public void GetItemsReturnsASingleNullDataRowIfThereAreNoDataSetsRegistered()
{
DataBindingContext context = new DataBindingContext(Mocks.Stub<IConverter>());
List<IDataItem> items = new List<IDataItem>(context.GetItems(false));
Assert.Count(1, items);
Assert.AreSame(NullDataItem.Instance, items[0]);
}
public void RegisteredBindingsAreFetchedByItemsAccordingToStrategy()
{
ItemSequenceDataSet dataSet1 = new ItemSequenceDataSet(new IDataItem[] { new ScalarDataItem<int>(1, null, false), new ScalarDataItem<int>(2, null, false) }, 1);
ItemSequenceDataSet dataSet2 = new ItemSequenceDataSet(new IDataItem[] { new ScalarDataItem<int>(10, null, false), new ScalarDataItem<int>(20, null, false) }, 1);
DataBindingContext context = new DataBindingContext(new NullConverter());
IDataAccessor accessor1 = context.RegisterBinding(dataSet1, new DataBinding(0, null));
IDataAccessor accessor2 = context.RegisterBinding(dataSet2, new DataBinding(0, null));
List<IDataItem> combinatorialItems = new List<IDataItem>(context.GetItems(true));
Assert.Count(4, combinatorialItems);
Assert.AreEqual(1, accessor1.GetValue(combinatorialItems[0]));
Assert.AreEqual(10, accessor2.GetValue(combinatorialItems[0]));
Assert.AreEqual(1, accessor1.GetValue(combinatorialItems[1]));
Assert.AreEqual(20, accessor2.GetValue(combinatorialItems[1]));
Assert.AreEqual(2, accessor1.GetValue(combinatorialItems[2]));
Assert.AreEqual(10, accessor2.GetValue(combinatorialItems[2]));
Assert.AreEqual(2, accessor1.GetValue(combinatorialItems[3]));
Assert.AreEqual(20, accessor2.GetValue(combinatorialItems[3]));
context.Strategy = SequentialJoinStrategy.Instance;
List<IDataItem> sequentialItems = new List<IDataItem>(context.GetItems(true));
Assert.Count(2, sequentialItems);
Assert.AreEqual(1, accessor1.GetValue(sequentialItems[0]));
Assert.AreEqual(10, accessor2.GetValue(sequentialItems[0]));
Assert.AreEqual(2, accessor1.GetValue(sequentialItems[1]));
Assert.AreEqual(20, accessor2.GetValue(sequentialItems[1]));
}
public void AccessorObtainsAValueFromTheRow()
{
DataBinding binding = new DataBinding(0, null);
ScalarDataBinder binder = new ScalarDataBinder(binding, "name");
IDataSourceResolver resolver = Mocks.StrictMock<IDataSourceResolver>();
DataBindingContext context = new DataBindingContext(new NullConverter());
DataSource source = new DataSource("name");
source.AddDataSet(new ItemSequenceDataSet(new IDataItem[]
{
new ScalarDataItem<int>(42, null, false),
new ScalarDataItem<string>("42", null, false)
}, 1));
using (Mocks.Record())
{
Expect.Call(resolver.ResolveDataSource("name")).Return(source);
}
using (Mocks.Playback())
{
IDataAccessor accessor = binder.Register(context, resolver);
Assert.IsTrue(context.DataSets.Contains(source), "The data sets list should contain the source that was resolved during binder registration.");
List<IDataItem> items = new List<IDataItem>(context.GetItems(true));
Assert.Count(2, items);
Assert.AreEqual(42, accessor.GetValue(items[0]));
Assert.AreEqual("42", accessor.GetValue(items[1]));
}
}