用黄瓜测试时，sql错误无法启动事务内的事务
我是黄瓜的新手，我正在学习BDD
当我尝试填写表单并创建记录时，会显示此sqlite错误，但是当我在浏览器中手动尝试代码时没有错误。
我正在使用rails 4。
这是我的控制器代码
class Admin::ItemsController < ApplicationController def index @items=Item.all end def new @item=Item.new end def create @item=Item.new items_params respond_to do |format| if @item.save format.html { redirect_to admin_items_path } else format.html { redirect_to new_admin_items_path } end end end private def items_params params.require(:item).permit(:name,:price) end end 这是我的function文件
Feature: Manage Items In order to make a store As an admin I want to create and manage items Scenario: Items List Given I go to the new admin item page And I fill in "Name" with "Shampoo" And I fill in "Price" with "50" When I press "Create" Then I should be on the admin items page And I should see "Shampoo"
和步骤定义
require File.expand_path(File.join(File.dirname(__FILE__), "..", "support", "paths")) Given /^I go to the (.+)$/ do |page_name| visit path_to(page_name) end And /^I fill in "([^\"]*)" with "([^\"]*)"$/ do |field, value| fill_in(field.gsub(' ', '_'), :with => value) end When /^I press "([^\"]*)"$/ do |button| click_button(button) end Then /^I should be on the (.+)$/ do |page_name| current_path.should == path_to(page_name) end And /^I should see "(.*?)"$/ do |arg1| page.should have_content(arg1) end
此错误显示在步骤4中，即单击创建按钮并调用项目#create时。
我不知道代码有什么问题，希望有人可以提供帮助。
更新：
我想问题是在黄瓜栏中弃用了https://github.com/cucumber/cucumber-rails/issues/231
完整追踪：
Using the default profile... WARNING: Nokogiri was built against LibXML version 2.7.8, but has dynamically loaded 2.9.0 DEPRECATION WARNING: ActionController::Integration is deprecated and will be removed, use ActionDispatch::Integration instead. (called from at /home/phanindra/.gem/ruby/1.9.1/gems/cucumber-rails-1.3.0/lib/cucumber/rails/world.rb:9) DEPRECATION WARNING: ActionController::IntegrationTest is deprecated and will be removed, use ActionDispatch::IntegrationTest instead. (called from at /home/phanindra/.gem/ruby/1.9.1/gems/cucumber-rails-1.3.0/lib/cucumber/rails/world.rb:9) Feature: Manage Items In order to make a store As an admin I want to create and manage items Scenario: Items List # features/manage_items.feature:6 DEPRECATION WARNING: #increment_open_transactions is deprecated and has no effect. (called from start at /home/phanindra/.gem/ruby/1.9.1/gems/database_cleaner-0.9.1/lib/database_cleaner/active_record/transaction.rb:11) Given I go to the new admin item page # features/step_definitions/item_steps.rb:3 And I fill in "Name" with "Shampoo" # features/step_definitions/item_steps.rb:7 And I fill in "Price" with "50" # features/step_definitions/item_steps.rb:7 When I press "Create" # features/step_definitions/item_steps.rb:11 SQLite3::SQLException: cannot start a transaction within a transaction: begin transaction (ActiveRecord::StatementInvalid) /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:353:in `block in begin_db_transaction' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:305:in `block in log' /home/phanindra/rails/activesupport/lib/active_support/notifications/instrumenter.rb:20:in `instrument' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb:300:in `log' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb:353:in `begin_db_transaction' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb:129:in `initialize' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb:17:in `new' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb:17:in `begin' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:231:in `begin_transaction' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:208:in `within_new_transaction' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction' /home/phanindra/rails/activerecord/lib/active_record/transactions.rb:209:in `transaction' /home/phanindra/rails/activerecord/lib/active_record/transactions.rb:319:in `with_transaction_returning_status' /home/phanindra/rails/activerecord/lib/active_record/transactions.rb:269:in `block in save' /home/phanindra/rails/activerecord/lib/active_record/transactions.rb:280:in `rollback_active_record_state!' /home/phanindra/rails/activerecord/lib/active_record/transactions.rb:268:in `save' /home/phanindra/rails/activerecord/lib/active_record/persistence.rb:37:in `create' ./app/controllers/admin/items_controller.rb:11:in `create' /home/phanindra/rails/actionpack/lib/action_controller/metal/implicit_render.rb:4:in `send_action' /home/phanindra/rails/actionpack/lib/abstract_controller/base.rb:189:in `process_action' /home/phanindra/rails/actionpack/lib/action_controller/metal/rendering.rb:10:in `process_action' /home/phanindra/rails/actionpack/lib/abstract_controller/callbacks.rb:18:in `block in process_action' /home/phanindra/rails/activesupport/lib/active_support/callbacks.rb:393:in `_run__143383953690284082__process_action__callbacks' /home/phanindra/rails/activesupport/lib/active_support/callbacks.rb:78:in `run_callbacks' /home/phanindra/rails/actionpack/lib/abstract_controller/callbacks.rb:17:in `process_action' /home/phanindra/rails/actionpack/lib/action_controller/metal/rescue.rb:29:in `process_action' /home/phanindra/rails/actionpack/lib/action_controller/metal/instrumentation.rb:31:in `block in process_action' /home/phanindra/rails/activesupport/lib/active_support/notifications.rb:158:in `block in instrument' /home/phanindra/rails/activesupport/lib/active_support/notifications/instrumenter.rb:20:in `instrument' /home/phanindra/rails/activesupport/lib/active_support/notifications.rb:158:in `instrument' /home/phanindra/rails/actionpack/lib/action_controller/metal/instrumentation.rb:30:in `process_action' /home/phanindra/rails/actionpack/lib/action_controller/metal/params_wrapper.rb:245:in `process_action' /home/phanindra/rails/activerecord/lib/active_record/railties/controller_runtime.rb:18:in `process_action' /home/phanindra/rails/actionpack/lib/abstract_controller/base.rb:136:in `process' /home/phanindra/rails/actionpack/lib/abstract_controller/rendering.rb:44:in `process' /home/phanindra/rails/actionpack/lib/action_controller/metal.rb:195:in `dispatch' /home/phanindra/rails/actionpack/lib/action_controller/metal/rack_delegation.rb:13:in `dispatch' /home/phanindra/rails/actionpack/lib/action_controller/metal.rb:231:in `block in action' /home/phanindra/rails/actionpack/lib/action_dispatch/routing/route_set.rb:77:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/routing/route_set.rb:77:in `dispatch' /home/phanindra/rails/actionpack/lib/action_dispatch/routing/route_set.rb:45:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/journey/router.rb:69:in `block in call' /home/phanindra/rails/actionpack/lib/action_dispatch/journey/router.rb:57:in `each' /home/phanindra/rails/actionpack/lib/action_dispatch/journey/router.rb:57:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/routing/route_set.rb:614:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/params_parser.rb:30:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/flash.rb:233:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/cookies.rb:443:in `call' /home/phanindra/rails/activerecord/lib/active_record/query_cache.rb:36:in `call' /home/phanindra/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb:632:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' /home/phanindra/rails/activesupport/lib/active_support/callbacks.rb:373:in `_run__2084705409073281596__call__callbacks' /home/phanindra/rails/activesupport/lib/active_support/callbacks.rb:78:in `run_callbacks' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/callbacks.rb:27:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/remote_ip.rb:76:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/debug_exceptions.rb:18:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/show_exceptions.rb:31:in `call' /home/phanindra/rails/railties/lib/rails/rack/logger.rb:32:in `call_app' /home/phanindra/rails/railties/lib/rails/rack/logger.rb:16:in `block in call' /home/phanindra/rails/activesupport/lib/active_support/tagged_logging.rb:67:in `block in tagged' /home/phanindra/rails/activesupport/lib/active_support/tagged_logging.rb:25:in `tagged' /home/phanindra/rails/activesupport/lib/active_support/tagged_logging.rb:67:in `tagged' /home/phanindra/rails/railties/lib/rails/rack/logger.rb:16:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/request_id.rb:21:in `call' /home/phanindra/rails/activesupport/lib/active_support/cache/strategy/local_cache.rb:72:in `call' /home/phanindra/rails/actionpack/lib/action_dispatch/middleware/static.rb:63:in `call' /home/phanindra/rails/railties/lib/rails/engine.rb:508:in `call' /home/phanindra/rails/railties/lib/rails/application.rb:95:in `call' ./features/step_definitions/item_steps.rb:12:in `/^I press "([^\"]*)"$/' features/manage_items.feature:10:in `When I press "Create"' Then I should be on the admin items page # features/step_definitions/item_steps.rb:15 And I should see "Shampoo" # features/step_definitions/item_steps.rb:19 Failing Scenarios: cucumber features/manage_items.feature:6 # Scenario: Items List 1 scenario (1 failed) 6 steps (1 failed, 2 skipped, 3 passed) 0m3.476s
看起来您正在使用DatabaseCleaner，它默认运行事务中的每个function。 同时，ActiveRecord本身在保存项目时启动事务。 不幸的是，SQLite不支持嵌套事务。
如果将DatabaseCleaner策略更改为:truncation ，则应避免此错误。 或者，您可以针对像PostgreSQL这样function更强大的数据库进行测试。
这对我有用。 正如Andy H建议的那样，编辑你的Gemfile以从github上的最后一个源获取。
gem 'database_cleaner', github: 'bmabey/database_cleaner'