Add --show-events flag to test command

[p14n]

Flag to show events when tests are passing described in waffle 186.

truffle test --show-events

[robertkeizer]

I'd love to be able to use this.

[kangarang]

bump!

independently i implemented a similar hack in my code, and i am loving it. effectively it acts as a console.log() in solidity. i just emit a custom event with a specified value whenever i wanna inspect a value while testing -- note: the transaction must succeed to see the event log. it's especially helpful when working with private functions and contracts that send messages to one another.

event _UintLog(string name, uint value);

function resolveChallenge(uint _challengeID) private {
	// grab values from struct in voting contract
    var (,,,votesFor, votesAgainst) = voting.pollMap(_challengeID);

	emit _UintLog("votesFor", votesFor);
	emit _UintLog("votesAgainst", votesAgainst);
	
	// ...
}

Events emitted during test:
    ---------------------------

    # ... other events
    _UintLog(name: votesFor, value: 10)
	_UintLog(name: votesAgainst, value: 15)

[syndac]

I feel dumb (new to git). But how do I implement this? I have the latest truffle using npm install -g truffle I'm using truffle test --show-events and not getting any events other than those that failed.