Hands-On RESTful Web Services with ASP.NET Core 3

Refactoring testing classes

After implementing the ItemsRepositoryTests type, in Chapter 8, Building the Data Access Layer, you might notice that we are using a recurring pattern in the ItemRepositoryTests class:

...   var options = new DbContextOptionsBuilder<CatalogContext>()                .UseInMemoryDatabase(databaseName: "should_get_data")                .Options;            await using var context = new TestCatalogContext(options);            context.Database.EnsureCreated();            var sut = new ItemRepository(context);...

The preceding snippet has been replicated in every test method written up to now. It is possible to improve our test code by extracting the implementation in a different type. The xunit framework provides a way to share test contexts between test methods of the same test ...