West Midlands | ITP SEP | Jonathan Boahene | Sprint 3 |Implement and Rewrite Tests

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -12,7 +12,19 @@ function getAngleType(angle) {
     return "Right angle";
   }
    // Run the tests, work out what Case 2 is testing, and implement the required code here.
-   // Then keep going for the other cases, one at a time.
+  // Then keep going for the other cases, one at a time.
+  if (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";
+  }
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -51,13 +63,18 @@ assertEquals(acute, "Acute angle");
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
 // ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(obtuse, "Obtuse angle");
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle/line");
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
+// ====> write your test here, and then add a line to pass the test in the function above
+const reflex = getAngleType(270);
+assertEquals(reflex, "Reflex angle");

Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -8,9 +8,10 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-  if (numerator < denominator) {
+  if (Math.abs(numerator) < Math.abs(denominator)) {
     return true;
   }
+  return false;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -47,13 +48,34 @@ assertEquals(improperFraction, false);
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
 // ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
 // ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
-// What other scenarios could you test for?
+// What other scenarios could you test for? Zero numerator => always proper
+const zeroNumerator = isProperFraction(0, 10);
+assertEquals(zeroNumerator, true);
+
+//Negarive denominator => use absoluet values
+const negativeDenominator = isProperFraction(3, -5);
+assertEquals(negativeDenominator, true);
+
+//Both negatives
+const bothNegative = isProperFraction(-2, -3);
+assertEquals(bothNegative, true);
+
+//fractions like 8/8 should be false
+const improperEqual = isProperFraction(9, 9);
+assertEquals(improperEqual, false);
+
+//zero denominator - maths says undefined so can return false or throw error
+const zeroDenominator = isProperFraction(1, 0);
+assertEquals(zeroDenominator, false);
+

Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js

@@ -8,9 +8,19 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
-  if (rank === "A") {
-    return 11;
+  const rank = card.slice(0, -1); //everything except the suit
+  if (rank === "A") return 11;
+
+  if (["J", "Q", "K", "10"].includes(rank)) {
+    return 10;
+  }
+
+  const num = Number(rank);
+  if (!isNaN(num) && num >= 2 && num <= 9) {
+    return num;
   }
+  throw new Error("Invalid card rank");
+
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -40,11 +50,24 @@ assertEquals(aceofSpades, 11);
 // Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
 const fiveofHearts = getCardValue("5♥");
 // ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(fiveofHearts, 5);
 
 // Handle Face Cards (J, Q, K):
 // Given a card with a rank of "10," "J," "Q," or "K",
 // When the function is called with such a card,
 // Then it should return the value 10, as these cards are worth 10 points each in blackjack.
+const jack = getCardValue("J♣");
+assertEquals(jack, 10);
+
+const queen = getCardValue("Q♦");
+assertEquals(queen, 10);
+
+const king = getCardValue("K♥");
+assertEquals(king, 10);
+
+const ten = getCardValue("10♠");
+assertEquals(ten, 10);
+
 
 // Handle Ace (A):
 // Given a card with a rank of "A",
@@ -55,3 +78,10 @@ const fiveofHearts = getCardValue("5♥");
 // Given a card with an invalid rank (neither a number nor a recognized face card),
 // When the function is called with such a card,
 // Then it should throw an error indicating "Invalid card rank."
+try {
+  getCardValue("Z♠");
+  console.assert(false, "Expected an error for invalid rank");
+} catch (e) {
+  assertEquals(e.message, "Invalid card rank");
+}
+

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js

@@ -12,15 +12,34 @@ test("should identify right angle (90°)", () => {
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify acute angles (< 90°)", () => {
+  expect(getAngleType(30)).toEqual("Acute angle");
+  expect(getAngleType(1)).toEqual("Acute angle");
+  expect(getAngleType(89)).toEqual("Acute angle");
+});
 
 // Case 3: Identify Obtuse Angles:
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
+test("should identify obtuse angles (90° < angle < 180°)", () => {
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+  expect(getAngleType(100)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
+test("should identify straight angles (180°)", () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
+test("should identify reflex angles (180° < angle < 360°)", () => {
+  expect(getAngleType(200)).toEqual("Reflex angle");
+  expect(getAngleType(250)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});

prep/example.js

@@ -0,0 +1,15 @@
+// function decimalTopercent(num){
+// 	let percent = num * 100;
+// 	return percent
+// }
+// console.log(decimalTopercent(0.5) + "%");
+
+function convertToPercentage(decimalNumber) {
+  const percentage = `${decimalNumber * 100}%`;
+  return percentage;
+}
+
+const result = convertToPercentage(0.5);
+const result1 = convertToPercentage(0.231);
+console.log(result);
+console.log(result1);