Learn how to refactor and extend your unit tests for additional functionality and coverage.
- [Instructor] Now, if you're an experienced programmer,…you'll be yelling at the screen now,…because, of course, I haven't done anything to make sure…that we actually got four elements in that array.…So if we send in things that don't parse into four elements,…we're definitely going to have errors.…But we're going to cover that in more tests.…Okay so we can go ahead and delete that comment.…We need to do a bit of refactoring already.…Because this test is a bit specific,…it only really works for one string.…In theory, I could have hard-wired the values…for these and simply returned those exact dates…and that test would have passed.…
And in a very strict TDD view of the world,…that's what I would have done.…So let's assume that I'm being a bit strict…and I'm going to send some other values through.…We're going to need to do some refactoring.…Let's exploit Nunit's way of producing test cases,…which is with the TestFixture attribute.…And we can move that whole string to there.…Which means this will need to take one argument.…
Author
Released
12/20/2016- Defining values and calling functions in F#
- Defining and identifying discriminated unions
- Working with if-else expressions
- Writing unit test
- Using type providers to access data
- Analyzing data with collection functions
- Plotting data using the R type provider
- Using railway-oriented programming to handle errors
- Integrating with Twitter
- Deploying an F# application to Azure
Skill Level Intermediate
Duration
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Introduction
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Welcome59s
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Exercise files41s
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1. Get Started with F#
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Record type and arrays2m 35s
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Forward piping3m 39s
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Array mapping and iteration6m 22s
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If-else expressions2m 9s
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Exception handling2m 40s
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Option types5m 9s
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The bot and type signatures4m 19s
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2. Build a Simple Parser with Unit Testing
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Install NUnit4m 23s
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Write a real test4m 31s
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Write a parser5m 8s
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Refactor tests5m 18s
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Test unhappy paths4m 1s
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Challenge35s
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Solution3m 38s
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3. Use F# CSV Type Provider to Get Data
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Recap and code tidy-up1m 51s
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Introducing Quandl1m 52s
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Challenge1m 14s
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Solution9m 34s
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4. Analyze Data with F# Collection Functions
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5. Use RStats Provider and ggplot2 to Plot Data
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RStats and ggplot21m 38s
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Develop the chart generator5m 45s
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Challenge38s
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Solution2m 21s
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6. Use BoxKite with Twitter
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Create a Twitter application5m 24s
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React to directed tweets4m 47s
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7. Deploy a Working Bot
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Call the reply function1m 17s
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Try the bot running locally1m 53s
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Understanding ROP2m 37s
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Conclusion
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Next steps1m 46s
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Video: Refactor tests