Fast Feedback Using Ruby
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Fast Feedback Using Ruby

About the Book

The book describes various ways of getting feedback — and fast feedback — using Ruby tools, such as plain Ruby scripts and Rake tasks. It also shows a way to automatically execute these tools, using guard.

About the Author

Stephan Kämper
Stephan Kämper

Stehpan is a traveller (not necessarily in a geographical sense) who seeks, observes … and occasionally finds.

He studied physics, worked in oceanography, survived cancer, lives at the seaside, and blogs at

Most used languages (in alphabetical order): English, German, Ruby.

Table of Contents

  • Acknowledgements
  • Preface
    • Who is this book for?
    • Assumptions
    • Icons used in the book
    • Setup & Environment
    • Using Filefiles
  • 1 Introduction
  • 2 First experiments
    • 2.1 A task to solve
    • 2.2 A general setup for projects
    • 2.3 The first HTML generator
  • 3 Rake
    • 3.1 An overview
    • 3.2 The simple text transformation as a Rake task
  • 4 Guard
    • 4.1 Guard installation
    • 4.2 Running Guard – having a Guardfile & a plug-in
    • 4.3 Example Guard usage
  • 5 Combining Rake and Guard
    • 5.1 The directory task
    • 5.2 Rake’s FileList
    • 5.3 A task dependency
    • 5.4 A rule to describe how to generate the HTML files
  • 6 Rake details
    • 6.1 How Rake finds the Rakefile in a directory hierarchy
    • 6.2 Name spaces
    • 6.3 Task Names
    • 6.4 Task bodies and code blocks
    • 6.5 Task dependencies
    • 6.6 Task parameters
    • 6.7 Rake troubles
  • 7 Guard details
    • 7.1 The Guardfile DSL
    • 7.2 A selection of plug-ins
  • 8 Testing Rake tasks – overview
    • 8.1 You don’t test them
    • 8.2 Non-Automated Testing
    • 8.3 Cucumber
    • 8.4 MiniTest or RSpec + Refactored Rake Tasks
    • 8.5 ‘Redefine’ Rake Methods
    • 8.6 Some General Remarks
  • 9 Testing Rake tasks
    • 9.1 Legacy Rake tasks
  • Epilogue
  • Notes

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