Fix tests for list_folder/longpoll

Author: Jesus

spec/endpoints/files/list_folder_longpoll_spec.rb

@@ -1,24 +1,31 @@
+require 'byebug'
+
 # frozen_string_literal: true
 describe DropboxApi::Client, '#list_folder_longpoll' do
+  let(:path_prefix) { DropboxScaffoldBuilder.prefix_for :list_folder_longpoll }
   before :each do
     @client = DropboxApi::Client.new
   end
 
   before :each do
     VCR.use_cassette('list_folder_longpoll/list_folder') do
-      @cursor = @client.list_folder('').cursor
+      @cursor = @client.list_folder(path_prefix).cursor
     end
   end
 
   it 'returns a ListFolderLongpollResult', cassette: 'list_folder_longpoll/success' do
-    result = @client.list_folder_longpoll @cursor
+    result = nil
+    [
+      Thread.new {
+        result = @client.list_folder_longpoll @cursor
+      },
+      Thread.new {
+        sleep 1 # make sure the other request had time to start
+        @client.upload("#{path_prefix}/duck.txt", 'Quack!')
+      }
+    ].each(&:join)
 
     expect(result).to be_a(DropboxApi::Results::ListFolderLongpollResult)
-  end
-
-  it "indicates if there're changes", cassette: 'list_folder_longpoll/success' do
-    result = @client.list_folder_longpoll @cursor
-
     expect(result.changes).to be_truthy
   end