public void Go_back_from_end()
{
var sut = new NavigationHistory();
sut.Extend("a");
sut.Extend("b");
sut.Extend("c");
string item;
Assert.IsTrue(sut.GoBack(out item));
Assert.AreEqual("b", item);
Assert.IsTrue(sut.GoBack(out item));
Assert.AreEqual("a", item);
Assert.IsFalse(sut.GoBack(out item));
}
public void Go_forward_from_beginning()
{
var sut = new NavigationHistory();
sut.Extend("a");
sut.Extend("b");
sut.Extend("c");
string item;
sut.GoBack(out item);
sut.GoBack(out item);
Assert.IsTrue(sut.GoForward(out item));
Assert.AreEqual("b", item);
Assert.IsTrue(sut.GoForward(out item));
Assert.AreEqual("c", item);
}
public void Extend_after_going_back()
{
var sut = new NavigationHistory();
sut.Extend("a");
sut.Extend("b");
sut.Extend("c");
string item;
sut.GoBack(out item); // b
sut.Extend("x");
sut.Extend("y");
Assert.IsTrue(sut.GoBack(out item));
Assert.AreEqual("x", item);
Assert.IsTrue(sut.GoBack(out item));
Assert.AreEqual("b", item);
Assert.IsTrue(sut.GoForward(out item));
Assert.AreEqual("x", item);
Assert.IsTrue(sut.GoForward(out item));
Assert.AreEqual("y", item);
}
void NavigateHistory(bool forward)
{
var dtState = decompilerTextView.GetState();
if (dtState != null)
{
history.UpdateCurrent(new NavigationState(dtState));
}
var newState = forward ? history.GoForward() : history.GoBack();
ignoreDecompilationRequests = true;
treeView.SelectedItems.Clear();
foreach (var node in newState.TreeNodes)
{
treeView.SelectedItems.Add(node);
}
if (newState.TreeNodes.Any())
{
treeView.FocusNode(newState.TreeNodes.First());
}
ignoreDecompilationRequests = false;
DecompileSelectedNodes(newState.ViewState, false);
}
