ETH Utils

Case study:

• eCommerce site needs wallet for each customer
• However, manage all these wallets is overwhelm.

Solution: Simple hold mnemonic phrase, we can:

• From mnemonic phrase > Create HD Wallet
• From HD Wallet > Generate thousands wallets
• From HD Wallet > Collect back all coins from generated wallets

Usage

• Update .ethrc with your own info.
• Run source .ethrc to inject environment variable before using libs.
• Run yarn call [file path] to execute node with babel.

Generate Wallets

import HDWallet from 'HDWallet'
const mnemonic = HDWallet.newMnemonic();
const childrenInfo = HDWallet.generate()

• Example

Collect Coin

To manual test yarn collect <mnemonic> commands:

# Setup Scenario
yarn call src/commands/__tests__/manual/sendCoinAsEndUser.js

# Collect using test-case's mnemonic
yarn collect "roast recipe soon hat couch mercy inspire dynamic pottery smooth bubble arrest"

• Test Cases Info
• Log file: When finished, log file saved in logs folder as collect-coin_[timestamp].log

Test

Run Test

• Test all cases

yarn test

• Test all cases without console.log

yarn test --silent

• Test single case

yarn test [file path]

• Test with options

# Common used options
yarn test --silent --dectectOpenHandles --watch [file path]

• Test coverage

yarn test --coverage

Ignore Long-running Test Suites

Update code as describe.skip on these test suites

Long-running test suites:

• Watch Block

Screenshots

Collect Coin Log

Test Console

Test Coverage