Avoid "out of gas" when calling a view function using truffle

Question

I have a rather computationally expensive view function on my smart contract, which works with no problem on rinkeby (calling it from etherscan).

However, deploying the contract into a local chain (on ganache) and calling the function from a truffle test file, I get an out of gas error. Namely:

Error: Returned error: VM Exception while processing transaction: out of gas

Here is the code I'm using for the test:

const { assert } = require("chai")
require("chai").use(require("chai-as-promised")).should()

const MyContract = artifacts.require("./MyContract.sol");

contract("MyContract", function () {
  let contract
  before(async () => { contract = await MyContract.deployed() })

  describe('main stuffs', () => {
    it('returns SVG', async () => {
      const svg = await contract.getTOKEN(1654673700);
    })
  })
})

Is there a way to solve this issue?

I really would like to have a setup where I can test my smart contracts (even computationally expensive ones) without having to deploy to rinkeby and manually call the functions.

Answer 1

If you have a truffle-config.js like this, put in a correct amount of gas (see the gas cost on etherscan and then put a little bit more in your truffle-config.js):

rinkeby: {
    provider: ...
 
     
    **gas: 3500000,** 
     
    gasPrice: 3000000000,// 3 gwei, kovan.etherscan.io/blocks displays average is 2.5gwei 
    network_id: 4,
  }