1 files changed, 9 insertions, 2 deletions
diff --git a/activerecord/test/cases/relation_test.rb b/activerecord/test/cases/relation_test.rb
index b7486196c5..6399111be6 100644
--- a/activerecord/test/cases/relation_test.rb
+++ b/activerecord/test/cases/relation_test.rb
@@ -196,11 +196,14 @@ module ActiveRecord
     end
 
     test 'extending!' do
-      mod = Module.new
+      mod, mod2 = Module.new, Module.new
 
       assert relation.extending!(mod).equal?(relation)
-      assert [mod], relation.extending_values
+      assert_equal [mod], relation.extending_values
       assert relation.is_a?(mod)
+
+      relation.extending!(mod2)
+      assert_equal [mod, mod2], relation.extending_values
     end
 
     test 'extending! with empty args' do
@@ -249,5 +252,9 @@ module ActiveRecord
       assert relation.merge!(where: :foo).equal?(relation)
       assert_equal [:foo], relation.where_values
     end
+
+    test 'merge with a proc' do
+      assert_equal [:foo], relation.merge(-> { where(:foo) }).where_values
+    end
   end
 end