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Original file line number Diff line number Diff line change
Expand Up @@ -11,8 +11,22 @@ function getAngleType(angle) {
if (angle === 90) {
return "Right angle";
}
// Run the tests, work out what Case 2 is testing, and implement the required code here.
// Then keep going for the other cases, one at a time.

if (angle < 90) {
return "Acute angle";
}

if (angle > 90 && angle < 180) {
return "Obtuse angle";
}

if (angle === 180) {
return "Straight angle";
}

if (angle > 180 && angle < 360) {
return "Reflex angle";
}
}

// The line below allows us to load the getAngleType function into tests in other files.
Expand Down Expand Up @@ -50,14 +64,20 @@ assertEquals(acute, "Acute angle");
// When the angle is greater than 90 degrees and less than 180 degrees,
// Then the function should return "Obtuse angle"
const obtuse = getAngleType(120);

// ====> write your test here, and then add a line to pass the test in the function above
assertEquals(obtuse, "Obtuse angle");

// Case 4: Identify Straight Angles:
// When the angle is exactly 180 degrees,
// Then the function should return "Straight angle"
// ====> write your test here, and then add a line to pass the test in the function above
const straight = getAngleType(180);
assertEquals(straight, "Straight angle");

// Case 5: Identify Reflex Angles:
// When the angle is greater than 180 degrees and less than 360 degrees,
// Then the function should return "Reflex angle"
// ====> write your test here, and then add a line to pass the test in the function above
// ====> write your test here, and then add a line to pass the test in the function above
const reflex = getAngleType(270);
assertEquals(reflex, "Reflex angle");
Original file line number Diff line number Diff line change
Expand Up @@ -8,9 +8,12 @@
// write one test at a time, and make it pass, build your solution up methodically

function isProperFraction(numerator, denominator) {
if (numerator < denominator) {
if (Math.abs(numerator) < Math.abs(denominator)) {
return true;
}
else if (numerator >= denominator) {
return false;
}
}

// The line below allows us to load the isProperFraction function into tests in other files.
Expand All @@ -31,29 +34,38 @@ function assertEquals(actualOutput, targetOutput) {
// Input: numerator = 2, denominator = 3
// target output: true
// Explanation: The fraction 2/3 is a proper fraction, where the numerator is less than the denominator. The function should return true.

const properFraction = isProperFraction(2, 3);
assertEquals(properFraction, true);

// Improper Fraction check:
// Input: numerator = 5, denominator = 2
// target output: false
// Explanation: The fraction 5/2 is an improper fraction, where the numerator is greater than or equal to the denominator. The function should return false.


const improperFraction = isProperFraction(5, 2);
assertEquals(improperFraction, false);

// Negative Fraction check:
// Input: numerator = -4, denominator = 7
// target output: true
// Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.


const negativeFraction = isProperFraction(-4, 7);
// ====> complete with your assertion
assertEquals(negativeFraction, true);

// Equal Numerator and Denominator check:
// Input: numerator = 3, denominator = 3
// 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.

const equalFraction = isProperFraction(3, 3);
// ====> complete with your assertion
assertEquals(equalFraction, false);

// Stretch:
// What other scenarios could you test for?

const invalidFraction = isProperFraction(0, 5);
assertEquals(invalidFraction, true);
Original file line number Diff line number Diff line change
Expand Up @@ -8,11 +8,21 @@
// write one test at a time, and make it pass, build your solution up methodically
// just make one change at a time -- don't rush -- programmers are deep and careful thinkers
function getCardValue(card) {
const rank = card.slice(0, -1);

if (rank === "A") {
return 11;
}
else if (["2","3","4","5","6","7","8","9"].includes(rank)) {
return Number(rank);
}
else if (rank === "10" || rank === "J" || rank === "Q" || rank === "K") {
return 10;
}
else {
throw new Error("Invalid card 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;
Expand Down Expand Up @@ -40,18 +50,32 @@ assertEquals(aceofSpades, 11);
// Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
const fiveofHearts = getCardValue("5♥");
// ====> write your test here, and then add a line to pass the test in the function above

assertEquals(fiveofHearts, 5);
// Handle Face Cards (J, Q, K):
// Given a card with a rank of "10," "J," "Q," or "K",
// When the function is called with such a card,
// Then it should return the value 10, as these cards are worth 10 points each in blackjack.
const tenofDiamonds = getCardValue("10♦");
const jackofClubs = getCardValue("J♣");
const queenofHearts = getCardValue("Q♥");
const kingofSpades = getCardValue("K♠");

assertEquals(tenofDiamonds, 10);
assertEquals(jackofClubs, 10);
assertEquals(queenofHearts, 10);
assertEquals(kingofSpades, 10);
// Handle Ace (A):
// Given a card with a rank of "A",
// When the function is called with an Ace,
// Then it should, by default, assume the Ace is worth 11 points, which is a common rule in blackjack.

const aceofDiamonds = getCardValue("A♦");
assertEquals(aceofDiamonds, 11);
// Handle Invalid Cards:
// 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."
const invalidCard1 = () => getCardValue("1♠");
assertEquals(invalidCard1 instanceof Function, true);

const invalidCard2 = () => getCardValue("B♥");
assertEquals(invalidCard2 instanceof Function, true);
Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
// 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 { test } = require("picomatch");
const getAngleType = require("../implement/1-get-angle-type");

test("should identify right angle (90°)", () => {
Expand All @@ -13,14 +14,30 @@ test("should identify right angle (90°)", () => {
// When the angle is less than 90 degrees,
// Then the function should return "Acute angle"

test("should identify acute angle (<90°)", () => {
expect(getAngleType(45)).toEqual("Acute angle");
})

// Case 3: Identify Obtuse Angles:
// When the angle is greater than 90 degrees and less than 180 degrees,
// Then the function should return "Obtuse angle"

test("should identify obtuse angle (>90° and <180°)", () => {
expect(getAngleType(120)).toEqual("Obtuse angle");
})

// Case 4: Identify Straight Angles:
// When the angle is exactly 180 degrees,
// Then the function should return "Straight angle"

test("should identify straight angle (180°)", () => {
expect(getAngleType(180)).toEqual("Straight angle");
})

// Case 5: Identify Reflex Angles:
// When the angle is greater than 180 degrees and less than 360 degrees,
// Then the function should return "Reflex angle"

test("should identify reflex angle (>180° and <360°)", () => {
expect(getAngleType(270)).toEqual("Reflex angle");
})
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,22 @@ test("should return true for a proper fraction", () => {
});

// Case 2: Identify Improper Fractions:
test("should return false for an improper fraction", () =>{
expect(isProperFraction(5, 2)).toEqual(false);
});

// Case 3: Identify Negative Fractions:
test("should return true for negative proper fraction", () => (
expect(isProperFraction(-4,7)).toEqual(true)
));

// Case 4: Identify Equal Numerator and Denominator:
test("should return false when numerator equals denominator", () => {
expect(isProperFraction(3,3)).toEqual(false);
});

// Stretch:
// What other scenarios could you test for?
test("should return true for negative proper fraction with negative denominator", () => {
expect(isProperFraction(4,-7)).toEqual(true);
});
Comment on lines +10 to +28
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What are your expected range of numerators and denominators?

If you test all possible combinations of positive/negative numerator and denominator, you may discover a bug in your implementation.

Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
// 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 { test } = require("picomatch");
const getCardValue = require("../implement/3-get-card-value");

test("should return 11 for Ace of Spades", () => {
Expand All @@ -8,6 +9,27 @@ test("should return 11 for Ace of Spades", () => {
});

// Case 2: Handle Number Cards (2-10):
test("should return numeric value for number cards (2-10)", () => {
const fiveofHearts = getCardValue("5♥");
expect(fiveofHearts).toEqual(5);
});
// Case 3: Handle Face Cards (J, Q, K):
test("should return 10 for face cards (J, Q, K) and 10", () => {
expect(getCardValue("10♦")).toEqual(10);
Comment on lines +12 to +18
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  • 2 and 10 are good boundary cases to test.
  • 10 is normally considered a number card.

expect(getCardValue("J♣")).toEqual(10);
expect(getCardValue("Q♥")).toEqual(10);
expect(getCardValue("K♠")).toEqual(10);
});
// Case 4: Handle Ace (A):
test("should return 11 for Ace (A)", () => {
expect(getCardValue("A♦")).toEqual(11);
});
Comment on lines +24 to +26
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This test and the test on lines 7-9 are quite similar.

// Case 5: Handle Invalid Cards:
test("should throw an error for invalid card rank", () => {
expect(() => {
getCardValue("1♠");
}).toThrow("Invalid card rank.");
expect(() => {
getCardValue("B♥");
}).toThrow("Invalid card rank.");
});
Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<coverage generated="1763210812403" clover="3.2.0">
<project timestamp="1763210812404" name="All files">
<metrics statements="0" coveredstatements="0" conditionals="0" coveredconditionals="0" methods="0" coveredmethods="0" elements="0" coveredelements="0" complexity="0" loc="0" ncloc="0" packages="0" files="0" classes="0"/>
</project>
</coverage>
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
{}
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