Return a valid list of matches for 1 team

app/services/match_service.rb

@@ -6,11 +6,18 @@ class MatchService
   # @param teams [Array] the teams to generate matches with
   # @return [Array] the generated matches
   def self.generate_matches(teams)
-    if teams.size < 2
+    if teams.empty?
       # should be prevented by controller
       return
     end
 
+    if teams.size == 1
+      matches = []
+      match = Match.new state: :single_team, position: 1, match_scores: [MatchScore.create(team: teams.first)]
+      matches << match
+      return matches
+    end
+
     # normal_games = number of matches with two teams attending
     # needed_games = number of matches to generate in total for the given number of teams
     if Utils.po2?(teams.size)

spec/services/match_service_spec.rb

@@ -117,9 +117,5 @@ RSpec.describe MatchService do
     it 'generates no matches for 0 teams' do
       expect(MatchService.generate_matches([])). to eq(nil)
     end
-
-    it 'generates no matches for 1 team' do
-      expect(MatchService.generate_matches(build_list(:team, 1))). to eq(nil)
-    end
   end
 end