Questions tagged [truffle-test]
The truffle-test tag has no usage guidance.
1
vote
2answers
32 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
1answer
27 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, '...
0
votes
0answers
38 views
Test Events using Truffle and Ganache
I am testing the following contract (removed non relevant parts for brevity)
pragma solidity ^0.5.0;
contract GameManager {
address[] public deployedGames;
address public lastGame;
...
1
vote
1answer
23 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
12 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
22 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
31 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
46 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
48 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
123 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'
------...
0
votes
0answers
119 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
92 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
56 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
78 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
42 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
49 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
145 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
17 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
31 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
95 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
51 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
47 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
84 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
84 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
50 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
180 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
209 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
104 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
41 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
88 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
27 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
127 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
174 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
51 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
61 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
43 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
59 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
331 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
60 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
136 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
93 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
38 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
127 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
45 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
219 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 ...
0
votes
1answer
37 views
What are the best Practices for writing truffle Tests for a Smart Contract ?
I am currently having a project where a banking system is to be made, what is the approach to get into it. Its suggested to write the tests first and then proceed with the smart contract. What are the ...
0
votes
2answers
29 views
What can i do if truffle doesn't execute commands?
First of all i can´t execute truffle writing truffle console. Instead of that I have to write truffle.cmd console. When im in the truffle console and I try to execute test over my contracts I get ...
0
votes
1answer
149 views
“truffle test” says “assert.rejects” is not a function even it is Node 10
As per the official documentation, assert.rejects was added since Node v10.0.0.
Also, the node console confirms that:
even though, truffle test throws this error:
TypeError: assert.rejects is ...
0
votes
1answer
134 views
How to define a function inside a truffle contract test [closed]
Is that possible to define a function inside a truffle contract test?
There is a repetitive yet complicated step in truffle test scenario I am working on and wondering would it be possible to ...
