From dd48bf6f2548395845794cb71c7335870d1cbf91 Mon Sep 17 00:00:00 2001
From: Michael Miller <icy.arctic.fox@gmail.com>
Date: Sun, 16 Feb 2020 19:34:48 -0700
Subject: [PATCH] Fix subject not being memoized when using described_class

---
 src/spectator/dsl/groups.cr | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/spectator/dsl/groups.cr b/src/spectator/dsl/groups.cr
index 33c12a1..937e052 100644
--- a/src/spectator/dsl/groups.cr
+++ b/src/spectator/dsl/groups.cr
@@ -24,8 +24,16 @@ module Spectator
             {{what}}
           end
 
+          @%wrapper : ::Spectator::TypedValueWrapper({{what}})?
+
           def subject(*args)
-            described_class.new(*args)
+            if (wrapper = @%wrapper)
+              wrapper.value
+            else
+              described_class.new(*args).tap do |value|
+                @%wrapper = ::Spectator::TypedValueWrapper.new(value)
+              end
+            end
           end
         {% else %}
           def _spectator_implicit_subject(*args)