Question

我有2个模特：场地和活动。 Venue has_many：events and event belongs_to：venue。

我的活动/新表单包含以下字段

日期（填充当前日期）
时间（填充当前时间）
标题（空）
场地（填充了开发数据库中的场地表）

现在我正试图用RSpec和Capybara测试这个。这是我的特色：

require 'spec_helper'

feature "Events" do
  let(:venue) { FactoryGirl.create(:venue) }
  let(:event) { FactoryGirl.create(:event, venue: venue) }

  scenario "Creating event as guest" do
    visit root_path
    click_link "Submit Event"
    fill_in "Title", with: event.title
    click_button "Submit"
    expect(page).to have_content("Event has been created.")
    expect(page).to have_content(event.title)
  end
end

我的工厂看起来像这样：

FactoryGirl.define do
  factory :event do
    date "2014-02-27"
    time "10:00am"
    title "Slayer"
  end
end

FactoryGirl.define do
  factory :venue do
    name "Example Venue"
    url "http://www.example.com"
    address "123 Main St., Chicago, IL"
  end
end

当我运行此规范时，我收到以下错误：

 Failure/Error: click_button "Submit"
 ActionView::Template::Error:
   Couldn't find Venue without an ID

我猜这与Venue字段未在测试环境中填充这一事实有关？

Answer 1

使用let是懒惰的，所以你的数据库调用将在这里执行：

  scenario "Creating event as guest" do
    visit root_path
    click_link "Submit Event"
    fill_in "Title", with: event.title # <------------------- evaluated!
    click_button "Submit"
    expect(page).to have_content("Event has been created.")
    expect(page).to have_content(event.title)
  end

你可能想要的是这个：

feature "Events" do
  background do
    @event = FactoryGirl.create(:event, venue: FactoryGirl.create(:venue))
  end

  scenario "Creating event as guest" do
    visit root_path
    click_link "Submit Event"
    fill_in "Title", with: @event.title
    click_button "Submit"
    expect(page).to have_content("Event has been created.")
    expect(page).to have_content(@event.title)
  end
end

您也可以使用直接执行的let!，但我认为设置块更清晰。

如何从Capybara的数据库填充下拉列表中选择一个值？

1 个答案: