Questions tagged [truffle-test]
The truffle-test tag has no usage guidance.
176
questions
0
votes
0answers
27 views
resolved- uint parameter could not pass as a correctly in truffle test
How can I send a uint parameter value to the contract in truffle?
i have a function that has two uint parameter and I wrote test that function but I guess the uint parameters cannt be sent as a ...
0
votes
1answer
9 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
19 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
20 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
);
...
3
votes
2answers
133 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
45 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
20 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
14 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
54 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
34 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
20 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
13 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
71 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
56 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
63 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
67 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
33 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
39 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
35 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
54 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
54 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
27 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
0answers
17 views
Assertion error running truffle test
I cant 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 name = "Lair ...
0
votes
0answers
17 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 = "...
0
votes
1answer
20 views
Nothing happens whe I run truffle test
I am new to solidity. Maybe I am missing something obvious in the setup. But when I run truffle test, I get nothing, the terminal just stays there forever.
$ truffle test
... and I don't know why, ...
1
vote
1answer
15 views
Different behavior of the same contract between JavaScript and Solidity tests with Truffle
I have a simple contract that functions as a ratekeeper - it is constructed with a capacity and
time_frame (in blocks) parameters and makes sure we never add more than $capacity payments in any given ...
0
votes
0answers
31 views
Different when calling deployed Address and new() contract
I follow the code of MetaCoin project and wonder how different between two types of test:
pragma solidity >=0.4.25 <0.6.0;
import "truffle/Assert.sol";
import "truffle/DeployedAddresses.sol";
...
0
votes
1answer
27 views
truffle test - does not Assert (Erc20, Solidity)
I am probably doing something wrong but can't see what exactly.
Code:
pragma solidity ^0.5.8;
import "truffle/Assert.sol";
contract TestABC {
function totalSupplyTest() public {
bool a ...
-1
votes
2answers
46 views
Help a noob testing: it ' should deposit 1 Ether'
I wanted to revive or refactor this old smart contract as an exercise to learn solidity and js coding. Truffle compiled it and migrated it and it passed the first test (Although I'm not sure if it ...
0
votes
1answer
28 views
Call functions from another account by default in web3
In my truffle tests, I am trying to call a function from an account other than the default account, so not accounts[0] from the below result. web3.eth.defaultAccount doesn't seem to work.
web3.eth....
0
votes
0answers
54 views
Truffle test including mainnet contract - Error: Cannot create instance of Whitelist; no code at address
Problem with the error Error: Cannot create instance of Whitelist; no code at address 0x6198149b79AFE8114dc07b46A01d94a6af304ED9
How do I have to setup truffle so that I can run a test which includes ...
0
votes
0answers
57 views
Truffle how to test with reference to mainnet smart contract - Error: while migrating VM Exception while processing transaction: revert
I would like to run a truffle test on a smart contract that includes a smart contract address deployed on mainnet. However, this results in the following error
Error: Error: Error: while migrating ...
4
votes
0answers
108 views
`eth_getTransactionReceipt` returns the transaction hash not the receipt
I use sol-coverage in a truffle project. Ganache is my development blockchain. I have a lot of tests which end up doing more than a few thousand JSON RPC calls.
Due to unbeknownst reasons, the ...
1
vote
1answer
492 views
Simple Truffle tests timeout “before all” hook: prepare suite
I'm trying to write my first tests for truffle, but I run in a timeout each time I want to execute the tests.
Error: Timeout of 120000ms exceeded. For async tests and hooks, ensure "done()" is ...
2
votes
2answers
85 views
How do I specify the network ID in the config file when migrating/testing contracts on my local ganache?
So my issue is when I run the compile and then migrate commands everything goes smooth, then I try to test by running the truffle test command and it gives me an error saying 'Error: The network id ...
1
vote
0answers
74 views
What is the easiest way to write truffle tests in typescript?
I read about Typechain, but the configuration is rather verbose and generally feels like a very custom solution:
Everytime you change contracts you need to run yarn generate.
2
votes
1answer
65 views
How to trace the line where a tx failed in truffle tests?
I know about 0x's sol-compiler and sol-trace. I used them before and they do exactly what I'm looking for, but these modules bring significant overhead when used with truffle. Check out this file to ...
-1
votes
2answers
113 views
Truffle uint test script not updating storage variable, and strange behaviour
while testing I got a strange behavior of truffle, please see the subject smart contract code first
uint256 public burningRatePercent = 50;
function onlyOwnerSetBurningRate(uint256 ...
1
vote
1answer
21 views
Does truffle test mimic the exact network state of an actual migration?
I've defined a truffle migration step as follows:
Deploy my 'main' smart contract, nothing out of the ordinary:
var UniversityVoting = artifacts.require('./UniversityVoting.sol');
module....
0
votes
1answer
56 views
How does a transaction verified with Truffle test?
I'm a new to Ethereum and Solidity, and I don't understand how Truffle executes transaction calls.
From what I learned and understood, if I try to use a contract method which changes the contract's ...
1
vote
1answer
179 views
Error when testing the contract
ApprovalContract.sol
pragma solidity ^0.5.1;
contract ApprovalContract{
address public sender;
address payable public reciever;
address public constant approver=...
0
votes
1answer
57 views
totalSupply doesn't pass test
I'm starting programming. I wanted to do my first contract and I assigned totalSupply to 1000000.
pragma solidity ^0.5.8;
/**
* The DappToken
contract Constructor
Set the total number of tokens
...
1
vote
2answers
37 views
Contract.deployed() does not work as expected
I use Truffle to test a contract. When i use Contract.deployed() and i fetch address, for example :
In a first test, the contract's address is
0x07D899846146b3503dE9D9Dc36B94C2e428eA434
In a second ...
1
vote
3answers
674 views
Testing sha256(abi.encodePacked(_argument))
When trying to test a smart contract that uses
sha256(abi.encodePacked(_myargument))
I don't get the same hash on truffle !
I tried both
web3.utils.keccak256('_myargument')
web3.utils.sha3('...
3
votes
2answers
160 views
How to test events that were sent by inner transaction / delegate call?
Usually, using truffle I can check for events like this:
let { logs } = await myContract.doSomethingImportant( xxx );
// 1500 tokens are expected to get
expectEvent.inLogs(logs, '...
1
vote
1answer
33 views
ERC20 RefundableCrowdsale
I have a crowdsale contract that inherits RefundableCrowdsale.sol from OpenZeppelin. I was using their v1.10.0 initially, but now revamping it using v1.12.0.
contract TestTokenCrowdsale is Crowdsale,...
0
votes
1answer
53 views
truffle won't run tests while initializing a global contract instance
I am testing my smart contract in truffle. I need to declare some global variables hence I did so outside 'it'.
I also tried declaring a global contract instance that I can use in all test cases.
...
0
votes
1answer
118 views
truffle testing enum
I am trying to test an enum value from a test. This is simplified version of the contract:
pragma solidity >=0.5.0 <0.7.0;
contract Foo {
enum State {
StateA,
StateB
}
State ...
1
vote
1answer
52 views
Event declaration which fix my tests
I'm going to try to put this in simple. This is the code of my contract:
pragma solidity ^0.5.0;
contract Lottery {
address public manager;
address[] public players;
event Deposit(...
1
vote
3answers
128 views
A single exception in Truffle test causes every other test cases to fail
I'm making test script for my contract and it looks likes
contract('...', async () => {
let token = null;
before('deploy', async () => {
token = await MyContract.new(...);
})...
