multiplex.rb in graphql-1.10.0.pre2

- old
+ new

@@ -93,10 +93,11 @@
             finish_query(data_result, query, multiplex)
             # Get the Query::Result, not the Hash
             query.result
           end
         rescue Exception
+          # TODO rescue at a higher level so it will catch errors in analysis, too
           # Assign values here so that the query's `@executed` becomes true
           queries.map { |q| q.result_values ||= {} }
           raise
         end
 
@@ -171,9 +172,18 @@
         #
         # It yields when the queries should be executed, then runs teardown.
         def instrument_and_analyze(multiplex)
           GraphQL::Execution::Instrumentation.apply_instrumenters(multiplex) do
             schema = multiplex.schema
+            if schema.interpreter? && schema.analysis_engine != GraphQL::Analysis::AST
+              raise <<-ERR
+Can't use `GraphQL::Execution::Interpreter` without `GraphQL::Analysis::AST`, please add this plugin to your schema:
+
+    use GraphQL::Analysis::AST
+
+For information about the new analysis engine: https://graphql-ruby.org/queries/ast_analysis.html
+ERR
+            end
             multiplex_analyzers = schema.multiplex_analyzers
             if multiplex.max_complexity
               multiplex_analyzers += if schema.using_ast_analysis?
                 [GraphQL::Analysis::AST::MaxQueryComplexity]
               else