public void Test_SetRootCreatesNewImmutableTree()
{
MockSyntaxTree tree = new MockSyntaxTree(
new FullNameNode(
new NameNode("Kallyn"),
new NameNode("Gowdy")
)
);
FullNameNode newFullName = new FullNameNode(
new NameNode("K"),
new NameNode("G")
);
SyntaxTree newTree = tree.SetRoot(newFullName);
Assert.NotNull(newTree);
Assert.IsType <MockSyntaxTree>(newTree);
Assert.NotSame(tree, newTree);
}
public void Test_InternalNodeCanBeSharedBetweenDifferentTrees()
{
NameNode firstName = new NameNode("Kallyn");
MockSyntaxTree tree = new MockSyntaxTree(
new FullNameNode(
firstName,
new NameNode("Gowdy")
)
);
Assert.Equal("Kallyn", tree.FullName.FirstName.ToString());
MockSyntaxTree newTree = tree.SetRoot(
new FullNameNode(
firstName,
new NameNode("G")
)
) as MockSyntaxTree;
Assert.NotNull(newTree);
Assert.NotSame(tree, newTree);
Assert.NotSame(tree.Root, newTree.Root);
Assert.NotSame(tree.Root.FirstName, firstName);
Assert.NotSame(newTree.Root.FirstName, firstName);
Assert.NotSame(tree.Root.FirstName, newTree.Root.FirstName);
Assert.NotEqual(tree, newTree);
Assert.NotEqual(tree.Root, newTree.Root);
Assert.Equal(tree.Root.FirstName, firstName);
Assert.Equal(newTree.Root.FirstName, firstName);
Assert.Equal(tree.Root.FirstName, newTree.Root.FirstName);
Assert.Same(tree.Root.FirstName.InternalNode, firstName.InternalNode);
}
