DbContextBuilder

Uses the Builder pattern to create Entity Framework Core and classic DbContext instances using an in-memory database for testing purposes. With DbContextBuilder, you can easily set up a DbContext with predefined data, making it ideal for unit tests and integration tests without having to rely on an actual database whose data can be changed or deleted over time

Features

• Create DbContext instances with an in-memory database. By default, DbContextBuilder uses the EF Core InMemory provider. Use .UseSqlite() for a SQLite in-memory database, or pass in your own DbContextOptionsBuilder for other providers.

• Add your own data to the DbContext using the SeedWith<T> method

• Easily add random data using the SeedWithRandom<T> method. This method will create random data in your database to simulate real-world scenarios where a database will have more than just the data you seed with.

Installation

You can install the DbContextBuilder package via NuGet. Run the following command in the Package Manager Console:

Install-Package Wolfgang.DbContextBuilder

Usage

Here's a simple example of how to use DbContextBuilder to create a DbContext with seeded data:

// Create a DbContext with seeded random data and your test data
var context = await new DbContextBuilder<YourDbContext>()
	// Seed with 10 random entities
	.SeedWithRandom<YourEntity>(10)

	// Seed with specific data
	.SeedWith
	(
		new YourEntity
		{
			Id = 1,
			Name = "Test Entity"
		}
	)

	// Seed with 5 random entities
	.SeedWithRandom<YourEntity>(5)

	// Build the DbContext instance
	.BuildAsync();							

// Use the context in your tests
var sut = new YourService(context);