public async Task AddUsersToApp()
{
// Arrange
// Act
var result = await sut.AddAppUser(1, 3);
var appUsers = context.Users.Where(u => u.Apps.Any(ua => ua.AppId == 1)).ToList();
// Assert
Assert.That(result.Success, Is.True);
Assert.That(result.Message, Is.EqualTo("User Added to App"));
}
