Fix Readline.readline use

Author: dkmyta

app/controllers/core.rb

@@ -37,9 +37,9 @@ def update_db_required?
         return false unless user_interaction? && local_db.outdated?
 
         output('@notice', msg: 'It seems like you have not updated the database for some time.')
-        print '[?] Do you want to update now? [Y]es [N]o, default: [N]'
+        response = Readline.readline('[?] Do you want to update now? [Y]es [N]o, default: [N] ', true)
 
-        /^y/i.match?(Readline.readline)
+        !!/^y/i.match?(response)
       end
 
       def update_db

spec/app/controllers/core_spec.rb

@@ -106,19 +106,25 @@
 
         context 'when the db is outdated' do
           before do
+            allow(core).to receive(:user_interaction?).and_return(true)
             expect(core.local_db).to receive(:outdated?).ordered.and_return(true)
             expect(core.formatter).to receive(:output).with('@notice', hash_including(:msg), 'core').ordered
-            expect($stdout).to receive(:write).ordered # for the print()
           end
 
           context 'when a positive answer' do
-            before { expect(Readline).to receive(:readline).and_return('Yes').ordered }
+            before do
+              expect(Readline).to receive(:readline).with('[?] Do you want to update now? [Y]es [N]o, default: [N] ',
+                                                          true).and_return('Yes')
+            end
 
             its(:update_db_required?) { should eql true }
           end
 
           context 'when a negative answer' do
-            before { expect(Readline).to receive(:readline).and_return('no').ordered }
+            before do
+              expect(Readline).to receive(:readline).with('[?] Do you want to update now? [Y]es [N]o, default: [N] ',
+                                                          true).and_return('No')
+            end
 
             its(:update_db_required?) { should eql false }
           end