如何在單元測試中創建 sqlite 數據庫並在 class 完成所有測試后將其刪除 C# .net

Question

如何在單元測試中創建 SQLite 數據庫並在 class 完成所有測試后將其刪除 C# .net

我需要創建數據庫，在其中添加一些文件，並在單元測試 class 方法完成后將其刪除。

Answer 1

看這個教程： https ://dotnetcorecentral.com/blog/sqlite-for-unit-testing-in-net-core/

[Test]
public void Test_Get_By_Id()
{
    var connection = new SqliteConnection("DataSource=:memory:");
    connection.Open();

    var options = new DbContextOptionsBuilder<EmployeeContext>().UseSqlite(connection).Options;

    using (var context = new EmployeeContext(options))
    {
        context.Database.EnsureCreated();
    }

    using (var context = new EmployeeContext(options))
    {
        context.Employees.Add(new Employee { Id = 1, FirstName = "John", LastName = "Doe", Address = "123 Street", HomePhone = "111-111-1111", CellPhone = "222-222-2222" });
        context.SaveChanges();
    }

    using (var context = new EmployeeContext(options))
    {
        var provider = new EmployeeProvider(context);
        var employee = provider.Get(1);

        Assert.AreEqual("John", employee.FirstName);
    }
}

您創建一個內存數據庫，然后確保創建了數據庫，添加任何您想要檢查的內容，然后您可以執行任何查詢/斷言來檢查其是否按預期工作。

Answer 2

只需創建此方法並將“db”用於其他事實（測試）。 希望對你有用..

    private ApplicationDbContext GetContext()
    {
        var options = new DbContextOptionsBuilder().
            UseSqlite("Data Source = nameOfYourDatabase.db")
            .Options;

        var db = new ApplicationDbContext(options);

        db.Database.EnsureDeleted();
        db.Database.EnsureCreated();

        return db;
    }

    [Fact]
    public void CreateDatabaseTest()
    {
        using var db = GetContext();
    }