Allow passing per_page to Jira ListService

app/services/jira/requests/issues/list_service.rb

@@ -13,15 +13,16 @@ module Jira
 
           @jql = params[:jql].to_s
           @page = params[:page].to_i || 1
+          @per_page = params[:per_page].to_i || PER_PAGE
         end
 
         private
 
-        attr_reader :jql, :page
+        attr_reader :jql, :page, :per_page
 
         override :url
         def url
-          "#{base_api_url}/search?jql=#{CGI.escape(jql)}&startAt=#{start_at}&maxResults=#{PER_PAGE}&fields=*all"
+          "#{base_api_url}/search?jql=#{CGI.escape(jql)}&startAt=#{start_at}&maxResults=#{per_page}&fields=*all"
         end
 
         override :build_service_response
@@ -48,7 +49,7 @@ module Jira
         end
 
         def start_at
-          (page - 1) * PER_PAGE
+          (page - 1) * per_page
         end
       end
     end

spec/services/jira/requests/issues/list_service_spec.rb

@@ -55,7 +55,7 @@ RSpec.describe Jira::Requests::Issues::ListService do
             expect(client).to receive(:get).and_return([])
           end
 
-          it 'returns a paylod with no issues' do
+          it 'returns a payload with no issues' do
             payload = subject.payload
 
             expect(subject.success?).to be_truthy
@@ -75,7 +75,7 @@ RSpec.describe Jira::Requests::Issues::ListService do
             )
           end
 
-          it 'returns a paylod with jira issues' do
+          it 'returns a payload with jira issues' do
             payload = subject.payload
 
             expect(subject.success?).to be_truthy
@@ -83,6 +83,16 @@ RSpec.describe Jira::Requests::Issues::ListService do
             expect(payload[:is_last]).to be_falsy
           end
         end
+
+        context 'when using pagination parameters' do
+          let(:params) { { page: 3, per_page: 20 } }
+
+          it 'honors page and per_page' do
+            expect(client).to receive(:get).with(include('startAt=40&maxResults=20')).and_return([])
+
+            subject
+          end
+        end
       end
     end
   end