Questions tagged [mocha]

Mocha is a JavaScript test framework for Node.js programs.

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3
votes
0answers
365 views

Unit testing with chai-as-promised: how to test for two possible errors with rejectedWith()?

I am new to asking questions here and I am sorry if my question is not correctly asked! I am currently testing some smart contracts with truffle and have some problems with testing for exceptions. ...
2
votes
1answer
542 views

Modifier causing “invalid opcode” in TestRPC

I have a token and crowdfund that works fine, except in tests. I can use all the methods, but I get invalid opcode on any of them that have a call to another contract that has a modifier on that ...
13
votes
4answers
8k views

“SyntaxError: Unexpected token import” on truffle test

I get an "SyntaxError: Unexpected token import" error when I do 'truffle test'. I am trying to import a function declared in another file into the java-script test file. I have been searching about ...
2
votes
2answers
238 views

How would one use stubs for unit testing solidity code?

Given some contract A, that depends on another contract B, what would be the best way to unit test functions from A without inadvertently testing code from B. Normally, we could use stubs to return ...
12
votes
4answers
3k views

How to set the timeout for truffle test's before block?

I'm running my tests on a private chain and some of them times out: 1) "before all" hook: Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning ...
4
votes
1answer
589 views

Truffle: How to detect test environment while running smart contract test cases?

I'm trying to run some test cases in Travis CI using truffle but I want some of them not to run if the test environment(localhost:8545) is running via "testrpc" because some of my test cases only ...
1
vote
0answers
81 views

how to use the contract instance for multiple functions?

I am trying to test the exchange where two types of tokens are trading. I want to set those tokens in exchange and trying to trade them between two accounts, but i am unable to get the updated ...
5
votes
2answers
2k views

Truffle test with async/await

Has anyone got Truffle tests to work with async/await? My sample code for testing require('babel-polyfill'); var ERCToken = artifacts.require("./ERCToken.sol"); var Proxy = artifacts.require("./...
4
votes
1answer
650 views

Is the address used to deploy contracts in JS tests in truffle always accounts[0]

I've noticed that the deploying address in my truffle .js tests is equal to the address at accounts[0]. Since it's important to me to test the ownership of a contract, I'd like to know if it's ...
5
votes
3answers
1k views

How to properly catch events using MochaJs

Good day, I'm using mochajs to test my Solidity code using truffle and testrpc. In my contract I got the following event and function: contract store{ event MoneyIn (address _from, uint256 ...
5
votes
2answers
258 views

Sending ethers with mocha.js and truffle might result in larger sums than intended

Good day, I have a contract General and a library GenLib. library GenLib{ event MoneyIn (address _from, uint256 _amount); function moneyIn() { MoneyIn(msg.sender, msg.value); <- ...

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