Manages a null filter clause, which carries out no filtering of data
Inheritance: IFilterClause
 public void TestAddMulitplePropStringFilterTextBox()
 {
     //---------------Set up test pack-------------------
     IFilterClause nullClause = new DataViewNullFilterClause();
     IFilterControl filterControl = GetControlFactory().CreateFilterControl();
     //---------------Execute Test ----------------------
     List<string> props = new List<string>{"TestColumn"};
     ITextBox tb = filterControl.AddMultiplePropStringTextBox("Test:", props);
     tb.Text = "";
     //---------------Test Result -----------------------
     Assert.AreEqual(nullClause.GetFilterClauseString(), filterControl.GetFilterClause().GetFilterClauseString());
     Assert.AreEqual(1, filterControl.FilterControls.Count);
     //---------------Tear Down -------------------------          
 }
        public void TestAddStringFilterComboBox()
        {
            //---------------Set up test pack-------------------
            IFilterClause nullClause = new DataViewNullFilterClause();
            IFilterControl filterControl = GetControlFactory().CreateFilterControl();
            //---------------Execute Test ----------------------
            filterControl.AddStringFilterComboBox("Test:", "TestColumn", new ArrayList(), true);
            //---------------Test Result -----------------------
            Assert.AreEqual(nullClause.GetFilterClauseString(), filterControl.GetFilterClause().GetFilterClauseString());

            //---------------Tear Down -------------------------          
        }
        public void TestAddEnumFilterComboBox()
        {
            //---------------Set up test pack-------------------
            IFilterClause nullClause = new DataViewNullFilterClause();
            IFilterControl filterControl = GetControlFactory().CreateFilterControl();
            //---------------Execute Test ----------------------
            filterControl.AddEnumFilterComboBox("Test:", "TestColumn", typeof(PurchaseOrderStatus));
            //---------------Test Result -----------------------
            Assert.AreEqual(nullClause.GetFilterClauseString(), filterControl.GetFilterClause().GetFilterClauseString());

            //---------------Tear Down -------------------------          
        }