Ensure that your time is correct

clock-with-unit-test.js

// Function to display a clock
function displayClock() {
  setInterval(() => {
    const now = new Date();
    const hours = now.getHours().toString().padStart(2, '0');
    const minutes = now.getMinutes().toString().padStart(2, '0');
    const seconds = now.getSeconds().toString().padStart(2, '0');
    console.log(`${hours}:${minutes}:${seconds}`);
  }, 1000);
}

// Unit test to check if displayed time is accurate
async function testDisplayClock() {
  const response = await fetch('http://worldtimeapi.org/api/timezone/America/New_York');
  const data = await response.json();
  const time = data.datetime.slice(11, 19);
  return new Promise((resolve, reject) => {
    const timeoutId = setTimeout(() => {
      clearTimeout(timeoutId);
      reject(new Error('Test timed out.'));
    }, 5000);
    const intervalId = setInterval(() => {
      const now = new Date();
      const hours = now.getHours().toString().padStart(2, '0');
      const minutes = now.getMinutes().toString().padStart(2, '0');
      const seconds = now.getSeconds().toString().padStart(2, '0');
      const displayedTime = `${hours}:${minutes}:${seconds}`;
      if (displayedTime === time) {
        clearInterval(intervalId);
        clearTimeout(timeoutId);
        resolve();
      }
    }, 1000);
  });
}

// Call the displayClock function and run the test
displayClock();
testDisplayClock().then(() => {
  console.log('Test passed.');
}).catch((error) => {
  console.error('Test failed:', error.message);
});