Rails 5 test prescriptions : build a healthy codebase / Noel Rappin ; edited by Katharine Dvorak.

Format:

Book

Author/Creator:

Rappin, Noel, author.

Contributor:

Dvorak, Katharine, editor.

Series:

Pragmatic programmers.

Pragmatic Programmers

Language:

English

Subjects (All):

Ruby on rails (Electronic resource).

Web site development.

Physical Description:

1 online resource (388 pages) : illustrations.

Edition:

Version: P1.0 (February 2018).

Place of Publication:

Raleigh, North Carolina : The Pragmatic Bookshelf, 2018.

System Details:

text file

Summary:

Does your Rails code suffer from bloat, brittleness, or inaccuracy? Cure these problems with the regular application of test-driven development. You'll use Rails 5.1, Minitest 5, and RSpec 3.6, as well as popular testing libraries such as factory_girl and Cucumber. Updates include Rails 5.1 system tests and Webpack integration. Do what the doctor ordered to make your applications feel all better. Side effects may include better code, fewer bugs, and happier developers. Your Ruby on Rails application is sick. Deadlines are looming, but every time you make the slightest change to the code, something else breaks. Nobody remembers what that tricky piece of code was supposed to do, and nobody can tell what it actually does. Plus, it has bugs. You need test-driven development: a process for improving the design, maintainability, and long-term viability of software. With both practical code examples and discussion of why testing works, this book starts with the most basic features delivered as part of core Ruby on Rails. Once you've integrated those features into your coding practice, work with popular third-party testing tools such as RSpec, Jasmine, Cucumber, and factory_girl. Test the component parts of a Rails application, including the back-end model logic and the front-end display logic. With Rails examples, use testing to enable your code to respond better to future change. Plus, see how to handle real-world testing situations. This new edition has been updated to Rails 5.1 and RSpec 3.6 and contains full coverage of new Rails features, including system tests and the Webpack-based JavaScript setup. What You Need: Ruby 2.4, Rails 5.1

Contents:

Cover

Table of Contents

Acknowledgments

Preface

Who You Are

What's in This Book

What You'll Need

A Word About Tools, Best Practices, and Teaching TDD

Changes in This Edition

Online Resources

1. A Test-Driven Fable

Testing First Drives Design

What Is TDD Good For?

When TDD Needs Some Help

What You've Done

2. Test-Driven Development Basics

Infrastructure

The Requirements

Installing RSpec

Where to Start?

Running the Test

Making the Test Pass

The Second Test

Back on Task

Adding Some Math

The First Date

Using the Time Data

3. Test-Driven Rails

Let's Write Some Rails

The Days Are Action-Packed

Who Controls the Controller?

A Test with a View

Testing for Failure

4. What Makes Great Tests

The Big One

Cost and Value

SWIFT: The Five Qualities of Valuable Tests

5. Testing Models

What Can You Do in a Model Test?

What Should You Test in a Model Test?

Okay, Funny Man, What Makes a Good Set of Model Tests?

Refactoring Models

A Note on Assertions per Test

Testing What Rails Gives You

Testing ActiveRecord Finders

Testing Shared Modules and ActiveSupport Concerns

Writing Your Own RSpec Matchers

6. Adding Data to Tests

What's the Problem?

Fixtures

Factories

Dates and Times

7. Using Test Doubles as Mocks and Stubs

Test Doubles Defined

Creating Stubs

Mock Expectations

Using Mocks to Simulate Database Failure

Using Mocks to Specify Behavior

More Expectation Annotations

Mock Tips

8. Integration Testing with Capybara and Cucumber

A Field Guide to Integration and System Tests

Setting Up Capybara

Using Feature Tests to Build a Feature.

What to Test in an RSpec System Test

Outside-in Testing

Making the Capybara Test Pass

Retrospective

Setting Up Cucumber

Writing Cucumber Features

Writing Cucumber Steps

Advanced Cucumber

Is Cucumber Worth It?

9. Testing JavaScript: Integration Testing

Integration-Testing JavaScript with Capybara

Let's Talk About Drivers

Webpack in Developer Mode

10. Unit-Testing JavaScript

Setting Up JavaScript Unit Tests

Writing a Sample Test

TDD in JavaScript

Jasmine Matchers

Testing Ajax Calls

Using testdouble.js

Connecting the JavaScript to the Server Code

11. Testing Rails Display Elements

Testing Routes

Testing Helper Methods

Testing Controllers and Requests

Simulating Requests

What to Expect in a Request Spec

Older Rails Controller Tests

Testing Mailers

Testing Views and View Markup

Using Presenters

Testing Jobs and Cables

12. Minitest

Getting Started with Minitest

Minitest Basics

Running Minitest

Minitest Setup

Mocha

System Tests and Others

Minitest Helper Tests

Minitest and Routing

13. Testing for Security

User Authentication and Authorization

Adding Users and Roles

Restricting Access

More Access-Control Testing

Using Roles

Protection Against Form Modification

Mass Assignment Testing

Other Security Resources

14. Testing External Services

External Testing Strategy

The Service Integration Test

Introducing VCR

Client Unit Tests

Why an Adapter?

Adapter Tests

Testing for Error Cases

Smoke Tests and VCR Options

The World Is a Service

15. Troubleshooting and Debugging

General Principles

The Humble Print Statement.

Git Bisect

RSpec or Minitest Bisect

Pry

Common Rails Gotchas

16. Running Tests Faster and Running Faster Tests

Running Smaller Groups of Tests

Running Rails in the Background

Running Tests Automatically with Guard

Writing Faster Tests by Bypassing Rails

Recommendations for Faster Tests

17. Testing Legacy Code

What's a Legacy?

Set Expectations

Getting Started with Legacy Code

Test-Driven Exploration

Dependency Removal

Find the Seam

Don't Look Back

Bibliography

Index

- SYMBOLS -

- 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:

Includes bibliographical references and index.

Description based on online resource; title from PDF title page (EBC, viewed April 6, 2018).

ISBN:

9781680505573

1680505572

9781680505566

1680505564

9781680505580

1680505580

9781680502503

1680502506

OCLC:

1030304591