedEvents {
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got, ok := abi.Events[name]
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if !ok {
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t.Errorf("could not found event %s", name)
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continue
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}
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if got.Anonymous != exp.Anonymous {
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t.Errorf("invalid anonymous indication for event %s, want %v, got %v", name, exp.Anonymous, got.Anonymous)
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}
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if len(got.Inputs) != len(exp.Args) {
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t.Errorf("invalid number of args, want %d, got %d", len(exp.Args), len(got.Inputs))
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continue
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}
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for i, arg := range exp.Args {
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if arg.Name != got.Inputs[i].Name {
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t.Errorf("events[%s].Input[%d] has an invalid name, want %s, got %s", name, i, arg.Name, got.Inputs[i].Name)
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}
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if arg.Indexed != got.Inputs[i].Indexed {
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t.Errorf("events[%s].Input[%d] has an invalid indexed indication, want %v, got %v", name, i, arg.Indexed, got.Inputs[i].Indexed)
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}
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if arg.Type.T != got.Inputs[i].Type.T {
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t.Errorf("events[%s].Input[%d] has an invalid type, want %x, got %x", name, i, arg.Type.T, got.Inputs[i].Type.T)
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}
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}
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}
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}
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