public void Throw_ArgumentNullException_When_TeamDontExist()
{
//Arrange
var personListMock = new Mock <IPersonsCollection>();
var wIMTeamMock = new Mock <IWIMTeams>();
wIMTeamMock.Setup(w => w.TeamsList).Returns(new Mock <IDictionary <string, ITeam> >().Object);
var teamMock = new Mock <ITeam>();
teamMock.Setup(x => x.TeamName).Returns("TeamName");
var sut = new Getters(personListMock.Object, wIMTeamMock.Object);
//Act&&Assert
var ex = Assert.ThrowsException <ArgumentException>(() => sut.GetMember(teamMock.Object, "Pesho"));
Assert.AreEqual(string.Format(CommandsConsts.NoTeamFound, teamMock.Object.TeamName), ex.Message);
}