如何在 Remix 中测试 Solidity-By-Example Mapping 智能合约？

Question

我想在 Remix 中测试以下代码。但是程序是什么？

我应该在标记为 set 的函数的输入字段中输入什么？

Mapping.sol

// https://solidity-by-example.org/mapping
// Mapping
// Maps are created with the syntax mapping(keyType => valueType).
// The keyType can be any built-in value type, bytes, string, or any contract.
// valueType can be any type including another mapping or an array.
// Mappings are not iterable.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

contract Mapping {
    // Mapping from address to uint
    mapping(address => uint) public myMap;

    function get(address _addr) public view returns (uint) {
        // Mapping always returns a value.
        // If the value was never set, it will return the default value.
        return myMap[_addr];
    }

    function set(address _addr, uint _i) public {
        // Update the value at this address
        myMap[_addr] = _i;
    }

    function remove(address _addr) public {
        // Reset the value to the default value.
        delete myMap[_addr];
    }
}

contract NestedMapping {
    // Nested mapping (mapping from address to another mapping)
    mapping(address => mapping(uint => bool)) public nested;

    function get(address _addr1, uint _i) public view returns (bool) {
        // You can get values from a nested mapping
        // even when it is not initialized
        return nested[_addr1][_i];
    }

    function set(
        address _addr1,
        uint _i,
        bool _boo
    ) public {
        nested[_addr1][_i] = _boo;
    }

    function remove(address _addr1, uint _i) public {
        delete nested[_addr1][_i];
    }
}

此代码来自 Solidity by Example。

当我在 Remix 上实现它时，我得到以下屏幕。

此时，为了测试它，我想我需要将一个 address 映射到一个 uint256，所以我在 集旁边的字段中输入以下内容 按钮：

["0xcf646ed6e21fd0756ec45a6be5e1057fc24a1b8308175ff0b9f97f565b594eb3", 7439]

地址的值是随机生成的哈希值（我怀疑随机哈希值可能有问题？）

我希望看到 set 函数呈现值 7439。但是，它会抛出以下错误：

transact to Mapping.set errored: Error encoding arguments: Error: invalid address (argument="address", value=["0xcf646ed6e21fd0756ec45a6be5e1057fc24a1b8308175ff0b9f97f565b594eb3",7439], code=INVALID_ARGUMENT, version=address/5.5.0) (argument=null, value=["0xcf646ed6e21fd0756ec45a6be5e1057fc24a1b8308175ff0b9f97f565b594eb3",7439], code=INVALID_ARGUMENT, version=abi/5.5.0)

我做错了什么？

Answer 1

您生成了一个有效地址格式的随机 SHA-256，但它不作为任何帐户存在于 Remix 的 browser-based（Javascript 虚拟机）链上。如果是这样，你可能只是幸运。

如果您想使用 browser-based VM 链上确实存在的有效地址，请复制并使用帐户部分中的地址。

如何在 Remix 中测试 Solidity-By-Example Mapping 智能合约？

How to test the Solidity-By-Example Mapping smart contract in Remix?

testing

ethereum

solidity

smartcontracts

remix

Mapping.sol