Improving Automated Tests with Fluent Assertions
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This document discusses improving automated tests with Fluent Assertions. It covers supported frameworks like MSTest, NUnit, and XUnit. Common assertions are described for strings, numbers, dates, collections, and JSON. Assertions can be batched into scopes. Similar libraries exist for Java (AssertJ), Python (Fluentcheck, Assertpy) and JavaScript (Chai).
Improving Automated Tests with Fluent Assertions
- 1. Gorilla Logic Proprietary and Confidential Improving Automated Tests with Fluent Assertions Jorge Vega Citalan jorge.vega.citalan@gmail.com
- 2. Gorilla Logic Proprietary and Confidential Agenda Introduction Supported Frameworks and Platforms Common Asserts Assertions Scope Asserts with JSON Java, Python & JavaScript? 2 1 3 4 5 6 2
- 3. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Introduction
- 4. Gorilla Logic Proprietary and Confidential Introduction ❏ Improve readability of test source code. 4
- 5. Gorilla Logic Proprietary and Confidential Introduction ❏ Clearer explanations about why a test failed. 5
- 6. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Supported Frameworks and Platforms
- 7. Gorilla Logic Proprietary and Confidential Supported Frameworks ❏ Fluent Assertions supports the following unit test frameworks: ■ MSTest (Visual Studio 2010, 2012 Update 2, 2013 and 2015) ■ MSTest2 (Visual Studio 2017, Visual Studio 2019) ■ NUnit ■ XUnit ■ XUnit2 ■ MBUnit ■ Gallio ■ NSpec ■ MSpec 7
- 8. Gorilla Logic Proprietary and Confidential Supported Platforms ❏ Fluent Assertions supports the following minimum platforms: ■ .NET Core 1.0 and 2.0 ■ .NET Framework 4.5 ■ Mono, Xamarin.iOS 10.0, Xamarin.Mac 3.0 and Xamarin.Android 7.0 ■ Universal Windows Platform 8
- 9. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Common Asserts
- 10. Gorilla Logic Proprietary and Confidential Strings ❏ Null, empty or contains whitespace only. 10
- 11. Gorilla Logic Proprietary and Confidential Strings ❏ Common assertions. 11
- 12. Gorilla Logic Proprietary and Confidential Strings ❏ Contain certain values. 12
- 13. Gorilla Logic Proprietary and Confidential Strings ❏ Wildcards and Regular Expressions. 13
- 14. Gorilla Logic Proprietary and Confidential Numerical and IComparable<T> ❏ Common assertions. 14
- 15. Gorilla Logic Proprietary and Confidential Numerical ❏ Doubles and Floats. 15
- 16. Gorilla Logic Proprietary and Confidential Numerical ❏ Assertions against a list of values. 16
- 17. Gorilla Logic Proprietary and Confidential Dates ❏ Common assertions. 17
- 18. Gorilla Logic Proprietary and Confidential Dates ❏ Date details. 18
- 19. Gorilla Logic Proprietary and Confidential Dates ❏ Ranges. 19
- 20. Gorilla Logic Proprietary and Confidential Nullable ❏ Common assertions. 20
- 21. Gorilla Logic Proprietary and Confidential Collections ❏ Common asserts. 21
- 22. Gorilla Logic Proprietary and Confidential Collections ❏ Individual assertions on all elements of a collection. 22
- 23. Gorilla Logic Proprietary and Confidential Dictionaries ❏ Common asserts. 23
- 24. Gorilla Logic Proprietary and Confidential Dictionaries ❏ Common asserts. 24
- 25. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Assertions Scope
- 26. Gorilla Logic Proprietary and Confidential Assertions Scope ❏ Batch multiple assertions into an AssertionScope so that FluentAssertions throws one exception at the end of the scope with all failures. 26
- 27. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Asserts with JSON
- 28. Gorilla Logic Proprietary and Confidential JSON ❏ Assertions allowed: ■ BeEquivalentTo() ■ ContainSingleElement() ■ ContainSubtree() ■ HaveCount() ■ HaveElement() ■ HaveValue() ■ MatchRegex() ■ NotBeEquivalentTo() ■ NotHaveElement() ■ NotHaveValue() ■ NotMatchRegex() 28
- 29. Gorilla Logic Proprietary and Confidential JSON ❏ Be sure to include using FluentAssertions.Json; otherwise false positives may occur. 29
- 30. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Java, Python & JavaScript?
- 31. Gorilla Logic Proprietary and Confidential Java ❏ AssertJ (https://joel-costigliola.github.io/assertj/) 31
- 32. Gorilla Logic Proprietary and Confidential Python ❏ Fluentcheck (https://github.com/csparpa/fluentcheck) 32
- 33. Gorilla Logic Proprietary and Confidential Python ❏ Assertpj (https://pypi.org/project/assertpy/) 33
- 34. Gorilla Logic Proprietary and Confidential JavaScript ❏ Chai (https://www.chaijs.com/guide/styles/#should) 34
- 35. Gorilla Logic Proprietary and ConfidentialGorilla Logic Proprietary and Confidential Demo
- 36. Gorilla Logic Proprietary and Confidential Q&A "With Fluent Assertions, the assertions look beautiful, natural and most importantly, extremely readable" Garish