Behavior-Driven Development Case Study

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“Behavioral Driven Development
- A white paper o From Vinod Tanwani (Manulife IDIS MS team)
Behavior-driven development (BDD), also known as specification by example, requirements in the form of scenarios written in language that is familiar to both technical and non-technical stakeholders. Speaking a common language ensures everyone understands the requirements and encourages collaboration in specifying the beh
This White Paper sets out the key considerations and roadmap for BDD, It explains
 What is BDD?
 Value of BDD with Case study
 Principals of BDD
 How BDD can help investment division MS organization
Manulife IDIS Team
e behavior of a system.
Page 1 defines avior
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The rest of us spun our wheels for years, struggling, as Dan North puts it, wanting to know where to start, what to test and what not to test, how much to test in one go, what to name tests, and how to understand
Manulife IDIS Team
” than “test”
’s specify the behaviors of the system those expectations for as long as the product lives.
In an effort to clear up the misconceptions that come from the name
Development, and to shed understandings that were surfacing from years of practices of Test driven developmen
North coined the term
Development to more accurately frame the practice. the confusion that the why a test fails.
Page 2 han se
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Wireless technology has become much more robust & integrated.
Manulife IDIS Team with the system’s behavior. That bug might describe them so that other developers a better job of managing risk, products. Mobile solutions should be an integral part of achieving
Page 3 scribe are. controlling Employee ID – 5012210
Principles of Behavioral
At its core, behavior-driven development is a specialized form of Hoare logic applied to test driven development which focuses on behavioral specification of software units.
Test-driven development is a software development methodology which essentially states that for each unit of software, a software developer must:
1) Define a test set for the unit first;
2) Then implement the unit;
3) Finally verify that the implementation of the unit makes
Manulife IDIS Team ehavioral Driven Development n efine hen inally the tests succeed.
Page 4 evelopment testdriven
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This definition is rather non-specific in that it allows tests in terms of high requirements, low-level technical details or anything in between. The original developer of BDD
(Dan North) came up with the notion of BDD b specification within TDD of what should be tested and how. One way of looking at

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