public void Build_SetStartingPlayer() { var player1 = new MockPlayer(); var player2 = new MockPlayer(); var expectedPlayers = new MockPlayers().CurrentReturns(player1); var startingPlayerMapper = new MockStartingPlayerMapper().AddReturnsItself().KeyReturns(player1); var players = new MockPlayers().AddReturnsItself().SetCurrentPlayerReturns(expectedPlayers); var firstPlayerType = new MockPlayerType().PlayerReturns(player1); var secondPlayerType = new MockPlayerType().PlayerReturns(player2); var startingPlayer = new MockStartingPlayer(); var builder = BuildGameBuilder(startingPlayerMapper, players, firstPlayerType: firstPlayerType, secondPlayerType: secondPlayerType, startingPlayer: startingPlayer); builder.Build(); players.VerifySetCurrentPlayerCalled(player1); startingPlayerMapper.VerifyKeyCalled(startingPlayer); }