What is the difference between ‘it’ and ‘test’ in Jest?

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I have two tests in my test group. One of the tests use it and the other one uses test. Both of them seem to be working very similarly. What is the difference between them?

describe('updateAll', () => {
  it('no force', () => {
    return updateAll(TableName, ["fileName"], {compandId: "test"})
        .then(updatedItems => {
          let undefinedCount = 0;
          for (let item of updatedItems) {
            undefinedCount += item === undefined ? 1 : 0;
          }
          // console.log("result", result);
          expect(undefinedCount).toBe(updatedItems.length);
        })
  });

  test('force update', () => {
    return updateAll(TableName, ["fileName"], {compandId: "test"}, true)
        .then(updatedItems => {
          let undefinedCount = 0;
          for (let item of updatedItems) {
            undefinedCount += item === undefined ? 1 : 0;
          }
          // console.log("result", result);
          expect(undefinedCount).toBe(0);
        })
  });
});

It seems that test is in the official API of Jest, but it is not.

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