github.1485827954.workers.dev/ethereum/go-ethereum@v1.14.3/core/vm/contracts_fuzz_test.go (about)

     1  // Copyright 2023 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"testing"
    21  
    22  	"github.com/ethereum/go-ethereum/common"
    23  )
    24  
    25  func FuzzPrecompiledContracts(f *testing.F) {
    26  	// Create list of addresses
    27  	var addrs []common.Address
    28  	for k := range allPrecompiles {
    29  		addrs = append(addrs, k)
    30  	}
    31  	f.Fuzz(func(t *testing.T, addr uint8, input []byte) {
    32  		a := addrs[int(addr)%len(addrs)]
    33  		p := allPrecompiles[a]
    34  		gas := p.RequiredGas(input)
    35  		if gas > 10_000_000 {
    36  			return
    37  		}
    38  		inWant := string(input)
    39  		RunPrecompiledContract(p, input, gas, nil)
    40  		if inHave := string(input); inWant != inHave {
    41  			t.Errorf("Precompiled %v modified input data", a)
    42  		}
    43  	})
    44  }