public void ShouldCreateAndFilter()
{
IOrFilter or;
IAndFilter filter;
or = new OrFilter(JobTable.Description.IsEqualTo("test"), JobTable.Description.IsEqualTo("test"));
filter = or.And(JobTable.Description.IsNull());
Assert.AreEqual(2, filter.Members.Count());
or = new OrFilter(JobTable.Description.IsEqualTo("test"), JobTable.Description.IsEqualTo("test"));
filter = or.And(JobTable.Description.IsNull().And(JobTable.Description.IsNull()));
Assert.AreEqual(3, filter.Members.Count());
or = new OrFilter(JobTable.Description.IsEqualTo("test"), JobTable.Description.IsEqualTo("test"));
filter = or.And(JobTable.Description.IsNull()).And(JobTable.Description.IsNull());
Assert.AreEqual(3, filter.Members.Count());
}