Completed format-time.js exercise

Author: anosidium

Sprint-2/5-stretch-extend/format-time.js

@@ -3,11 +3,18 @@
 // 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 `${hours - 12}:00 pm`;
+  let hours = Number(time.slice(0, 2));
+  const minutes = time.slice(3, 5);
+
+  if (hours === 24) {
+    hours = 0;
   }
-  return `${time} am`;
+
+  const period = hours < 12 ? "am" : "pm";
+  hours = hours % 12 || 12;
+  const paddedHours = String(hours).padStart(2, "0");
+
+  return `${paddedHours}:${minutes} ${period}`;
 }
 
 const currentOutput = formatAs12HourClock("08:00");
@@ -23,3 +30,31 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+const currentOutput3 = formatAs12HourClock("00:00");
+const targetOutput3 = "12:00 am";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+
+const currentOutput4 = formatAs12HourClock("24:00");
+const targetOutput4 = "12:00 am";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
+);
+
+const currentOutput5 = formatAs12HourClock("12:00");
+const targetOutput5 = "12:00 pm";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`
+);
+
+const currentOutput6 = formatAs12HourClock("09:41");
+const targetOutput6 = "09:41 am";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`
+);