Introduction

Chroma is an end-to-end (E2E) testing library for wallet interactions across multiple blockchain ecosystems. It enables developers to write automated tests that interact with real wallet extensions, providing a comprehensive testing solution for decentralized applications (dApps).

Initially designed for the Polkadot ecosystem, Chroma is expanding to support EVM (Ethereum Virtual Machine) and SVM (Solana Virtual Machine) chains.

Features

• Easy Extension Setup - Download wallet extensions with a single command
• Multi-Wallet Support - Test with multiple wallet extensions simultaneously
• TypeScript Support - Full type safety and autocomplete
• VS Code Integration - Works with Playwright Test for VS Code

Quick Example

import { createWalletTest } from '@avalix/chroma'

const test = createWalletTest({
  wallets: [{
    type: 'polkadot-js'
  }]
})

test('connect wallet', async ({ page, wallets }) => {
  const polkadotJs = wallets['polkadot-js']

  await polkadotJs.importMnemonic({
    seed: 'bottom drive obey lake curtain smoke basket hold race lonely fit walk'
  })

  await page.goto('http://localhost:3000')
  await polkadotJs.authorize()
  await polkadotJs.approveTx()
})

Next Steps