Truffle Testing – How to Get More Than 10 Accounts in Truffle Tests

gas-limittestingtruffletruffle-test

I want to test gas limits of the block.

Currently in my tests:

console.log(accounts);
console.log(accounts.length);

I have 10 accounts, what to do if I want more?

Related: https://github.com/trufflesuite/truffle/issues/771

Best Answer

Truffle tests run ganache-cli behind the scene in default mode (10 accounts).

But if you run yourself ganache-cli with x accounts generated, you will have access to all of these accounts from your Truffle test.

Run Ganache-cli

$ ganache-cli -a 15
Ganache CLI v6.1.0 (ganache-core: 2.1.0)

Available Accounts
==================
(0) 0x0db5a29ba9c8ba9828d762361100eee40c27d534
(1) 0x0ee6079af81bde6f26668acb3ebe88da62688746
(2) 0xf7a97a29e36ab303c7427fdbc11e47442fc5e0e6
(3) 0x062e63e393e6fa22cac0952dae11cb95347a3c41
(4) 0xcc10e5fc80ca5245f8e88f07c8f25956166fab97
(5) 0xc251a8a9920544e8c0fbd8aa65857ec1db00f2dd
(6) 0x06022629d7fd960585d3b33f1d53c86a969a2493
(7) 0x962c196fde6998744c69939213d47eee071d6b0a
(8) 0x6ea526f5b81822cbfe166e4fbba2752a42597d04
(9) 0xc11398eff1f1382074790eeb80053e09b15ef4cf
(10) 0x330997e70b83f1a562490fcaa5996314fa5a971a
(11) 0x30af8cdd1bac5ad8ae0e71a15aae563fe046a259
(12) 0x98544babd863f5ce635453728aee5e1e22362782
(13) 0x0751f545185fae1a882c311fcc3e8c00fb206fba
(14) 0xb2ed8ebb091c17c21b4c6cd1ef768b66c31d15bc

Private Keys
==================
(0) 91eb77d7aed3f81a9f981ca9e6fa1228e95cbd41012eb730c6e973ebb62a066f
(1) 051c7b1b210394fa863b760a406d56e69c7724d787a41927ac7f4a1d012b1185
(2) a7f19b34d12427612b25856f1a3f9727c464864ad5f63bba9b305840735bdc92
(3) a9b6f09091b9daa9d7caae2c018b19ab921e98a1106239b2a58a6bd1a4abc943
(4) 69a0315f0a6932ca52d5b1ad9ce31b2fef7de658f8da625a6d97f4dbb3ba22c1
(5) 2c06b48c205efccc3506430212630a11bcc99cad1994452898e5df63985eda10
(6) d890fedd404c6f49daf4be91cd720df22786e1d35d579b8372cc531eed80a267
(7) 9da43e9603043299cd6c5aecec69b7713342496f3465caaadbee5db955f18010
(8) 53a2a4124387132ceae955edb80f13aa549f2e956d3f8aae0383412a3c765a93
(9) 1803ea57835da6f03f8b43458482f65f280600c278947fe0eaf78c5d7d260c81
(10) b13f2706716d269a9639f2eb99d38ba8aaef0e210d1b35a2e40e3e8b62ab76f9
(11) 6ea3ff0add2ecee82d3ba59968d4a62bb7345f908a126a8827f6f1f323b83d42
(12) e5fdc32e5d479f9ad7cbe140cc0f28c89fc6b6d5b9d36f2538fd674348a76ca0
(13) 35236c790a4477e16e90dbd1a6cf34979fbd3ccedb0f02992125a29b22ec50fe
(14) 3866d014b5d0fc7786326fd1eb263ae99a78e415ced643a6c477c0990054f7b4

HD Wallet
==================
Mnemonic:      solar hurry climb pass about loud siren bean close link tower all
Base HD Path:  m/44'/60'/0'/0/{account_index}

Listening on localhost:8545

Execute the tests

$ truffle test
Using network 'development'.

[ '0x0db5a29ba9c8ba9828d762361100eee40c27d534',
  '0x0ee6079af81bde6f26668acb3ebe88da62688746',
  '0xf7a97a29e36ab303c7427fdbc11e47442fc5e0e6',
  '0x062e63e393e6fa22cac0952dae11cb95347a3c41',
  '0xcc10e5fc80ca5245f8e88f07c8f25956166fab97',
  '0xc251a8a9920544e8c0fbd8aa65857ec1db00f2dd',
  '0x06022629d7fd960585d3b33f1d53c86a969a2493',
  '0x962c196fde6998744c69939213d47eee071d6b0a',
  '0x6ea526f5b81822cbfe166e4fbba2752a42597d04',
  '0xc11398eff1f1382074790eeb80053e09b15ef4cf',
  '0x330997e70b83f1a562490fcaa5996314fa5a971a',
  '0x30af8cdd1bac5ad8ae0e71a15aae563fe046a259',
  '0x98544babd863f5ce635453728aee5e1e22362782',
  '0x0751f545185fae1a882c311fcc3e8c00fb206fba',
  '0xb2ed8ebb091c17c21b4c6cd1ef768b66c31d15bc' ]
length: 15

EDIT: Configuration details

$ cat truffle.js 
module.exports = {
  networks: {
    development: {
      host: "localhost",
      port: 8545,
      network_id: "*" // Match any network id
    }
  }
};

$ cat test/test.js 
var Contract = artifacts.require("Weechain.sol");

contract('Contract', function(accounts) {
    console.log(accounts);
    console.log("length: " + accounts.length);
});

$ truffle version
Truffle v4.1.5 (core: 4.1.5)
Solidity v0.4.21 (solc-js)

$ ganache-cli version
Ganache CLI v6.1.0 (ganache-core: 2.1.0)
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