public void QueryEmptyValues()
{
InsertEmptyValues(false);
using (var context = GetAllTypesDataContext()) {
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryChar) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryChar) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryMemo) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryMemo) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryVarChar) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.BinaryVarChar) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Char) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Char) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Currency) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Currency) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Date) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Date) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.DateTime) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.DateTime) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Decimal) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Decimal) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Double) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Double) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Float) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Float) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Integer) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Integer) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Logical) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Logical) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Long) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Long) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.Memo) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.Memo) == false));
Assert.AreEqual(1, context.AllTypes.Count(x => VfpFunctions.Empty(x.VarChar) == true));
Assert.AreEqual(0, context.AllTypes.Count(x => VfpFunctions.Empty(x.VarChar) == false));
}
}