Questions tagged [truffle-test]
The truffle-test tag has no usage guidance.
141
questions
1
vote
1answer
14 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
23 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 ...
0
votes
0answers
47 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
38 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
...
0
votes
0answers
23 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
2answers
55 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('...
1
vote
2answers
33 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
24 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
15 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
24 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
33 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
1answer
53 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
76 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
1answer
139 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
148 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
11 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
116 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
61 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
90 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
47 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
61 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
160 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
20 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
33 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
110 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
53 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
50 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 ...
1
vote
1answer
97 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
88 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
62 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
212 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
263 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
1answer
137 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
47 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
96 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
28 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
142 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
1answer
191 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
53 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
62 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
44 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);
}
...
1
vote
1answer
67 views
Truffle - a proper way to execute a chunk of code
Let's say I have a complex operation to execute, for example deploying 6 contracts and calling functions to each one, passing addreses to few of them and executing some extra more functions. I can, of ...
0
votes
1answer
406 views
Error: Please pass numbers as strings or BigNumber objects to avoid precision errors
let result = await instance.joinQuiz({
from: accounts[1],
value: web3.utils.toWei(10, "wei")
});
0
votes
1answer
62 views
How to test contract interaction with mainnet contract via Truffle
I'm writing a contract via Truffle and my understanding is that running truffle test will run my tests in a clean-room environment. E.g. a fresh deployment blockchain run on my local machine
How can ...
0
votes
1answer
157 views
Unable to test the value from contract using truffle test
block builders! I have trouble testing the return value from my contract, because the return uint value is always a "transaction" object (I actually don't really know what that mean)
Here is the ...
-2
votes
1answer
98 views
ParserError compiling Smart Contract, what's wrong?
I'm getting this error when trying to compile a contract using cmd on windows:
Error parsing C:/Users/alexa/Desktop/contracts/contracts/ApprovalContract.sol: ParsedContract.sol:6:37: ParserError: ...
2
votes
0answers
42 views
IntelliJ + truffle tests
I would like to run truffle tests from IntelliJ.
I found a tutorial here: https://charterhouse.github.io/2017/05/12/running-truffle-unit-tests-in-intellij-idea.html
Unfortunately, it does not seem ...
1
vote
1answer
156 views
Using the Truffle command line debugger
I'm writing a contract in solidity, in which a test case fails. I want to step through the code to find what's going wrong. I'm using truffle for development. This is what I do after making changes to ...
0
votes
1answer
51 views
Testing a function in Solidity
and am trying to write some test for a payable function in Solidity but i don't know how to go about it any help will be appreciated .
I want to test for the case where the buyer send an amount less ...
3
votes
1answer
232 views
Evaluate the performance of a smart contract [closed]
What is the best way and tools to evaluate the performance of a smart contract. More specifically, I want to test my contract for large scale deployment by making a script that emulate real world ...
