Extend all test tasks to run against every configured test db (WIP)

lib/core_ext/test_multiple_adapters.rb

@@ -0,0 +1,42 @@
+require "byebug"
+
+module CoreExt
+  module TestMultipleAdapters
+    def perform(...)
+      #require APP_PATH
+      $LOAD_PATH << Rails::Command.root.join("test").to_s
+      require "test_helper"
+
+      Rails.application.config.database_configuration.each_pair do |name, config|
+        next unless name.start_with?('test_')
+
+        puts config['adapter']
+        ENV['DATABASE_URL'] = dbconfig_to_url(config)
+        byebug
+        super
+      end
+    end
+
+    alias_method :test, :perform
+
+    private
+
+    def dbconfig_to_url(cfg)
+      return cfg['url'] if cfg.has_key?("url")
+
+      config = cfg.transform_values { |v| URI.encode_www_form_component(v) }
+
+      username, password = config.delete('username'), config.delete('password')
+      auth = username ? "#{username}:#{password}" : ''
+      host, port = config.delete('host'), config.delete('port')
+      server = port ? "#{host}:#{port}" : host
+      url = "#{config.delete('adapter')}:"
+      url += "//#{auth}@#{server}" if auth || server
+      url += "/#{config.delete('database')}"
+      url += "?#{config.map { |k,v| "#{k}=#{v}" }.join('&')}" unless config.empty?
+    end
+  end
+end
+
+#require "rails/commands/test/test_command"
+#Rails::Command::TestCommand.prepend CoreExt::TestMultipleAdapters