London | 26-ITP-May | Khaliun Baatarkhuu | Sprint 3 | Implement and Rewrite Tests

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

@@ -1,37 +1,61 @@
-// Implement a function getAngleType
-//
-// When given an angle in degrees, it should return a string indicating the type of angle:
-// - "Acute angle" for angles greater than 0° and less than 90°
-// - "Right angle" for exactly 90°
-// - "Obtuse angle" for angles greater than 90° and less than 180°
-// - "Straight angle" for exactly 180°
-// - "Reflex angle" for angles greater than 180° and less than 360°
-// - "Invalid angle" for angles outside the valid range.
-
-// Assumption: The parameter is a valid number. (You do not need to handle non-numeric inputs.)
-
-// 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.
-// This will be useful in the "rewrite tests with jest" step.
-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}`
   );
 }
 
-// TODO: Write tests to cover all cases, including boundary and invalid cases.
-// Example: Identify Right Angles
+assertEquals(getAngleType(45), "Acute angle");
+assertEquals(getAngleType(90), "Right angle");
+assertEquals(getAngleType(120), "Obtuse angle");
+assertEquals(getAngleType(180), "Straight angle");
+assertEquals(getAngleType(270), "Reflex angle");
+assertEquals(getAngleType(360), "Invalid angle");
+
+console.log("All tests finished");
+
+//I have written some tests, passed them all on Devtools. Wrote some more below.
+
+
+const acute = getAngleType(45);
+assertEquals(acute, "Acute angle");
 const right = getAngleType(90);
 assertEquals(right, "Right 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 zero = getAngleType(0);
+assertEquals(zero, "Invalid angle");
+const negative = getAngleType(-10);
+assertEquals(negative, "Invalid angle");
+const fullTurn = getAngleType(360);
+assertEquals(fullTurn, "Invalid angle");
+const tooLarge = getAngleType(400);
+assertEquals(tooLarge, "Invalid angle");
+
+console.log("All tests finished");
+
+
+
+
+

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

@@ -1,33 +1,21 @@
-// Implement a function isProperFraction,
-// when given two numbers, a numerator and a denominator, it should return true if
-// the given numbers form a proper fraction, and false otherwise.
-
-// Assumption: The parameters are valid numbers (not NaN or Infinity).
-
-// Note: If you are unfamiliar with proper fractions, please look up its mathematical definition.
-
-// 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 isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return numerator < denominator;
 }
 
-// The line below allows us to load the isProperFraction function into tests in other files.
-// This will be useful in the "rewrite tests with jest" step.
-module.exports = isProperFraction;
-
-// Here's our helper again
 function assertEquals(actualOutput, targetOutput) {
   console.assert(
     actualOutput === targetOutput,
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
+assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+assertEquals(isProperFraction(0, 5), true);
 
-// TODO: Write tests to cover all cases.
-// What combinations of numerators and denominators should you test?
+assertEquals(isProperFraction(5, 5), false);
 
-// Example: 1/2 is a proper fraction
-assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(7, 4), false);
+assertEquals(isProperFraction(10, 3), false);
+
+console.log("All tests finished");

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

@@ -22,33 +22,90 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
-}
+  const suits = ["♠", "♥", "♦", "♣"];
+
+  const values = {
+    A: 11,
+    J: 10,
+    Q: 10,
+    K: 10,
+    2: 2,
+    3: 3,
+    4: 4,
+    5: 5,
+    6: 6,
+    7: 7,
+    8: 8,
+    9: 9,
+    10: 10,
+  };
 
-// 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;
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+
+  if (!suits.includes(suit) || !(rank in values)) {
+    throw new Error("Invalid card");
+  }
+
+  return values[rank];
+}
 
-// Helper functions to make our assertions easier to read.
 function assertEquals(actualOutput, targetOutput) {
   console.assert(
     actualOutput === targetOutput,
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
+assertEquals(getCardValue("A♠"), 11);
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("9♣"), 9);
+assertEquals(getCardValue("10♦"), 10);
+assertEquals(getCardValue("J♠"), 10);
+assertEquals(getCardValue("Q♥"), 10);
+assertEquals(getCardValue("K♣"), 10);
+
+console.log("All valid card tests passed");
 
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
-assertEquals(getCardValue("9♠"), 9);
+// What other invalid card cases can you think of?
 
-// Handling invalid cards
 try {
-  getCardValue("invalid");
+  getCardValue("1♠");
+  console.error("Error was not thrown for 1♠ 😢");
+} catch (e) {
+  console.log("Error thrown for 1♠ 🎉");
+}
 
-  // This line will not be reached if an error is thrown as expected
-  console.error("Error was not thrown for invalid card 😢");
+try {
+  getCardValue("11♠");
+  console.error("Error was not thrown for 11♠ 😢");
 } catch (e) {
-  console.log("Error thrown for invalid card 🎉");
+  console.log("Error thrown for 11♠ 🎉");
 }
 
-// What other invalid card cases can you think of?
+try {
+  getCardValue("A");
+  console.error("Error was not thrown for A 😢");
+} catch (e) {
+  console.log("Error thrown for A 🎉");
+}
+
+try {
+  getCardValue("♠");
+  console.error("Error was not thrown for ♠ 😢");
+} catch (e) {
+  console.log("Error thrown for ♠ 🎉");
+}
+
+try {
+  getCardValue("KH");
+  console.error("Error was not thrown for KH 😢");
+} catch (e) {
+  console.log("Error thrown for KH 🎉");
+}
+
+try {
+  getCardValue("");
+  console.error("Error was not thrown for empty string 😢");
+} catch (e) {
+  console.log("Error thrown for empty string 🎉");
+}

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

@@ -1,20 +1,39 @@
-// This statement loads the getAngleType function you wrote in the implement directory.
-// 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 (0 < angle < 90)', () => {
   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 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" for invalid values', () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(-1)).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

@@ -1,10 +1,36 @@
-// This statement loads the isProperFraction function you wrote in the implement directory.
-// 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.
+// Special case: denominator is zero
+test("should return false when denominator is zero", () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
 
 // Special case: numerator is zero
-test(`should return false when denominator is zero`, () => {
-  expect(isProperFraction(1, 0)).toEqual(false);
+test("should return true when numerator is zero and denominator is not zero", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+  expect(isProperFraction(0, -5)).toEqual(true);
+});
+
+// Positive proper fractions
+test("should return true for positive proper fractions", () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(2, 5)).toEqual(true);
+});
+
+// Positive improper fractions
+test("should return false for positive improper fractions", () => {
+  expect(isProperFraction(5, 2)).toEqual(false);
+  expect(isProperFraction(2, 2)).toEqual(false);
+});
+
+// Negative proper fractions
+test("should return true for negative proper fractions", () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  expect(isProperFraction(1, -2)).toEqual(true);
+  expect(isProperFraction(-2, -5)).toEqual(true);
+});
+
+// Negative improper fractions
+test("should return false for negative improper fractions", () => {
+  expect(isProperFraction(-5, 2)).toEqual(false);
+  expect(isProperFraction(5, -2)).toEqual(false);
+  expect(isProperFraction(-5, -2)).toEqual(false);
 });

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

@@ -1,20 +1,32 @@
-// This statement loads the getCardValue function you wrote in the implement directory.
-// 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)
-test(`Should return 11 when given an ace card`, () => {
+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: Number cards (2-10)
+test("should return the numeric value for number cards", () => {
+  expect(getCardValue("2♥")).toEqual(2);
+  expect(getCardValue("5♣")).toEqual(5);
+  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
+// Case 3: Face cards (J, Q, K)
+test("should return 10 for face cards", () => {
+  expect(getCardValue("J♠")).toEqual(10);
+  expect(getCardValue("Q♥")).toEqual(10);
+  expect(getCardValue("K♦")).toEqual(10);
+});
+
+// Case 4: Invalid cards
+test("should throw an error for invalid cards", () => {
+  expect(() => getCardValue("invalid")).toThrow();
+  expect(() => getCardValue("1♠")).toThrow();
+  expect(() => getCardValue("11♠")).toThrow();
+  expect(() => getCardValue("A")).toThrow();
+  expect(() => getCardValue("♠")).toThrow();
+  expect(() => getCardValue("KH")).toThrow();
+  expect(() => getCardValue("")).toThrow();
+});