@openzeppelin/test-environment
v0.1.9
Published
One-line setup for an awesome testing experience.
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OpenZeppelin Test Environment
Blazing fast smart contract testing. One-line setup for an awesome testing experience.
- Near-instant start up: have your code running in under 2s after typing
npm test
. - Test runner agnostic – from the familiarity of Mocha, to parallel tests using Jest or Ava!
- Non-opinionated: use either
@truffle/contract
orweb3-eth-contract
as you see fit. - First class support for the OpenZeppelin Test Helpers.
- Highly configurable: from gas limit and initial balance, to complex custom web3 providers.
- No global variables, no hacks.
test-environment
is the result of our learnings while developing the OpenZeppelin Contracts, combining best practices and the tools we've come to rely on over the years. We think you'll love it!
Overview
Installation
npm install --save-dev @openzeppelin/test-environment
Usage
By including require('@openzeppelin/test-environment')
in your test files, a local ganache-powered blockchain with unlocked accounts will be spun up, and all tools configured to work with it.
Here's a quick sample of how using test-environment
in a Mocha + Chai setup looks like.
const { accounts, contract } = require('@openzeppelin/test-environment');
const [ owner ] = accounts;
const { expect } = require('chai');
const MyContract = contract.fromArtifact('MyContract'); // Loads a compiled contract
describe('MyContract', function () {
it('deployer is owner', async function () {
const myContract = await MyContract.new({ from: owner });
expect(await myContract.owner()).to.equal(owner);
});
});
If you're used to truffle test
, this probably looks very familiar. Follow our guide on migrating from Truffle to have your project running with test-environment
in a breeze!
Note: if you'd rather not rely on truffle contracts and use web3 contract types directly, worry not: you can configure test-environment
to use the web3-eth-contract
abstraction.
Learn More
- Check out Getting Started to use Test Environment in a new project.
- If you are currently using
truffle test
, head instead to Migrating from Truffle. - The Choosing a Test Runner guide will teach you how to use each of the different runners.
- For detailed usage information, take a look at the API Reference.
License
Released under the MIT License.