Use mattr_accessor in TestsDatabase instead of setup method

activemodel/test/cases/tests_database.rb

@@ -6,25 +6,35 @@ require 'active_record/fixtures'
 
 module ActiveModel
   module TestsDatabase
+    mattr_accessor :connected
+
     def self.included(base)
-      ActiveRecord::Base.logger = Logger.new("debug.log")
-      ActiveRecord::Base.establish_connection(:adapter => 'sqlite3', :database => ':memory:')
+      unless self.connected
+        setup_connection
+        setup_schema
+      end
 
       base.send :include, ActiveRecord::TestFixtures
-      base.setup :setup_database
     end
 
-    def setup_database
-      unless $schema_file_loaded
-        begin
-          # TODO : May the better way be with you
-          original, $stdout = $stdout, StringIO.new
-          load(SCHEMA_FILE)
-        ensure
-          $stdout = original
-        end
+    def self.setup_schema
+      original, $stdout = $stdout, StringIO.new
+      load(SCHEMA_FILE)
+    ensure
+      $stdout = original
+      self.connected = true
+    end
 
-        $schema_file_loaded = true
+    def self.setup_connection
+      defaults = { :database => ':memory:' }
+      begin
+        adapter = defined?(JRUBY_VERSION) ? 'jdbcsqlite3' : 'sqlite3'
+        options = defaults.merge :adapter => adapter, :timeout => 500
+        ActiveRecord::Base.establish_connection(options)
+      rescue Exception
+        $stderr.puts 'SQLite 3 unavailable; trying SQLite 2.'
+        options = defaults.merge :adapter => 'sqlite'
+        ActiveRecord::Base.establish_connection(options)
       end
     end
   end