assertions in node test feel very "technically correct but kind of ugly" compared to jest, but I'll use it anyway
expect(bar).toEqual(
expect.objectContaining({
symbol: `BTC`,
interval: `hour`,
timestamp: expect.any(Number),
o: expect.any(Number),
h: expect.any(Number),
l: expect.any(Number),
c: expect.any(Number),
v: expect.any(Number)
})
);