Should i test static local files in JS?

I have static local JSON files, that contains a lot of data, like countries, states, maps data.

{
  "CN": {
    "value": "CN",
    "label": "China"
  },
  "TW": {
    "value": "TW",
    "label": "Taiwan, China"
  },
  "HK": {
    "value": "HK",
    "label": "Hong Kong"
  },
}

Should i write a unit tests to check if have object length of X, and check others properties, labels/values, or this considered as a waste of time and not needed code?

like what i did is the following:

describe('country', () => {
  describe('Check object structure', () => {
    it('Should return US for US object', () => {
      expect(englishCountries.US.value).to.eql('US');
    });

    it('Should return CN for CN object', () => {
      expect(chineseCountries.CN.value).to.eql('CN');
    });
  });
});