Cleanup example name output

src/spectator/example.cr

@@ -82,6 +82,16 @@ module Spectator
       with context yield
     end
 
+    # Constructs the full name or description of the example.
+    # This prepends names of groups this example is part of.
+    def to_s(io)
+      if name?
+        super
+      else
+        io << "<anonymous>"
+      end
+    end
+
     # Exposes information about the example useful for debugging.
     def inspect(io)
       # Full example name.

src/spectator/spec_node.cr

@@ -53,7 +53,7 @@ module Spectator
 
       # Prefix with group's full name if the node belongs to a group.
       if (group = @group)
-        io << group
+        group.to_s(io)
 
         # Add padding between the node names
         # only if the names don't appear to be symbolic.
@@ -63,7 +63,7 @@ module Spectator
                          (name.starts_with?('#') || name.starts_with?('.')))
       end
 
-      io << name
+      name.to_s(io)
     end
   end
 end