accounts/abi/bind: fixed unpacking error (#22230)

There was a dormant error with structured inputs that failed unpacking.
This commit fixes the error by switching casting to the better abi.ConvertType function.
It also adds a test for calling a view function that returns a struct
pull/22302/head
Marius van der Wijden 4 years ago committed by GitHub
parent 27786671d2
commit cb3c7e4319
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
  1. 3
      accounts/abi/abi_test.go
  2. 64
      accounts/abi/bind/bind_test.go
  3. 2
      accounts/abi/bind/template.go

@ -43,6 +43,7 @@ const jsondata = `
{ "type" : "function", "name" : "uint64[2]", "inputs" : [ { "name" : "inputs", "type" : "uint64[2]" } ] },
{ "type" : "function", "name" : "uint64[]", "inputs" : [ { "name" : "inputs", "type" : "uint64[]" } ] },
{ "type" : "function", "name" : "int8", "inputs" : [ { "name" : "inputs", "type" : "int8" } ] },
{ "type" : "function", "name" : "bytes32", "inputs" : [ { "name" : "inputs", "type" : "bytes32" } ] },
{ "type" : "function", "name" : "foo", "inputs" : [ { "name" : "inputs", "type" : "uint32" } ] },
{ "type" : "function", "name" : "bar", "inputs" : [ { "name" : "inputs", "type" : "uint32" }, { "name" : "string", "type" : "uint16" } ] },
{ "type" : "function", "name" : "slice", "inputs" : [ { "name" : "inputs", "type" : "uint32[2]" } ] },
@ -68,6 +69,7 @@ var (
String, _ = NewType("string", "", nil)
Bool, _ = NewType("bool", "", nil)
Bytes, _ = NewType("bytes", "", nil)
Bytes32, _ = NewType("bytes32", "", nil)
Address, _ = NewType("address", "", nil)
Uint64Arr, _ = NewType("uint64[]", "", nil)
AddressArr, _ = NewType("address[]", "", nil)
@ -98,6 +100,7 @@ var methods = map[string]Method{
"uint64[]": NewMethod("uint64[]", "uint64[]", Function, "", false, false, []Argument{{"inputs", Uint64Arr, false}}, nil),
"uint64[2]": NewMethod("uint64[2]", "uint64[2]", Function, "", false, false, []Argument{{"inputs", Uint64Arr2, false}}, nil),
"int8": NewMethod("int8", "int8", Function, "", false, false, []Argument{{"inputs", Int8, false}}, nil),
"bytes32": NewMethod("bytes32", "bytes32", Function, "", false, false, []Argument{{"inputs", Bytes32, false}}, nil),
"foo": NewMethod("foo", "foo", Function, "", false, false, []Argument{{"inputs", Uint32, false}}, nil),
"bar": NewMethod("bar", "bar", Function, "", false, false, []Argument{{"inputs", Uint32, false}, {"string", Uint16, false}}, nil),
"slice": NewMethod("slice", "slice", Function, "", false, false, []Argument{{"inputs", Uint32Arr2, false}}, nil),

@ -529,6 +529,70 @@ var bindTests = []struct {
nil,
nil,
},
// Tests that structs are correctly unpacked
{
`Structs`,
`
pragma solidity ^0.6.5;
pragma experimental ABIEncoderV2;
contract Structs {
struct A {
bytes32 B;
}
function F() public view returns (A[] memory a, uint256[] memory c, bool[] memory d) {
A[] memory a = new A[](2);
a[0].B = bytes32(uint256(1234) << 96);
uint256[] memory c;
bool[] memory d;
return (a, c, d);
}
function G() public view returns (A[] memory a) {
A[] memory a = new A[](2);
a[0].B = bytes32(uint256(1234) << 96);
return a;
}
}
`,
[]string{`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`},
[]string{`[{"inputs":[],"name":"F","outputs":[{"components":[{"internalType":"bytes32","name":"B","type":"bytes32"}],"internalType":"structStructs.A[]","name":"a","type":"tuple[]"},{"internalType":"uint256[]","name":"c","type":"uint256[]"},{"internalType":"bool[]","name":"d","type":"bool[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"G","outputs":[{"components":[{"internalType":"bytes32","name":"B","type":"bytes32"}],"internalType":"structStructs.A[]","name":"a","type":"tuple[]"}],"stateMutability":"view","type":"function"}]`},
`
"math/big"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
`,
`
// Generate a new random account and a funded simulator
key, _ := crypto.GenerateKey()
auth, _ := bind.NewKeyedTransactorWithChainID(key, big.NewInt(1337))
sim := backends.NewSimulatedBackend(core.GenesisAlloc{auth.From: {Balance: big.NewInt(10000000000)}}, 10000000)
defer sim.Close()
// Deploy a structs method invoker contract and execute its default method
_, _, structs, err := DeployStructs(auth, sim)
if err != nil {
t.Fatalf("Failed to deploy defaulter contract: %v", err)
}
sim.Commit()
opts := bind.CallOpts{}
if _, err := structs.F(&opts); err != nil {
t.Fatalf("Failed to invoke F method: %v", err)
}
if _, err := structs.G(&opts); err != nil {
t.Fatalf("Failed to invoke G method: %v", err)
}
`,
nil,
nil,
nil,
nil,
},
// Tests that non-existent contracts are reported as such (though only simulator test)
{
`NonExistent`,

@ -308,7 +308,7 @@ var (
return *outstruct, err
}
{{range $i, $t := .Normalized.Outputs}}
outstruct.{{.Name}} = out[{{$i}}].({{bindtype .Type $structs}}){{end}}
outstruct.{{.Name}} = *abi.ConvertType(out[{{$i}}], new({{bindtype .Type $structs}})).(*{{bindtype .Type $structs}}){{end}}
return *outstruct, err
{{else}}

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