Test the behavior defined in useEffect

EffectComponent.js

import React, { useState, useEffect } from "react";

export default function EffectComponent() {

  const [dataSize, setDataSize] = useState(0);

  const loadData = () => {
    const dataFromApi = ['a', 'b', 'c'];
    setDataSize(dataFromApi.length);
  };

  useEffect(loadData, []);

  return (
    <div>
      <h1>Data size: {dataSize}</h1>
    </div>
  );
}