public void MockDataList()
{
var personList = PersonList().AsQueryable();
var personDbSetMock = new Mock <DbSet <Customer> >();
personDbSetMock.As <IQueryable <Customer> >()
.Setup(m => m.Provider)
.Returns(personList.Provider);
personDbSetMock.As <IQueryable <Customer> >()
.Setup(m => m.Expression)
.Returns(personList.Expression);
personDbSetMock.As <IQueryable <Customer> >()
.Setup(m => m.ElementType)
.Returns(personList.ElementType);
personDbSetMock.As <IQueryable <Customer> >()
.Setup(m => m.GetEnumerator())
.Returns(personList.GetEnumerator());
var webContextMock =
new Mock <ContextoWebDb>();
webContextMock.Setup(m => m.Customer).
Returns(personDbSetMock.Object);
webContextMock.Setup(m => m.Set <Customer>()).
Returns(personDbSetMock.Object);
var repositorio =
new BaseRepositorio <Customer>(webContextMock.Object);
var personGetByID = repositorio
.ObtenerId(p => p.FirstName == "Name1");
personGetByID.Should().NotBeNull();
}