public void FilterBy()
{
var items = new List <MyFilterableItem> {
new MyFilterableItem {
MyString = "A", Age = 40
},
new MyFilterableItem {
MyString = "B", Age = 20
},
new MyFilterableItem {
MyString = "C", Age = 30
},
};
var source = new ListCollectionViewEx(items);
var commands = new ListCollectionViewCommands(source);
source.FilterBy <MyFilterableItem>(p => p.Age > 20);
Assert.AreEqual("A", ((MyFilterableItem)source[0]).MyString);
Assert.AreEqual("C", ((MyFilterableItem)source[1]).MyString);
commands.ClearFilterCommand.Execute(null);
Assert.AreEqual("A", ((MyFilterableItem)source[0]).MyString);
Assert.AreEqual("B", ((MyFilterableItem)source[1]).MyString);
Assert.AreEqual("C", ((MyFilterableItem)source[2]).MyString);
}
public void Edit_And_CancelEdit()
{
var item = new MyItemEditable {
MyString = "My value"
};
var items = new List <MyItemEditable> {
item
};
var source = new ListCollectionViewEx(items);
var commands = new ListCollectionViewCommands(source);
Assert.AreEqual(item, source.CurrentItem);
Assert.AreEqual(null, source.CurrentEditItem);
Assert.AreEqual("My value", ((MyItemEditable)source.CurrentItem).MyString);
commands.EditCommand.Execute(null);
item.MyString = "My new string value";
Assert.AreEqual("My new string value", ((MyItemEditable)source.CurrentItem).MyString);
Assert.AreEqual("My new string value", ((MyItemEditable)source.CurrentEditItem).MyString);
commands.CancelCommand.Execute(null);
Assert.AreEqual("My value", ((MyItemEditable)source.CurrentItem).MyString);
Assert.AreEqual(null, source.CurrentEditItem);
}
public void SortBy()
{
var items = new List <MyFilterableItem> {
new MyFilterableItem {
MyString = "A", Age = 40
},
new MyFilterableItem {
MyString = "B", Age = 20
},
new MyFilterableItem {
MyString = "C", Age = 30
},
};
var source = new ListCollectionViewEx(items);
var commands = new ListCollectionViewCommands(source);
commands.SortByCommand.Execute("Age");
Assert.AreEqual("B", ((MyFilterableItem)source[0]).MyString);
Assert.AreEqual("C", ((MyFilterableItem)source[1]).MyString);
Assert.AreEqual("A", ((MyFilterableItem)source[2]).MyString);
commands.SortByDescendingCommand.Execute("Age");
Assert.AreEqual("A", ((MyFilterableItem)source[0]).MyString);
Assert.AreEqual("C", ((MyFilterableItem)source[1]).MyString);
Assert.AreEqual("B", ((MyFilterableItem)source[2]).MyString);
}
public void Navigate_With_Commands_Update_CanExecute()
{
var items = new List <MySharedItem>();
var source = new ListCollectionViewEx(items);
var commands = new ListCollectionViewCommands(source);
Assert.AreEqual(false, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToLastCommand.CanExecute(null));
var itemA = new MySharedItem();
source.AddNewItem(itemA);
Assert.AreEqual(itemA, source.CurrentItem);
Assert.AreEqual(false, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToLastCommand.CanExecute(null));
var itemB = new MySharedItem();
source.AddNewItem(itemB);
Assert.AreEqual(itemB, source.CurrentItem);
Assert.AreEqual(true, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToLastCommand.CanExecute(null));
commands.MoveCurrentToPreviousCommand.Execute(null); // B => A
Assert.AreEqual(itemA, source.CurrentItem);
Assert.AreEqual(false, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToLastCommand.CanExecute(null));
commands.MoveCurrentToNextCommand.Execute(null); // A => B
Assert.AreEqual(itemB, source.CurrentItem);
Assert.AreEqual(true, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToLastCommand.CanExecute(null));
commands.MoveCurrentToFirstCommand.Execute(null);
Assert.AreEqual(itemA, source.CurrentItem);
Assert.AreEqual(false, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToNextCommand.CanExecute(null)); // not clear backstack
Assert.AreEqual(true, commands.MoveCurrentToLastCommand.CanExecute(null));
commands.MoveCurrentToLastCommand.Execute(null);
Assert.AreEqual(itemB, source.CurrentItem);
Assert.AreEqual(true, commands.MoveCurrentToFirstCommand.CanExecute(null));
Assert.AreEqual(true, commands.MoveCurrentToPreviousCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToNextCommand.CanExecute(null));
Assert.AreEqual(false, commands.MoveCurrentToLastCommand.CanExecute(null));
}
public void AddNew()
{
var items = new List <MySharedItem>();
var source = new ListCollectionViewEx(items);
var commands = new ListCollectionViewCommands(source);
Assert.AreEqual(0, items.Count);
commands.AddNewCommand.Execute(null);
Assert.AreEqual(1, items.Count);
Assert.AreEqual(typeof(MySharedItem), items[0].GetType());
}
