Barcelon | Class-Oct2025-1 | Gbemisola Ikuegbuwa | Sprint-3| Structuring-and-Testing-Data #49

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Gbemisola-Fad wants to merge 71 commits into Migracode-Barcelona:main from Gbemisola-Fad:Sprint-3

Sprint-1/1-key-exercises/1-count.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -3,4 +3,4 @@ let count = 0; @@
     count = count + 1;
     // Line 1 is a variable declaration, creating the count variable with an initial value of 0
-    // Describe what line 3 is doing, in particular focus on what = is doing
+    // Describe what line 3 is doing, in particular focus on what = is doing

Sprint-1/1-key-exercises/2-initials.js

Original file line number	Diff line number	Diff line change
Expand Up		@@ -8,4 +8,3 @@ let lastName = "Johnson";
		let initials = ``;

		// https://www.google.com/search?q=get+first+character+of+string+mdn

Sprint-1/1-key-exercises/3-paths.js

            
                      Original file line number
                      Diff line number
                      Diff line change
                  
    @@ -15,9 +15,13 @@ const base = filePath.slice(lastSlashIndex + 1);
  
    console.log(`The base part of ${filePath} is ${base}`);

    // Create a variable to store the dir part of the filePath variable

    const dir = filePath.slice(0, lastSlashIndex);

    // Create a variable to store the ext part of the variable

    const extIndex = base.lastIndexOf(".");

    const ext = base.slice(extIndex + 1);

    const dir = ;

    const ext = ;

    console.log(`The directory part is ${dir}`);

    console.log(`The extension part is ${ext}`);

    // https://www.google.com/search?q=slice+mdn

Sprint-1/1-key-exercises/4-random.js

-Original file line number
+Diff line change
@@ Expand Up @@
     // In this exercise, you will need to work out what num represents?
     // Try breaking down the expression and using documentation to explain what it means
     // It will help to think about the order in which expressions are evaluated
-    // Try logging the value of num and running the program several times to build an idea of what the program is doing
+    // Try logging the value of num and running the program several times to build an idea of what the program is doing

Sprint-1/2-mandatory-errors/0.js

-Original file line number
+Diff line change
@@ -1,2 +1,2 @@
     This is just an instruction for the first activity - but it is just for human consumption
-    We don't want the computer to run these 2 lines - how can we solve this problem?
+    We don't want the computer to run these 2 lines - how can we solve this problem?

Sprint-1/2-mandatory-errors/1.js

-Original file line number
+Diff line change
@@ -1,4 +1,4 @@
     // trying to create an age variable and then reassign the value by 1
     const age = 33;
-    age = age + 1;
+    age = age + 1;

Sprint-1/2-mandatory-errors/2.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -2,4 +2,4 @@ @@
     // what's the error ?
     console.log(`I was born in ${cityOfBirth}`);
-    const cityOfBirth = "Bolton";
+    const cityOfBirth = "Bolton";

Sprint-1/2-mandatory-errors/3.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -6,4 +6,4 @@ const last4Digits = cardNumber.slice(-4); @@
     // Before running the code, make and explain a prediction about why the code won't work
     // Then run the code and see what error it gives.
     // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
-    // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+    // Then try updating the expression last4Digits is assigned to, in order to get the correct value

Sprint-1/2-mandatory-errors/4.js

            
                      Original file line number
                      Diff line number
                      Diff line change
                  
    @@ -1,2 +1,2 @@
  
    const 12HourClockTime = "20:53";

    const 24hourClockTime = "08:53";
      
    const hour12ClockTime = "20:53";  // Changed to start with a letter

    const hour24ClockTime = "08:53";  // Also changed for consistency

Sprint-1/3-mandatory-interpret/1-percentage-change.js

-Original file line number
+Diff line change
@@ -1,22 +1,2 @@
-    let carPrice = "10,000";
-    let priceAfterOneYear = "8,543";
-    carPrice = Number(carPrice.replaceAll(",", ""));
-    priceAfterOneYear = Number(priceAfterOneYear.replaceAll("," ""));
-    const priceDifference = carPrice - priceAfterOneYear;
-    const percentageChange = (priceDifference / carPrice) * 100;
-    console.log(`The percentage change is ${percentageChange}`);
-    // Read the code and then answer the questions below
-    // a) How many function calls are there in this file? Write down all the lines where a function call is made
-    // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem?
-    // c) Identify all the lines that are variable reassignment statements
-    // d) Identify all the lines that are variable declarations
-    // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression?
+    // This is just an instruction for the first activity - but it is just for human consumption
+    // We don't want the computer to run these 2 lines

Sprint-1/3-mandatory-interpret/2-time-format.js

Original file line number	Diff line number	Diff line change
Expand Up		@@ -22,4 +22,4 @@ console.log(result);

		// e) What do you think the variable result represents? Can you think of a better name for this variable?

		// f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer
		// f) Try experimenting with different values of movieLength. Will this code work for all values of movieLength? Explain your answer

Sprint-1/3-mandatory-interpret/3-to-pounds.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -24,4 +24,18 @@ console.log(`£${pounds}.${pence}`); @@
     // Try and describe the purpose / rationale behind each step
     // To begin, we can start with
-    // 1. const penceString = "399p": initialises a string variable with the value "399p"
+    // 1. const penceString = "399p": initialize a string variable with the value "399p"
+    // 3. const penceStringWithoutTrailingP = penceString.substring(0, penceString.length -1);
+    // cleaning the trailing P character. it uses the string´s length minus 1 as the end index for substring(), this leave only the numeric value while drop the last character.
+    // 8. const paddedPenceNumberString = penceStringWithoutTrailingP.padStar(3, "0"); Padding- ensure the numeric string is at least three characters long by prepending zeros.
+    // this is important for separating pounds from pence especially when values is less than 100p
+    // 9. const pounds = paddedPenceNumberString.substring(0, paddedPenceNumberString.length - 2); Extracting pounds component, this uses substring()
+    // to take all character from the start (index 0) up to, but not including the last two characters, they are always pence.
+    // 14. const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0"); Extracting and formatting price-
+    // Extracts the pence component (the last two digits) and ensures they are always two digits long by padding the end with a zero if needed (though not needed for "99").
+    // 18. console.log(\£${pounds}.${pence}`);` Output: Format the extracted components into the standard currency display £3.99.

Sprint-1/4-stretch-explore/chrome.md

-Original file line number
+Diff line change
@@ Expand Up / @@ -15,4 +15,4 @@ What effect does calling the `alert` function have? @@
     Now try invoking the function `prompt` with a string input of `"What is your name?"` - store the return value of your call to `prompt` in an variable called `myName`.
     What effect does calling the `prompt` function have?
-    What is the return value of `prompt`?
+    What is the return value of `prompt`?

Sprint-1/4-stretch-explore/objects.md

-Original file line number
+Diff line change
@@ Expand Up / @@ -13,4 +13,4 @@ Try also entering `typeof console` @@
     Answer the following questions:
     What does `console` store?
-    What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?
+    What does the syntax `console.log` or `console.assert` mean? In particular, what does the `.` mean?

Sprint-2/1-key-errors/0.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -10,4 +10,4 @@ function capitalise(str) { @@
     }
     // =============> write your explanation here
-    // =============> write your new code here
+    // =============> write your new code here

Sprint-2/1-key-errors/1.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -17,4 +17,4 @@ console.log(decimalNumber); @@
     // =============> write your explanation here
     // Finally, correct the code to fix the problem
-    // =============> write your new code here
+    // =============> write your new code here

Sprint-2/1-key-errors/2.js

            
                      Original file line number
                      Diff line number
                      Diff line change
                  
    @@ -1,20 +1,14 @@
  
    // Predict and explain first...

    // Predict and explain first BEFORE you run any code...

    // =============> write your prediction here

    // this function should square any number but instead we're going to get an error

    // =============> write your prediction of the error here

    function square(3) {

        return num * num;

    function multiply(a, b) {

      console.log(a * b);

    }

    // =============> write the error message here

    console.log(`The result of multiplying 10 and 32 is ${multiply(10, 32)}`);

    // =============> explain this error message here

    // =============> write your explanation here

    // Finally, correct the code to fix the problem

    // =============> write your new code here

    //  =============> write your new code here

Sprint-2/2-mandatory-debug/1.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -10,4 +10,4 @@ console.log(`The sum of 10 and 32 is ${sum(10, 32)}`); @@
     // =============> write your explanation here
     // Finally, correct the code to fix the problem
-    //  =============> write your new code here
+    //  =============> write your new code here

Sprint-2/2-mandatory-debug/2.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -21,4 +21,4 @@ console.log(`The last digit of 806 is ${getLastDigit(806)}`); @@
     // =============> write your new code here
     // This program should tell the user the last digit of each number.
-    // Explain why getLastDigit is not working properly - correct the problem
+    // Explain why getLastDigit is not working properly - correct the problem

Sprint-2/3-mandatory-implement/1-bmi.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -6,7 +6,7 @@ @@
     // squaring your height: 1.73 x 1.73 = 2.99
     // dividing 70 by 2.99 = 23.41
-    // Your result will be displayed to 1 decimal place, for example 23.4.
+    // Your result will be displayed to 1 decimal place, for example 23.4
     // You will need to implement a function that calculates the BMI of someone based off their weight and height
@@ Expand All / @@ -15,5 +15,5 @@ @@
     // It should return their Body Mass Index to 1 decimal place
     function calculateBMI(weight, height) {
-        // return the BMI of someone based off their weight and height
+    // return the BMI of someone based off their weight and height
     }

Sprint-2/3-mandatory-implement/2-cases.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -13,4 +13,4 @@ @@
     // You will need to come up with an appropriate name for the function
     // Use the MDN string documentation to help you find a solution
-    // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase
+    // This might help https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase

Sprint-2/3-mandatory-implement/3-to-pounds.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -3,4 +3,4 @@ @@
     // You will need to take this code and turn it into a reusable block of code.
     // You will need to declare a function called toPounds with an appropriately named parameter.
-    // You should call this function a number of times to check it works for different inputs
+    // You should call this function a number of times to check it works for different inputs

Sprint-2/4-mandatory-interpret/time-format.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -11,7 +11,7 @@ function formatTimeDisplay(seconds) { @@
       return `${pad(totalHours)}:${pad(remainingMinutes)}:${pad(remainingSeconds)}`;
     }
-    // You will need to play computer with this example - use the Python Visualiser https://pythontutor.com/visualize.html#mode=edit
+    // You will need to play computer with this example - use the Python Visualizer https://pythontutor.com/visualize.html#mode=edit
     // to help you answer these questions
     // Questions
@@ Expand All / @@ -31,4 +31,4 @@ function formatTimeDisplay(seconds) { @@
     // =============> write your answer here
     // e) What is the return value assigned to num when pad is called for the last time in this program?  Explain your answer
-    // =============> write your answer here
+    // =============> write your answer here

Sprint-2/5-stretch-extend/format-time.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -22,4 +22,4 @@ const targetOutput2 = "11:00 pm"; @@
     console.assert(
       currentOutput2 === targetOutput2,
       `current output: ${currentOutput2}, target output: ${targetOutput2}`
-    );
+    );

Sprint-3/1-key-implement/1-get-angle-type.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -8,8 +8,8 @@ @@
     // Then, write the next test! :) Go through this process until all the cases are implemented
     function getAngleType(angle) {
-       if (angle === 90) return "Right angle";
-       // read to the end, complete line 36, then pass your test here
+    if (angle === 90) return "Right angle";
+    // read to the end, complete line 36, then pass your test here
     }
     // we're going to use this helper function to make our assertions easier to read
@@ Expand Down Expand Up / @@ -53,4 +53,4 @@ const obtuse = getAngleType(120); @@
     // 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

Sprint-3/1-key-implement/2-is-proper-fraction.js

Original file line number	Diff line number	Diff line change
Expand Up		@@ -51,3 +51,5 @@ const equalFraction = isProperFraction(3, 3);

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

Sprint-3/1-key-implement/3-get-card-value.js

Original file line number	Diff line number	Diff line change
Expand Up		@@ -49,3 +49,5 @@ const fiveofHearts = getCardValue("5♥");
		// 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."

Sprint-3/2-mandatory-rewrite/1-get-angle-type.js

-Original file line number
+Diff line change
@@ -1,18 +1,26 @@
     function getAngleType(angle) {
       if (angle === 90) return "Right angle";
-      // replace with your completed function from key-implement
+      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";
     }
+    // Don't get bogged down in this detail
+    // Jest uses Common JS module syntax by default as it's quite old
+    // We will upgrade our approach to ES6 modules in the next course module, so for now
+    // we have just written the CommonJS module.exports syntax for you
+    module.exports = getAngleType;
+      // replace with your completed function from key-implement
+    }
     // Don't get bogged down in this detail
     // Jest uses CommonJS module syntax by default as it's quite old
     // We will upgrade our approach to ES6 modules in the next course module, so for now
     // we have just written the CommonJS module.exports syntax for you
-    module.exports = getAngleType;
+    module.exports = getAngleType;

Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -10,15 +10,33 @@ 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"
+    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");
+    });

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js

-Original file line number
+Diff line change
@@ -1,6 +1,11 @@
     function isProperFraction(numerator, denominator) {
         if (numerator < denominator) return true;
         // add your completed function from key-implement here
+        if (numerator > denominator) return false;
+        if (numerator <= 0 || denominator <= 0) return false;
+        if (numerator === denominator) return false;
+        return false;
     }
-    module.exports = isProperFraction;
+    module.exports = isProperFraction;

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js

-Original file line number
+Diff line change
@@ Expand Up / @@ -4,8 +4,20 @@ test("should return true for a proper fraction", () => { @@
       expect(isProperFraction(2, 3)).toEqual(true);
     });
-    // Case 2: Identify Improper Fractions:
+    // Case 2: Identify Improper Fractions:
+    test("should return false for an improper fraction", () => {
+      expect(isProperFraction(5, 4)).toEqual(false);
+    });
     // Case 3: Identify Negative Fractions:
+    test("should return false for a negative fraction", () => {
+      expect(isProperFraction(-2, 3)).toEqual(true);
+    });
     // Case 4: Identify Equal Numerator and Denominator:
+    test("should return false when numerator equals denominator", () => {
+      expect(isProperFraction(4, 4)).toEqual(false);
+    });

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