github.com/cgcardona/r-subnet-evm@v0.1.5/accounts/abi/abi_extra_test.go (about)

     1  // (c) 2023, Ava Labs, Inc. All rights reserved.
     2  // See the file LICENSE for licensing terms.
     3  
     4  package abi
     5  
     6  import (
     7  	"bytes"
     8  	"math/big"
     9  	"strings"
    10  	"testing"
    11  
    12  	"github.com/ethereum/go-ethereum/common"
    13  	"github.com/stretchr/testify/require"
    14  )
    15  
    16  // Note: This file contains tests in addition to those found in go-ethereum.
    17  
    18  const TEST_ABI = `[{"type":"function","name":"receive","inputs":[{"name":"sender","type":"address"},{"name":"amount","type":"uint256"},{"name":"memo","type":"bytes"}],"outputs":[{"internalType":"bool","name":"isAllowed","type":"bool"}]}]`
    19  
    20  func TestUnpackInputIntoInterface(t *testing.T) {
    21  	abi, err := JSON(strings.NewReader(TEST_ABI))
    22  	require.NoError(t, err)
    23  
    24  	type inputType struct {
    25  		Sender common.Address
    26  		Amount *big.Int
    27  		Memo   []byte
    28  	}
    29  	input := inputType{
    30  		Sender: common.HexToAddress("0x02"),
    31  		Amount: big.NewInt(100),
    32  		Memo:   []byte("hello"),
    33  	}
    34  	data, err := abi.Pack("receive", input.Sender, input.Amount, input.Memo)
    35  	require.NoError(t, err)
    36  
    37  	// Unpack into interface
    38  	var v inputType
    39  	err = abi.UnpackInputIntoInterface(&v, "receive", data[4:]) // skips 4 byte selector
    40  	require.NoError(t, err)
    41  
    42  	// Verify unpacked values match input
    43  	require.Equal(t, v.Amount, input.Amount)
    44  	require.EqualValues(t, v.Amount, input.Amount)
    45  	require.True(t, bytes.Equal(v.Memo, input.Memo))
    46  }
    47  
    48  func TestPackOutput(t *testing.T) {
    49  	abi, err := JSON(strings.NewReader(TEST_ABI))
    50  	require.NoError(t, err)
    51  
    52  	bytes, err := abi.PackOutput("receive", true)
    53  	require.NoError(t, err)
    54  
    55  	vals, err := abi.Methods["receive"].Outputs.Unpack(bytes)
    56  	require.NoError(t, err)
    57  
    58  	require.Len(t, vals, 1)
    59  	require.True(t, vals[0].(bool))
    60  }