Effective testing with RSpec 3 : build Ruby apps with confidence / Myron Marston and Ian Dees.

Format:

Book

Author/Creator:

Marston, Myron, author.

Dees, Ian, author.

Series:

Pragmatic programmers.

Pragmatic Programmers

Language:

English

Subjects (All):

Computer software--Development.

Computer software.

Ruby on rails (Electronic resource).

Physical Description:

1 online resource (336 pages) : illustrations.

Edition:

1st edition

Other Title:

Build Ruby apps with confidence

Place of Publication:

Raleigh, North Carolina : The Pragmatic Bookself, 2017.

System Details:

text file

Summary:

"Our tests are broken again!" "Why does the suite take so long to run?" "What value are we getting from these tests anyway?" Solve your testing problems by building and maintaining quality software with RSpec - the popular BDD-flavored Ruby testing framework. This definitive guide from RSpec's lead developer shows you how to use RSpec to drive more maintainable designs, specify and document expected behavior, and prevent regressions during refactoring. Build a project using RSpec to design, describe, and test the behavior of your code. Whether you're new to automated tests or have been using them for years, this book will help you write more effective tests. RSpec has been downloaded more than 100 million times and has inspired countless test frameworks in other languages. Use this influential Ruby testing framework to iteratively develop a project with the confidence that comes from well-tested code. This book guides you through creating a Ruby project with RSpec, and explores the individual components in detail. Start by learning the basics of installing and using RSpec. Then build a real-world JSON API, using RSpec throughout the process to drive a BDD-style outside-in workflow. Apply an effective test strategy to write fast, robust tests that support evolutionary design through refactoring. The rest of the book provides the definitive guide to RSpec's components. Use rspec-core's metadata to slice and dice your spec suite. Dig into rspec-expectations' matchers: compose them in flexible ways, specify expected outcomes with precision, and diagnose problems quickly with the help of good failure messages. Write fast, isolated tests with rspec-mocks' test doubles while pushing your code toward simpler interfaces. The authors, with a combined 20 years of automated testing experience, share testing wisdom that will lead to a fun, productive testing experience. What You Need: To follow along with the book, you'll need Ruby 2.2+. The book will guide you through installing RSpec 3 and setting up a new project to use it.

Contents:

Cover

Table of Contents

Foreword

Acknowledgments

From Myron Marston

From Ian Dees

Introduction

How to Use This Book

Code Snippets

RSpec and Behavior-Driven Development

Who We Are

Who You Are

A Note on Versions

Online Resources

Part I-Getting Started

1. Getting Started With RSpec

Installing RSpec

Your First Spec

Understanding Failure

Sharing Setup (But Not Sandwiches)

Your Turn

2. From Writing Specs to Running Them

Customizing Your Specs' Output

Identifying Slow Examples

Running Just What You Need

Marking Work in Progress

3. The RSpec Way

What Your Specs Are Doing for You

Comparing Costs and Benefits

Different Types of Specs

Guidelines

Part II-Building an App With RSpec 3

4. Starting On the Outside: Acceptance Specs

First Steps

Deciding What to Test First

Checking the Response

Filling In the Response Body

Querying the Data

Saving Your Progress: Pending Specs

5. Testing in Isolation: Unit Specs

From Acceptance Specs to Unit Specs

Filling In the First Spec

Handling Success

Refactoring

Handling Failure

Defining the Ledger

6. Getting Real: Integration Specs

Hooking Up the Database

Testing Ledger Behavior

Testing the Invalid Case

Isolating Your Specs Using Database Transactions

Filling In the Behavior

Querying Expenses

Ensuring the Application Works for Real

Part III-RSpec Core

7. Structuring Code Examples

Getting the Words Right

Sharing Common Logic

Sharing Example Groups

8. Slicing and Dicing Specs with Metadata

Defining Metadata

Reading Metadata

Selecting Which Specs to Run

Sharing Code Conditionally

Changing How Your Specs Run

9. Configuring RSpec

Command-Line Configuration.

Setting Command-Line Defaults

Using a Custom Formatter

RSpec.configure

Part IV-RSpec Expectations

10. Exploring RSpec Expectations

Parts of an Expectation

How Matchers Work

Composing Matchers

Generated Example Descriptions

11. Matchers Included in RSpec Expectations

Primitive Matchers

Higher-Order Matchers

Block Matchers

12. Creating Custom Matchers

Delegating to Existing Matchers Using Helper Methods

Defining Matcher Aliases

Negating Matchers

Using the Matcher DSL

Defining a Matcher Class

Part V-RSpec Mocks

13. Understanding Test Doubles

Types of Test Doubles

Usage Modes: Mocks, Stubs, and Spies

Origins: Pure, Partial, and Verifying Doubles

14. Customizing Test Doubles

Configuring Responses

Setting Constraints

15. Using Test Doubles Effectively

Constructing Your Test Environment

Stubject (Stubbing the Subject)

Using Partial Doubles Effectively

Connecting the Test Subject to Its Environment

The Risks of Mocking Third-Party Code

High-Fidelity Fakes

Faking I/O with StringIO

Wrapping a Third-Party Dependency

A1. RSpec and the Wider Ruby Ecosystem

Bundler

Rake

Using Parts of RSpec With Other Test Frameworks

A2. Using RSpec with Rails

Installation

Using rspec-rails

Spec Types

Spec Types Cheat Sheet

Rails Matchers Cheat Sheet

A3. Matcher Cheat Sheet

Value Matchers

A4. Bibliography

Index

- SYMBOLS -

- DIGITS -

- A -

- B -

- C -

- D -

- E -

- F -

- G -

- H -

- I -

- J -

- K -

- L -

- M -

- N -

- O -

- P -

- Q -

- R -

- S -

- T -

- U -

- V -

- W -

- X -

- Y -.

Notes:

"Version: P1.0 (August 2017)."

Includes bibliographical references and index.

Description based on online resource; title from PDF title page (EBC, viewed March 14, 2018).

ISBN:

9781680503463

1680503464

9781680502770

1680502778

9781680503470

1680503472

9781680501988

1680501984

OCLC:

1008595910