This document discusses test-driven development (TDD) using Karma and Jasmine tools. It covers what TDD is, why it is used, how to implement TDD, and includes a code demo. TDD involves writing failing automated tests before code to verify functionality, producing just enough code to pass each test. Using TDD enhances code maintainability and provides immediate feedback on changes. The document reviews tools like Karma and Jasmine for JavaScript testing and how to set up specs, matchers, dependencies and async support for TDD.

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TDD-Using Karma and Jasmine
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Copyright © 2015. Cybage Software Pvt. Ltd. All Rights Reserved. Cybage Confidential.
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Agenda
• What is TDD?
• Why ?
• How to do TDD?
• Code Demo
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What is TDD?
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automated tools.
1-verifying that your code does what it is
expected to do with automated tools.
1-verifying that your code does what it is
expected to do with automated tools
• Verifying that your code does what it is expected to do, with automated
tools.
• TDD is software development process that encourages writing failing
automated test case then produce the minimum amount of code
required to pass that test and optionally followed by refactoring code.
• TDD helps design our code, it helps in documentation of code as well

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Red Green Blue Factor

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Why ?
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• Enhances the code maintainability for further changes in code base as well as
test case.
• Provides immediate feedback for any change in code .
• Test coverage score is high in case of test First.
• Provides the facility of breaking the negative feedback of increased defects.

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How to do TDD?
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Tools required
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• karma/protractor –java script test runner that integrates with a number of
browsers.
• jasmine version(provides better documentation ): 2.0 or qunit and sin on.

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Jasmine
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• It have Suits and Specs
• Pre Defined Matchers –toBe,toBeDefined ,toBeFalsy
• SetUp-In beforeEach prerequisites can be defined, afterEach and it also used .

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• Number of facilities like spyOn which Jasmine has test double functions called
spies
• A spy can stub any function and tracks calls to it and all arguments. A spy only
exists in the describe or it)
• Dependency Injections , Services like $timeout ,$window,$location
• Async Suport –Use WaitsFor and runs

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Code Demo
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Some References
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• http://www.slideshare.net/cebartling/javascript-tdd-with-jasmine-and-karma
• https://blog.logentries.com/2015/01/unit-testing-with-karma-and-jasmine-for-
angularjs/
• http://jsfiddle.net/B72tr

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