EVM can't retrieve events from indirect call of a contract

[eduardonunesp]

The issue was reported from a user on Telegram chat, saying that the call from getPastEvents from web3 wasn't working on loom, when there are two contracts: ContractA and ContractB and when ContractA emits an event on ContractB the event wasn't reachable.

contracta.sol

pragma solidity 0.4.24;

interface ContractB {
  function callEvent(uint256 v) external;
}

contract ContractA {
  event ContractAEvent(uint256 v);

  function doEmit(uint256 _v, address _contractBAddr) public {
    emit ContractAEvent(_v);
    ContractB(_contractBAddr).callEvent(_v);
  }
}

contractb.sol

pragma solidity 0.4.24;

contract ContractB {
  event ContractBEvent(uint256 v);

  function callEvent(uint256 _v) public {
    emit ContractBEvent(_v);
  }
}

So testing, like this it works:

let tx = await contractA.methods.doEmit(value, contractB.options.address).send()
t.equal(tx.status, true, `doEmit should return correct status for ${value}`)

contractA.getPastEvents('ContractAEvent', (err: Error, events: any) => {
  t.assert(!err)
  t.assert(events.length > 0, 'should have at least one event')
  const [event] = events
  t.equal(+event.returnValues.v, value, `Should return value ${value}`)
})

But like this isn't works:

contractB.getPastEvents('ContractBEvent', (err: Error, events: any) => {
  t.assert(!err)
  t.assert(events.length > 0, 'Should have at least one event')
  const [event] = events
  t.equal(+event.returnValues.v, value, `Should return value ${value}`)
})

It was tested on ganache and geth and on both it works, however on loom for some reason it fails.

The test is available on loomnetwork/loom-js#89

[Sriep]

This should be fixed for the new JSONRPC endpoints, such as eth_getLogs.

[enlight]

This now works as expected when using the /eth endpoint.