- Taschenbuch: 270 Seiten
- Verlag: Manning (28. Juni 2011)
- Sprache: Englisch
- ISBN-10: 1617290084
- ISBN-13: 978-1617290084
- Größe und/oder Gewicht: 18,7 x 1,5 x 23,5 cm
- Durchschnittliche Kundenbewertung: 2 Kundenrezensionen
- Amazon Bestseller-Rang: Nr. 41.473 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
Specification by Example: How Successful Teams Deliver the Right Software (Englisch) Taschenbuch – 28. Juni 2011
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Über den Autor und weitere Mitwirkende
A UK based consultant, Gojko Adzic helps teams worldwide implement specification by example and agile testing practices. He has written two previous books on the subject and contributed to several open source projects supporting specification by example. Gojko is a frequent speaker at leading software development and testing conferences and runs the UK Agile Testing User Group.
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Gojko covers Specification Workshops, in which teams gain a shared understanding about the features to be implemented. He continues to explain how to derive relevant examples as a specification for the software. While the code is implemented, these examples are automated to the letter, so that an executable specification evolves. Over time a living documentation is created, eventually leading to a well maintainable software system.
Gojko abstracts from the particular tools that support Agile friendly test automation. Instead he explains the approaches that different teams took, and which trade-off decisions they were faced with, and which lessons they learned. By sharing these lessons you can avoid most common mistakes. This book reflects the current state of the art of Specification by Example, and the content comes close to the classic Design Patterns book by Gamma, Helm, Johnson, and Vlissides.
Independent of the specific tools that were used, Gojko identified and described common challenges teams were facing and solutions they found as well as common patterns teams applied successfully.
For beginners this book will give a head start into the topic. Note, however, that this book is not a beginner's guide. Reading Gojko's first book, 'Bridging the Communication Gap', is a useful supplement for getting started.
Practitioners will find both confirmations to already found patterns and solutions as well as new inspiration to improve their practice.
The book is also very suitable for convincing decision makers who want see evidence about ATDD and specification-by-example applied in different organizations.
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A must read for everyone building non-trivial systems with long life spans! Some downsides (I’d given 5 stars without these):
- Although the case studies were very interesting, their reporting in the book was a bit shallow. I would liked to have seen more details and in-depth analysis of each case.
- As it says in the book, one of the best ways to learn to write good specifications is to study good examples, I expected to see more examples of specifications and wanted to see what the specs the teams in the case studies were creating look like.
- Although this book isn’t about tools, I would liked to have seen some kind of sketches or diagrams of the development / test / build / documentation environments the teams build in the case studies. I also think that the hierarchy or structure of the specs (e.g. epic-feature-story) would be one important topic to discuss about.
The book Specification by Example is the result of drawing experiences from how a number of actual project teams work with the practice Specification by Example. This makes the book particularly valuable, since its advice in not solely based on theories or opinions on how develop software, but it distills experiences of what has actually worked in different situations and in different domains.
The ideas of the practice Specification by Example have been in use for some time now, under different names like Acceptance Test-Driven Development, Agile Acceptance Testing and Behavior-Driven Development. The author chooses in my mind a sensible terminology for the practice itself and its different parts, or process patterns to use the authors term.
The book has two main parts, the description of the process patterns of Specification by Example, and a set of case studies of project that uses Specification by Example. In addition the book contains an introduction to the practice of Specification by Example and guidelines on how to introduce the practice in organizations.
These process patterns of Specification by Examples are described together with tips about "does" and "don'ts". The case studies part of the book contains six case studies covering a diverse set of domains.
As a software developer that was "test infected" 10 years ago, a think that the practice Specification by Example, essential for successful and efficient software development. I think this book is the best book on the market today, for learning and adopting the practice Specification by Example.
One of the biggest questions I have always received is how do you scale a process for specifying your work via Examples so that small projects can obtain the same benefits and this is covered very well in the book, it has given me many new ideas about how to work within smaller project/team structures.
If you are just starting Agile, read this book, your teams will benefit from the discipline of Specification by Example. If you are already Agile this book will help you get better, improve your velocity, lower defects identified and generally make the process of moving fast less stressful.
Quality isn't a word is a process and this book will help you build the right process for your organization.
The book is divided in three parts. The first part is mainly introduction where Gojko describes the benefits and the key practices that will be described in this book. The second part is the actual description of the key practices and the third part are different case studies about different teams in different companies that have adopted specification by example.
The key practices that are introduced in part one and described in part 2 are:
- Deriving scope from goals
- Specifying collaboratively
- Illustrating using example
- Refining the specification
- Automating without changing the specification
- Validating frequently
- Evolving a documentation system
Deriving scope from goals discusses how customers main concert is not the software but solving a problem and developers shouldn't just expect to get the requirements from the customer but work together with them to help them to solve their problem in the best way. Specifying collaboratively covers how the customer and the teams will cooperatively define the specifications that the team will be implementing later. Illustrating using examples explains how these specifications can be described best by moving from abstract requirements to concrete examples. Refining the specification then takes the essence out of the requirements and describes them in the clearest possible way. After that, the specification can be automated without changing the specification and this chapter gives tips on how to do that. When the specifications are automated, you want to run them frequently which is described in the validate frequently chapter. Evolving a documentation system describes how the specifications become the documentation of what the system does. They stay in-sync with the system because they are continuously executed.
The third part described a couple of case studies of companies that implemented specification by example. I really loved these case studies and they were written very well.
I've read both of Gojko's earlier books and had high expectations for this book. I was not disappointed, it is an excellent follow-up and will be my standard book reference on Specification by Example (or A-TDD as it is also called). The book is not perfect though. As times I felt there was too much focus on documentation and too little on collaboration. Still, I'd rate this book five stars and recommend everyone in an Agile development team to read this and practice specification by example.