public void GridRowNumberConverter_Convert_WhenInputNotDataGridRow_ReturnsMinus1()
{
//------------Setup for test--------------------------
var converter = new GridRowNumberConverter();
DataGrid dataGrid = new DataGrid { AutoGenerateColumns = true };
var itemsSource = new List<string> { "Item 1 ", "Item 2" };
dataGrid.ItemsSource = itemsSource;
dataGrid.SelectedItem = itemsSource[0];
var row = new Object();
//------------Execute Test---------------------------
var result = converter.Convert(row, typeof(string), null, CultureInfo.CurrentCulture);
//------------Assert Results-------------------------
Assert.AreEqual(-1, result);
}
public void GridRowNumberConverter_Convert_WhenValidRow_ReturnsRowIndex()
{
var converter = new GridRowNumberConverter();
DataGrid dataGrid = new DataGrid { AutoGenerateColumns = true };
var itemsSource = new List<string> { "Item 1 ", "Item 2" };
dataGrid.ItemsSource = itemsSource;
dataGrid.SelectedItem = itemsSource[0];
IItemContainerGenerator generator = dataGrid.ItemContainerGenerator;
var position = generator.GeneratorPositionFromIndex(0);
using(generator.StartAt(position, GeneratorDirection.Forward, true))
{
foreach(object o in dataGrid.Items)
{
DependencyObject dp = generator.GenerateNext();
generator.PrepareItemContainer(dp);
}
}
var row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(dataGrid.SelectedItem);
//------------Execute Test---------------------------
var result = converter.Convert(row, typeof(string), null, CultureInfo.CurrentCulture);
//------------Assert Results-------------------------
Assert.AreEqual(1, result);
}