Fix scoped detection in Connection#initialize

lib/graphql/pagination/connection.rb

@@ -22,10 +22,11 @@ class PaginationImplementationMissingError < GraphQL::Error
       attr_reader :context
 
       def context=(new_ctx)
-        current_runtime_state = Thread.current[:__graphql_runtime_info]
-        query_runtime_state = current_runtime_state[new_ctx.query]
-        @was_authorized_by_scope_items = query_runtime_state.was_authorized_by_scope_items
         @context = new_ctx
+        if @was_authorized_by_scope_items.nil?
+          @was_authorized_by_scope_items = detect_was_authorized_by_scope_items
+        end
+        @context
       end
 
       # @return [Object] the object this collection belongs to
@@ -90,13 +91,7 @@ def initialize(items, parent: nil, field: nil, context: nil, first: nil, after:
         else
           default_page_size
         end
-        @was_authorized_by_scope_items = if @context
-          current_runtime_state = Thread.current[:__graphql_runtime_info]
-          query_runtime_state = current_runtime_state[@context.query]
-          query_runtime_state.was_authorized_by_scope_items
-        else
-          nil
-        end
+        @was_authorized_by_scope_items = detect_was_authorized_by_scope_items
       end
 
       def was_authorized_by_scope_items?
@@ -226,6 +221,16 @@ def cursor_for(item)
 
       private
 
+      def detect_was_authorized_by_scope_items
+        if @context &&
+            (current_runtime_state = Thread.current[:__graphql_runtime_info]) &&
+            (query_runtime_state = current_runtime_state[@context.query])
+          query_runtime_state.was_authorized_by_scope_items
+        else
+          nil
+        end
+      end
+
       # @param argument [nil, Integer] `first` or `last`, as provided by the client
       # @param max_page_size [nil, Integer]
       # @return [nil, Integer] `nil` if the input was `nil`, otherwise a value between `0` and `max_page_size`

spec/graphql/pagination/connection_spec.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+require "spec_helper"
+
+describe GraphQL::Pagination::Connection do
+  describe "was_authorized_by_scope_ites?" do
+    it "doesn't raise an error for missing runtime state and it updates it if context is assigned later" do
+      context = GraphQL::Query.new(GraphQL::Schema, "{ __typename }").context
+      conn = GraphQL::Pagination::Connection.new([], context: context)
+      assert_nil conn.was_authorized_by_scope_items?
+
+      conn.context = context
+      assert_nil conn.was_authorized_by_scope_items?
+
+      Thread.current[:__graphql_runtime_info] = { context.query => OpenStruct.new(was_authorized_by_scope_items: true) }
+      conn.context = context
+      assert_equal true, conn.was_authorized_by_scope_items?
+    ensure
+      Thread.current[:__graphql_runtime_info] = nil
+    end
+  end
+end