[b] Fix looping bug when load paginated results

Author: Thai Xuan + Duc Pham

lib/microsoft_graph/collection_association.rb

@@ -159,7 +159,7 @@ def <<(new_member)
 
     def each(start = 0)
       return to_enum(:each, start) unless block_given?
-      @next_link = query_path
+      @next_link ||= query_path
       Array(@internal_values[start..-1]).each do |element|
         yield(element)
       end
@@ -207,6 +207,8 @@ def fetch_next_page
         end
       end
       @next_link = result[:attributes]['@odata.next_link']
+      @next_link.sub!(MicrosoftGraph::BASE_URL, "") if @next_link
+
       result[:attributes]['value'].each do |entity_hash|
         klass =
           if member_type = specified_member_type(entity_hash)
@@ -216,7 +218,7 @@ def fetch_next_page
           end
         @internal_values.push klass.new(attributes: entity_hash, parent: self, persisted: true)
       end
-      @loaded = result[:attributes]['@odata.next_link'].nil?
+      @loaded = @next_link.nil?
     end
 
     def default_member_class

spec/microsoft_graph/collection_association_spec.rb

@@ -183,7 +183,8 @@
         ]
       }
       stub_request(:get, "https://graph.microsoft.com/v1.0/users/USER123/calendars")
-        .to_return({ body: first_page_body.to_json }).times(1).then
+        .to_return({ body: first_page_body.to_json }).times(1)
+      stub_request(:get, "https://graph.microsoft.com/v1.0/users/USER123/calendars?$skip=1")
         .to_return({ body: second_page_body.to_json }).times(1)
     end
     Given(:me) { graph.me }