apps/workbench/test/controllers/collections_controller_test.rb

   1 require 'test_helper'
   2
   3 class CollectionsControllerTest < ActionController::TestCase
   4   # These tests don't do state-changing API calls. Save some time by
   5   # skipping the database reset.
   6   reset_api_fixtures :after_each_test, false
   7   reset_api_fixtures :after_suite, true
   8
   9   include PipelineInstancesHelper
  10
  11   NONEXISTENT_COLLECTION = "ffffffffffffffffffffffffffffffff+0"
  12
  13   def config_anonymous enable
  14     Rails.configuration.anonymous_user_token =
  15       if enable
  16         api_fixture('api_client_authorizations')['anonymous']['api_token']
  17       else
  18         false
  19       end
  20   end
  21
  22   def stub_file_content
  23     # For the duration of the current test case, stub file download
  24     # content with a randomized (but recognizable) string. Return the
  25     # string, the test case can use it in assertions.
  26     txt = 'the quick brown fox ' + rand(2**32).to_s
  27     @controller.stubs(:file_enumerator).returns([txt])
  28     txt
  29   end
  30
  31   def collection_params(collection_name, file_name=nil)
  32     uuid = api_fixture('collections')[collection_name.to_s]['uuid']
  33     params = {uuid: uuid, id: uuid}
  34     params[:file] = file_name if file_name
  35     params
  36   end
  37
  38   def assert_hash_includes(actual_hash, expected_hash, msg=nil)
  39     expected_hash.each do |key, value|
  40       assert_equal(value, actual_hash[key], msg)
  41     end
  42   end
  43
  44   def assert_no_session
  45     assert_hash_includes(session, {arvados_api_token: nil},
  46                          "session includes unexpected API token")
  47   end
  48
  49   def assert_session_for_auth(client_auth)
  50     api_token =
  51       api_fixture('api_client_authorizations')[client_auth.to_s]['api_token']
  52     assert_hash_includes(session, {arvados_api_token: api_token},
  53                          "session token does not belong to #{client_auth}")
  54   end
  55
  56   def show_collection(params, session={}, response=:success)
  57     params = collection_params(params) if not params.is_a? Hash
  58     session = session_for(session) if not session.is_a? Hash
  59     get(:show, params, session)
  60     assert_response response
  61   end
  62
  63   test "viewing a collection" do
  64     show_collection(:foo_file, :active)
  65     assert_equal([['.', 'foo', 3]], assigns(:object).files)
  66   end
  67
  68   test "viewing a collection with spaces in filename" do
  69     show_collection(:w_a_z_file, :active)
  70     assert_equal([['.', 'w a z', 5]], assigns(:object).files)
  71   end
  72
  73   test "download a file with spaces in filename" do
  74     collection = api_fixture('collections')['w_a_z_file']
  75     fakepipe = IO.popen(['echo', '-n', 'w a z'], 'rb')
  76     IO.expects(:popen).with { |cmd, mode|
  77       cmd.include? "#{collection['uuid']}/w a z"
  78     }.returns(fakepipe)
  79     get :show_file, {
  80       uuid: collection['uuid'],
  81       file: 'w a z'
  82     }, session_for(:active)
  83     assert_response :success
  84     assert_equal 'w a z', response.body
  85   end
  86
  87   test "viewing a collection fetches related projects" do
  88     show_collection({id: api_fixture('collections')["foo_file"]['portable_data_hash']}, :active)
  89     assert_includes(assigns(:same_pdh).map(&:owner_uuid),
  90                     api_fixture('groups')['aproject']['uuid'],
  91                     "controller did not find linked project")
  92   end
  93
  94   test "viewing a collection fetches related permissions" do
  95     show_collection(:bar_file, :active)
  96     assert_includes(assigns(:permissions).map(&:uuid),
  97                     api_fixture('links')['bar_file_readable_by_active']['uuid'],
  98                     "controller did not find permission link")
  99   end
 100
 101   test "viewing a collection fetches jobs that output it" do
 102     show_collection(:bar_file, :active)
 103     assert_includes(assigns(:output_of).map(&:uuid),
 104                     api_fixture('jobs')['foobar']['uuid'],
 105                     "controller did not find output job")
 106   end
 107
 108   test "viewing a collection fetches jobs that logged it" do
 109     show_collection(:baz_file, :active)
 110     assert_includes(assigns(:log_of).map(&:uuid),
 111                     api_fixture('jobs')['foobar']['uuid'],
 112                     "controller did not find logger job")
 113   end
 114
 115   test "viewing a collection fetches logs about it" do
 116     show_collection(:foo_file, :active)
 117     assert_includes(assigns(:logs).map(&:uuid),
 118                     api_fixture('logs')['system_adds_foo_file']['uuid'],
 119                     "controller did not find related log")
 120   end
 121
 122   test "sharing auths available to admin" do
 123     show_collection("collection_owned_by_active", "admin_trustedclient")
 124     assert_not_nil assigns(:search_sharing)
 125   end
 126
 127   test "sharing auths available to owner" do
 128     show_collection("collection_owned_by_active", "active_trustedclient")
 129     assert_not_nil assigns(:search_sharing)
 130   end
 131
 132   test "sharing auths available to reader" do
 133     show_collection("foo_collection_in_aproject",
 134                     "project_viewer_trustedclient")
 135     assert_not_nil assigns(:search_sharing)
 136   end
 137
 138   test "viewing collection files with a reader token" do
 139     params = collection_params(:foo_file)
 140     params[:reader_token] = api_fixture("api_client_authorizations",
 141                                         "active_all_collections", "api_token")
 142     get(:show_file_links, params)
 143     assert_response :success
 144     assert_equal([['.', 'foo', 3]], assigns(:object).files)
 145     assert_no_session
 146   end
 147
 148   test "fetching collection file with reader token" do
 149     expected = stub_file_content
 150     params = collection_params(:foo_file, "foo")
 151     params[:reader_token] = api_fixture("api_client_authorizations",
 152                                         "active_all_collections", "api_token")
 153     get(:show_file, params)
 154     assert_response :success
 155     assert_equal(expected, @response.body,
 156                  "failed to fetch a Collection file with a reader token")
 157     assert_no_session
 158   end
 159
 160   test "reader token Collection links end with trailing slash" do
 161     # Testing the fix for #2937.
 162     session = session_for(:active_trustedclient)
 163     post(:share, collection_params(:foo_file), session)
 164     assert(@controller.download_link.ends_with? '/',
 165            "Collection share link does not end with slash for wget")
 166   end
 167
 168   test "getting a file from Keep" do
 169     params = collection_params(:foo_file, 'foo')
 170     sess = session_for(:active)
 171     expect_content = stub_file_content
 172     get(:show_file, params, sess)
 173     assert_response :success
 174     assert_equal(expect_content, @response.body,
 175                  "failed to get a correct file from Keep")
 176   end
 177
 178   test 'anonymous download' do
 179     config_anonymous true
 180     expect_content = stub_file_content
 181     get :show_file, {
 182       uuid: api_fixture('collections')['user_agreement_in_anonymously_accessible_project']['uuid'],
 183       file: 'GNU_General_Public_License,_version_3.pdf',
 184     }
 185     assert_response :success
 186     assert_equal expect_content, response.body
 187   end
 188
 189   test "can't get a file from Keep without permission" do
 190     params = collection_params(:foo_file, 'foo')
 191     sess = session_for(:spectator)
 192     get(:show_file, params, sess)
 193     assert_response 404
 194   end
 195
 196   test "trying to get a nonexistent file from Keep returns a 404" do
 197     params = collection_params(:foo_file, 'gone')
 198     sess = session_for(:admin)
 199     get(:show_file, params, sess)
 200     assert_response 404
 201   end
 202
 203   test "getting a file from Keep with a good reader token" do
 204     params = collection_params(:foo_file, 'foo')
 205     read_token = api_fixture('api_client_authorizations')['active']['api_token']
 206     params[:reader_token] = read_token
 207     expect_content = stub_file_content
 208     get(:show_file, params)
 209     assert_response :success
 210     assert_equal(expect_content, @response.body,
 211                  "failed to get a correct file from Keep using a reader token")
 212     assert_not_equal(read_token, session[:arvados_api_token],
 213                      "using a reader token set the session's API token")
 214   end
 215
 216   [false, true].each do |anon|
 217     test "download a file using a reader token with insufficient scope, anon #{anon}" do
 218       config_anonymous anon
 219       params = collection_params(:foo_file, 'foo')
 220       params[:reader_token] =
 221         api_fixture('api_client_authorizations')['active_noscope']['api_token']
 222       get(:show_file, params)
 223       if anon
 224         # Some files can be shown without a valid token, but not this one.
 225         assert_response 404
 226       else
 227         # No files will ever be shown without a valid token. You
 228         # should log in and try again.
 229         assert_response :redirect
 230       end
 231     end
 232   end
 233
 234   test "can get a file with an unpermissioned auth but in-scope reader token" do
 235     params = collection_params(:foo_file, 'foo')
 236     sess = session_for(:expired)
 237     read_token = api_fixture('api_client_authorizations')['active']['api_token']
 238     params[:reader_token] = read_token
 239     expect_content = stub_file_content
 240     get(:show_file, params, sess)
 241     assert_response :success
 242     assert_equal(expect_content, @response.body,
 243                  "failed to get a correct file from Keep using a reader token")
 244     assert_not_equal(read_token, session[:arvados_api_token],
 245                      "using a reader token set the session's API token")
 246   end
 247
 248   test "inactive user can retrieve user agreement" do
 249     ua_collection = api_fixture('collections')['user_agreement']
 250     # Here we don't test whether the agreement can be retrieved from
 251     # Keep. We only test that show_file decides to send file content,
 252     # so we use the file content stub.
 253     stub_file_content
 254     get :show_file, {
 255       uuid: ua_collection['uuid'],
 256       file: ua_collection['manifest_text'].match(/ \d+:\d+:(\S+)/)[1]
 257     }, session_for(:inactive)
 258     assert_nil(assigns(:unsigned_user_agreements),
 259                "Did not skip check_user_agreements filter " +
 260                "when showing the user agreement.")
 261     assert_response :success
 262   end
 263
 264   test "requesting nonexistent Collection returns 404" do
 265     show_collection({uuid: NONEXISTENT_COLLECTION, id: NONEXISTENT_COLLECTION},
 266                     :active, 404)
 267   end
 268
 269   test "use a reasonable read buffer even if client requests a huge range" do
 270     fakefiledata = mock
 271     IO.expects(:popen).returns(fakefiledata)
 272     fakefiledata.expects(:read).twice.with() do |length|
 273       # Fail the test if read() is called with length>1MiB:
 274       length < 2**20
 275       ## Force the ActionController::Live thread to lose the race to
 276       ## verify that @response.body.length actually waits for the
 277       ## response (see below):
 278       # sleep 3
 279     end.returns("foo\n", nil)
 280     fakefiledata.expects(:close)
 281     foo_file = api_fixture('collections')['foo_file']
 282     @request.headers['Range'] = 'bytes=0-4294967296/*'
 283     get :show_file, {
 284       uuid: foo_file['uuid'],
 285       file: foo_file['manifest_text'].match(/ \d+:\d+:(\S+)/)[1]
 286     }, session_for(:active)
 287     # Wait for the whole response to arrive before deciding whether
 288     # mocks' expectations were met. Otherwise, Mocha will fail the
 289     # test depending on how slowly the ActionController::Live thread
 290     # runs.
 291     @response.body.length
 292   end
 293
 294   test "show file in a subdirectory of a collection" do
 295     params = collection_params(:collection_with_files_in_subdir, 'subdir2/subdir3/subdir4/file1_in_subdir4.txt')
 296     expect_content = stub_file_content
 297     get(:show_file, params, session_for(:user1_with_load))
 298     assert_response :success
 299     assert_equal(expect_content, @response.body, "failed to get a correct file from Keep")
 300   end
 301
 302   test 'provenance graph' do
 303     use_token 'admin'
 304
 305     obj = find_fixture Collection, "graph_test_collection3"
 306
 307     provenance = obj.provenance.stringify_keys
 308
 309     [obj[:portable_data_hash]].each do |k|
 310       assert_not_nil provenance[k], "Expected key #{k} in provenance set"
 311     end
 312
 313     prov_svg = ProvenanceHelper::create_provenance_graph(provenance, "provenance_svg",
 314                                                          {:request => RequestDuck,
 315                                                            :direction => :bottom_up,
 316                                                            :combine_jobs => :script_only})
 317
 318     stage1 = find_fixture Job, "graph_stage1"
 319     stage3 = find_fixture Job, "graph_stage3"
 320     previous_job_run = find_fixture Job, "previous_job_run"
 321
 322     obj_id = obj.portable_data_hash.gsub('+', '\\\+')
 323     stage1_out = stage1.output.gsub('+', '\\\+')
 324     stage1_id = "#{stage1.script}_#{Digest::MD5.hexdigest(stage1[:script_parameters].to_json)}"
 325     stage3_id = "#{stage3.script}_#{Digest::MD5.hexdigest(stage3[:script_parameters].to_json)}"
 326
 327     assert /#{obj_id}&#45;&gt;#{stage3_id}/.match(prov_svg)
 328
 329     assert /#{stage3_id}&#45;&gt;#{stage1_out}/.match(prov_svg)
 330
 331     assert /#{stage1_out}&#45;&gt;#{stage1_id}/.match(prov_svg)
 332
 333   end
 334
 335   test 'used_by graph' do
 336     use_token 'admin'
 337     obj = find_fixture Collection, "graph_test_collection1"
 338
 339     used_by = obj.used_by.stringify_keys
 340
 341     used_by_svg = ProvenanceHelper::create_provenance_graph(used_by, "used_by_svg",
 342                                                             {:request => RequestDuck,
 343                                                               :direction => :top_down,
 344                                                               :combine_jobs => :script_only,
 345                                                               :pdata_only => true})
 346
 347     stage2 = find_fixture Job, "graph_stage2"
 348     stage3 = find_fixture Job, "graph_stage3"
 349
 350     stage2_id = "#{stage2.script}_#{Digest::MD5.hexdigest(stage2[:script_parameters].to_json)}"
 351     stage3_id = "#{stage3.script}_#{Digest::MD5.hexdigest(stage3[:script_parameters].to_json)}"
 352
 353     obj_id = obj.portable_data_hash.gsub('+', '\\\+')
 354     stage3_out = stage3.output.gsub('+', '\\\+')
 355
 356     assert /#{obj_id}&#45;&gt;#{stage2_id}/.match(used_by_svg)
 357
 358     assert /#{obj_id}&#45;&gt;#{stage3_id}/.match(used_by_svg)
 359
 360     assert /#{stage3_id}&#45;&gt;#{stage3_out}/.match(used_by_svg)
 361
 362     assert /#{stage3_id}&#45;&gt;#{stage3_out}/.match(used_by_svg)
 363
 364   end
 365
 366   test "view collection with empty properties" do
 367     fixture_name = :collection_with_empty_properties
 368     show_collection(fixture_name, :active)
 369     assert_equal(api_fixture('collections')[fixture_name.to_s]['name'], assigns(:object).name)
 370     assert_not_nil(assigns(:object).properties)
 371     assert_empty(assigns(:object).properties)
 372   end
 373
 374   test "view collection with one property" do
 375     fixture_name = :collection_with_one_property
 376     show_collection(fixture_name, :active)
 377     fixture = api_fixture('collections')[fixture_name.to_s]
 378     assert_equal(fixture['name'], assigns(:object).name)
 379     assert_equal(fixture['properties'][0], assigns(:object).properties[0])
 380   end
 381
 382   test "create collection with properties" do
 383     post :create, {
 384       collection: {
 385         name: 'collection created with properties',
 386         manifest_text: '',
 387         properties: {
 388           property_1: 'value_1'
 389         },
 390       },
 391       format: :json
 392     }, session_for(:active)
 393     assert_response :success
 394     assert_not_nil assigns(:object).uuid
 395     assert_equal 'collection created with properties', assigns(:object).name
 396     assert_equal 'value_1', assigns(:object).properties[:property_1]
 397   end
 398
 399   test "update description and check manifest_text is not lost" do
 400     collection = api_fixture("collections")["multilevel_collection_1"]
 401     post :update, {
 402       id: collection["uuid"],
 403       collection: {
 404         description: 'test description update'
 405       },
 406       format: :json
 407     }, session_for(:active)
 408     assert_response :success
 409     assert_not_nil assigns(:object)
 410     # Ensure the Workbench response still has the original manifest_text
 411     assert_equal 'test description update', assigns(:object).description
 412     assert_equal true, strip_signatures_and_compare(collection['manifest_text'], assigns(:object).manifest_text)
 413     # Ensure the API server still has the original manifest_text after
 414     # we called arvados.v1.collections.update
 415     use_token :active do
 416       assert_equal true, strip_signatures_and_compare(Collection.find(collection['uuid']).manifest_text,
 417                                                       collection['manifest_text'])
 418     end
 419   end
 420
 421   # Since we got the initial collection from fixture, there are no signatures in manifest_text.
 422   # However, after update or find, the collection retrieved will have singed manifest_text.
 423   # Hence, let's compare each line after excluding signatures.
 424   def strip_signatures_and_compare m1, m2
 425     m1_lines = m1.split "\n"
 426     m2_lines = m2.split "\n"
 427
 428     return false if m1_lines.size != m2_lines.size
 429
 430     m1_lines.each_with_index do |line, i|
 431       m1_words = []
 432       line.split.each do |word|
 433         m1_words << word.split('+A')[0]
 434       end
 435       m2_words = []
 436       m2_lines[i].split.each do |word|
 437         m2_words << word.split('+A')[0]
 438       end
 439       return false if !m1_words.join(' ').eql?(m2_words.join(' '))
 440     end
 441
 442     return true
 443   end
 444
 445   test "view collection and verify none of the file types listed are disabled" do
 446     show_collection(:collection_with_several_supported_file_types, :active)
 447
 448     files = assigns(:object).files
 449     assert_equal true, files.length>0, "Expected one or more files in collection"
 450
 451     disabled = css_select('[disabled="disabled"]').collect do |el|
 452       el
 453     end
 454     assert_equal 0, disabled.length, "Expected no disabled files in collection viewables list"
 455   end
 456
 457   test "view collection and verify file types listed are all disabled" do
 458     show_collection(:collection_with_several_unsupported_file_types, :active)
 459
 460     files = assigns(:object).files.collect do |_, file, _|
 461       file
 462     end
 463     assert_equal true, files.length>0, "Expected one or more files in collection"
 464
 465     disabled = css_select('[disabled="disabled"]').collect do |el|
 466       el.attributes['title'].split[-1]
 467     end
 468
 469     assert_equal files.sort, disabled.sort, "Expected to see all collection files in disabled list of files"
 470   end
 471
 472   test "anonymous user accesses collection in shared project" do
 473     config_anonymous true
 474     collection = api_fixture('collections')['public_text_file']
 475     get(:show, {id: collection['uuid']})
 476
 477     response_object = assigns(:object)
 478     assert_equal collection['name'], response_object['name']
 479     assert_equal collection['uuid'], response_object['uuid']
 480     assert_includes @response.body, 'Hello world'
 481     assert_includes @response.body, 'Content address'
 482     refute_nil css_select('[href="#Advanced"]')
 483   end
 484
 485   test "can view empty collection" do
 486     get :show, {id: 'd41d8cd98f00b204e9800998ecf8427e+0'}, session_for(:active)
 487     assert_includes @response.body, 'The following collections have this content'
 488   end
 489
 490   test "collection portable data hash redirect" do
 491     di = api_fixture('collections')['docker_image']
 492     get :show, {id: di['portable_data_hash']}, session_for(:active)
 493     assert_match /\/collections\/#{di['uuid']}/, @response.redirect_url
 494   end
 495
 496   test "collection portable data hash with multiple matches" do
 497     pdh = api_fixture('collections')['foo_file']['portable_data_hash']
 498     get :show, {id: pdh}, session_for(:admin)
 499     matches = api_fixture('collections').select {|k,v| v["portable_data_hash"] == pdh}
 500     assert matches.size > 1
 501
 502     matches.each do |k,v|
 503       assert_match /href="\/collections\/#{v['uuid']}">.*#{v['name']}<\/a>/, @response.body
 504     end
 505
 506     assert_includes @response.body, 'The following collections have this content:'
 507     assert_not_includes @response.body, 'more results are not shown'
 508     assert_not_includes @response.body, 'Activity'
 509     assert_not_includes @response.body, 'Sharing and permissions'
 510   end
 511
 512   test "collection page renders name" do
 513     collection = api_fixture('collections')['foo_file']
 514     get :show, {id: collection['uuid']}, session_for(:active)
 515     assert_includes @response.body, collection['name']
 516     assert_match /href="#{collection['uuid']}\/foo" ><\/i> foo</, @response.body
 517   end
 518
 519   test "No Upload tab on non-writable collection" do
 520     get :show, {id: api_fixture('collections')['user_agreement']['uuid']}, session_for(:active)
 521     assert_not_includes @response.body, '<a href="#Upload"'
 522   end
 523
 524   def setup_for_keep_web cfg='https://%{uuid_or_pdh}.example', dl_cfg=false
 525     Rails.configuration.keep_web_url = cfg
 526     Rails.configuration.keep_web_download_url = dl_cfg
 527     @controller.expects(:file_enumerator).never
 528   end
 529
 530   %w(uuid portable_data_hash).each do |id_type|
 531     test "Redirect to keep_web_url via #{id_type}" do
 532       setup_for_keep_web
 533       tok = api_fixture('api_client_authorizations')['active']['api_token']
 534       id = api_fixture('collections')['w_a_z_file'][id_type]
 535       get :show_file, {uuid: id, file: "w a z"}, session_for(:active)
 536       assert_response :redirect
 537       assert_equal "https://#{id.sub '+', '-'}.example/_/w+a+z?api_token=#{tok}", @response.redirect_url
 538     end
 539
 540     test "Redirect to keep_web_url via #{id_type} with reader token" do
 541       setup_for_keep_web
 542       tok = api_fixture('api_client_authorizations')['active']['api_token']
 543       id = api_fixture('collections')['w_a_z_file'][id_type]
 544       get :show_file, {uuid: id, file: "w a z", reader_token: tok}, session_for(:expired)
 545       assert_response :redirect
 546       assert_equal "https://#{id.sub '+', '-'}.example/t=#{tok}/_/w+a+z", @response.redirect_url
 547     end
 548
 549     test "Redirect to keep_web_url via #{id_type} with no token" do
 550       setup_for_keep_web
 551       config_anonymous true
 552       id = api_fixture('collections')['public_text_file'][id_type]
 553       get :show_file, {uuid: id, file: "Hello World.txt"}
 554       assert_response :redirect
 555       assert_equal "https://#{id.sub '+', '-'}.example/_/Hello+World.txt", @response.redirect_url
 556     end
 557
 558     test "Redirect to keep_web_url via #{id_type} with disposition param" do
 559       setup_for_keep_web
 560       config_anonymous true
 561       id = api_fixture('collections')['public_text_file'][id_type]
 562       get :show_file, {
 563         uuid: id,
 564         file: "Hello World.txt",
 565         disposition: 'attachment',
 566       }
 567       assert_response :redirect
 568       assert_equal "https://#{id.sub '+', '-'}.example/_/Hello+World.txt?disposition=attachment", @response.redirect_url
 569     end
 570
 571     test "Redirect to keep_web_download_url via #{id_type}" do
 572       setup_for_keep_web('https://collections.example/c=%{uuid_or_pdh}',
 573                          'https://download.example/c=%{uuid_or_pdh}')
 574       tok = api_fixture('api_client_authorizations')['active']['api_token']
 575       id = api_fixture('collections')['w_a_z_file'][id_type]
 576       get :show_file, {uuid: id, file: "w a z"}, session_for(:active)
 577       assert_response :redirect
 578       assert_equal "https://download.example/c=#{id.sub '+', '-'}/_/w+a+z?api_token=#{tok}", @response.redirect_url
 579     end
 580   end
 581
 582   [false, true].each do |anon|
 583     test "No redirect to keep_web_url if collection not found, anon #{anon}" do
 584       setup_for_keep_web
 585       config_anonymous anon
 586       id = api_fixture('collections')['w_a_z_file']['uuid']
 587       get :show_file, {uuid: id, file: "w a z"}, session_for(:spectator)
 588       assert_response 404
 589     end
 590
 591     test "Redirect download to keep_web_download_url, anon #{anon}" do
 592       config_anonymous anon
 593       setup_for_keep_web('https://collections.example/c=%{uuid_or_pdh}',
 594                          'https://download.example/c=%{uuid_or_pdh}')
 595       tok = api_fixture('api_client_authorizations')['active']['api_token']
 596       id = api_fixture('collections')['public_text_file']['uuid']
 597       get :show_file, {
 598         uuid: id,
 599         file: 'Hello world.txt',
 600         disposition: 'attachment',
 601       }, session_for(:active)
 602       assert_response :redirect
 603       expect_url = "https://download.example/c=#{id.sub '+', '-'}/_/Hello+world.txt"
 604       if not anon
 605         expect_url += "?api_token=#{tok}"
 606       end
 607       assert_equal expect_url, @response.redirect_url
 608     end
 609   end
 610
 611   test "Error if file is impossible to retrieve from keep_web_url" do
 612     # Cannot pass a session token using a single-origin keep-web URL,
 613     # cannot read this collection without a session token.
 614     setup_for_keep_web 'https://collections.example/c=%{uuid_or_pdh}', false
 615     id = api_fixture('collections')['w_a_z_file']['uuid']
 616     get :show_file, {uuid: id, file: "w a z"}, session_for(:active)
 617     assert_response 422
 618   end
 619
 620   test "Redirect preview to keep_web_download_url when preview is disabled" do
 621     setup_for_keep_web false, 'https://download.example/c=%{uuid_or_pdh}'
 622     tok = api_fixture('api_client_authorizations')['active']['api_token']
 623     id = api_fixture('collections')['w_a_z_file']['uuid']
 624     get :show_file, {uuid: id, file: "w a z"}, session_for(:active)
 625     assert_response :redirect
 626     assert_equal "https://download.example/c=#{id.sub '+', '-'}/_/w+a+z?api_token=#{tok}", @response.redirect_url
 627   end
 628 end