Improve test coverage.

tests/pitfall.chk

@@ -0,0 +1,51 @@
+
+Welcome to Adventure!!  Would you like instructions?
+
+> n
+
+You are standing at the end of a road before a small brick building.
+Around you is a forest.  A small stream flows out of the building and
+down a gully.
+
+> seed 780351908
+Seed set to 780351908
+
+You're in front of building.
+
+> in
+
+You are inside a building, a well house for a large spring.
+
+There are some keys on the ground here.
+
+There is a shiny brass lamp nearby.
+
+There is food here.
+
+There is a bottle of water here.
+
+> xyzzy
+
+>>Foof!<<
+
+It is now pitch dark.  If you proceed you will likely fall into a pit.
+
+> s
+
+There is no way to go that direction.
+
+You fell into a pit and broke every bone in your body!
+
+Oh dear, you seem to have gotten yourself killed.  I might be able to
+help you out, but I've never really done this before.  Do you want me
+to try to reincarnate you?
+
+> n
+
+OK
+
+You scored 26 out of a possible 430, using 3 turns.
+
+You are obviously a rank amateur.  Better luck next time.
+
+To achieve the next higher rating, you need 20 more points.

tests/pitfall.log

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+## Death by pitfall
+n
+seed 780351908
+in
+xyzzy
+s
+n