2 files changed, 7 insertions, 4 deletions
diff --git a/activerecord/test/cases/base_test.rb b/activerecord/test/cases/base_test.rb
index 4035347d4e..983a46a2d0 100644
--- a/activerecord/test/cases/base_test.rb
+++ b/activerecord/test/cases/base_test.rb
@@ -1141,11 +1141,14 @@ class BasicsTest < ActiveRecord::TestCase
   def test_clear_cache!
     # preheat cache
     c1 = Post.connection.schema_cache.columns("posts")
+    assert_not_equal 0, Post.connection.schema_cache.size
+
     ActiveRecord::Base.clear_cache!
+    assert_equal 0, Post.connection.schema_cache.size
+
     c2 = Post.connection.schema_cache.columns("posts")
-    c1.each_with_index do |v, i|
-      assert_not_same v, c2[i]
-    end
+    assert_not_equal 0, Post.connection.schema_cache.size
+
     assert_equal c1, c2
   end
 
diff --git a/activerecord/test/cases/json_serialization_test.rb b/activerecord/test/cases/json_serialization_test.rb
index 31691d83fc..d68e208617 100644
--- a/activerecord/test/cases/json_serialization_test.rb
+++ b/activerecord/test/cases/json_serialization_test.rb
@@ -23,7 +23,7 @@ class JsonSerializationTest < ActiveRecord::TestCase
   include JsonSerializationHelpers
 
   class NamespacedContact < Contact
-    column :name, :string
+    column :name, "string"
   end
 
   def setup