Build Robust Web Apps in the Real WakeUpAndCode.com.

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Presentation transcript:

Build Robust Web Apps in the Real WakeUpAndCode.com

Why Unit Testing? > Getting Started > Writing and Running Tests > Mocking What’s Next?

> Nothing new to learn > Error-prone > Expensive > Slower

> Less human error > Faster! > Decreasing costs > Learning curve

Legacy New/ Improved Design Patterns S.O.L.I.D.TDDRefactorRestructure SRP OCP LSP ISP DIP

Source:

Why Unit Testing? > Getting Started > Writing and Running Tests > Mocking What’s Next?

Unit TestsIntegration TestsUI Tests

xUnit.net references Web App being tested

public test class [Fact] for public methods without parameters [Theory] and [InlineData] for methods with parameters

Build Solution Run Tests in Test Explorer

Verify actual result against expected result Note “var” keyword

Verify that expected view equal to returned view

Temporarily ignore tests with an optional message.

Correct Views? Redirect to URL? Correct Models? HTTP Code? Mock Depen- dencies! Model Populated?

Mocks Pre-programmed with expected results, doesn’t actually connect to DB, behavior verification. Fakes Working examples, but not production-ready (e..g in-memory database) Stubs Provides canned answers

Smoke Tests New Features Edge Cases

Cost of Adding Unit Tests Cost of Not Having Unit Tests Bugs Features Expenses

Dependency Injection Inversion of Control

Views & ViewModels Controllers Service Layer Repository Layer Entity Framework (ORM) SQL Server (database)

60 to 80% coverage ok?

Why Unit Testing? > Getting Started > Writing and Running Tests > Mocking What’s Next?

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