X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/77e3dec8727c1fc00665531a39583c85b2c404bb..ef56ac56a0bac0710a486c0e5e9cdd3199eddc61:/apps/workbench/test/functional/collections_controller_test.rb

diff --git a/apps/workbench/test/functional/collections_controller_test.rb b/apps/workbench/test/functional/collections_controller_test.rb
index b334f9ff27..ff53777da4 100644
--- a/apps/workbench/test/functional/collections_controller_test.rb
+++ b/apps/workbench/test/functional/collections_controller_test.rb
@@ -181,4 +181,29 @@ class CollectionsControllerTest < ActionController::TestCase
     show_collection({uuid: NONEXISTENT_COLLECTION, id: NONEXISTENT_COLLECTION},
                     :active, 404)
   end
+
+  test "use a reasonable read buffer even if client requests a huge range" do
+    fakefiledata = mock
+    IO.expects(:popen).returns(fakefiledata)
+    fakefiledata.expects(:read).twice.with() do |length|
+      # Fail the test if read() is called with length>1MiB:
+      length < 2**20
+      ## Force the ActionController::Live thread to lose the race to
+      ## verify that @response.body.length actually waits for the
+      ## response (see below):
+      # sleep 3
+    end.returns("foo\n", nil)
+    fakefiledata.expects(:close)
+    foo_file = api_fixture('collections')['foo_file']
+    @request.headers['Range'] = 'bytes=0-4294967296/*'
+    get :show_file, {
+      uuid: foo_file['uuid'],
+      file: foo_file['manifest_text'].match(/ \d+:\d+:(\S+)/)[1]
+    }, session_for(:active)
+    # Wait for the whole response to arrive before deciding whether
+    # mocks' expectations were met. Otherwise, Mocha will fail the
+    # test depending on how slowly the ActionController::Live thread
+    # runs.
+    @response.body.length
+  end
 end