creating linked data with fakexrmeasy

Question

How do you create an entity and link another entity to it in FakeXrmEasy?

I am attempting to test this code:

    public List<abc_OrderTask> GetTasks(Guid workOrderGuid)
    {
        var result = (from task in _xrmServiceContext.abc_OrderTaskSet
                      join workOrder in _xrmServiceContext.abc_workorderSet 
                                                on task.RegardingObjectId.Id equals workOrder.Id
                      where workOrder.Id == workOrderGuid
                      select task).ToList();

        return result;
    }

Relationship between abc_OrderTask and abc_WorkOrder is N:1

In my test, I am attempting to link the two entities:

    [Test]
    public void GetTasks_WorkOrderWithExistingTasks_ReturnsListOfTasks()
    {
        using (var xrmServiceContext = new XrmServiceContext(_fakeOrganizationService))
        {
            var workOrderGuid = Guid.NewGuid();
            var taskGuid = Guid.NewGuid();
            var workOrder = new abc_workorder { Id = workOrderGuid };
            var task = new abc_OrderTask
                           {
                               Id = taskGuid,
                               Subject = "Required subject",
                               RegardingObjectId =
                                   new EntityReference(abc_workorder.EntityLogicalName, workOrderGuid)
                           };
            _fakeContext.Initialize(new List<Entity> { workOrder, task });

            var sut = new WorkOrderService(xrmServiceContext);

            // Act
            // Assert
            Assert.That(sut.GetTasks(workOrderGuid), Is.InstanceOf<List<abc_OrderTask>>());
            Assert.That(sut.GetTasks(workOrderGuid).Count.Equals(1));
        }
    }

However, the result set is empty.

How do you create an entity and link another entity to it in FakeXrmEasy?

Here's how this object is getting new-ed up:

    private IOrganizationService _fakeOrganizationService;

    [SetUp]
    public void Init()
    {
        _fakeContext = new XrmFakedContext { ProxyTypesAssembly = Assembly.GetAssembly(typeof(abc_workorder)) };
        _fakeOrganizationService = _fakeContext.GetFakedOrganizationService();
    }

Answer 1

abc_OrderTask is a custom activity. Activities are child records of their regarding object (abc_workorder), defined by abc_OrderTask.RegardObjectId. It appears this is setup correctly in your test data.

The method being tested, GetTasks, is querying based on a custom N:1 relationship from abc_workorder to abc_OrderTask with Lookup field named abc_workorder_abc_OrderTasks.

You need to fix GetTasks to filter abc_OrderTask by RegardingObjectId.Id.