Complete Sprint-3 stretch-extend exercise (format-time.js)

Author: lwandogwele52-ui

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

@@ -4,12 +4,21 @@
 
 function formatAs12HourClock(time) {
   const hours = Number(time.slice(0, 2));
+  const minutes = time.slice(3);
+
+  if (hours === 0) {
+    return `12:${minutes} am`;
+  }
+  if (hours === 12) {
+    return `12:${minutes} pm`;
+  }
   if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+    return `${hours - 12}:${minutes} pm`;
   }
   return `${time} am`;
 }
 
+// Original tests
 const currentOutput = formatAs12HourClock("08:00");
 const targetOutput = "08:00 am";
 console.assert(
@@ -23,3 +32,43 @@ console.assert(
   currentOutput2 === targetOutput2,
   `current output: ${currentOutput2}, target output: ${targetOutput2}`
 );
+
+// Edge case: midnight
+const currentOutput3 = formatAs12HourClock("00:00");
+const targetOutput3 = "12:00 am";
+console.assert(
+  currentOutput3 === targetOutput3,
+  `current output: ${currentOutput3}, target output: ${targetOutput3}`
+);
+
+// Edge case: noon
+const currentOutput4 = formatAs12HourClock("12:00");
+const targetOutput4 = "12:00 pm";
+console.assert(
+  currentOutput4 === targetOutput4,
+  `current output: ${currentOutput4}, target output: ${targetOutput4}`
+);
+
+// Edge case: PM time with non-zero minutes (checks minutes aren't lost)
+const currentOutput5 = formatAs12HourClock("13:45");
+const targetOutput5 = "1:45 pm";
+console.assert(
+  currentOutput5 === targetOutput5,
+  `current output: ${currentOutput5}, target output: ${targetOutput5}`
+);
+
+// Edge case: one minute before midnight
+const currentOutput6 = formatAs12HourClock("23:59");
+const targetOutput6 = "11:59 pm";
+console.assert(
+  currentOutput6 === targetOutput6,
+  `current output: ${currentOutput6}, target output: ${targetOutput6}`
+);
+
+// Edge case: noon with non-zero minutes
+const currentOutput7 = formatAs12HourClock("12:15");
+const targetOutput7 = "12:15 pm";
+console.assert(
+  currentOutput7 === targetOutput7,
+  `current output: ${currentOutput7}, target output: ${targetOutput7}`
+);