public void GetById_Test()
{
ParentTask pTask = new ParentTask();
pTask.ParentId = 1;
pTask.TaskName = "ABCD";
var ptasks = new List <ParentTask>();
ptasks.Add(pTask);
var t = ptasks.AsQueryable();
//var mockSet = new Mock<DbSet<Task_Table>>();
var mockSet = new Mock <DbSet <ParentTask> >();
mockSet.As <IQueryable <ParentTask> >().Setup(m => m.Provider).Returns(t.Provider);
mockSet.As <IQueryable <ParentTask> >().Setup(m => m.Expression).Returns(t.Expression);
mockSet.As <IQueryable <ParentTask> >().Setup(m => m.ElementType).Returns(t.ElementType);
mockSet.As <IQueryable <ParentTask> >().Setup(m => m.GetEnumerator()).Returns(t.GetEnumerator());
var mockTaskMangerContext = new Mock <ProjectmanagerContext>();
mockTaskMangerContext.Setup(c => c.ParentTasks).Returns(mockSet.Object);
mockTaskMangerContext.Setup(c => c.Set <ParentTask>()).Returns(mockSet.Object);
mockTaskMangerContext.Setup(c => c.Set <ParentTask>().Find(1)).Returns(pTask);
mockTaskMangerContext.Setup(p => p.SaveChanges());
var objTestTaskrepo = new ProjectManagerRepository <ParentTask>(mockTaskMangerContext.Object);
var retObj = objTestTaskrepo.GetById(1);
Assert.AreEqual(retObj.TaskName, pTask.TaskName);
mockTaskMangerContext.Verify(mock => mock.Set <ParentTask>().Find(1), Times.Once());
}