How to test generic method with moq

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C#

unit-testing

I have a method that I want to test with moq:

public List<T> GetValidRecords<T>(Entities context) where T: class, IGetListOfTables
{
    try
    {
        return context.Set<T>().Where(x => x.Valid == 1).ToList();
    }
    catch (Exception ex)
    {
        throw new Exception(ex.Message);
    }
}

I've created unit test:

[TestMethod]
public void GetValidRecords()
{
    var data = new List<tableName>
    {
        new tableName() {Valid= 1},
        new tableName() {Valid= 1}
    }.AsQueryable();

    var mockSet = new Mock<DbSet<tableName>>();
    mockSet.As<IQueryable<tableName>>().Setup(m => m.Provider).Returns(data.Provider);
    mockSet.As<IQueryable<tableName>>().Setup(m => m.Expression).Returns(data.Expression);
    mockSet.As<IQueryable<tableName>>().Setup(m => m.ElementType).Returns(data.ElementType);
    mockSet.As<IQueryable<tableName>>().Setup(m => m.GetEnumerator()).Returns(data.GetEnumerator());

    var mockContext = new Mock<ALMONEntitiesNew>();
    mockContext.Setup(x => x.tableName).Returns(mockSet.Object);
    var database = new Database();
    var numberOfRecords = database.GetValidRecords<tableName>(mockContext.Object);
    Assert.AreEqual(2, numberOfRecords.Count, "Wrong number of valid records.");
}

The problem is that I get actual number of records from table, and not moqed number. How can I fix it?