public void AddMemberToTeam()
{
// Arrange
var teams = new List <Team>()
{
new Team(), new Team(), new Team()
};
_context.Teams.AddRange(teams);
_context.SaveChanges();
var players = new List <Player>()
{
new Player(), new Player(), new Player()
};
// Act
_target.AddMemberToTeam(teams[1], players);
// Assert
Check.That(teams[1].Players).ContainsExactly(players);
Check.That(_context.Players).ContainsExactly(players);
}