ruby-on-rails - 使用 capybara 测试表单 text_field 的存在

Question

我有以下表格，我想检查文本字段是否存在。我怎样才能做到这一点 ？

<%= form_for(ownership, remote: true) do |f| %>
  <div>
    <%= f.text_field :confirm, value: nil %>
    <%= f.hidden_field :start_date, value: Time.now %>
  </div>
  <%= f.submit t('button.ownership.take.confirmation'), class: "btn btn-small"%>
<% end %>

这是我的测试：

describe "for not confirmed ownership" do

  before do
    FactoryGirl.create(:agreed_ownership, user: current_user, product: product)
    be_signed_in_as(current_user)
    visit current_page
  end

  # it { should_not have_text_field(confirm) }
  it { should_not have_button(t('button.ownership.take.confirmation')) }
end

Answer 1

You'd use a has_css? expectation:

it "should have the confirm input field" do
  visit current_page

  expect(page).to have_css('input[type="text"]')
end

You can use additional jQuery-style selectors to filter for other attributes on the input field, too. For example, 'input[type="text"][name*="confirm"]' would select for confirm appearing in the input field's name attribute.

To set an expectation the field isn't present, you'd use to_not on your expectation: expect(page).to_not have_css('input[type="text"]')

Bonus: Here's the older, should-style syntax:

it "should have the confirm input field" do
  visit current_page

  page.should have_css('input[type="text"]')
end

it "shouldn't have the confirm input field" do
  visit current_page

  page.should_not have_css('input[type="text"]')
end