Require each file separately -- to make sure they aren't accidentally…

… making each other pass

spec/graphql/autoload_spec.rb

@@ -50,14 +50,12 @@ def self.eager_load!
   describe "loading nested files in the repo" do
     it "can load them individually" do
       files_to_load = Dir.glob("lib/**/tracing/*.rb")
-      require_script = "".dup
+      assert_equal 24, files_to_load.size, "It found all the expected files"
       files_to_load.each do |file|
         require_path = file.sub("lib/", "").sub(".rb", "")
-        require_script << "require \"#{require_path}\";\n"
+        stderr_and_stdout, _status = Open3.capture2e("ruby -Ilib -e 'require \"#{require_path}\"'")
+        assert_equal "", stderr_and_stdout, "It loads #{require_path.inspect} in isolation"
       end
-      stderr_and_stdout, _status = Open3.capture2e("ruby -Ilib -e '#{require_script}'")
-      assert_equal 24, files_to_load.size, "It found all the expected files"
-      assert_equal "", stderr_and_stdout
     end
   end
 end