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Building Blockchain Projects

You're reading from Building Blockchain Projects

Product type Book

Published in Apr 2017

Publisher Packt

ISBN-13 9781787122147

Pages 266 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Narayan Prusty

Table of Contents (16) Chapters

Title Page

Credits

About the Author

About the Reviewers

www.PacktPub.com

Customer Feedback

Preface

1. Understanding Decentralized Applications

2. Understanding How Ethereum Works

3. Writing Smart Contracts

4. Getting Started with web3.js

5. Building a Wallet Service

6. Building a Smart Contract Deployment Platform

7. Building a Betting App

8. Building Enterprise Level Smart Contracts

9. Building a Consortium Blockchain

Exploring ethereumjs-testrpc

ethereumjs-testrpc is a Node.js-based Ethereum node used for testing and development. It simulates full-node behavior and makes the development of Ethereum applications much faster. It also includes all popular RPC functions and features (such as events) and can be run deterministically to make development a breeze.

It's written in JavaScript and is distributed as an npm package. At the time of writing this, the latest version of ethereumjs-testrpc is 3.0.3 and requires at least Node.js version 6.9.1 to run properly.

Note

It holds everything in memory; therefore, whenever the node is restarted, it loses the previous state.

Installation and usage

There are three ways to simulate an Ethereum node using ethereumjs-testrpc. Each of these ways has its own use cases. Let's explore them.

The testrpc command-line application

The testrpc command can be used to simulate an Ethereum node. To install this command-line app, you need to install ethereumjs-testrpc globally:

npm install...

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Authors (1)

Narayan Prusty

Narayan Prusty is a full-stack developer. He works as a consultant for various start-ups around the world. He has worked on various technologies and programming languages but is very passionate about JavaScript, WordPress, Ethereum, Solr, React, Cordova, MongoDB, and AWS. Apart from consulting for various start-ups, he also runs a blog titled QNimate and a video tutorial site titled QScutter, where he shares information about a lot of the technologies he works on.

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