Testing react-sortable-hoc with Jest

I'm having trouble understanding how to test react-sortable-hoc components with Jest/Enzyme, although it's fair to say I am extremely amateur at this - perhaps you will be able to help me figure this out and help other newbies in the process.

Here's my `Task.test.js` code:

```
import React from 'react'
import ReactDOM from 'react-dom'
import renderer from 'react-test-renderer'
import {shallow, mount} from 'enzyme'
import toJson from 'enzyme-to-json'
import {SortableContainer} from 'react-sortable-hoc'
import Task from './Task'

const TaskList = SortableContainer(() =>

)

it('renders without crashing', () => {
mount()
})

it('should match its empty snapshot', () => {
const tree = renderer.create(

).toJSON()
expect(tree).toMatchSnapshot()
})
```

And here is the output of the tests:

```
FAIL src/components/TaskList/Task/Task.test.js

● should match its empty snapshot

Invariant Violation: getNodeFromInstance: Invalid argument.

at invariant (node_modules/fbjs/lib/invariant.js:44:15)
at Object.getNodeFromInstance (node_modules/react-dom/lib/ReactDOMComponentTree.js:162:77)
at findDOMNode (node_modules/react-dom/lib/findDOMNode.js:49:41)
at _class.componentDidMount (node_modules/react-sortable-hoc/dist/commonjs/SortableHandle/index.js:51:46)
at node_modules/react-test-renderer/lib/ReactCompositeComponent.js:264:25
at measureLifeCyclePerf (node_modules/react-test-renderer/lib/ReactCompositeComponent.js:75:12)
at node_modules/react-test-renderer/lib/ReactCompositeComponent.js:263:11
at CallbackQueue.notifyAll (node_modules/react-test-renderer/lib/CallbackQueue.js:76:22)
at ReactTestReconcileTransaction.close (node_modules/react-test-renderer/lib/ReactTestReconcileTransaction.js:36:26)
at ReactTestReconcileTransaction.closeAll (node_modules/react-test-renderer/lib/Transaction.js:209:25)
at ReactTestReconcileTransaction.perform (node_modules/react-test-renderer/lib/Transaction.js:156:16)
at batchedMountComponentIntoNode (node_modules/react-test-renderer/lib/ReactTestMount.js:69:27)
at ReactDefaultBatchingStrategyTransaction.perform (node_modules/react-test-renderer/lib/Transaction.js:143:20)
at Object.batchedUpdates (node_modules/react-test-renderer/lib/ReactDefaultBatchingStrategy.js:62:26)
at Object.batchedUpdates (node_modules/react-test-renderer/lib/ReactUpdates.js:97:27)
at Object.render [as create] (node_modules/react-test-renderer/lib/ReactTestMount.js:128:18)
at Object..it (src/components/TaskList/Task/Task.test.js:16:44)
at Promise.resolve.then.el (node_modules/p-map/index.js:42:16)
at process._tickCallback (internal/process/next_tick.js:109:7)

✓ renders without crashing (31ms)

✕ should match its empty snapshot (9ms)

Test Suites: 1 failed, 1 total
Tests: 1 failed, 1 passed, 2 total
Snapshots: 0 total
Time: 0.791s, estimated 1s
Ran all test suites related to changed files.
```

My goal is to actually test the `Task` component (which is a `SortableElement`), but if I try to import and use it alone, I get an error saying

```
Warning: Failed context type: The context `manager` is marked as required in `SortableElement`, but its value is `undefined`
```

which is why I'm trying to place it in a `SortableContainer`.

What is the correct way to go about this?