(PUP-1028) Specify various ways of matching nodes

There were no tests that tried to specify how node statements are
selected. This adds coverage for various ways in which a node statements
can match a given node object and varifies that the future evaluator and
the current evaluator produce the same results.

There are 2 cases where the future evaluator isn't able to handle the
same node statements: using numbers. One case, where a name begins with
a number, seems completely reasonable. The other case, where the name is
a valid number, seems like an arbitrary restriction and so we need to
discuss.