Questions tagged [truffle-test]
The truffle-test tag has no usage guidance.
148
questions
0
votes
1answer
16 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
22 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
31 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 ...
3
votes
0answers
33 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
122 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 ...
1
vote
2answers
25 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
46 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
43 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
86 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
17 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
30 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
99 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
46 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
35 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
173 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
80 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
27 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
25 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
43 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
42 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
91 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(...);
})...
1
vote
1answer
184 views
Which network does truffle use for testing?
I have a network 'foo' that is configured inside truffle.js. Running my tests works just fine
truffle test --network foo ./test/*.js
then I realized I forgot to start 'foo'.
To confirm this running ...
0
votes
2answers
264 views
invalid number value (arg=“_goal”, coderType=“uint256”, value=2000000000000000000)
i am following a tutorial from here. And upon running truffle test. It produces following error.
2_HashnodeCrowdsale.js
======================
Deploying 'HashnodeCrowdsale'
------...
1
vote
1answer
254 views
“Callback was already called” during truffle test using a solidity testfile
I'm creating a contract/token which extends the openzeppelin ERC20.sol and Ownable.sol.
My contract has no own logic yet and looks like this:
pragma solidity ^0.5.2;
import "../node_modules/...
0
votes
0answers
15 views
Solidity: (why) is it considered an anti-pattern to inherit a contract in a truffle test?
There are some functions I'd like to expose on my contract but only for testing purposes. It seems reasonable to specify them with a visibility modifier of internal and have the test contract inherit ...
0
votes
0answers
176 views
Truffle.js file is not created with truffle init command
I have run the truffle init command successfully with creating the following directories and files such as contracts, migrations, test, and truffle-config.js but the one file is missing as truffle.js? ...
1
vote
2answers
93 views
How use Truffle Framework [closed]
Anyone please help me to understand what is exactly Truffle & Ganache ?
How to install & use Truffle ?
Please reply who are know this.
0
votes
0answers
133 views
TypeError: Member “equal” not found or not visible after argument-dependent lookup in type(library Assert)
Truffle v5.0.8 (core: 5.0.8)
Solidity v0.5.0 (solc-js)
Node v10.13.0
Web3.js v1.0.0-beta.37
Assert.equal worked in Truffle 4.x.
pragma solidity >=0.4.21 <0.6.0;
import "truffle/Assert.sol";
...
0
votes
1answer
77 views
How to test kill function including selfdestruct()?
there.
I'm coding kill function below:
function kill() public onlyOwner returns (bool) {
selfdestruct(msg.sender);
return true;
}
and my unit test code:
function testOwnerCanKillContract()...
0
votes
1answer
109 views
Truffle, getPastEvents synchronously
I try to check that a total of 4 events have been emitted by my contract instance. Next code will fail in the assert.equal line since getPastEvents will process the events in a callback and so the ...
3
votes
2answers
188 views
Truffle Test Issue With `address payable` and Compiler Version
I am trying to run truffle test on an old contract which was written using pragma solidity 0.4.24;. While I am able to deploy the contracts using truffle migrate, I get the following error when ...
0
votes
1answer
27 views
Cannot retrieve data from smartcontract during tests
I am writing truffle tests for my smart contract solidity version 0.4.24. The tests are emitting events to write data to memory through smart contract. But I am unable to retrieve data from functions.
...
0
votes
0answers
51 views
TypeError and ReferenceError in truffle test
Im newbie and doing an exercise Im having this errors at truffle testing:
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
...
0
votes
1answer
168 views
truffle test: SyntaxError: missing ) after argument list [closed]
truffle test
Using network 'development'.
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
/home/ubuntutest/proyectoico/test/...
1
vote
2answers
58 views
Trying to test the contracts fully
truffle(develop)> version
Truffle v5.0.5 (core: 5.0.5)
Solidity v0.5.0 (solc-js)
Node v10.15.1
const ApprovalContracts = artifacts.require('../../contracts/ApprovalContracts.sol');
contract ('...
0
votes
1answer
70 views
Truffle - how to share variables and functions between test files? [closed]
I have files in Test directory, each one performs different test but all of them contain at least exactly the same functions "register" and "vote", also few arrays like votings = [], groups = [] and ...
2
votes
1answer
146 views
how to test overloaded function in truffle?
I recently upgraded truffle to the newest version. Now it does not automatically detect overloaded functions anymore. Before, I could just do the following:
await contract.function({
from: accounts[...
0
votes
1answer
105 views
As in truffle tests pass the check by block.timestamp?
I have 2 functions
function startBuilding ()
public
{
uint[8] memory _buildingInfo;
_buildingInfo[1] = uint32(block.timestamp) + 2 minutes;
addBuilding(...
2
votes
1answer
81 views
Truffle .call() returns values with array index instead of keys
I am currently writing tests for solidity contract using truffle. When I invoke a function from the contract with .call(), the object that is being returned to me has the values included twice, once ...
2
votes
1answer
307 views
How to debug transaction from truffle test on development network
I am trying to debug a failing solidity function, which I am calling from the JS test files with truffle.
When I run my test, I am successfully able to get a transaction id. However, my solidity ...
2
votes
1answer
415 views
Returns TX Object instead result in Truffle test
I'm getting
AssertionError: expected { Object (tx, receipt, ...) } to be true
Here is my testing code
let apprOrOwnr = await this.erc721.isApprovedOrOwner(owner, tokenId);
expect(apprOrOwnr).to....
1
vote
2answers
226 views
Truffle test, how to get address(0)?
This is going to be short question and may be silly, but I'm literally stuck with a problem, where I need to pass address(0) to function in Truffle Test in JS and don't really know how to do it. In ...
1
vote
1answer
62 views
Truffle test failing
i am learning solidity contracts and ethereum dapps. I have created a smart contract for creating a ERC20 token on using truffle dev environment.
pragma solidity ^0.5.0;
contract LearnTokens {
...
1
vote
1answer
127 views
Debugging a VM error in solidity
I'm getting the following error while running a test in truffle:
Error: Returned error: VM Exception while processing transaction: revert
Now, the code is simply to big and complicated to run ...
1
vote
1answer
31 views
Issue with Contract function return value data type
I am using a simple contract
Contract code
contract Bank {
address public owner;
mapping(address => uint) private customerBalance;
event fallbackCalled(address, uint256);
event ...
2
votes
1answer
168 views
Contract Not Deploying In Truffle Tests
I am trying to do a simple test on Truffle, but it seems that the deployed() promise is never being executed.
var MyContract = artifacts.require('MyContract')
contract('MyContract', function(...
0
votes
2answers
293 views
How to access in JavaScript multiple return values returned from a solidity function
My contract function returns two values. How to access the multiple return values in JavaScript from a mocha testcase?
contract X {
function a() pure public returns(uint,uint) {
uint p=10;
...
2
votes
0answers
62 views
Truffle test to verify events can be queried by the address of the signing user?
I'm trying to write a test which verifies I can query a given type of events by the user/address which sign them.
I would like to apply TDD (relevant to say I haven't made the implementation for this ...
0
votes
0answers
66 views
No events were emitted - Exchanging ERC721 Tokens
Function to exchange ERC721 Tokens between two addresses. I am implementing this on truffle and openzeppelin 2.10. Two different tokens should be exchanged between two addresses.
Here's my contract ...
2
votes
1answer
52 views
Trying to understand why my test.js fails
I have a function that is not passing my tests in JS but the function works as expected in Remix. Can you help me
contract.sol
function test1 () public view returns(bool){
return(true);
}
...
