Question

需要为链接图标重写Rspec测试。无法弄清楚如何正确引用元素

我目前的默认测试：

describe "Destroy action" do
  it {should have_link('Remove project', href: project_path(Project.first))}
  it "should be able to delete project" do
    expect do
      click_link('Remove project', match: :first)
    end.to change(Project, :count).by(-1)
  end
end

删除图片图标的帮助方法：

def delete_icon(height, width)
    link_to image_tag('delete.png', alt: 'Remove project', id:"delete_logo", height: "#    {height}", width: "#{width}"),@project, method: :delete, data: {confirm: "Burn it to the ground"}
end

我的部分观点：

%div.comments_sidebar
    %h2 #{@project.title} #{edit_icon} #{delete_icon("700px", "30px")}

Answer 1

首先，我认为你不应该在帮助器中使用实例变量。所以，我会像那样重写你的助手方法：

def delete_icon(project, height = <default height>, width = <default width>)
  link_to image_tag('delete.png', alt: 'Remove project', id: "delete_logo", height: height, width: width), project, method: :delete, data: { confirm: "Burn it to the ground" }
end

在你的测试中，使用nokogiri gem，你可以做类似的事情：

describe "delete_icon(project, height, width)" do
  let(:project) { <create a project> }

  it "creates a link with an image to remove given project" do
    link = Nokogiri::HTML(helper.delete_icon(project)).css('a')[0]
    image = link.css('img')[0]
    expect(link.attributes['href'].value).to eq(project_path(project))
    # check any other attributes for the link...
    expect(image.attributes['src'].value).to eq('/assets/delete.png')
    # check any other attributes for the image...
  end
end

您可以添加更多将特定高度和/或宽度传递给helper方法的示例，并将此断言放在单独的示例中。

如何使用Rspec测试链接图标

1 个答案: