Compilers

Agile Swift: Swift Programming Using Agile Tools and by Godfrey Nolan

By Godfrey Nolan

This brief step-by-step consultant walks you thru unit checking out, mocking and non-stop integration and the way to get those key components operating on your rapid initiatives. This e-book additionally appears at easy methods to write your quick apps utilizing try out pushed improvement (TDD).
Agile practices have made significant inroads in iOS improvement, in spite of the fact that it’s very strange to work out anything as uncomplicated as unit checking out on a rapid program. performed accurately, Agile improvement leads to an important raise in improvement potency and a discount within the variety of defects.
Apple has published unit checking out and code assurance frameworks for fast improvement in XCode. Up before getting unit checking out up and working in quick used to be no longer for the faint-hearted. fortunately now, there isn't any excuse except an absence of knowledge on the place to get started.
iOS builders are confronted with their very own set of difficulties corresponding to tightly coupled code, fragmentation, immature checking out instruments all of which might be solved utilizing current Agile instruments and strategies. After utilizing this publication, you are going to methods to make your fast apps agile and sound.
What you are going to Learn:

  • How to put in writing unit checks in Swift
  • How to write down an software utilizing attempt pushed Development
  • Refactoring
  • Mocking frameworks
  • How to establish and configure a continuing Integration Server
  • How to degree code coverage
  • GUI Testing

Who This booklet Is For:
Swift builders and will be cellular app testers will enjoy the information during this book.

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Additional resources for Agile Swift: Swift Programming Using Agile Tools and Techniques

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Test logs 50 Chapter 2 ■ Swift Unit Testing If a test does fail, then the logs can be filtered to show errors only, as shown in Figure 2-24. In this example we’ve removed the guard condition from the divide function and caused an error by testing to see what happens when we divide by zero. Figure 2-24. Test error logs Clicking on the error will take you to errant code, as shown in Figure 2-25. Figure 2-25. Code error in Xcode 51 Chapter 2 ■ Swift Unit Testing We can fix the error by removing the comments so the guard can again catch the error before it crashes the program.

XCTest needs to know the name of all the test methods in your code. In both our test files we have an allTests extension with the name of the file SimpleCalculatorTests and a list of all the tests in the format shown in Listing 2-17. If you do not include a test method in allTests, it will not get called. 55 Chapter 2 ■ Swift Unit Testing Listing 2-17. swift file that sets up the allTests variables for swift-test, as shown in Listing 2-18. The format is the same; you just change the names of the test suite and test case to match whatever you want to call your test suite.

The green arrow indicates that it’s a passing test. You should see the same view as shown in Figure 2-7. 34 Chapter 2 ■ Swift Unit Testing Figure 2-7. testExample test passes We can also see a report on how the tests ran if we right-click again on testExample() in the Test Navigator and choose Jump to report. See Figure 2-8. Figure 2-8. Test report While we don’t have that much to report yet, it does show us where we need to go when we start writing more comprehensive unit tests. To complete this app, you need to take the following steps: 1.

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