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Django Design Patterns and Best Practices

You're reading from   Django Design Patterns and Best Practices Industry-standard web development techniques and solutions using Python

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788831345
Length 282 pages
Edition 2nd Edition
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Author (1):
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Arun Ravindran Arun Ravindran
Author Profile Icon Arun Ravindran
Arun Ravindran
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Table of Contents (16) Chapters Close

Preface 1. Django and Patterns FREE CHAPTER 2. Application Design 3. Models 4. Views and URLs 5. Templates 6. Admin Interface 7. Forms 8. Working Asynchronously 9. Creating APIs 10. Dealing with Legacy Code 11. Testing and Debugging 12. Security 13. Production-Ready 14. Python 2 Versus Python 3 15. Other Books You May Enjoy

Pattern – Test fixtures and factories


ProblemTesting a component requires the creation of various prerequisite objects before the test. Creating them explicitly in each test method gets repetitive.

Solution: Utilize factories or fixtures to create the test data objects.

Problem details

Before running each test, Django resets the database to its initial state, as it would be after running migrations. Most tests will need the creation of some initial objects to set the state. Rather than creating different initial objects for different scenarios, a common set of initial objects are usually created.

This can quickly get unmanageable in a large test suite. The sheer variety of such initial objects can be hard to read and later understand. This leads to hard-to-find bugs in the test data itself.

Being such a common problem, there are several means to reduce the clutter and write clearer test cases.

Solution details

The first solution we will take a look at is what is given in the Django documentation...

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