Core package for MockQueryable extensions for mocking operations such ToListAsync, FirstOrDefaultAsync etc.
When writing tests for your application it is often desirable to avoid hitting the database. The extension allows you to achieve this by creating a context – with behavior defined by your tests – that makes use of in-memory data.
Extensions for mocking Entity Framework Core async queries like ToListAsync, FirstOrDefaultAsync, and more using popular mocking libraries such as Moq, NSubstitute, and FakeItEasy — all without hitting the database.
var mockDbSet = users.BuildMockDbSet();
// Moq
var repo = new TestDbSetRepository(mockDbSet.Object);
// NSubstitute / FakeItEasy
var repo = new TestDbSetRepository(mockDbSet);
🔧 Adding Custom Logic
Example: Custom FindAsync
mock.Setup(x => x.FindAsync(userId)).ReturnsAsync((object[] ids) =>
{
var id = (Guid)ids[0];
return users.FirstOrDefault(x => x.Id == id);
});
