According to 1 Corinthians 14:29–33, pastor-elders test prophecies, as well as the gathered church. How this actually functions today depends on how churches are structured. I’ll give one example of how it can be done.
In a precious church I was part of for eighteen years, the pastors made space during the music portion of the corporate worship service for prophetic words to be shared. People who sensed they had a word came up to a pastor designated to evaluate public contributions, shared it with him, and the pastor discerned if it should be shared or not. If so, these people were allowed to address the congregation from a microphone in one of the aisles. It frequently was encouraging and consoling (1 Corinthians 14:3). Also, small group leaders were trained to evaluate prophetic words so that they could be shared in small groups as well. In both cases, a prophecy was evaluated by a leader and by the gathered church present.