import pl from 'nodejs-polars';

const eventData = [
	{id: 1, name: 'one', attributes: {x: 700, colour: 'black'}},
	{id: 2, name: 'two', attributes: {x: 800, colour: 'blue'}},
	{id: 3, name: 'three', attributes: {x: 100, colour: 'red'}}
]
const eventDf = pl.DataFrame(eventData);

test('get nested object column', async () => {
  expect(eventDf.getColumn('name').toArray()).toEqual(eventData.map(e=>e['name']));
  expect(eventDf.getColumn('attributes').toArray()).toMatchObject(eventData.map(e=>e['attributes']));
});

Error: expect(received).toMatchObject(expected)

- Expected  - 6
+ Received  + 3

  Array [
    Object {
-     "colour": "black",
-     "x": 700,
+     "": null,
    },
    Object {
-     "colour": "blue",
-     "x": 800,
+     "": null,
    },
    Object {
-     "colour": "red",
-     "x": 100,
+     "": null,
    },
  ]