使用 rspec 测试文件上传 - rails

Question

我想在 Rails 中测试文件上传，但不知道该怎么做。

这是控制器代码：

def uploadLicense
    #Create the license object
    @license = License.create(params[:license]) 


    #Get Session ID
    sessid = session[:session_id]

    puts "\n\nSession_id:\n#{sessid}\n"

    #Generate a random string
    chars = ("a".."z").to_a + ("A".."Z").to_a + ("0".."9").to_a
    newpass = ""
    1.upto(5) { |i| newpass << chars[rand(chars.size-1)] }

    #Get the original file name
    upload=params[:upload]
    name =  upload['datafile'].original_filename 

    @license.format = File.extname(name)

    #calculate license ID and location
    @license.location = './public/licenses/' + sessid + newpass + name 

    #Save the license file
    #Fileupload.save(params[:upload], @license.location) 
    File.open(@license.location, "wb") { |f| f.write(upload['datafile'].read) }

     #Set license ID
    @license.license_id = sessid + newpass

    #Save the license
    @license.save

    redirect_to :action => 'show', :id => @license.id 
end

我已经尝试过这个规范，但它不起作用：

it "can upload a license and download a license" do
    file = File.new(Rails.root + 'app/controllers/lic.xml')
    license = HashWithIndifferentAccess.new
    license[:datafile] = file
    info = {:id => 4}
    post :uploadLicense, {:license => info, :upload => license}
end

如何使用 rspec 模拟文件上传？

Answer 1

您可以使用fixture_file_upload 方法来测试文件上传： 将您的测试文件放入 "{Rails.root}/spec/fixtures/files" 目录

before :each do
  @file = fixture_file_upload('files/test_lic.xml', 'text/xml')
end

it "can upload a license" do
  post :uploadLicense, :upload => @file
  response.should be_success
end

如果您希望文件格式为 params['upload']['datafile']

it "can upload a license" do
  file = Hash.new
  file['datafile'] = @file
  post :uploadLicense, :upload => file
  response.should be_success
end

Answer 2

我不确定您是否可以单独使用 RSpec 测试文件上传。你试过Capybara吗？

使用请求规范中的 capybara 的 attach_file 方法很容易测试文件上传。

例如（此代码仅供演示）：

it "can upload a license" do
  visit upload_license_path
  attach_file "uploadLicense", /path/to/file/to/upload
  click_button "Upload License"
end

it "can download an uploaded license" do
  visit license_path
  click_link "Download Uploaded License"
  page.should have_content("Uploaded License")
end

Answer 3

如果包含 Rack::Test*，只需包含测试方法

describe "my test set" do
  include Rack::Test::Methods

那么你可以使用 UploadedFile 方法：

post "/upload/", "file" => Rack::Test::UploadedFile.new("path/to/file.ext", "mime/type")

*注意：我的示例基于 Sinatra，它扩展了 Rack，但应该与 Rails 一起使用，Rails 也使用 Rack、TTBOMK

Answer 4

我没有使用 RSpec 完成此操作，但我确实有一个 Test::Unit 测试，它可以为上传照片执行类似的操作。我将上传的文件设置为ActionDispatch::Http::UploadedFile的实例，如下：

test "should create photo" do
  setup_file_upload
  assert_difference('Photo.count') do
    post :create, :photo => @photo.attributes
  end
  assert_redirected_to photo_path(assigns(:photo))
end


def setup_file_upload
  test_photo = ActionDispatch::Http::UploadedFile.new({
    :filename => 'test_photo_1.jpg',
    :type => 'image/jpeg',
    :tempfile => File.new("#{Rails.root}/test/fixtures/files/test_photo_1.jpg")
  })
  @photo = Photo.new(
    :title => 'Uploaded photo', 
    :description => 'Uploaded photo description', 
    :filename => test_photo, 
    :public => true)
end

类似的东西也可能对你有用。

Answer 5

这就是我使用Rails 6、RSpec 和Rack::Test::UploadedFile 的方式

describe 'POST /create' do
  it 'responds with success' do
    post :create, params: {
      license: {
        picture: Rack::Test::UploadedFile.new("#{Rails.root}/spec/fixtures/test-pic.png"),
        name: 'test'
      }
    }

    expect(response).to be_successful
  end
end

DO NOT include ActionDispatch::TestProcess 或任何其他代码，除非您确定您所包含的内容。

Answer 6

我必须添加这两个包含才能使其正常工作：

describe "my test set" do
  include Rack::Test::Methods
  include ActionDispatch::TestProcess