public void NodeIsNotLeaf()
{
var sut = RoseTree.Node <Version, Guid>(new Version(2, 0));
var actual = sut.IsLeaf();
Assert.False(actual.ToBool());
}
public void NodeIsNode()
{
var sut =
RoseTree.Node <Guid, Version>(
new Guid(0x90B5DF4F, 0xE996, 0x416E, 0xB6, 0x77, 0xEF, 0x4F, 0x38, 0x5E, 0x03, 0xC3));
var actual = sut.IsNode();
Assert.True(actual.ToBool());
}
public void MatchNode()
{
IRoseTree <string, int> tree =
RoseTree.Node("foo",
new RoseLeaf <string, int>(42),
new RoseLeaf <string, int>(1337));
int actual = tree.Accept(new MatchStringNodeVisitor());
Assert.Equal(3, actual);
}
public void CataNode()
{
IRoseTree <string, int> tree =
RoseTree.Node(
"foo",
new RoseLeaf <string, int>(42),
new RoseLeaf <string, int>(1337));
int actual = tree.Cata((x, xs) => x.Length + xs.Sum(), x => x);
Assert.Equal(1382, actual);
}
public void UseMeertensTree()
{
IRoseTree <Unit, int> meertensTree =
RoseTree.Node(Unit.Instance,
RoseTree.Node(Unit.Instance,
RoseTree.Node(Unit.Instance,
new RoseLeaf <Unit, int>(2112)),
new RoseLeaf <Unit, int>(42),
new RoseLeaf <Unit, int>(1337),
new RoseLeaf <Unit, int>(90125)),
RoseTree.Node(Unit.Instance,
new RoseLeaf <Unit, int>(1984)),
new RoseLeaf <Unit, int>(666));
Assert.False(meertensTree.IsLeaf().ToBool());
}
public void MenuExample()
{
IRoseTree <string, string> editMenuTemplate =
RoseTree.Node("Edit",
RoseTree.Node("Find and Replace",
new RoseLeaf <string, string>("Find"),
new RoseLeaf <string, string>("Replace")),
RoseTree.Node("Case",
new RoseLeaf <string, string>("Upper"),
new RoseLeaf <string, string>("Lower")),
new RoseLeaf <string, string>("Cut"),
new RoseLeaf <string, string>("Copy"),
new RoseLeaf <string, string>("Paste"));
var commandStore = new CommandStore();
IRoseTree <string, Command> editMenu =
from name in editMenuTemplate
select commandStore.Lookup(name);
var roundTripped = from command in editMenu
select command.Name;
Assert.Equal(editMenuTemplate, roundTripped);
}