public void ShouldAddConfigurationVariables([Frozen]Mock<IAppHarborClient> client,
[Frozen]Mock<TextWriter> writer,
UserCommand command, User user, string applicationId)
{
client.Setup(x => x.GetUser()).Returns(user);
command.Execute(new string[0]);
writer.Verify(x => x.WriteLine("Username: {0}", user.Username));
writer.Verify(x => x.WriteLine("Email addresses: [{0}]", string.Join(" ", user.Email_Addresses)));
}