Birmingham | ITP Jan-2026 | Arunkumar Akilan | Sprint 3 | Implement and Rewrite Tests

Sprint-3/1-implement-and-rewrite-tests/README.md

@@ -5,14 +5,14 @@ to choose test values that thoroughly test a function.
 
 ## 1 Implement solutions
 
-In the `implement` directory you've got a number of functions you'll need to implement.
+
+Here is a recommended order:
+
+1. `1-get-angle-type.js`In the `implement` directory you've got a number of functions you'll need to implement.
 For each function, you also have a number of different cases you'll need to check for your function.
 
 Write your assertions and build up your program case by case. Don't rush to a solution. The point of these assignments is to learn how to write assertions and build up a program step by step.
 
-Here is a recommended order:
-
-1. `1-get-angle-type.js`
 2. `2-is-proper-fraction.js`
 3. `3-get-card-value.js`
 

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

@@ -15,7 +15,30 @@
 // 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.
@@ -33,5 +56,24 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all cases, including boundary and invalid cases.
 // Example: Identify Right Angles
-const right = getAngleType(90);
+let invalid = getAngleType(0);
+assertEquals(invalid, "Invalid angle");
+let acute = getAngleType(1);
+assertEquals(acute, "Acute angle");
+ acute = getAngleType(89);
+assertEquals(acute, "Acute angle");
+let right= getAngleType(90);
 assertEquals(right, "Right angle");
+let obtuse = getAngleType(91);
+assertEquals(obtuse, "Obtuse angle");
+obtuse = getAngleType(179);
+assertEquals(obtuse, "Obtuse angle");
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
+let reflex = getAngleType(181);
+assertEquals(reflex, "Reflex angle");
+reflex = getAngleType(359);
+assertEquals(reflex, "Reflex angle");
+ invalid = getAngleType(400);
+assertEquals(invalid, "Invalid angle");
+

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

@@ -11,7 +11,18 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  if (denominator === 0){
+    return false;
+  }
+  else if (numerator < denominator)
+  {
+    return true;
+
+  }
+  else
+  {
+    return false;
+  }
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +42,10 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(5, 4), false);
+assertEquals(isProperFraction(3, 3), false);
+assertEquals(isProperFraction(0, 5), true);
+assertEquals(isProperFraction(1, 0), false);
+assertEquals(isProperFraction(-3, 2), true);
+assertEquals(isProperFraction(2, -5), false);
+assertEquals(isProperFraction(-2, -3), false);

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

@@ -22,13 +22,37 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  if(typeof card !== "string" || card.length<2)
+  {
+    throw new Error("Invalid card");
+  }
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validRanks = ["A","2","3","4","5","6","7","8","9","10","J","Q","K"];
+
+   if(!validSuits.includes(suit) || !validRanks.includes(rank))
+  {
+    throw new Error("Invalid card");
+  }
+  else if (rank == "A")
+  {
+    return 11;
+  }
+  else if (["J","Q","K"].includes(rank))
+{
+  return 10
+}
+else {
+  return Number(rank);
+}
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
 // This will be useful in the "rewrite tests with jest" step.
+//module.exports = getCardValue;
 module.exports = getCardValue;
-
 // Helper functions to make our assertions easier to read.
 function assertEquals(actualOutput, targetOutput) {
   console.assert(
@@ -40,13 +64,40 @@ 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("K♦"), 10); 
+assertEquals(getCardValue("10♥"), 10);
 
 // Handling invalid cards
 try {
-  getCardValue("invalid");
+  getCardValue("11♠");
+  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("A");
 
-  // This line will not be reached if an error is thrown as expected
+
+  console.error("Error was not thrown for invalid card");
+} catch (e) {}
+try {
+  getCardValue("10");
+
+
   console.error("Error was not thrown for invalid card");
 } catch (e) {}
 
 // What other invalid card cases can you think of?
+//try {
+  //getCardValue("AA");
+//console.error("Error was not thrown for invalid card");
+//} catch (e) {}
+//try {
+  //getCardValue("1♠");
+
+
+  //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

@@ -9,9 +9,28 @@ const getAngleType = require("../implement/1-get-angle-type");
 test(`should return "Acute angle" when (0 < angle < 90)`, () => {
   // Test various acute angles, including boundary cases
   expect(getAngleType(1)).toEqual("Acute angle");
-  expect(getAngleType(45)).toEqual("Acute angle");
+  //expect(getAngleType(45)).toEqual("Acute angle");
   expect(getAngleType(89)).toEqual("Acute angle");
 });
+test(`should return "Right angle" when (angle = 90)`, () => {
+  // Test various acute angles, including boundary cases
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+test(`should return"Obtuse angle" when (90 < angle< 180)`, ()=>{
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+test(`should return "Straight angle" when ( angle = 180)`,()=>{
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
+test(`should return "Reflex angle" when (180 < angle <360)`, ()=>{
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+
+});
+test(`should return "invalid angle when angles outside the valid range`, ()=>{
+  expect(getAngleType(0)).toEqual("Invalid angle")
+})
 
 // Case 2: Right angle
 // Case 3: Obtuse angles

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

@@ -8,3 +8,24 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+test(`Should return true when numerator is zero`, ()=>{
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+test(`should return true when denominator is greater than numerator`, () =>{
+expect(isProperFraction(1, 2)).toEqual(true);
+});
+test(`should return false when numerator is greater than denominator`, ()=> {
+  expect(isProperFraction(5, 4)).toEqual(false);
+});
+test(`should return false when numerator is equals to denominator`, ()=>{
+expect(isProperFraction(3, 3)).toEqual(false);
+});
+test(`should return true when denominator is greater than negative numerator`, ()=>{
+  expect(isProperFraction(-3, 2)).toEqual(true);
+});
+test(`should return false when numerator is greater than denominator`, ()=> {
+  expect(isProperFraction(2, -5)).toEqual(false);
+});
+test(`should return false when negative numerator is greater than negative denominator`, ()=> {
+  expect(isProperFraction(-2, -3)).toEqual(false);
+});

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

@@ -8,7 +8,27 @@ const getCardValue = require("../implement/3-get-card-value");
 test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
 });
-
+test(`should return 9 when given a 9♠ card`,()=>{
+  expect(getCardValue("9♠")).toEqual(9);
+});
+test (`should return 10 when given a face card K♦`, ()=>{
+  expect(getCardValue("K♦")).toEqual(10);
+});
+test(`should return 10 when given a 10`, ()=>{
+  expect(getCardValue("10♥")).toEqual(10);
+});
+test(`should throw error for invalid Ranks`, ()=>{
+  expect(()=> getCardValue("11♠")).toThrow();
+});
+test(`should throw error for invalid Suits`, ()=>{
+  expect(()=> getCardValue("A?")).toThrow();
+});
+test(`should throw error for missing Suits`,()=>{
+  expect(()=> getCardValue("A")).toThrow();
+});
+test(`should throw error for non String input`, ()=>{
+  expect(()=> getCardValue("10")).toThrow();
+});
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
 //   Face Cards (J, Q, K)