public void TestThatHeadsForRootWithTwoEdgesToChildIncludesChildTwice()
{
var root = new SimpleNode("root");
var child = new SimpleNode("child");
root.AddChild(child);
root.AddChild(child);
var graph = new GraphBuilder<SimpleNode>(GetChildren).Build(root);
Assert.AreEqual(2, graph.HeadsFor(root).Count());
}
public void TestThatRootHeadsAreReachableThroughEnumeration()
{
var root = new SimpleNode("root");
var child = new SimpleNode("child");
root.AddChild(child);
var graph = new GraphBuilder<SimpleNode>(GetChildren).Build(root);
CollectionAssert.Contains(new List<SimpleNode>(graph.HeadsFor(root)), child);
}
public void TestThatRequestForHeadsForUnknownNodeThrows()
{
var graph = new GraphBuilder<SimpleNode>(GetChildren).Build(new SimpleNode("root"));
graph.HeadsFor(new SimpleNode("dummy")); // should throw
}
