rainWater.test.js

// import {describe, it} from 'node:test';
import assert from 'node:assert/strict';
import {jest} from '@jest/globals';
import util from 'node:util';
import {style} from './styles.js';
util.inspect.defaultOptions.depth = null; // show full objects
// util.inspect.defaultOptions.depth = 0; // show truncated objects
// util.inspect.defaultOptions.compact = true; // dont break objects to new lines
// util.inspect.defaultOptions.compact = false; // break objects to new lines

// suppress jests tracing console logs
import console from 'console';
const jestConsole = console;

beforeEach(() => {
  global.console = console;
  console.log(style.color(255,0,255),'▷',style.reset,style.color(39),expect.getState().currentTestName,style.reset,'\n'); });

afterEach(() => {
  global.console = jestConsole;
  console.log(style.color(99), style.hr.double, style.reset);
});

import rainWater from './rainWater.js';

describe('rainWater', () => {
  it('should calculate trapped rainwater', () => {
    const input = [4, 2, 1, 3, 0, 1, 2];
    const rain = rainWater(input);
    expect(rain)
      .toStrictEqual(6);
  });

});