lib/pundit/matchers/actions_matcher.rb in pundit-matchers-3.0.0.beta3 vs lib/pundit/matchers/actions_matcher.rb in pundit-matchers-3.0.0.beta4

@@ -8,10 +8,12 @@
     class ActionsMatcher < BaseMatcher
       # Error message when actions are not implemented in a policy.
       ACTIONS_NOT_IMPLEMENTED_ERROR = "'%<policy>s' does not implement %<actions>s"
       # Error message when at least one action must be specified.
       ARGUMENTS_REQUIRED_ERROR = 'At least one action must be specified'
+      # Error message when only one action may be specified.
+      ONE_ARGUMENT_REQUIRED_ERROR = 'Only one action may be specified'
 
       # Initializes a new instance of the ActionsMatcher class.
       #
       # @param expected_actions [Array<String, Symbol>] The expected actions to be checked.
       #
@@ -19,9 +21,20 @@
       def initialize(*expected_actions)
         raise ArgumentError, ARGUMENTS_REQUIRED_ERROR if expected_actions.empty?
 
         super()
         @expected_actions = expected_actions.flatten.map(&:to_sym).sort
+      end
+
+      # Ensures that only one action is specified.
+      #
+      # @raise [ArgumentError] If more than one action is specified.
+      #
+      # @return [ActionsMatcher] The object itself.
+      def ensure_single_action!
+        raise ArgumentError, ONE_ARGUMENT_REQUIRED_ERROR if expected_actions.size > 1
+
+        self
       end
 
       private
 
       attr_reader :expected_actions