Taking 1 step in a deep context is working!

src/renderer/renderer.rs

@@ -151,7 +151,19 @@ mod tests {
             .iter()
             .cloned()
             .collect();
+        let deep_context: HashMap<&str, HashMap<&str, &str>> = [
+            ("cat", [("food", "meat")].iter().cloned().collect()),
+            ("dog", [("food", "meat")].iter().cloned().collect()),
+            ("tiger", [("food", "people")].iter().cloned().collect()),
+        ]
+        .iter()
+        .cloned()
+        .collect();
         assert_eq!(do_the_walk(&context, "cat"), &"kitty");
         assert_eq!(do_the_walk(&number_context, "tiger"), &3);
+        assert_eq!(
+            do_the_walk(&deep_context, "tiger"),
+            &[("food", "people")].iter().cloned().collect()
+        );
     }
 }