public class ModuleTests
{
  [Test]
  public void CanAddModule()
  {
    var manager = new ModuleManager();
    var module = new CourseModule("First Module", new LocalAssignment[] { });
    manager.AddModule(module);

    manager.Modules.Count().Should().Be(1);
    manager.Modules.First().Should().Be(module);
  }

  [Test]
  public void CanAddAssignmentToCorrectModule()
  {
    var manager = new ModuleManager();
    manager.AddModule(new CourseModule("First Module", new LocalAssignment[] { }));
    manager.AddModule(new CourseModule("Second Module", new LocalAssignment[] { }));
    manager.AddModule(new CourseModule("Third Module", new LocalAssignment[] { }));
    manager.AddModule(new CourseModule("Fourth Module", new LocalAssignment[] { }));

    var assignment = new LocalAssignment
    {
      name = "testname",
      description = "testDescription",
      published = false,
      lock_at_due_date = true,
      rubric = new RubricItem[] { },
      lock_at = null,
      due_at = DateTime.Now,
      points_possible = 10,
      submission_types = new SubmissionType[] { SubmissionType.online_text_entry }
    };

    manager.AddAssignment(3, assignment);
    manager.Modules.Count().Should().Be(4);
    manager.Modules.ElementAt(3).Assignments.Count().Should().Be(1);
  }
}