Tested all edge cases and fixed function

Author: edwardkganyago45-source

format-clock-edge-cases/timeConverter.js

@@ -1,11 +1,21 @@
 function formatAs12HourClock(time) {
+  const [hoursStr, minutesStr] = time.split(":");
+  const hours = Number(hoursStr);
+  const minutes = minutesStr ?? "00";
 
-  const hours = Number(time.slice(0, 2));
+  if (hours === 0) {
+    return `12:${minutes} am`;
+  }
+
+  if (hours < 12) {
+    return `${String(hours).padStart(2, "0")}:${minutes} am`;
+  }
 
-  if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+  if (hours === 12) {
+    return `12:${minutes} pm`;
   }
-  return `${time} am`;
+
+  return `${String(hours - 12).padStart(2, "0")}:${minutes} pm`;
 }
 
 export {formatAs12HourClock};

format-clock-edge-cases/timeConverter.test.js

@@ -2,17 +2,25 @@ import {formatAs12HourClock} from "./timeConverter.js";
 import assert from "node:assert";
 import test from "node:test";
 
-test("correctly convert time after 12:00", function(){
-    assert.equal(formatAs12HourClock("23:00"), "11:00 pm");
+test("converts midnight correctly", function() {
+    assert.equal(formatAs12HourClock("00:00"), "12:00 am");
 });
 
-test("can correctly convert morning time", function() {
+test("converts early morning times correctly", function() {
+    assert.equal(formatAs12HourClock("01:00"), "01:00 am");
     assert.equal(formatAs12HourClock("08:00"), "08:00 am");
+    assert.equal(formatAs12HourClock("11:59"), "11:59 am");
 });
 
-test("can correctly convert 00:00", function() {
-    assert.equal(formatAs12HourClock("00:00"), "12:00 am");
+test("converts noon correctly", function() {
+    assert.equal(formatAs12HourClock("12:00"), "12:00 pm");
+    assert.equal(formatAs12HourClock("12:30"), "12:30 pm");
 });
 
+test("converts afternoon and evening times correctly", function() {
+    assert.equal(formatAs12HourClock("13:00"), "01:00 pm");
+    assert.equal(formatAs12HourClock("18:45"), "06:45 pm");
+    assert.equal(formatAs12HourClock("23:00"), "11:00 pm");
+});