public void CheckSolutionAndMilestones()
{
const string userId1 = "1";
const string userId2 = "2";
const int assignmentId1 = 1;
const int assignmentId2 = 2;
List <Solution> solutions1 = assignmentServiceTest.GetSolutionsById(userId1, assignmentId1);
List <Solution> solutions2 = assignmentServiceTest.GetSolutionsById(userId2, assignmentId2);
Milestone milestone1 = assignmentServiceTest.GetMilestoneBySolution(solutions1[0]);
Milestone milestone2 = assignmentServiceTest.GetMilestoneBySolution(solutions2[0]);
Assert.AreEqual(milestone1.ID, solutions1[0].MilestoneID);
Assert.AreEqual(milestone2.ID, solutions2[0].MilestoneID);
Assert.AreEqual(userId1, solutions1[0].StudentID);
Assert.AreEqual(userId2, solutions2[0].StudentID);
}