complete ex format-time.js

Author: fatimarouchi

Sprint-3/5-stretch-extend/format-time.js

@@ -3,23 +3,46 @@
 // Your task is to write tests for as many different groups of input data or edge cases as you can, and fix any bugs you find.
 
 function formatAs12HourClock(time) {
-  const hours = Number(time.slice(0, 2));
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  const [hoursString, minutesString = "00"] = time.split(":");
+  const hours = Number(hoursString);
+  const minutes = minutesString;
+
+  let suffix = "am";
+  if (hours >= 12) {
+    suffix = "pm";
+  }
+  let formattedHours = hours % 12;
+
+  if (formattedHours === 0) {
+    formattedHours = 12;
   }
-  return `${time} am`;
+  return `${formattedHours}:${minutes} ${suffix}`;
 }
 
 const currentOutput = formatAs12HourClock("08:00");
 const targetOutput = "08:00 am";
 console.assert(
   currentOutput === targetOutput,
-  `current output: ${currentOutput}, target output: ${targetOutput}`
+  `current output: ${currentOutput}, target output: ${targetOutput}`,
 );
 
 const currentOutput2 = formatAs12HourClock("23:00");
 const targetOutput2 = "11:00 pm";
 console.assert(
   currentOutput2 === targetOutput2,
-  `current output: ${currentOutput2}, target output: ${targetOutput2}`
+  `current output: ${currentOutput2}, target output: ${targetOutput2}`,
+);
+const noonOutput = formatAs12HourClock("12:00");
+const noonTarget = "12:00 pm";
+console.assert(
+  noonOutput === noonTarget,
+  `current output: ${noonOutput}, target output: ${noonTarget}`,
+);
+
+const midnightOutput = formatAs12HourClock("00:00");
+const midnightTarget = "12:00 am";
+console.assert(
+  midnightOutput === midnightTarget,
+  `current output: ${midnightOutput}, target output: ${midnightTarget}`,
 );
+console.log("All tests passed");