Asp.Net Core MVC Web应用程序中的单元测试

我很难弄清楚如何在我的MVC Web应用程序中进行单元测试。尽管这不是一个很难理解的概念，但是鉴于其多层体系结构，我无法确定是为此需要特定的框架还是需要遵循某些特定步骤。如果您能给我一些提示或代码片段，使我对应该实际做什么有一个想法，我将非常高兴。我将从您的项目中给您一个例子：

相位控制器

    public IActionResult Create()
    {

        return View();
    }

    [HttpPost]
    public IActionResult Create(Phase phase)
    {
        int releaseId = (int)TempData["id"];
        string connectionString = Configuration["ConnectionStrings:DefaultConnection"];
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            string sql = "CreatePhase";

            using (SqlCommand command = new SqlCommand(sql, connection))
            {
                command.CommandType = CommandType.StoredProcedure;

                // adding parameters
                SqlParameter parameter = new SqlParameter
                {
                    ParameterName = "@Name",
                    Value = phase.Name,
                    SqlDbType = SqlDbType.VarChar,
                    Size = 50
                };
                command.Parameters.Add(parameter);

                parameter = new SqlParameter
                {
                    ParameterName = "@ReleaseId",
                    Value = releaseId,
                    SqlDbType = SqlDbType.Int
                };
                command.Parameters.Add(parameter);

                connection.Open();
                command.ExecuteNonQuery();
                connection.Close();
            }
        }

        return RedirectToAction("Index", "Phase", new { id = releaseId });
    }

相模型

namespace Intersection.Models
{
    public class Phase
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int ReleaseId { get; set; }
       // public IEnumerable<Phase> phases { get; set; }
    }
}

以这两个为例-测试类的外观如何，以便正确测试Create（）方法（以及POST方法）？

编辑：

在@Nkosi的回复之后，我添加了与另一个控制器不同的方法：

public IActionResult Create()
    {
        List<Intersection.Models.Environment> environmentList = new List<Intersection.Models.Environment>();

        string connectionString = Configuration["ConnectionStrings:DefaultConnection"];
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();

            string sql = "ReadEnvironments";
            SqlCommand command = new SqlCommand(sql, connection);
            command.CommandType = CommandType.StoredProcedure;

            using (SqlDataReader dataReader = command.ExecuteReader())
            {
                while (dataReader.Read())
                {
                    Intersection.Models.Environment environment = new Intersection.Models.Environment();
                    environment.Id = Convert.ToInt32(dataReader["Id"]);
                    environment.Name = Convert.ToString(dataReader["Name"]);
                    environmentList.Add(environment);
                }
            }

            ViewBag.Environments = environmentList;
            return View();
        }
    }

    [HttpPost]
    public IActionResult Create(Application application)
    {
        string connectionString = Configuration["ConnectionStrings:DefaultConnection"];
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            string sql = "CreateApplication";

            using (SqlCommand command = new SqlCommand(sql, connection))
            {
                command.CommandType = CommandType.StoredProcedure;

                // adding parameters
                SqlParameter parameter = new SqlParameter
                {
                    ParameterName = "@Name",
                    Value = application.Name,
                    SqlDbType = SqlDbType.VarChar,
                    Size = 50
                };
                command.Parameters.Add(parameter);

                parameter = new SqlParameter
                {
                    ParameterName = "@Environment",
                    Value = application.Environment,
                    SqlDbType = SqlDbType.Int
                };
                command.Parameters.Add(parameter);

                connection.Open();
                command.ExecuteNonQuery();
                connection.Close();
            }
        }

        return RedirectToAction("Index", "Application");
    }