Unit testing

The test-driven development (TDD) pattern dictates that the business requirements and the granular use-cases defined by these requirements should be initially reflected on unit test fixtures. This allows a mobile application to grow/evolve within the defined borders of these assertive unit test models. Whether following a TDD strategy or implementing tests to ensure the stability of the development pipeline, unit tests are fundamental components of a development project.

Figure 4: Unit test project templates

Xamarin Studio and Visual Studio both provide a number of test project templates targeting different areas of a cross-platform project. In Xamarin cross-platform projects, unit tests can be categorized into two groups: platform-agnostic and platform-specific testing.

Platform-agnostic unit tests

Platform-agnostic components, such as portable class libraries containing shared logic for Xamarin applications, can be tested using the common unit test projects targeting the .NET...