LONDON | Pooriya Ketabi | Module-Structuring-and-Testing-Data | Sprint 3

CYF/ordinal-testing-example/get-ordinal-number.test.js

@@ -0,0 +1,9 @@
+function getOrdinalNumber() {
+    return "1st";
+}
+
+test("converts 1 to an ordinal number", function() {
+    expect(getOrdinalNumber(1)).toEqual("1st");
+    expect(getOrdinalNumber(11)).toEqual("11th");
+    expect(getOrdinalNumber(21)).toEqual("21st");
+});

CYF/ordinal-testing-example/package.json

@@ -0,0 +1,10 @@
+{
+    "name": "ordinal-testing-example",
+    "description": "An example application showing how to write tests using the jest framework",
+    "scripts": {
+    "test": "jest"
+    },
+    "devDependencies": {
+        "jest": "^29.7.0"
+    }
+}

Sprint-3/implement/get-angle-type.js

@@ -25,3 +25,22 @@
 // Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
+
+
+function getAngleType(angle) {
+    if (angle === 90) {
+        return "Right angle";
+    }   else if (angle < 90) {
+        return "Acute angle";
+    }   else if (angle > 90 && 180 > angle) {
+        return "Obtuse angle";
+    }   else if (angle === 180) {
+        return "Straight angle";
+    }   else if (angle > 180 && 360 > angle) {
+        return "Reflex angle";
+    }   else {
+        return "Invalid Input"
+    }
+}
+
+console.log(getAngleType(361));

Sprint-3/implement/get-card-value.js

@@ -29,3 +29,22 @@
 // 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."
+
+function getCardValue(card) {
+  let rank = card.slice(0, -1);
+  if (parseInt(rank) >= 2 && parseInt(rank) <= 10) {
+    return parseInt(rank);
+  }
+  switch (rank) {
+    case "J":
+    case "Q":
+    case "K":
+      return 10;
+    case "A":
+      return 11;
+    default:
+      throw new Error("Invalid card rank");
+  }
+}
+
+module.exports = getCardValue;

Sprint-3/implement/get-card-value.test.js

@@ -0,0 +1,20 @@
+const getCardValue = require("./get-card-value");
+test("should return the correct value for number cards (2-10)", () => {
+  expect(getCardValue("2♠")).toBe(2);
+  expect(getCardValue("9♥")).toBe(9);
+  expect(getCardValue("10♦")).toBe(10);
+});
+
+test("should return 10 for face cards (J, Q, K)", () => {
+  expect(getCardValue("J♠")).toBe(10);
+  expect(getCardValue("Q♣")).toBe(10);
+  expect(getCardValue("K♦")).toBe(10);
+});
+
+test("should return 11 for an Ace (A)", () => {
+  expect(getCardValue("A♠")).toBe(11);
+});
+
+test("should throw an error for an invalid card rank", () => {
+  expect(() => getCardValue("Z♠")).toThrow("Invalid card rank");
+});

Sprint-3/implement/is-proper-fraction.js

@@ -32,3 +32,46 @@
 // 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.
 // These acceptance criteria cover a range of scenarios to ensure that the isProperFraction function handles both proper and improper fractions correctly and handles potential errors such as a zero denominator.
+
+function isProperFraction(numerator, denominator) {
+  if (denominator === 0) {
+    throw new Error("Denominator cannot be zero");
+  }
+  return Math.abs(numerator) < Math.abs(denominator);
+}
+
+// ---------------------------------------- Tests: ----------------------------------------
+// -------- Proper Fraction --------
+console.assert(
+  isProperFraction(2, 3) === true,
+  "Test failed: 2/3 should be a proper fraction"
+);
+
+// -------- Improper Fraction --------
+console.assert(
+  isProperFraction(5, 2) === false,
+  "Test failed: 5/2 should not be a proper fraction"
+);
+
+// -------- Zero Denominator --------
+try {
+  isProperFraction(3, 0);
+  console.error("Test failed: Denominator is zero, but no error was thrown");
+} catch (e) {
+  console.assert(
+    e.message === "Denominator cannot be zero",
+    "Test failed: Error message is incorrect"
+  );
+}
+
+// -------- Negative Fraction --------
+console.assert(
+  isProperFraction(-4, 7) === true,
+  "Test failed: -4/7 should be a proper fraction"
+);
+
+// -------- Equal Numerator and Denominator --------
+console.assert(
+  isProperFraction(3, 3) === false,
+  "Test failed: 3/3 should not be a proper fraction"
+);

Sprint-3/implement/is-valid-triangle.js

@@ -33,3 +33,16 @@
 // Then it should return true because the input forms a valid triangle.
 
 // This specification outlines the behavior of the isValidTriangle function for different input scenarios, ensuring it properly checks for invalid side lengths and whether they form a valid triangle according to the Triangle Inequality Theorem.
+
+function isValidTriangle(a, b, c) {
+  if (a <= 0 || b <= 0 || c <= 0) {
+    return false;
+  }
+  if (a + b > c && a + c > b && b + c > a) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+module.exports = isValidTriangle;

Sprint-3/implement/is-valid-triangle.test.js

@@ -0,0 +1,28 @@
+const isValidTriangle = require("./is-valid-triangle");
+
+test("should return true for a valid triangle", () => {
+    expect(isValidTriangle(3, 4, 5)).toBe(true);
+    expect(isValidTriangle(5, 5, 5)).toBe(true);
+    expect(isValidTriangle(8, 10, 6)).toBe(true);
+});
+
+test("should return true for sides 2, 2, 3", () => {
+    expect(isValidTriangle(2, 2, 3)).toBe(true);
+});
+
+test("should return false (violates inequality)", () => {
+    expect(isValidTriangle(1, 2, 3)).toBe(false);
+});
+
+ test("should return false as one side length is 0", () => {
+    expect(isValidTriangle(0, 5, 7)).toBe(false);
+});
+
+test("should return false as one side has negative length", () => {
+    expect(isValidTriangle(3, -4, 5)).toBe(false);
+});
+
+ test("should return false (violates inequality)", () => {
+    expect(isValidTriangle(5, 1, 1)).toBe(false);
+    expect(isValidTriangle(1, 1, 2)).toBe(false);
+  });