Ethereum: How to test contract with old solidity version in Foundry?

Here is an article with step -by -step instructions on how to test a contract using the version ^0.5.16 in the foundry:

contract test with the old version of reliability in fondai

The foundry is a popular tool for the construction and test of smart contracts. When working with old or outdated versions of reliability, it can be difficult for the tests to work without problems. In this article, we will show you how to test the contract using the ^0.5.16 version in the foundry.

preliminary requirements

Before starting, make sure you have the following:

• Local copy of your Ethereum project

• The compiler is installed (it can be installed using NPM: NPM Install -G SOLC ')

• Installed and set the foundry

Step 1: update the SOLC version

You must update your version of "Furc" to combine the old version used in the contract. Open the terminal or control line and perform:

Bash

SOLC -VERON

''

This will show the current version of "SOLC". Update it to the latest version:

Bash

NPM Instal-Save-Dev Solc@Last

''

Step 2: Create a new FULC compiler

Because Foundra uses "SOLC" under the hood, we must create a new compiler for your project. Start:

Bash

Fulc compiles -everwrite my_contract.sol ^0.5.16 --bin my_contract.bin

''

This will generate a new agreement collected in "My_Contract.bin".

Step 3: Foundry update

Now that we have our old version of reliability, we update the foundry to use a new compiler:

Bash

Foundry -solc =^0.5.16 my_project.json

''

This will apply the SOLC version updated to your project.

Step 4: Test the contract

After updating the foundry and completing the contract, you can test it using "Foundry Compiles:

Bash

Foundry compile my_contract.bin

` ”

The foundry should now be able to successfully complete the contract.

Tips for solving problems

If there are errors during the test process, here are some tips on problem solving:

• Check that the SOLC version is updated to the latest version.

• Check that the foundry has been updated to use the new compiler.

• Make sure the contract is correctly compiled with the old version of reliability.

Application

Testing a contract with an old version of reliability can be demanding, but Foundry makes it easier. According to these steps and solving problems, you should be able to properly test the contract using the ^0.5.16 version in the foundry. Good test!