London | 26-ITP-May | Damilola Odumosu| Sprint 3 | 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"
+    } if (angle === 90) {
+        return "Right angle"
+    } if (angle > 90 && angle < 180) {
+        return "Obtuse angle"
+    } if (angle === 180) {
+        return "Straight angle"
+    } 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.
@@ -25,13 +37,44 @@ module.exports = getAngleType;
 // This helper function is written to make our assertions easier to read.
 // If the actual output matches the target output, the test will pass
 function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
-    `Expected ${actualOutput} to equal ${targetOutput}`
-  );
+    console.assert(
+        actualOutput === targetOutput,
+        `Expected ${actualOutput} to equal ${targetOutput}`
+    );
 }
 
 // TODO: Write tests to cover all cases, including boundary and invalid cases.
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+const invalid = getAngleType(0);
+assertEquals(invalid, "Invalid angle");
+
+const acute = getAngleType(89);
+assertEquals(acute, "Acute angle");
+
+const obtuse = getAngleType(91);
+assertEquals(obtuse, "Obtuse angle");
+
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle")
+
+const invalid1 = getAngleType(360);
+assertEquals(invalid1, "Invalid angle")
+
+const acute1 = getAngleType(1);
+assertEquals(acute1, "Acute angle")
+
+const obtuse1 = getAngleType(179);
+assertEquals(obtuse1, "Obtuse angle")
+
+const reflex = getAngleType(181);
+assertEquals(reflex, "Reflex angle")
+
+const  reflex1 = getAngleType(359);
+assertEquals(reflex1, "Reflex angle")
+
+const  invalid2 = getAngleType(-1);
+assertEquals(invalid2, "Invalid angle")
+

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

@@ -11,7 +11,7 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return denominator !== 0 && Math.abs(numerator / denominator) < 1;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -26,8 +26,19 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all cases.
 // What combinations of numerators and denominators should you test?
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(2, 1), false);
+assertEquals(isProperFraction(5, 5), false);
+assertEquals(isProperFraction(0, 5), true);
+assertEquals(isProperFraction(5, 0), false);
+assertEquals(isProperFraction(0, 0), false);
+assertEquals(isProperFraction(-1, 2), true);
+assertEquals(isProperFraction(1, -2), true);
+assertEquals(isProperFraction(-2, -1), false);
+assertEquals(isProperFraction(-1, -2), true);
+assertEquals(isProperFraction(0.5, 1), true);
+assertEquals(isProperFraction(1.5, 1), false);
+assertEquals(isProperFraction(999999999, 1000000000), true);

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

@@ -22,7 +22,43 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  if (card === "") {
+    throw new Error("No card was played");
+  }
+  if (card.length < 2 || card.length > 3) {
+    throw new Error("Invalid card");
+  }
+
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validRanks = [
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ];
+
+  const suit = card.slice(-1);
+  if (!validSuits.includes(suit)) {
+    throw new Error("Invalid card: suit is not recognised");
+  }
+
+  const rank = card.slice(0, -1).toUpperCase();
+  if (!validRanks.includes(rank)) {
+    throw new Error("Invalid card: rank is not recognised");
+  }
+  if (rank === "A") return 11;
+  if (["J", "Q", "K"].includes(rank)) return 10;
+
+  return Number(rank);
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -37,18 +73,58 @@ function assertEquals(actualOutput, targetOutput) {
   );
 }
 
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
-assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("A♠"), 11);
+assertEquals(getCardValue("A♥"), 11);
+assertEquals(getCardValue("A♦"), 11);
+assertEquals(getCardValue("A♣"), 11);
+assertEquals(getCardValue("2♠"), 2);
+assertEquals(getCardValue("3♥"), 3);
+assertEquals(getCardValue("4♦"), 4);
+assertEquals(getCardValue("5♣"), 5);
+assertEquals(getCardValue("6♠"), 6);
+assertEquals(getCardValue("7♥"), 7);
+assertEquals(getCardValue("8♦"), 8);
+assertEquals(getCardValue("9♣"), 9);
+assertEquals(getCardValue("10♠"), 10);
+assertEquals(getCardValue("J♠"), 10);
+assertEquals(getCardValue("Q♥"), 10);
+assertEquals(getCardValue("K♦"), 10);
 
 // Handling invalid cards
 try {
-  getCardValue("invalid");
+  getCardValue("");
 
   // This line will not be reached if an error is thrown as expected
   console.error("Error was not thrown for invalid card 😢");
 } catch (e) {
-  console.log("Error thrown for invalid card 🎉");
+  console.log(e);
+}
+
+//  What other invalid card cases can you think of?
+try {
+  getCardValue("100");
+  console.error("Error was not thrown for card with more than 3 in length");
+} catch (e) {
+  console.log(e);
+}
+try {
+  getCardValue("1");
+  console.error("Error was not thrown for a card.lenght = 1");
+} catch (e) {
+  console.log(e);
 }
 
-// What other invalid card cases can you think of?
+try {
+  getCardValue("♦");
+  console.error("Error was not thrown for a card play of just suits");
+} catch (e) {
+  console.log(e);
+}
+
+try {
+  getCardValue("A😊");
+  console.error("Error was not thrown for a card play of a wrong suit");
+} catch (e) {
+  console.log(e);
+}

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

@@ -2,19 +2,35 @@
 // We will use the same function, but write tests for it using Jest in this file.
 const getAngleType = require("../implement/1-get-angle-type");
 
-// TODO: Write tests in Jest syntax to cover all cases/outcomes,
-// including boundary and invalid cases.
-
 // Case 1: Acute angles
-test(`should return "Acute angle" when (0 < angle < 90)`, () => {
-  // Test various acute angles, including boundary cases
+test(`should return "Acute angle" when angle is greater than 0 or angle is less than 90')`, () => {
   expect(getAngleType(1)).toEqual("Acute angle");
   expect(getAngleType(45)).toEqual("Acute angle");
   expect(getAngleType(89)).toEqual("Acute angle");
 });
 
-// Case 2: Right angle
-// Case 3: Obtuse angles
+// Case 2: Obtuse angle
+test(`should return "obtuse angle" when angle is greater than 90 but less than 180 `, () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+// Case 3: Right angles
+test(`should return "Right angle" when (angle === 90)`, () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+
 // Case 4: Straight angle
+test(`should return "Straight angle" when (angle === 180)`, () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 // Case 5: Reflex angles
+test(`should return "Reflect angle" when angle is greater than 180 but less than 360))`, () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
 // Case 6: Invalid angles
+test(`"should return 'Invalid angle' when angle is 0, 360, less than 0, or greater than 360")`, () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(-1)).toEqual("Invalid angle");
+});

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

@@ -2,9 +2,51 @@
 // We will use the same function, but write tests for it using Jest in this file.
 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.
+// Proper fraction
+test("should return true when the denominator is greater than the numerator", () => {
+  expect(isProperFraction(1, 2)).toBe(true);
+});
+
+// Improper fraction
+test("should return false when the numerator is greater than the denominator", () => {
+  expect(isProperFraction(2, 1)).toBe(false);
+});
+
+// Zero numerator
+test("should return true when the numerator is zero", () => {
+  expect(isProperFraction(0, 5)).toBe(true);
+});
+
+// Zero denominator
+test("should return false when the denominator is zero", () => {
+  expect(isProperFraction(5, 0)).toBe(false);
+});
+
+// numerator equals denominator
+test("should return false when numerator equals denominator ", () => {
+  expect(isProperFraction(5, 5)).toBe(false);
+});
+
+// Both numerator and denominator are zero
+test("should return false when both the numerator and denominator are zero", () => {
+  expect(isProperFraction(0, 0)).toBe(false);
+});
+
+// Negative numbers
+test("should correctly identify proper fractions when given negative numbers", () => {
+  expect(isProperFraction(-1, 2)).toBe(true);
+  expect(isProperFraction(1, -2)).toBe(true);
+  expect(isProperFraction(-1, -2)).toBe(true);
+  expect(isProperFraction(-2, -1)).toBe(false);
+});
+
+// Decimal numbers
+test("should correctly identify proper fractions when given decimal numbers", () => {
+  expect(isProperFraction(0.5, 1)).toBe(true);
+  expect(isProperFraction(1.5, 1)).toBe(false);
+});
 
-// Special case: numerator is zero
-test(`should return false when denominator is zero`, () => {
-  expect(isProperFraction(1, 0)).toEqual(false);
+// Large numbers
+test("should correctly identify proper fractions when given very large numbers", () => {
+  expect(isProperFraction(999999999, 1000000000)).toBe(true);
 });

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

@@ -2,19 +2,38 @@
 // We will use the same function, but write tests for it using Jest in this file.
 const getCardValue = require("../implement/3-get-card-value");
 
-// TODO: Write tests in Jest syntax to cover all possible outcomes.
-
-// Case 1: Ace (A)
+// Ace (A)
 test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
 });
 
-// Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
-//   Face Cards (J, Q, K)
-//   Invalid Cards
+test(`Should return the card's numeric rank for cards 2 through 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);
+});
 
-// 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
+//   Face Cards (J, Q, K)
+test(`should return 10 When the card is a face card ("J", "Q", "K")`, () => {
+  expect(getCardValue("j♠")).toEqual(10);
+  expect(getCardValue("k♦")).toEqual(10);
+  expect(getCardValue("q♣")).toEqual(10);
+});
 
+//   Invalid Cards
+test("should throw an error when an invalid card is played", () => {
+  expect(() => getCardValue("")).toThrow("No card was played");
+  expect(() => getCardValue("X♠")).toThrow(
+    "Invalid card: rank is not recognised"
+  );
+  expect(() => getCardValue("9X")).toThrow(
+    "Invalid card: suit is not recognised"
+  );
+});