I'm doing testing of smart contract when I try to transfer token using https://remix.ethereum.org. That was working fine. But now I want to write its test case but that is not working fine and not transferring the tokens. Code:

 it('should properly [transfer] token', async function() {
    let recipient = "0xe0f5206bbd039e7b0592d8918820024e2a7437b9";
    let tokenWei = 1000000;
    let status = await contract.methods.transfer(recipient, tokenWei).call();

    let ownerBalance = await contract.methods.balanceOf(owner).call();
    let recipientBalance = await contract.methods.balanceOf("0xe0f5206bbd039e7b0592d8918820024e2a7437b9").call();
    console.log("Balance:"+ownerBalance +'----'+recipientBalance);

Output is like this.

status = true

These balaces are exactly same as before mean no deduction from owner account and no addition in recipient account.

Any guidance/help will be appreciated.


  • Wie sendet man mit terminal? Not install senden wie? Apr 9 '18 at 9:05
  • Hi and welcome to Ethereum StackExchange. Please speak English so users could understand you. Apr 9 '18 at 10:38

You must to use send instead of call, since you're changing the status.

contract.methods.transfer(recipient, tokenWei).send({from: '0x123...'})
  • Thank you, balances are showing correctly as 1704243055-101000000 But when I tried another test case below of the test case that will show again starting assigned balance in owner account Code it('Owner balance', async function() { let Balance = await contract.methods.balanceOf(owner).call(); Balance = Balance.toString(); console.log(Balance); }) The output should be: 1704243055 But showing: 1705243055 So my question is there any scope issue why balance is again showing as assigned before in new test case or I need to write down one test case as I mentioned in question? Apr 9 '18 at 8:06
  • 1
    sounds strange. I don't have an answer on this it should work properly. are you using ganache-cli ?
    – mirg
    Apr 9 '18 at 8:59
  • Yes, I am using ganache-cli Apr 9 '18 at 10:13
  • Do you have an example of test cases with code? Please provide. Apr 9 '18 at 10:37
  • you can search on github something. es: github.com/gnosis/gnosis-contracts/tree/master/test/javascript
    – mirg
    Apr 9 '18 at 10:39

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