lib/rubocop/cop/rspec/instance_variable.rb in rubocop-rspec-1.37.1 vs lib/rubocop/cop/rspec/instance_variable.rb in rubocop-rspec-1.38.0

@@ -56,28 +56,37 @@
 
         def_node_matcher :dynamic_class?, <<-PATTERN
           (block (send (const nil? :Class) :new ...) ...)
         PATTERN
 
+        def_node_matcher :custom_matcher?, <<-PATTERN
+          (block {
+            (send nil? :matcher sym)
+            (send (const (const nil? :RSpec) :Matchers) :define sym)
+          } ...)
+        PATTERN
+
         def_node_search :ivar_usage, '$(ivar $_)'
 
         def_node_search :ivar_assigned?, '(ivasgn % ...)'
 
         def on_block(node)
           return unless spec_group?(node)
 
           ivar_usage(node) do |ivar, name|
-            return if inside_dynamic_class?(ivar)
-            return if assignment_only? && !ivar_assigned?(node, name)
+            next if valid_usage?(ivar)
+            next if assignment_only? && !ivar_assigned?(node, name)
 
             add_offense(ivar)
           end
         end
 
         private
 
-        def inside_dynamic_class?(node)
-          node.each_ancestor(:block).any? { |block| dynamic_class?(block) }
+        def valid_usage?(node)
+          node.each_ancestor(:block).any? do |block|
+            dynamic_class?(block) || custom_matcher?(block)
+          end
         end
 
         def assignment_only?
           cop_config['AssignmentOnly']
         end