From a8009c6d0f8607121b975ead5ed375cf30cab1ef Mon Sep 17 00:00:00 2001
From: Takayuki Nakata <f.seasons017@gmail.com>
Date: Tue, 26 Nov 2019 09:32:22 +0900
Subject: [PATCH] Fix making an extra db file after testing for sqlite3

Testing for sqlite3 makes an extra db file `primary.sqlite3` as below.
```
$ bundle exec rake test:sqlite3
(snip)
$ git status
On branch test
Untracked files:
  (use "git add <file>..." to include in what will be committed)

        db/
```
---
 .../connection_handlers_multi_pool_config_test.rb               | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/activerecord/test/cases/connection_adapters/connection_handlers_multi_pool_config_test.rb b/activerecord/test/cases/connection_adapters/connection_handlers_multi_pool_config_test.rb
index 1a08483399..6f5742c64b 100644
--- a/activerecord/test/cases/connection_adapters/connection_handlers_multi_pool_config_test.rb
+++ b/activerecord/test/cases/connection_adapters/connection_handlers_multi_pool_config_test.rb
@@ -11,7 +11,7 @@ module ActiveRecord
       fixtures :people
 
       def setup
-        @writing_handler = ActiveRecord::Base.connection_handlers[:writing]
+        @writing_handler = ConnectionHandler.new
       end
 
       def teardown