Check pending, skip, and reason tags for reason

src/spectator/example.cr

@@ -89,7 +89,7 @@ module Spectator
       if pending?
         Log.debug { "Skipping example #{self} - marked pending" }
         @finished = true
-        return @result = PendingResult.new(tags[:pending] || PendingResult::DEFAULT_REASON)
+        return @result = PendingResult.new(pending_reason)
       end
 
       previous_example = @@current

src/spectator/node.cr

@@ -7,6 +7,9 @@ module Spectator
   # This is commonly an `Example` or `ExampleGroup`,
   # but can be anything that should be iterated over when running the spec.
   abstract class Node
+    # Default text used if none was given by the user for skipping a node.
+    DEFAULT_PENDING_REASON = "No reason given"
+
     # Location of the node in source code.
     getter! location : Location
 
@@ -46,6 +49,11 @@ module Spectator
       tags.has_key?(:pending) || tags.has_key?(:skip)
     end
 
+    # Gets the reason the node has been marked as pending.
+    def pending_reason
+      tags[:pending]? || tags[:skip]? || tags[:reason]? || DEFAULT_PENDING_REASON
+    end
+
     # Constructs the full name or description of the node.
     # This prepends names of groups this node is part of.
     def to_s(io)