Complete Sprint 3 implement-and-rewrite exercises

Author: Enice-Codes

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

@@ -1,3 +1,4 @@
+
 // Implement a function getAngleType
 //
 // When given an angle in degrees, it should return a string indicating the type of angle:
@@ -13,9 +14,19 @@
 // Acceptance criteria:
 // After you have implemented the function, write tests to cover all the cases, and
 // 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.
@@ -34,4 +45,22 @@ function assertEquals(actualOutput, 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");
+assertEquals(right, "right angle");
+   
+const acute = getAngleType(45);
+assertEquals(acute, 'Acute angle');
+
+const obtuse = getAngleType(120);
+assertEquals(obtuse,'obtuse angle')
+  
+const straight = getAngleType(180); 
+assertEquals(straight, 'straight angle');
+
+const reflex = getAngleType(270);
+assertEquals(reflex, 'reflex angle');
+
+const invalid1 = getAngleType(-10);
+assertEquals(invalid1, 'Invalid angle');
+
+const invalid2 = getAngleType(400);
+assertEquals(invalid2, 'Invalid angle');

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

@@ -12,6 +12,14 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (denominator === 0){
+    return false;
+  
+  }
+  if (numerator < denominator && numerator > 0){
+    return true;
+  }
+  return false;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +39,15 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+// example: 4/3 is not a proper fraction
+assertEquals(isProperFraction(4, 3), false);
+
+// example: 6/5 is not a proper fraction
+assertEquals(isProperFraction(6, 5), false);
+
+// example: 0/5 is a proper fraction
+assertEquals(isProperFraction(0, 5), true);
+
+// example: 5/0 is not a proper fraction
+assertEquals(isProperFraction(5, 0), false);

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

@@ -22,7 +22,23 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const rank = card.slice(0, -1); // everything except the last character (suit)
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const suit = card.slice(-1);
+
+  if (!validSuits.includes(suit)) {
+    throw new Error("Invalid card");
+  }
+
+  if (rank === "A") {
+    return 11;
+  } else if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  } else if (["2","3","4","5","6","7","8","9","10"].includes(rank)) {
+    return Number(rank);
+  } else {
+    throw new Error("Invalid card");
+  }
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -46,9 +62,37 @@ try {
   getCardValue("invalid");
 
   // This line will not be reached if an error is thrown as expected
-  console.error("Error was not thrown for invalid card 😢");
+  console.error("Error was not thrown for invalid card ");
 } catch (e) {
-  console.log("Error thrown for invalid card 🎉");
+  console.log("Error thrown for invalid card ");
 }
 
+assertEquals(getCardValue("A♠"), 11);
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("K♥"), 10);
+assertEquals(getCardValue("2♠"), 2);
+assertEquals(getCardValue("3♥"), 3);
+
+// What other valid card cases can you think of?
+function assertEqual(func, message) {
+  try {
+    func();
+    console.log("Valid card test passed: " + message);
+  } catch (e) {
+    console.error("Valid card test failed: " + message + " — " + e.message);
+  }
+}
 // What other invalid card cases can you think of?
+ function  assertThrows(func, errorMessage) {
+  try {
+    func();
+    console.error("Error was not thrown ");
+  } catch (e) {
+    if (e.message === errorMessage) {
+      console.log("Error thrown as expected ");
+    } else {
+      console.error(`Unexpected error message: ${e.message}`);
+    }
+  }
+}

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

@@ -6,15 +6,36 @@ const getAngleType = require("../implement/1-get-angle-type");
 // including boundary and invalid cases.
 
 // Case 1: Acute angles
-test(`should return "Acute angle" when (0 < angle < 90)`, () => {
+test(`should return "Acute angle" when (0 < angle && angle  < 90)`, () => {
   // Test various acute angles, including boundary cases
   expect(getAngleType(1)).toEqual("Acute angle");
   expect(getAngleType(45)).toEqual("Acute angle");
   expect(getAngleType(89)).toEqual("Acute angle");
 });
 
 // Case 2: Right angle
+test (`should return "right angle" when (angle === 90)`,() => {
+  // testing various angles ,including boundary cases
+  expect( getAngleType(90)).toEqual("right angle");
+  });
 // Case 3: Obtuse angles
+test (`should return "obtuse angle" when (90 < angle && angle < 180)`, () => {
+expect(getAngleType(91)).toEqual("obtuse angle");
+expect(getAngleType(125)).toEqual("obtuse angle");
+expect(getAngleType(172)).toEqual("obtuse angle");
+});
 // Case 4: Straight angle
-// Case 5: Reflex angles
+test(`should return "straight angle" when (angle === 180)`, () => {
+  expect(getAngleType(180)).toEqual("straight angle");
+});
+// Case 5: Reflex angles\
+test(`should return "reflex angle" when (180 < angle && 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 || angle > 360)`, () => {
+  expect(getAngleType(-1)).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

@@ -8,3 +8,17 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+ 
+// special case : numerator is one 
+test(` should return true when the numerator is one and denominator is greater than one`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+});
+// special case : denominator is negative to the numerator
+test(`should return false when the denominator is negative and the numerator is positive`, () => {
+  expect(isProperFraction(1, -2)).toEqual(false);
+});
+
+// special case : denominator  is negative to the numerator
+test(`should return false when the numerator is negative and the denominator is positive`, () => {
+  expect(isProperFraction(-1, 2)).toEqual(false);
+});

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

@@ -9,10 +9,24 @@ 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
+// case 2 : face cards (J, Q, K)
+test(`Should return 10 when given a face card`, () => {
+  expect(getCardValue("J♠")).toEqual(10);
+  expect(getCardValue("Q♥")).toEqual(10);
+  expect(getCardValue("K♦")).toEqual(10);
+});
+
+// Case 3: Number Cards (2-10)
+test(`Should return the correct value when given a number card`, () => {
+  expect(getCardValue("2♠")).toEqual(2);
+  expect(getCardValue("5♥")).toEqual(5);
+  expect(getCardValue("10♦")).toEqual(10);
+});
+
+// Case 4: Invalid Cards
+test(`Should throw an error when given an invalid card`, () => {
+  expect(() => getCardValue("invalid")).toThrow("Invalid card");
+});
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation: