[Ethereum] How to run truffle tests on testnet

testnetstruffle

My truffle tests use several accounts and send tokens between them, so how would I run such a truffle test on testnet, e.g. Rinkeby?

Best Answer

The procedure is the same like testing locally with a dev node or ganache/testrpc.

Basically, you will have to setup a local node synced with Rinkeby. Moreover, you'll have to create as many account as you need for your tests and load them with some ether, if they're going to create transactions.

In truffle.js you can also specify different networks. Using the --network <NETWORKNAME> parameter, you can switch between them. E.g. truffle test --network rinkeby.

Related Solutions

[Ethereum] How to expose accounts in truffle

In the truffle console you can access them with web3.eth.getBalance(web3.eth.accounts[0]), just replace the zero.

In a Javascript file you can easily access them as showed in the basic metacoin test:

var MetaCoin = artifacts.require("./MetaCoin.sol");

contract('MetaCoin', function(accounts) {
  it("should put 10000 MetaCoin in the first account", function() {
    return MetaCoin.deployed().then(function(instance) {
      return instance.getBalance.call(accounts[0]);
    }).then(function(balance) {
      assert.equal(balance.valueOf(), 10000, "10000 wasn't in the first account");
    });
  });
});

In principle the contract doesn't know on which network it's deployed, therefore I'm not sure that you can do it from within the solidity contract.

Run hardhat tests on a testnet

Make sure your accounts have balances. And you can config the timeout depends on each network by adding a timeout property in milliseconds (https://hardhat.org/config/#json-rpc-based-networks)

example:

rinkeby: {
  url: INFURA_URL,
  accounts: [`0x${owner}`, `0x${alice}`, `0x${bob}`],
  timeout: 60000
}

Best Answer

Related Solutions

[Ethereum] How to expose accounts in truffle

Run hardhat tests on a testnet

Related Topic