lib/rubocop/cop/mixin/minitest_exploration_helpers.rb in rubocop-minitest-0.34.0 vs lib/rubocop/cop/mixin/minitest_exploration_helpers.rb in rubocop-minitest-0.34.1

@@ -97,19 +97,21 @@
         node.each_descendant(:send).count do |send_node|
           assertion_method?(send_node)
         end
       end
 
+      # rubocop:disable Metrics/CyclomaticComplexity
       def assertion_method?(node)
-        return assertion_method?(node.expression) if node.assignment?
+        return assertion_method?(node.expression) if node.assignment? && node.respond_to?(:expression)
         return false if !node.send_type? && !node.block_type? && !node.numblock_type?
 
         ASSERTION_PREFIXES.any? do |prefix|
           method_name = node.method_name
 
           method_name.start_with?(prefix) || node.method?(:flunk)
         end
       end
+      # rubocop:enable Metrics/CyclomaticComplexity
 
       def lifecycle_hook_method?(node)
         node.def_type? && LIFECYCLE_HOOK_METHODS.include?(node.method_name)
       end
     end