#4 - Mock (Using sinon) | Mocha - Javascript unit testing framework

This is the 4th video tutorial of this web series on Mocha - Javascript unit testing framework. In this tutorial you will learn how to mock a method. A method should ideally be unit tested independently and it should have no impact of what's happening in other functions that are called from within it. In such cases, we must avoid the actual calls to those functions and should use dummy calls. It is possible that the other functions are taking too much time to complete - why should we wait for such methods to execute when these have no impact on the method that we are unit testing. Hence, such methods should be mocked.

#Mocha #UnitTesting #JavascriptUnitTesting #JSUnitTesting #Mock #Assertions #ChaiJS #Sinon #Mocking #MockFunction

► Sample code on github: https://github.com/SunilSyal/Mocha---sample-test-cases/tree/master

Mocha unit testing framework is the most popular framework for Javascript unit testing. In this web series, I have used other popular libraries
- Chai - as assertion library with expect interface
- Sinon - for spies, mocks and stubs
- Nock - for xhr interception and mocking
- Nyc - Unit test coverage report and its important configurations

Hope you will learn good from this course. Let me know your feedback, suggestions - I will really appreciate it.

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► This series:
♦ Video 1 - Intro - https://youtu.be/NBjYY8P08lI
♦ Video 2 - Setup and first unit test - https://youtu.be/M0UtmM1Rrpo
♦ Video 3 - Spy - https://youtu.be/lvjDDn9cpL4
♦ Video 4 - Mock - https://youtu.be/HHuyMS3sg7U
♦ Video 5 - Stub - https://youtu.be/Z2JYw2cExqE
♦ Video 6 - Promise - https://youtu.be/CoQNtq5z7Bo
♦ Video 7 - XHR - https://youtu.be/JAARVkUPExU
♦ Video 8 - Hooks - https://youtu.be/COx7FzjPbw8
♦ Video 9 - Coverage - https://youtu.be/axYIKxMA2KY
♦ Video 10 - Misc - https://youtu.be/uYtr3aeWxYg

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► Playlist - CSS Tutorials for Beginners: https://www.youtube.com/watch?v=3QRBZUroHU8&list=PLgbtO1Bcz4C_uV1QJ584F8ydCkHFzvkxZ

► If you are looking to start with GIT, you can have a look at the following videos:
♦ GitHub - Introduction & Basics | Repo, Branches, Merge, Conflicts :: https://youtu.be/QyTTywFzfbk
♦ GitHub - Create Repository | Git clone & GitHub Desktop :: https://youtu.be/FY6ceaqFDeY
♦ GitHub - Create Local Repository and push to git | Push an existing repository to git :: https://youtu.be/vbQ2bYHxxEA
♦ GitHub - git add command | Created a simple chart to understand most important options :: https://www.youtube.com/watch?v=685Vh5Kxx5U
♦ GIT Tutorial - How to Squash Commits :: https://youtu.be/viY1BbKZhSI

► GitHub Playlist :: https://www.youtube.com/watch?v=QyTTywFzfbk&list=PLgbtO1Bcz4C_Qo3au1tPA_M2Bm6Iy1N3K
► CSS Tutorials for Beginners :: https://www.youtube.com/watch?v=3QRBZUroHU8&list=PLgbtO1Bcz4C_uV1QJ584F8ydCkHFzvkxZ
► DialogFlow :: https://www.youtube.com/watch?v=KcEo0eKDLpI&list=PLgbtO1Bcz4C-joi1zEvz2YsNeba4zZSlm

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