Questions tagged [truffle-test]
The truffle-test tag has no usage guidance.
201
questions
0
votes
0answers
14 views
Truffle Test Error Revert in Contract Factory
I'm trying to create a contract factory that creates "Oracles". Oracles have state variables that are initialized in the contract constructor, and I'm trying to use Truffle Test to verify ...
2
votes
0answers
29 views
How to simulate time increase in Remix IDE?
In my JavaScript tests:
module.exports = {
increaseTime: (duration) => {
const id = Date.now();
return new Promise((resolve, reject) => {
web3.currentProvider.send({
...
0
votes
0answers
22 views
Truffle - multiple transactions per block
i try to simulate a large transaction load and therefore want to execute multiple transactions in a truffle test. I changed the block-time to five seconds and generate the transactions, but only one ...
0
votes
0answers
12 views
Transaction Callback Function Doesn't Run
I'm running the following code as part of a truffle test:
electionController = ElectionController.new(districtsNo,districtFactory.address,voteTokenFactory.address);
function createVoteToken(...
0
votes
0answers
14 views
SyntaxError when setting instance of deployed contract to token variable
I'm following this tutorial: https://www.youtube.com/watch?v=044h0ZI-fDI
At 22:45, the following command is run: DappToken.deployed().then(function(i){token=i;})
In the video, after this command is ...
1
vote
0answers
69 views
Conflicting solc versions on Truffle-test
I'm developing some smart contracts sing solc 0.7.0. I'm able to successfully compile and deploy the contracts, but when I try to run $truffle test I get the following error:
Using network '...
0
votes
1answer
21 views
Truffle test. Convert '0x0000000000000000' to zero. Assert it doesn't exist [duplicate]
I am writing a truffle javascript test and I need to test if a key in a mapping was deleted. After deleting it, its values are equal to '0x0000000...' . How can I test in a truffle javascript test ...
1
vote
0answers
59 views
Truffle test: how to get the block number of deployed contract?
In my test I would like to get the block or block number of when the contract was deployed.
const instance = await MyContract.deployed()
const contractDeploymentBlockNumber = await instance.?
0
votes
0answers
20 views
truffle solidity unit test modifiers: How do you test modifiers dependent on the sender account?
QUESTION: How do you write unit test code that would test that a non-owner can't execute a function modified by a requirement that they be the owner using in solidity and truffle?
I am trying to write ...
1
vote
0answers
27 views
Is Truffle test useful?
Hi there I came across "Truffle test". As a developer I feel like it's better to test code on remix for unit testing rather than wasting time on writing truffle test in javascript. What do ...
0
votes
0answers
36 views
Testing using Truffle unbox: Assert.equal error
I ran the pet shop project. It uses "truffle unbox". The petshop project at:
Petshop project using Assert.equal without any error
is able to execute Assert.equal command but when I am using ...
0
votes
0answers
37 views
Problem with Assert.equal
I am compiling the code available at using "truffle test":
https://michalzalecki.com/ethereum-test-driven-introduction-to-solidity/
pragma solidity 0.5.16;
import "truffle/Assert.sol&...
0
votes
0answers
45 views
Truffle test stuck when testing with geth endpoint
I tried to test the truffle suite official metacoin example using truffle test. I opened a local private chain using geth with http rpc service open at localhost:8545. My truffle-config.js file is ...
0
votes
0answers
31 views
truffle test is showing error after running on truffle(develop) console
I am using truffle in windows and everything went well. I've successfully set up development network. But when I try to run test from the truffle(develop) console this error shows -
TypeError [...
0
votes
1answer
34 views
How to use truffle-assertions to verify parameters of an emit?
I have not been able to find any resources with usage instruction besides github and blog post by the author
On github an example is show as such:
truffleAssert.eventEmitted(result, 'TestEvent', (...
0
votes
2answers
45 views
Signature test failed at Truffle js
I'm trying to test validAddress function from my contract ValidationUser, using truffle and test with JS. I checked the V value from the signature and its 27,28 so it is not the problem.
Also, I have ...
1
vote
0answers
32 views
Using privateFor in truffle test
Using truffle , I am able to deploy private smart contracts using privateFor clause. However, I am not able to use in truffle test. I get the following error. Is there a way we can use privateFor ?
...
1
vote
1answer
44 views
How to call an overloaded function in Truffle with ABIEncoderV2?
How do you call an overloaded function in Truffle when passing a struct using pragma experimental ABIEncoderV2;?
contract MyContract {
struct MyStruct {
address param1;
address param2;
...
0
votes
1answer
37 views
address(this) in solidity is returning wrong contract address
This is my cantract code which I was using in truffle
pragma solidity 0.5.16;
contract Test {
function getAdd() public view returns(address){
address add = address(this);
return ...
1
vote
1answer
81 views
Sending transaction from different addresses in truffle test case
I am having an admin in my contract who can do certain things. Here is the contract
function changeAdmin(address admin_) public {
if (msg.sender != admin) revert();
potentialAdmin = admin_;
}...
0
votes
1answer
94 views
What are the accounts generated by Truffle and Ganache? How is the Truffle migration done eactly?
I have a few question regarding Truffle, Ganache, and testing:
When I execute truffle develop and get 10 accounts and 10 private keys, do those represent my accounts in my wallet or other users? For ...
0
votes
0answers
57 views
Truffle Error: invalid argument 0: hex string without 0x prefix
I'm trying to deploy and test the smart contracts on the Goerli network using Truffle. While migrating getting below error.
Contract: Simple Storage Test suite
Simple Storage Set
...
0
votes
2answers
67 views
How to specify custom test directory path in truffle-config.js
How do I specify a custom test directory path in truffle-config.js? My test directory is not present at the same level as truffle-config.js, it is residing in a different directory.
Truffle has ...
0
votes
1answer
56 views
How can I make sense of solidity-coverage reports
I'm trying to check the coverage of an entire ERC20 set of openzeppelin tests. I'm using openzeppelin/test-environment and solidity-coverage v0.7.4 as plugins in truffle. The tests went fine but I get ...
0
votes
0answers
27 views
How can I test the placeBet() and settleBet() in ethereum hashdice contracts?
I would like to test the smart contract of hashdice using remix IDE, and using truffle. I wonder how to give the arguments for testing.
function placeBet(uint _betMask, uint _modulo, uint _commit, ...
0
votes
1answer
55 views
Solidity test fails when testing onlyOwner functions
I have a contract where some functions can be called only by the owner of the contract and I want to test it with a solidity test in truffle. The contract looks like this:
contract owned {
...
0
votes
0answers
89 views
truffle test fails with `Error: Callback was already called.`
I have a single .sol contract that includes 2 libraries, 1 interface and 3 contracts A, B and C such that B is A and C is A, B. The contract C is the one I am interested in as it includes all the ...
0
votes
1answer
59 views
Truffle Test: Setting blockTime
I'm using Truffle and I want to increase the blocktime to mimic that of the mainnet when i run my tests.
As i understand it, Truffle has already instantiated a web3 instance that's ready to use so i ...
1
vote
1answer
54 views
TypeError: tests is not a function Error in Truffle
I am following an online tutorial, doing almost exactly like the instructor.
I have the following error every time I try to run 'truffle test'
my truffle-config file:
module.exports = {
// See &...
1
vote
1answer
56 views
Testing solidity transfer method not transferring tokens
I have this solidity contract:
contract Token {
mapping(address => uint256) public balanceOf;
event Transfer(
address indexed _from,
address indexed _to,
uint256 _value
);
...
4
votes
2answers
187 views
How to enhance list of accounts for the Truffle tests to run against Ropsten testnet
I am working on the my contracts testing scripts. But I want to run tests not on the local TestRPC or Ganache but in the Ropsten testnet. How can I predefine a list of accounts (private keys and ...
0
votes
1answer
291 views
Error : Number can only safely store up to 53 bits
Hi I am trying to run the following tests
var chai = require("chai");
var chaiAsPromised = require("chai-as-promised");
chai.use(chaiAsPromised);
var expect = chai.expect;
var Bet = artifacts....
1
vote
1answer
44 views
How to use solidity library with truffle
I'm using truffle V5.1.13 and when I run truffle test the res variable contains a transaction receipt rather than the expected 2. I notice if I remove everything that has to do with the library things ...
0
votes
0answers
18 views
I got the error when I do 'truffle test' in Truffle tutorial that pet-shop-tutorial
I'm doing truffle tutorial the pet-shop-tutorial but when I typed truffle test in cmd, I got the error. Here is the error message.
I have no idea how I can fix it and where should I check.
Please ...
0
votes
1answer
113 views
Cannot create contract from another contract - truffle and ganache
I'm trying to write a test with ganache and truffle to create a contract instance from another contract.
Everything works in Remix but it doesn't in ganache. This is the code
const assert = require('...
0
votes
1answer
59 views
Unable to filter events with specific values of indexed parameters
I am currently trying to test a smart contract using the truffle suit ( with 'truffle test'). My contract is of a simple ERC20 token which includes the standard Transfer event:
event Transfer(address ...
0
votes
0answers
26 views
How to assign event output to variable when testing?
I'm using Truffle test(chai/mocha) and openzeppelin-test-helpers.
Can anyone help me about how to assign values from event to variables in the above testing environment?
0
votes
1answer
35 views
Truffle test: “Cannot read property 'gasUsed' of null” error. Truffle migrate works fine
Whenever I try and do truffle test I get the error
Cannot read property 'gasUsed' of null
But truffle migrate --reset works fine
More confusingly, to rule out something in one of my tests that is ...
1
vote
3answers
241 views
Test using async/await in truffle not working
I am using node v12.13.1, truffle@5.1.8 and ubuntu 18.04 and running the test using documentation of async/await.
https://www.trufflesuite.com/docs/truffle/testing/writing-tests-in-javascript#using-...
0
votes
1answer
274 views
TypeError: balance.toNumber is not a function
I need check that token has no balance when selfDestruct was called, but shows an error that balance.toNumber is not a function in the test file.
DappTokenSale.sol
function endSale() public {
//...
0
votes
0answers
194 views
Mocha timeout when running truffle test. Works fine on ganache, not on public networks
This is the error I get when running truffle test --network kovan:
1) "before all" hook: prepare suite
Error: Timeout of 120000ms exceeded. For async tests and hooks, ensure "done()" is called; if ...
4
votes
3answers
87 views
I got this error during migration in truffle. : ParserError: Expected '(' but got identifier
This is my smartcontract code
pragma solidity ^0.5.0;
contract DappToken{
uint256 public totalSupply;
constructor DappToken() public{
totalSupply = 10000;
}
}
This is code for ...
2
votes
1answer
52 views
Check emitted event with BN
I'm currently testing events that include numeric values:
const level = new BN(1);
truffleAssert.eventEmitted(tx, 'EventName', {level});
As you can see, the level variable is a BN, and holds the ...
1
vote
1answer
69 views
How do I pass a function pointer to a contract method from a unit test?
I'm getting this error:
Error: invalid type (arg="type", value="function")
when trying to call this method on the contract IntOption:
function create(
address target,
string memory name,
...
1
vote
2answers
47 views
No events where emmited. Why?
This is not a duplicate question. The other one doesn't answer the problem in any way. Can anyone explain to me why do I get No Events where emmited when running truffle test? Ganache is listening in ...
0
votes
1answer
220 views
Truffle js test a call with arguments
I am trying to testa a smart contract function that receives an arg. I'm using truffle javascript tests, this is the smart contract function, very simple:
function addExam(string memory hash) public ...
0
votes
1answer
97 views
Truffle. Test .call() args . Error: invalid string value (…) at PromiEvent
I have a js truffle test:
it("should add an exam to the exams list", async () => {
// This should test the complete functionality
let hash_test = "fB03aA5E2E71De1470ae2";
let instance =...
1
vote
1answer
54 views
Solidity. Truffle test not passing “expected { _events: {},…” to equal
I can't get a test to pass, for me it is very clear but I am missing something obvious:
This is the smart contract:
function getContractOwner() public pure returns (string memory ...
0
votes
2answers
71 views
Assertion error running truffle test
I can't seem to understand where this error comes from. Maybe someone can help
My token solidity file :
pragma solidity >=0.4.2 <0.6.0;
contract LairToken {
//Name
string public ...
0
votes
0answers
23 views
Truffle test passing when it should not
I have this test, it clearly shouldn't pass:
contract("Exams", function(accounts) {
it("should keep the contract owner", function() {
// var expectedValue = "...
