Cape Town | sep-2026-ITP | Matthaus Bause | Sprint 1 | Time Clock

format-clock-edge-cases/timeConverter.js

@@ -1,11 +1,24 @@
 function formatAs12HourClock(time) {
+
+  const [hoursStr, minutesStr] = time.split(':');
+  const hours = Number(hoursStr);
+  const minutes = minutesStr;
 
-  const hours = Number(time.slice(0, 2));
+  if (hours === 0 || hours === 24) {
+    return `12:${minutes} am`;
+  }
+
+  if (hours === 12) {
+    return `12:${minutes} pm`;
+  }
 
   if (hours > 12) {
-    return `${hours - 12}:00 pm`;
+    const formattedHours = String(hours - 12).padStart(2, '0');
+    return `${formattedHours}:${minutes} pm`;
   }
-  return `${time} am`;
+
+  const formattedHours = String(hours).padStart(2, '0');
+  return `${formattedHours}:${minutes} am`;
 }
 
-export {formatAs12HourClock};
+export {formatAs12HourClock};

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

@@ -2,10 +2,94 @@ import {formatAs12HourClock} from "./timeConverter.js";
 import assert from "node:assert";
 import test from "node:test";
 
-test("correctly convert time after 12:00", function(){
+test("correctly convert hours after 12:00", () => {
     assert.equal(formatAs12HourClock("23:00"), "11:00 pm");
 });
 
-test("can correctly convert morning time", function() {
+test("correctly convert minutes after 12:00", () => {
+    assert.equal(formatAs12HourClock("23:53"), "11:53 pm");
+});
+
+test("can correctly convert morning time", () => {
     assert.equal(formatAs12HourClock("08:00"), "08:00 am");
 });
+
+test("can correctly convert morning time minutes", () => {
+    assert.equal(formatAs12HourClock("08:30"), "08:30 am");
+});
+
+test("can correctly convert morning time minutes", () => {
+    assert.equal(formatAs12HourClock("08:34"), "08:34 am");
+});
+
+test("can successfully convert midnight time", () =>
+    assert.equal(formatAs12HourClock("24:00"), "12:00 am"));
+
+test("correctly convert midnight 00:00", () => {
+    assert.equal(formatAs12HourClock("00:00"), "12:00 am");
+});
+
+test("correctly convert noon 12:00", () => {
+    assert.equal(formatAs12HourClock("12:00"), "12:00 pm");
+});
+
+test("correctly convert boundary time around noon", () => {
+    assert.equal(formatAs12HourClock("11:59"), "11:59 am");
+    assert.equal(formatAs12HourClock("12:01"), "12:01 pm");
+});
+
+test("correctly convert early afternoon hours", () => {
+    assert.equal(formatAs12HourClock("13:00"), "01:00 pm");
+});
+
+test("correctly convert single-digit morning hours if supported", () => {
+    assert(formatAs12HourClock("08:30"), "08:30am");
+});
+
+/*
+Edge cases:
+Correctly convert hours after 12:00
+Input | Expected
+23:00   11:00 pm
+
+Correctly convert afternoon hours and minutes
+Input | Expected
+23:00   11:53 pm
+
+Correctly convert morning time and minutes
+Input | Expected
+08:00   08:00 am
+
+Correctly convert morning time and minutes
+Input | Expected
+08:30   08:30 am
+
+Correctly convert morning time and minutes
+Input | Expected
+08:34   08:34 am
+
+Correctly convert midnight time
+Input | Expected
+24:00   12:00 am
+
+Correctly convert midnight
+Input | Expected
+00:00   12:00 am
+
+Correctly convert noon
+Input | Expected
+12:00   12:00 pm
+
+Correctly convert boundary time around noon
+Input | Expected
+11:59   11:59 am
+12:01   12:01 pm
+
+Correctly convert early afternoon hours 
+Input | Expected
+13:00   1:00 pm
+
+Correctly convert single-digit morning hours if supported
+Input | Expected
+08:30   8:30 am
+*/

implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js

@@ -10,3 +10,41 @@ test("Classifies right angles", () => {
   const right = getAngleType(90);
   assert.equal(right, "Right angle");
 });
+
+test("classifies acute angles", () => {
+  assert.equal(getAngleType(1), "Acute angle");
+  assert.equal(getAngleType(45), "Acute angle");
+  assert.equal(getAngleType(89), "Acute angle");
+  assert.equal(getAngleType(36), "Acute angle");
+  assert.equal(getAngleType(20), "Acute angle");
+
+});
+
+test("classifies obtuse angles", () => {
+  assert.equal(getAngleType(91), "Obtuse angle");
+  assert.equal(getAngleType(105), "Obtuse angle");
+  assert.equal(getAngleType(179), "Obtuse angle");
+  assert.equal(getAngleType(125), "Obtuse angle");
+  assert.equal(getAngleType(110), "Obtuse angle");
+});
+
+test("classifies straight angles", () => {
+  const straight = getAngleType(180);
+  assert.equal(straight, "Straight angle");
+});
+
+test("classifies reflex angles", () => {
+  assert.equal(getAngleType(181), "Reflex angle");
+  assert.equal(getAngleType(220), "Reflex angle");
+  assert.equal(getAngleType(289), "Reflex angle");
+  assert.equal(getAngleType(300), "Reflex angle");
+  assert.equal(getAngleType(349), "Reflex angle");
+});
+
+test("classifies invalid angles", () => {
+  assert.equal(getAngleType(-5), "Invalid angle");
+  assert.equal(getAngleType(0), "Invalid angle");
+  assert.equal(getAngleType(360), "Invalid angle");
+  assert.equal(getAngleType(400), "Invalid angle");
+  assert.equal(getAngleType(420), "Invalid angle");
+});

implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js

@@ -6,7 +6,75 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 // TODO: Write tests to cover all cases.
 // What combinations of numerators and denominators should you test?
 
-test("Basic proper fraction", () => {
+test("Returns true for a basic proper fraction", () => {
   // Example: 1/2 is a proper fraction
   assert.equal(isProperFraction(1, 2), true);
 });
+
+test("Returns true for 2/8", () => {
+  assert.equal(isProperFraction(2, 8), true);
+});
+
+test("Returns true when the numerator is zero and denominator is positive", () => {
+  assert.equal(isProperFraction(0, 1), true);
+});
+
+test("Returns true for 5/8", () => {
+  assert.equal(isProperFraction(5, 8), true);
+});
+
+test("Returns true for 8/9", () => {
+  assert.equal(isProperFraction(8, 9), true);
+});
+
+test("Returns true for another proper fraction with a smaller numerator", () => {
+  assert.equal(isProperFraction(2, 4), true);
+});
+
+test("Returns true when both numerator and denominator is negative", () => {
+  assert.equal(isProperFraction(-1, -2), true);
+});
+
+test("Returns true when the numerator is positive denominator is negative", () => {
+  assert.equal(isProperFraction(1, -2), true);
+});
+
+test("Returns true when the numerator is negative and the denominator is positive", () => {
+  assert.equal(isProperFraction(-1, 2), true);
+});
+
+test("Returns false when the numerator is greater than the denominator", () => {
+  assert.equal(isProperFraction(9, 8), false);
+});
+
+test("Returns false when numerator is negative and denominator is zero", () => {
+  assert.equal(isProperFraction(-1, 0), false);
+});
+
+test("Returns false for 4/2", () => {
+  assert.equal(isProperFraction(4, 2), false);
+});
+
+test("Returns false for 5/3", () => {
+  assert.equal(isProperFraction(5, 3), false);
+});
+
+test("Returns false for 6/4", () => {
+  assert.equal(isProperFraction(6, 4), false);
+});
+
+test("Returns false for 7/1", () => {
+  assert.equal(isProperFraction(7, 1), false);
+});
+
+test("Returns false for 15/14", () => {
+  assert.equal(isProperFraction(15, 14), false);
+});
+
+test("Returns false when numerator equals denominator", () => {
+  assert.equal(isProperFraction(4, 4), false);
+});
+
+test("Returns false when numerator is positive and denominator is zero", () => {
+  assert.equal(isProperFraction(1,0), false);
+})

implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js

@@ -9,8 +9,53 @@ test("Valid single-digit card", () => {
   assert.equal(getCardValue("9♠"), 9);
 });
 
+test("Ace has a value of 11", () => {
+  assert.equal(getCardValue("A♠"), 11);
+});
+
+test("Two has a value of 2", () => {
+  assert.equal(getCardValue("2♥"), 2);
+});
+
+test("Ten has a value of 10", () => {
+  assert.equal(getCardValue("10♥"), 10);
+});
+
+test("Jack has a value of 10", () => {
+  assert.equal(getCardValue("J♣"), 10);
+});
+
+test("Queen has a value of 10", () => {
+  assert.equal(getCardValue("Q♦"), 10);
+});
+
+test("King has a value of 10", () => {
+  assert.equal(getCardValue("K♦"), 10);
+});
+
 test("Arbitrary non-card string", () => {
   assert.throws(() => getCardValue("invalid"), /Expected a number followed by a suit, but got "invalid"/, "Expected clear error");
 });
 
-// TODO: What other invalid card cases can you think of?
+test("Invalid rank throws an error", () => {
+  assert.throws(() => getCardValue("Z♠"), /Expected a number followed by a suit, but got "Z♠"/, "Expected clear error");
+});
+
+test("Invalid suit throws an error", () => {
+  assert.throws(() => getCardValue("9X"), /Expected a number followed by a suit, but got "9X"/, "Expected clear error");
+});
+
+test("Card without a suit throws an error", () => {
+  assert.throws(() => getCardValue("9"), /Expected a number followed by a suit, but got "9"/, "Expected clear error");
+});
+
+test("Card without a rank throws an error", () => {
+  assert.throws(() => getCardValue("♠"), /Expected a number followed by a suit, but got "♠"/, "Expected clear error");
+});
+
+test("Card without a number greater than 10 throws an error", () => {
+  assert.throws(() => getCardValue("15♠"), /Expected a number followed by a suit, but got "15♠"/, "Expected clear error");
+});
+
+
+// TODO: What other invalid card cases can you think of?

implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -17,5 +17,24 @@
 // execute the code to ensure all tests pass.
 
 export function getAngleType(angle) {
-  // TODO: Implement this function
+  if (angle === 90) {
+    return "Right angle";
+  }
+
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  }
+
+  if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  }
+
+  if (angle === 180) {
+    return "Straight angle";
+  }
+  if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
+
+  return "Invalid angle";
 }

implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -14,5 +14,5 @@
 // execute the code to ensure all tests pass.
 
 export function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return Math.abs(numerator) < Math.abs(denominator)
 }

implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -23,6 +23,28 @@
 // After you have implemented the function, write tests to cover all the cases, and
 // execute the code to ensure all tests pass.
 
+
 export function getCardValue(card) {
-  // TODO: Implement this function
-}
+  const rank = card.slice(0, -1);
+  const suit = card.slice(-1);
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validRanks = ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"];
+
+  if (!validSuits.includes(suit)) {
+    throw new Error (`Expected a number followed by a suit, but got "${card}"`);
+  }  
+
+  if (!validRanks.includes(rank)) {
+    throw new Error(`Expected a number followed by a suit, but got "${card}"`);
+  }    
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  return Number(rank);
+}