1 files changed, 33 insertions, 0 deletions
diff --git a/app/graphql/mutations/echo.rb b/app/graphql/mutations/echo.rb
new file mode 100644
index 00000000000..61d39009ba4
--- /dev/null
+++ b/app/graphql/mutations/echo.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Mutations
+  class Echo < BaseMutation
+    graphql_name 'EchoCreate'
+    description <<~DOC
+      A mutation that does not perform any changes.
+
+      This is expected to be used for testing of endpoints, to verify
+      that a user has mutation access.
+    DOC
+
+    argument :errors,
+             type: [::GraphQL::STRING_TYPE],
+             required: false,
+             description: 'Errors to return to the user.'
+
+    argument :messages,
+             type: [::GraphQL::STRING_TYPE],
+             as: :echoes,
+             required: false,
+             description: 'Messages to return to the user.'
+
+    field :echoes,
+          type: [::GraphQL::STRING_TYPE],
+          null: true,
+          description: 'Messages returned to the user.'
+
+    def resolve(**args)
+      args
+    end
+  end
+end