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Original file line number Diff line number Diff line change
Expand Up @@ -8,12 +8,22 @@
// Then, write the next test! :) Go through this process until all the cases are implemented

function getAngleType(angle) {
if (angle === 90) {
if (angle === 90) {
return "Right angle";
} else if (angle < 90) {
return "Acute angle";
} else if (angle > 90 && angle < 180) {
return "Obtuse angle";
Comment on lines +15 to +16
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Both the else keyword and checking angle > 90 are optional.

Can you figure out why?

} else if (angle === 180) {
return "Straight angle";
} else if (angle > 180 && angle < 360) {
return "Reflex angle";
} else {
return "Invalid 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.
}

// 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.
Expand Down Expand Up @@ -50,14 +60,17 @@ 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,
const straight = getAngleType(180)
assertEquals (straight, "Straight angle");
// Then the function should return "Straight angle"
// ====> write your test here, and then add a line to pass the test in the function above


// 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
const reflex= getAngleType( 350);
assertEquals (reflex, "Reflex angle");
Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,10 @@

function isProperFraction(numerator, denominator) {
if (numerator < denominator) {
return true;
return true ;
}
else {
return false;
Comment on lines 11 to +15
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According to the definition of proper fraction in mathematics:

  • isProperFraction(-4, 3) should return false
  • isProperFraction(-2, 5) should return true
  • isProperFraction(-1, 1) should return false
  • isProperFraction(-2, -3) should return true

Can you look up the definition of proper fraction and update your function accordingly?

}
}

Expand Down Expand Up @@ -38,22 +41,29 @@ assertEquals(properFraction, true);
// 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);
const properFraction2 = isProperFraction(5, 2);
assertEquals(properFraction2, 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);
assertEquals(negativeFraction, true);
// ====> complete with your assertion

// 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 properFraction3 = isProperFraction(0, 6);
assertEquals(properFraction3,true)

const properFraction4 = isProperFraction(0, 1);
assertEquals(properFraction4, true);
Original file line number Diff line number Diff line change
Expand Up @@ -8,8 +8,15 @@
// 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) {
let rank = card.substring(0, card.length - 1);
if (rank === "A") {
return 11;
} else if (rank === "J" || rank === "Q" || rank === "K" || rank === "10") {
return 10;
} else if (rank >= "2" && rank <= "9") {
return parseInt(rank);
Comment on lines +16 to +17
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Does your function return the value or behave the way you expected from each of the following function calls?

getCardValue("20♠");
getCardValue("2.1♠");
getCardValue("0002♠");

} else {
throw new Error("Invalid card rank.");
}
}

Expand Down Expand Up @@ -39,19 +46,30 @@ assertEquals(aceofSpades, 11);
// When the function is called with such a card,
// Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
const fiveofHearts = getCardValue("5♥");
assertEquals(fiveofHearts, 5);
// ====> write your test here, and then add a line to pass the test in the function above

// 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 tenOfSpades = getCardValue("10♠");
assertEquals(tenOfSpades, 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 aceofHearts = getCardValue("A♠");
assertEquals(aceofSpades, 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 invalidCard = getCardValue("87");
assertEquals(invalidCard, "Invalid card rank");
Original file line number Diff line number Diff line change
Expand Up @@ -12,15 +12,34 @@ test("should identify right angle (90°)", () => {
// Case 2: Identify Acute Angles:
// When the angle is less than 90 degrees,
// Then the function should return "Acute angle"
//else if (angle < 90) {
//return "Acute angle";

test("returns Acute angle for values less than 90 degrees",() =>{
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("returns Obtuse angle for values greater than 90 degrees and less than 180 degrees",()=>{
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("returns Straight angle for 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("returns Reflex angle for angles > 180 && angle < 360",() =>{
expect(getAngleType(290)).toEqual("Reflex angle");
});
Comment on lines +26 to +45
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Indentation is not very consistent.

Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,28 @@ test("should return true for a proper fraction", () => {

// Case 2: Identify Improper Fractions:

test("it is a Improper Fraction",() =>{
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The test description is not quite informative; it does not describe what the function should return or behave when the input represents an improper fraction.

Ideally, the description should help a developer figure out how to implement a function to pass all the tests.

expect(isProperFraction(3, 2)).toEqual(false);
});

// Case 3: Identify Negative Fractions:
test("it is a Negative Fraction",() =>{
expect(isProperFraction(-2, 6)).toEqual(true);
});

// Case 4: Identify Equal Numerator and Denominator:

test("It is a equal numerator and denominador", () =>{
expect(isProperFraction( 2, 2)).toEqual(false);
});



// function isProperFraction(numerator, denominator) {
// if (numerator < denominator) {
// return true ;
// }
// else {
// return false;
// }
// }
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,24 @@ test("should return 11 for Ace of Spades", () => {
});

// Case 2: Handle Number Cards (2-10):

test("should return number cards", () => {
const fiveofHearts = getCardValue("5♥");
expect(fiveofHearts).toEqual(5);
});
Comment on lines +12 to +15
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Here's an example of how we can specify a test for number cards.

test("should return the value of number cards (2-10)", () => {
    expect(getCardValue("2♣︎")).toEqual(2);
    expect(getCardValue("5♠")).toEqual(5);
    expect(getCardValue("10♥")).toEqual(10);
    // Note: We could also use a loop to check all values from 2 to 10.
});

Note: We could test multiple samples within each test to make the test more comprehensive.


// Case 3: Handle Face Cards (J, Q, K):
test ("should return Face Cards J, Q, K ", () =>{
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What should the function return when the input represents a face card?

const jackOfClubs = getCardValue("J♣");
expect(jackOfClubs).toEqual(10);
});

// Case 4: Handle Ace (A):
test ("should return Ace", () =>{
const aceofHearts = getCardValue("A♥");
expect(aceofHearts).toEqual(11);
});
// Case 5: Handle Invalid Cards:
test("should throw 'Invalid card rank' for a rank of '1'", () => {
expect(() => getCardValue("1♦")).toThrow("Invalid card rank.");
});
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