public void CompareValuesByProperties_ItemWithoutNullProperties_ReturnedSorted()
{
// Arrange
var firstItem = new ListItem {
FirstColumn = "A"
};
var secondItem = new ListItem {
FirstColumn = "B"
};
var list = new List <ListItem> {
secondItem, firstItem
};
var descriptor = typeof(ListItem).GetProperty(nameof(ListItem.FirstColumn));
var sortCollection = new[]
{
new ListSortDescription(GetPropertyDescriptor(descriptor), ListSortDirection.Ascending)
};
var comparer = ListObjectComparer.FromSort <ListItem>(new ListSortDescriptionCollection(sortCollection));
// Act
list.Sort(comparer.CompareValuesByProperties);
// Assert
list.Should().BeEquivalentTo(new List <ListItem> {
firstItem, secondItem
});
}
public void CompareValuesByProperties_ItemWithNullProperties_ReturnedNullFirst()
{
// Arrange
var itemWithNull = new ListItem {
FirstColumn = null
};
var itemWithValue = new ListItem {
FirstColumn = "Something"
};
var list = new List <ListItem> {
itemWithValue, itemWithNull
};
var descriptor = typeof(ListItem).GetProperty(nameof(ListItem.FirstColumn));
var sortCollection = new[]
{
new ListSortDescription(GetPropertyDescriptor(descriptor), ListSortDirection.Ascending)
};
var comparer = ListObjectComparer.FromSort <ListItem>(new ListSortDescriptionCollection(sortCollection));
// Act
list.Sort(comparer.CompareValuesByProperties);
// Assert
list.Should().BeEquivalentTo(new List <ListItem> {
itemWithNull, itemWithValue
});
}