public void TryMerge_WithBackspace_DoesNotWorkWhenInsertionIsEmpty()
{
var fakeInsertion =
new InsertTextCommand.InsertTextUndoableAction(BlockAt <TextBlock>(0).BeginCursor().ToHandle(),
"1234");
fakeInsertion.Do(Context);
Context.UndoStack.Clear();
var insertion =
new InsertTextCommand.InsertTextUndoableAction(BlockAt <TextBlock>(0).BeginCursor().ToHandle(), "");
insertion.Do(Context);
var second =
new DeletePreviousCharacterCommand.DeletePreviousCharacterAction(
BlockAt <TextBlock>(0).BeginCaret(4).AsTextCursor());
DidYouKnow.That(insertion.TryMerge(Context, second)).Should().BeFalse();
}
public void TryMerge_WithBackspaceAction_Works()
{
BlockAt <TextBlock>(0).GetCaretAtStart().AsTextCursor().InsertText("This is text");
var insertion =
new InsertTextCommand.InsertTextUndoableAction(BlockAt <TextBlock>(0).BeginCursor().ToHandle(),
"Inserted String");
insertion.Do(Context);
var second =
new DeletePreviousCharacterCommand.DeletePreviousCharacterAction(
BlockAt <TextBlock>(0).BeginCaret(insertion.Text.Length).AsTextCursor());
DidYouKnow.That(insertion.TryMerge(Context, second)).
Should().BeTrue();
DidYouKnow.That(insertion.Text).Should()
.Be("Inserted Strin");
}
