London | 26-ITP-Jan | Boualem Larbi Djebbour | sprint 3 | implement and rewrite tests coursework

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

@@ -15,7 +15,19 @@
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+  if ((angle > 0) & (angle < 90)) {
+    return "acute angle";
+  } else if (angle == 90) {
+    return "right angle";
+  } else if (angle > 90 && angle < 180) {
+    return "obtuse angle";
+  } else if (angle == 180) {
+    return "straight angle";
+  } else if (angle > 180 && angle < 360) {
+    return "reflex angle";
+  } else {
+    return "invalid angle";
+  }
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -35,3 +47,32 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+// Identify acute Angles
+const acute = getAngleType(60);
+assertEquals(acute, "acute angle");
+
+// Identify obtuse Angles
+const obtuse = getAngleType(120);
+assertEquals(obtuse, "obtuse angle");
+
+// Identify straight Angles
+const straight = getAngleType(180);
+assertEquals(straight, "straight angle");
+
+// Identify reflex Angles
+const reflex = getAngleType(250);
+assertEquals(reflex, "reflex angle");
+
+// Identify invalid Angles
+const invalid = getAngleType(0);
+assertEquals(invalid, "invalid angle");
+
+const invalid = getAngleType(360);
+assertEquals(invalid, "invalid angle");
+
+const invalid = getAngleType(-100);
+assertEquals(invalid, "invalid angle");
+
+const invalid = getAngleType(1000);
+assertEquals(invalid, "invalid angle");

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

@@ -12,6 +12,11 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (Math.abs(numerator) < Math.abs(denominator)) {
+    return true;
+  } else {
+    return false;
+  }
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +36,15 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+// Example: 2/1 is not a proper fraction
+assertEquals(isProperFraction(2, 1), false);
+// Example: 1/2 is a proper fraction
+assertEquals(isProperFraction(-1, 2), true);
+// Example: -1/2 is a proper fraction
+assertEquals(isProperFraction(-1, -2), true);
+// Example: 1/2 is a proper fraction
+assertEquals(isProperFraction(1, -2), true);
+// Example: -2/1 is not a proper fraction
+assertEquals(isProperFraction(-2, 1), false);
+// Example: 1/2 is not a proper fraction
+assertEquals(isProperFraction(-2, -1), false);

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

@@ -23,6 +23,15 @@
 
 function getCardValue(card) {
   // TODO: Implement this function
+  const cardRank = card.slice(0, -1);
+  const cardSuit = card.slice(-1);
+  if (card.length < 2 || !["♠", "♥", "♦", "♣"].includes(cardSuit))
+    throw new Error("invalid card suit");
+  if (cardRank === "A") return 11;
+  if (["J", "Q", "K"].includes(cardRank)) return 10;
+  if (["2", "3", "4", "5", "6", "7", "8", "9", "10"].includes(cardRank))
+    return Number(cardRank); // the parseint() or Number() can be used to convert the string to a number
+  throw new Error("invalid card rank");
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -41,6 +50,11 @@ function assertEquals(actualOutput, targetOutput) {
 // Examples:
 assertEquals(getCardValue("9♠"), 9);
 
+assertEquals(getCardValue("A♥"), 11);
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♠"), 10);
+assertEquals(getCardValue("2♦"), 2);
+
 // Handling invalid cards
 try {
   getCardValue("invalid");
@@ -50,3 +64,37 @@ try {
 } catch (e) {}
 
 // What other invalid card cases can you think of?
+try {
+  getCardValue("S");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("AJKP");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("A❦");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("29");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("♦,♣");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("2345");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+
+try {
+  getCardValue("");
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}

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

@@ -14,7 +14,33 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when angle is 90`, () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+
 // Case 3: Obtuse angles
+test(`should return "Obtuse angle" when (90 < angle < 180)`, () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 // Case 4: Straight angle
+test(`should return "Straight angle" when angle is 180`, () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
+
 // Case 5: Reflex angles
+test(`should return "Reflex angle" when (180 < angle < 360)`, () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
+
 // Case 6: Invalid angles
+test(`should return "Invalid angle" when (angle <= 0 or angle >= 360)`, () => {
+  expect(getAngleType(-1)).toEqual("Invalid angle");
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(361)).toEqual("Invalid angle");
+});

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

@@ -4,7 +4,33 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 
 // TODO: Write tests in Jest syntax to cover all combinations of positives, negatives, zeros, and other categories.
 
-// Special case: numerator is zero
+// Special case: denominator is zero (undefined)
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
+  // Special case: both numerator and denominator are zeros (undefined)
+  expect(isProperFraction(0, 0)).toEqual(false);
+});
+
+// Special case: numerator is zero (proper fraction)
+test(`should return true for proper fraction`, () => {
+  expect(isProperFraction(0, 1)).toEqual(true);
+  // case: both values are positive and the value of the numerater is less than the value of the denominater (proper fraction)
+  expect(isProperFraction(1, 2)).toEqual(true);
+  // case: the value of the numerater is negative and its absolute value is less than the value of the denominater (roper fraction)
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  // case: the value of the denominator is negative and its absolute value is greater than the value of the numerator (proper fraction)
+  expect(isProperFraction(1, -2)).toEqual(true);
+  // case: both values of the numerator and denominator are negative and the absolute value of the numerator is less than the absolute value of the denominator (proper fraction)
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});
+
+// case: both values are positive and the value of the denominater is less than the value of the numerater (improper fraction)
+test(`should return false for improper fraction`, () => {
+  expect(isProperFraction(2, 1)).toEqual(false);
+  // case: the value of the numerater is negative and its absolute value is greater than the value of the denominater (improper fraction)
+  expect(isProperFraction(-2, 1)).toEqual(false);
+  // case: both values of the numerator and denominator are negative and the absolute value of the numerator is greater than the absolute value of the denominator (improper fraction)
+  expect(isProperFraction(-2, -1)).toEqual(false);
+  // case: the value of the denominator is negative and its absolute value is less than the value of the numerator (improper fraction)
+  expect(isProperFraction(2, -1)).toEqual(false);
 });

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

@@ -7,14 +7,44 @@ const getCardValue = require("../implement/3-get-card-value");
 // Case 1: Ace (A)
 test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+  expect(getCardValue("A♦")).toEqual(11);
+  expect(getCardValue("A♣")).toEqual(11);
 });
 
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
+test("should return the value of number cards (2-10)", () => {
+  expect(getCardValue("2♠")).toEqual(2);
+  expect(getCardValue("3♥")).toEqual(3);
+  expect(getCardValue("4♦")).toEqual(4);
+  expect(getCardValue("5♣")).toEqual(5);
+  expect(getCardValue("6♥")).toEqual(6);
+  expect(getCardValue("7♠")).toEqual(7);
+  expect(getCardValue("8♦")).toEqual(8);
+  expect(getCardValue("9♠")).toEqual(9);
+  expect(getCardValue("10♣")).toEqual(10);
+});
+
 //   Face Cards (J, Q, K)
+test(`Should return the value of face cards (J, Q, K)`, () => {
+  expect(getCardValue("J♠")).toEqual(10);
+  expect(getCardValue("Q♦")).toEqual(10);
+  expect(getCardValue("K♥")).toEqual(10);
+});
 //   Invalid Cards
+test(`Should throw an error when given an invalid card`, () => {
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("2❦")).toThrow();
+  expect(() => getCardValue("11♥")).toThrow();
+  expect(() => getCardValue("B♦")).toThrow();
+  expect(() => getCardValue("Z♣")).toThrow();
+  expect(() => getCardValue("♣2")).toThrow();
+  expect(() => getCardValue("s")).toThrow();
+  expect(() => getCardValue("♣♥♠♦")).toThrow();
+  expect(() => getCardValue("")).toThrow();
+});
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
-