public void AddCustomerShouldAdd()
{
//arrange
var options = new DbContextOptionsBuilder <SoilMatesContext>().UseInMemoryDatabase("AddCustomerShouldAdd").Options;
using var testContext = new SoilMatesContext(options);
repo = new DBrepo(testContext);
//act
repo.AddCustomer(testCustomer);
//assert
using var assertContext = new SoilMatesContext(options);
Assert.NotNull(assertContext.Customers.SingleAsync(n => n.Name == testCustomer.Name));
}
