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Design by Contract - The Sequel

November 20, 2007

In this post I put out some code for checking method arguments. I changed it somewhat regarding value  types:

public void DoSomethingMeaningfull(Int32 someNumber) { // Throws ArgumentOutOfRangeException Check.Argument((IComparable<Int32>)someNumber, "someNumber").IsNotNegative(); }
public void DoSomethingMeaningfull(Int32 someNumber) { // Throws ArgumentOutOfRangeException Check.Argument((IComparable<Int32>)someNumber, "someNumber").IsNotPositive(); }
public void DoSomethingMeaningfull(Int32 someNumber) { // Throws ArgumentOutOfRangeException Check.Argument((IComparable<Int32>)someNumber, "someNumber").IsNotZero(); }

As you can see, I opened it up for all comparable types. The code for this can be downloaded here. Please let me know what you think.

If you and your team want to learn more about how to write maintainable unit tests and get the most out of TDD practices, make sure to have look at our trainings and workshops or check out the books section. Feel free to reach out at infonull@nullprincipal-itnull.be.

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Jan Van Ryswyck

Thank you for visiting my blog. I’m a professional software developer since Y2K. A blogger since Y2K+5. Provider of training and coaching in XP practices. Curator of the Awesome Talks list. Past organizer of the European Virtual ALT.NET meetings. Thinking and learning about all kinds of technologies since forever.

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Thank you for visiting my website. I’m a professional software developer since Y2K. A blogger since Y2K+5. Author of Writing Maintainable Unit Tests. Provider of training and coaching in XP practices. Curator of the Awesome Talks list. Thinking and learning about all kinds of technologies since forever.

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