From 33d5bd191918249dd8944f9ada8d0fffd1731de7 Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 13:33:58 +0200
Subject: [PATCH 1/8] get angle type

---
 .../implement/1-get-angle-type.js             | 39 +++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
index 9e05a871e2..6556dc7820 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -35,3 +35,42 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+//
+
+function getAngleType(angle) {
+  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";
+  }
+}
+
+module.exports = getAngleType;
+
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+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(0), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");
+assertEquals(getAngleType(500), "Invalid angle");

From adac33b021f2fada4ece933d4bd59b47219304ef Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 13:38:24 +0200
Subject: [PATCH 2/8] add console log

---
 .../1-implement-and-rewrite-tests/implement/1-get-angle-type.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
index 6556dc7820..74daed60d3 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -74,3 +74,5 @@ assertEquals(getAngleType(0), "Invalid angle");
 assertEquals(getAngleType(-10), "Invalid angle");
 assertEquals(getAngleType(360), "Invalid angle");
 assertEquals(getAngleType(500), "Invalid angle");
+
+console.log("All tests passed!");

From 84a08d173f432d4f50323ae6088f7efbbe8a029f Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 14:10:23 +0200
Subject: [PATCH 3/8] implement

---
 .../implement/2-is-proper-fraction.js         | 45 +++++++++++++
 .../implement/3-get-card-value.js             | 65 +++++++++++++++++++
 2 files changed, 110 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
index 970cb9b641..cf07ea0c00 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
@@ -31,3 +31,48 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+//
+
+function isProperFraction(numerator, denominator) {
+  if (denominator === 0) {
+    return false;
+  }
+
+  return Math.abs(numerator) < Math.abs(denominator);
+}
+
+// Export for later testing
+module.exports = isProperFraction;
+
+// Helper function
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// TESTS
+
+// Proper fractions
+assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+
+// Not proper (equal)
+assertEquals(isProperFraction(5, 5), false);
+
+// Not proper (numerator bigger)
+assertEquals(isProperFraction(7, 4), false);
+
+// Zero numerator
+assertEquals(isProperFraction(0, 5), true);
+
+// Invalid denominator
+assertEquals(isProperFraction(1, 0), false);
+
+// Negative values
+assertEquals(isProperFraction(-1, 3), true);
+assertEquals(isProperFraction(-5, 2), false);
+
+console.log("✅ All tests passed");
diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
index ff5c532e1d..8243b87c52 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
@@ -52,3 +52,68 @@ try {
 }
 
 // What other invalid card cases can you think of?
+
+function getCardValue(card) {
+  const cardPattern = /^(A|[2-9]|10|J|Q|K)[♠♥♦♣]$/;
+
+  if (!cardPattern.test(card)) {
+    throw new Error("Invalid card");
+  }
+
+  const rank = card.slice(0, -1);
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (["J", "Q", "K"].includes(rank)) {
+    return 10;
+  }
+
+  return Number(rank);
+}
+
+module.exports = getCardValue;
+
+// Helper
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("10♦"), 10);
+
+assertEquals(getCardValue("A♣"), 11);
+
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("K♥"), 10);
+
+// Invalid tests
+try {
+  getCardValue("invalid");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid text");
+}
+
+try {
+  getCardValue("1♠");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid rank");
+}
+
+try {
+  getCardValue("AX");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid suit");
+}
+
+console.log("🎉 Tests completed");

From cafc18f9776e3dda82b5171089aa8e69a958797c Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 14:16:15 +0200
Subject: [PATCH 4/8] test case 1

---
 .../1-get-angle-type.test.js                  | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
index d777f348d3..3743b0f87c 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
@@ -18,3 +18,45 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 // Case 4: Straight angle
 // Case 5: Reflex angles
 // Case 6: Invalid angles
+
+// This statement loads the getAngleType function you wrote in the implement directory.
+const getAngleType = require("../implement/1-get-angle-type");
+
+// Case 1: Acute angles
+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(120)).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(500)).toEqual("Invalid angle");
+});

From e4582085720b8cc1ffa5aa5c9766ff0967c21c63 Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 14:18:43 +0200
Subject: [PATCH 5/8] test case 2

---
 .../2-is-proper-fraction.test.js              | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
index 7f087b2ba1..85cbc09fb5 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
@@ -8,3 +8,38 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+//
+
+// This statement loads the isProperFraction function
+const isProperFraction = require("../implement/2-is-proper-fraction");
+
+// Case 1: denominator is zero
+test(`should return false when denominator is zero`, () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+// Case 2: numerator is zero
+test(`should return true when numerator is zero and denominator is non-zero`, () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Case 3: positive proper fractions
+test(`should return true for positive proper fractions`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(3, 4)).toEqual(true);
+});
+
+// Case 4: positive improper fractions
+test(`should return false when numerator is equal or greater`, () => {
+  expect(isProperFraction(5, 5)).toEqual(false);
+  expect(isProperFraction(7, 4)).toEqual(false);
+});
+
+// Case 5: negative fractions
+test(`should correctly handle negative values`, () => {
+  expect(isProperFraction(-1, 3)).toEqual(true);
+  expect(isProperFraction(-5, 2)).toEqual(false);
+  expect(isProperFraction(1, -3)).toEqual(true);
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});

From 6dbd3b5d6ad27dacc12e2d65ae7ed850a8d7aedf Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Thu, 25 Jun 2026 14:20:37 +0200
Subject: [PATCH 6/8] test case 3

---
 .../3-get-card-value.test.js                  | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
index cf7f9dae2e..f94aa5a144 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
@@ -18,3 +18,40 @@ test(`Should return 11 when given an ace card`, () => {
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+//
+
+// This statement loads the getCardValue function
+const getCardValue = require("../implement/3-get-card-value");
+
+// Case 1: Ace (A)
+test(`Should return 11 when given an ace card`, () => {
+  expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+});
+
+// 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("10♥")).toEqual(10);
+});
+
+// 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 error for invalid cards`, () => {
+  expect(() => getCardValue("invalid")).toThrow();
+
+  expect(() => getCardValue("1♠")).toThrow();
+
+  expect(() => getCardValue("11♥")).toThrow();
+
+  expect(() => getCardValue("AX")).toThrow();
+
+  expect(() => getCardValue("")).toThrow();
+});

From 5ee78d26b83b099ef424488731871b845b45837f Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Fri, 18 Sep 2026 12:39:13 +0200
Subject: [PATCH 7/8] sprint3 complete

---
 .../README.md                                 |  47 +++++++
 .../implement/1-get-angle-type.js             |  78 ++++++++++++
 .../implement/2-is-proper-fraction.js         |  78 ++++++++++++
 .../implement/3-get-card-value.js             | 119 ++++++++++++++++++
 .../1-get-angle-type.test.js                  |  62 +++++++++
 .../2-is-proper-fraction.test.js              |  45 +++++++
 .../3-get-card-value.test.js                  |  57 +++++++++
 .../testing-guide.md                          |  92 ++++++++++++++
 8 files changed, 578 insertions(+)
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/README.md
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md

diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md b/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md
new file mode 100644
index 0000000000..4658c9423a
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md	
@@ -0,0 +1,47 @@
+# Implement solutions and rewrite tests with Jest
+
+Before writing any code, please read the [Testing Function Guide](testing-guide.md) to learn how
+to choose test values that thoroughly test a function.
+
+## 1 Implement solutions
+
+In the `implement` directory you've got a number of functions you'll need to implement.
+For each function, you also have a number of different cases you'll need to check for your function.
+
+Write your implementation and your tests to cover the cases the function should fulfil.
+
+Here is a recommended order:
+
+1. `1-get-angle-type.js`
+2. `2-is-proper-fraction.js`
+3. `3-get-card-value.js`
+
+## 2 Rewrite tests with Jest
+
+`console.log` is most often used as a debugging tool. We use to inspect the state of our program during runtime.
+
+We can use `console.assert` to write assertions: however, it is not very easy to use when writing large test suites. In the first section, Implement, we used a custom "helper function" to make our assertions more readable.
+
+Jest is a whole library of helper functions we can use to make our assertions more readable and easier to write.
+
+Your new task is to write the same tests as you wrote in the `implement` directory, but using Jest instead of `console.assert`.
+
+You shouldn't have to change the contents of `implement` to write these tests.
+
+There are files for your Jest tests in the `rewrite-tests-with-jest` directory. They will automatically use the functions you already implemented.
+
+You can run all the tests in this repo by running `npm test` in your terminal. However, VSCode has a built-in test runner that you can use to run the tests, and this should make it much easier to focus on building up your test cases one at a time.
+
+https://code.visualstudio.com/docs/editor/testing
+
+1. Go to rewrite-tests-with-jest/1-get-angle-type.test.js
+2. Click the green play button to run the test. It's on the left of the test function in the gutter.
+3. Read the output in the TEST_RESULTS tab at the bottom of the screen.
+4. Explore all the tests in this repo by opening the TEST EXPLORER tab. The logo is a beaker.
+
+![VSCode Test Runner](../../run-this-test.png)
+
+![Test Results](../../test-results-output.png)
+
+> [!TIP]
+> You can always run a single test file by running `npm test path/to/test-file.test.js`.
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js
new file mode 100644
index 0000000000..74daed60d3
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js	
@@ -0,0 +1,78 @@
+// 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
+}
+
+// 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
+const right = getAngleType(90);
+assertEquals(right, "Right angle");
+
+//
+
+function getAngleType(angle) {
+  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";
+  }
+}
+
+module.exports = getAngleType;
+
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+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(0), "Invalid angle");
+assertEquals(getAngleType(-10), "Invalid angle");
+assertEquals(getAngleType(360), "Invalid angle");
+assertEquals(getAngleType(500), "Invalid angle");
+
+console.log("All tests passed!");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js
new file mode 100644
index 0000000000..cf07ea0c00
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js	
@@ -0,0 +1,78 @@
+// 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
+}
+
+// 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}`
+  );
+}
+
+// TODO: Write tests to cover all cases.
+// What combinations of numerators and denominators should you test?
+
+// Example: 1/2 is a proper fraction
+assertEquals(isProperFraction(1, 2), true);
+
+//
+
+function isProperFraction(numerator, denominator) {
+  if (denominator === 0) {
+    return false;
+  }
+
+  return Math.abs(numerator) < Math.abs(denominator);
+}
+
+// Export for later testing
+module.exports = isProperFraction;
+
+// Helper function
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// TESTS
+
+// Proper fractions
+assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(3, 4), true);
+
+// Not proper (equal)
+assertEquals(isProperFraction(5, 5), false);
+
+// Not proper (numerator bigger)
+assertEquals(isProperFraction(7, 4), false);
+
+// Zero numerator
+assertEquals(isProperFraction(0, 5), true);
+
+// Invalid denominator
+assertEquals(isProperFraction(1, 0), false);
+
+// Negative values
+assertEquals(isProperFraction(-1, 3), true);
+assertEquals(isProperFraction(-5, 2), false);
+
+console.log("✅ All tests passed");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js
new file mode 100644
index 0000000000..8243b87c52
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js	
@@ -0,0 +1,119 @@
+// This problem involves playing cards: https://en.wikipedia.org/wiki/Standard_52-card_deck
+
+// Implement a function getCardValue, when given a string representing a playing card,
+// should return the numerical value of the card.
+
+// A valid card string will contain a rank followed by the suit.
+// The rank can be one of the following strings:
+//   "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"
+// The suit can be one of the following emojis:
+//   "♠", "♥", "♦", "♣"
+// For example: "A♠", "2♥", "10♥", "J♣", "Q♦", "K♦".
+
+// When the card is an ace ("A"), the function should return 11.
+// When the card is a face card ("J", "Q", "K"), the function should return 10.
+// When the card is a number card ("2" to "10"), the function should return its numeric value.
+
+// When the card string is invalid (not following the above format), the function should
+// throw an error.
+
+// 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 getCardValue(card) {
+  // TODO: Implement this function
+}
+
+// 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;
+
+// Helper functions to make our assertions easier to read.
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
+// Examples:
+assertEquals(getCardValue("9♠"), 9);
+
+// Handling invalid cards
+try {
+  getCardValue("invalid");
+
+  // This line will not be reached if an error is thrown as expected
+  console.error("Error was not thrown for invalid card 😢");
+} catch (e) {
+  console.log("Error thrown for invalid card 🎉");
+}
+
+// What other invalid card cases can you think of?
+
+function getCardValue(card) {
+  const cardPattern = /^(A|[2-9]|10|J|Q|K)[♠♥♦♣]$/;
+
+  if (!cardPattern.test(card)) {
+    throw new Error("Invalid card");
+  }
+
+  const rank = card.slice(0, -1);
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (["J", "Q", "K"].includes(rank)) {
+    return 10;
+  }
+
+  return Number(rank);
+}
+
+module.exports = getCardValue;
+
+// Helper
+function assertEquals(actualOutput, targetOutput) {
+  console.assert(
+    actualOutput === targetOutput,
+    `Expected ${actualOutput} to equal ${targetOutput}`
+  );
+}
+
+// Tests
+assertEquals(getCardValue("2♥"), 2);
+assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("10♦"), 10);
+
+assertEquals(getCardValue("A♣"), 11);
+
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♦"), 10);
+assertEquals(getCardValue("K♥"), 10);
+
+// Invalid tests
+try {
+  getCardValue("invalid");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid text");
+}
+
+try {
+  getCardValue("1♠");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid rank");
+}
+
+try {
+  getCardValue("AX");
+  console.error("❌ Failed");
+} catch {
+  console.log("✅ Invalid suit");
+}
+
+console.log("🎉 Tests completed");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js
new file mode 100644
index 0000000000..3743b0f87c
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js	
@@ -0,0 +1,62 @@
+// 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
+  expect(getAngleType(1)).toEqual("Acute angle");
+  expect(getAngleType(45)).toEqual("Acute angle");
+  expect(getAngleType(89)).toEqual("Acute angle");
+});
+
+// Case 2: Right angle
+// Case 3: Obtuse angles
+// Case 4: Straight angle
+// Case 5: Reflex angles
+// Case 6: Invalid angles
+
+// This statement loads the getAngleType function you wrote in the implement directory.
+const getAngleType = require("../implement/1-get-angle-type");
+
+// Case 1: Acute angles
+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(120)).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(500)).toEqual("Invalid angle");
+});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js
new file mode 100644
index 0000000000..85cbc09fb5
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js	
@@ -0,0 +1,45 @@
+// 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: numerator is zero
+test(`should return false when denominator is zero`, () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+//
+
+// This statement loads the isProperFraction function
+const isProperFraction = require("../implement/2-is-proper-fraction");
+
+// Case 1: denominator is zero
+test(`should return false when denominator is zero`, () => {
+  expect(isProperFraction(1, 0)).toEqual(false);
+});
+
+// Case 2: numerator is zero
+test(`should return true when numerator is zero and denominator is non-zero`, () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+// Case 3: positive proper fractions
+test(`should return true for positive proper fractions`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(3, 4)).toEqual(true);
+});
+
+// Case 4: positive improper fractions
+test(`should return false when numerator is equal or greater`, () => {
+  expect(isProperFraction(5, 5)).toEqual(false);
+  expect(isProperFraction(7, 4)).toEqual(false);
+});
+
+// Case 5: negative fractions
+test(`should correctly handle negative values`, () => {
+  expect(isProperFraction(-1, 3)).toEqual(true);
+  expect(isProperFraction(-5, 2)).toEqual(false);
+  expect(isProperFraction(1, -3)).toEqual(true);
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js
new file mode 100644
index 0000000000..f94aa5a144
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js	
@@ -0,0 +1,57 @@
+// 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`, () => {
+  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
+
+// 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
+
+//
+
+// This statement loads the getCardValue function
+const getCardValue = require("../implement/3-get-card-value");
+
+// Case 1: Ace (A)
+test(`Should return 11 when given an ace card`, () => {
+  expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+});
+
+// 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("10♥")).toEqual(10);
+});
+
+// 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 error for invalid cards`, () => {
+  expect(() => getCardValue("invalid")).toThrow();
+
+  expect(() => getCardValue("1♠")).toThrow();
+
+  expect(() => getCardValue("11♥")).toThrow();
+
+  expect(() => getCardValue("AX")).toThrow();
+
+  expect(() => getCardValue("")).toThrow();
+});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md b/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md
new file mode 100644
index 0000000000..917194e7a9
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md	
@@ -0,0 +1,92 @@
+# A Beginner's Guide to Testing Functions
+
+## 1. What Is a Function?
+
+```
+Input  ──▶  Function  ──▶  Output
+```
+
+A function
+- Takes **input** (via **arguments**)
+- Does some work
+- Produces **one output** (via a **return value**)
+ 
+Example:
+
+```
+sum(2, 3) → 5
+```
+
+Important idea: the same input should produce the same output.
+
+
+## 2. Testing Means Predicting
+
+Testing means: 
+> If I give this input, what output should I get?
+
+
+## 3. Choosing Good Test Values
+
+### Step 1: Determining the space of possible inputs
+Ask:
+- What type of value is expected?
+- What values make sense?
+  - If they are numbers:
+    - Are they integers or floating-point numbers?
+    - What is their range?
+  - If they are strings:
+    - What are their length and patterns?
+- What values would not make sense?
+
+### Step 2: Choosing Good Test Values 
+
+#### Normal Cases
+
+These confirm that the function works in normal use.
+
+- What does a typical, ordinary input look like?
+- Are there multiple ordinary groups of inputs? e.g. for an age checking function, maybe there are "adults" and "children" as expected ordinary groups of inputs.
+
+  
+#### Boundary Cases
+
+Test values exactly at, just inside, and just outside defined ranges. 
+These values are where logic breaks most often.
+
+#### Consider All Outcomes
+
+Every outcome must be reached by at least one test.
+
+- How many different results can this function produce?
+- Have I tested a value that leads to each one?
+
+#### Crossing the Edges and Invalid Values
+
+This tests how the function behaves when assumptions are violated.
+- What happens when input is outside of the expected range?
+- What happens when input is not of the expected type?
+- What happens when input is not in the expected format?
+
+## 4. How to Test
+
+### 1. Using `console.assert()`
+
+```javascript
+  // Report a failure only when the first argument is false
+  console.assert( sum(4, 6) === 10, "Expected 4 + 6 to equal 10" );
+```
+
+It is simpler than using `if-else` and requires no setup.
+  
+### 2. Jest Testing Framework
+
+```javascript
+  test("Should correctly return the sum of two positive numbers", () => {
+    expect( sum(4, 6) ).toEqual(10);
+    ... // Can test multiple samples 
+  });
+
+```
+
+Jest supports many useful functions for testing but requires additional setup.

From f1e2940b4535bdfd333a1753172abeb6a7647597 Mon Sep 17 00:00:00 2001
From: Liyema Mfengwana <67449042+solohuns@users.noreply.github.com>
Date: Fri, 18 Sep 2026 12:51:46 +0200
Subject: [PATCH 8/8] update

---
 .../README.md                                 |  47 -------
 .../implement/1-get-angle-type.js             |  78 ------------
 .../implement/2-is-proper-fraction.js         |  78 ------------
 .../implement/3-get-card-value.js             | 119 ------------------
 .../1-get-angle-type.test.js                  |  62 ---------
 .../2-is-proper-fraction.test.js              |  45 -------
 .../3-get-card-value.test.js                  |  57 ---------
 .../testing-guide.md                          |  92 --------------
 8 files changed, 578 deletions(-)
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/README.md
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js
 delete mode 100644 Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md

diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md b/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md
deleted file mode 100644
index 4658c9423a..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/README.md	
+++ /dev/null
@@ -1,47 +0,0 @@
-# Implement solutions and rewrite tests with Jest
-
-Before writing any code, please read the [Testing Function Guide](testing-guide.md) to learn how
-to choose test values that thoroughly test a function.
-
-## 1 Implement solutions
-
-In the `implement` directory you've got a number of functions you'll need to implement.
-For each function, you also have a number of different cases you'll need to check for your function.
-
-Write your implementation and your tests to cover the cases the function should fulfil.
-
-Here is a recommended order:
-
-1. `1-get-angle-type.js`
-2. `2-is-proper-fraction.js`
-3. `3-get-card-value.js`
-
-## 2 Rewrite tests with Jest
-
-`console.log` is most often used as a debugging tool. We use to inspect the state of our program during runtime.
-
-We can use `console.assert` to write assertions: however, it is not very easy to use when writing large test suites. In the first section, Implement, we used a custom "helper function" to make our assertions more readable.
-
-Jest is a whole library of helper functions we can use to make our assertions more readable and easier to write.
-
-Your new task is to write the same tests as you wrote in the `implement` directory, but using Jest instead of `console.assert`.
-
-You shouldn't have to change the contents of `implement` to write these tests.
-
-There are files for your Jest tests in the `rewrite-tests-with-jest` directory. They will automatically use the functions you already implemented.
-
-You can run all the tests in this repo by running `npm test` in your terminal. However, VSCode has a built-in test runner that you can use to run the tests, and this should make it much easier to focus on building up your test cases one at a time.
-
-https://code.visualstudio.com/docs/editor/testing
-
-1. Go to rewrite-tests-with-jest/1-get-angle-type.test.js
-2. Click the green play button to run the test. It's on the left of the test function in the gutter.
-3. Read the output in the TEST_RESULTS tab at the bottom of the screen.
-4. Explore all the tests in this repo by opening the TEST EXPLORER tab. The logo is a beaker.
-
-![VSCode Test Runner](../../run-this-test.png)
-
-![Test Results](../../test-results-output.png)
-
-> [!TIP]
-> You can always run a single test file by running `npm test path/to/test-file.test.js`.
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js
deleted file mode 100644
index 74daed60d3..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/1-get-angle-type.js	
+++ /dev/null
@@ -1,78 +0,0 @@
-// 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
-}
-
-// 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
-const right = getAngleType(90);
-assertEquals(right, "Right angle");
-
-//
-
-function getAngleType(angle) {
-  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";
-  }
-}
-
-module.exports = getAngleType;
-
-function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
-    `Expected ${actualOutput} to equal ${targetOutput}`
-  );
-}
-
-// Tests
-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(0), "Invalid angle");
-assertEquals(getAngleType(-10), "Invalid angle");
-assertEquals(getAngleType(360), "Invalid angle");
-assertEquals(getAngleType(500), "Invalid angle");
-
-console.log("All tests passed!");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js
deleted file mode 100644
index cf07ea0c00..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/2-is-proper-fraction.js	
+++ /dev/null
@@ -1,78 +0,0 @@
-// 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
-}
-
-// 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}`
-  );
-}
-
-// TODO: Write tests to cover all cases.
-// What combinations of numerators and denominators should you test?
-
-// Example: 1/2 is a proper fraction
-assertEquals(isProperFraction(1, 2), true);
-
-//
-
-function isProperFraction(numerator, denominator) {
-  if (denominator === 0) {
-    return false;
-  }
-
-  return Math.abs(numerator) < Math.abs(denominator);
-}
-
-// Export for later testing
-module.exports = isProperFraction;
-
-// Helper function
-function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
-    `Expected ${actualOutput} to equal ${targetOutput}`
-  );
-}
-
-// TESTS
-
-// Proper fractions
-assertEquals(isProperFraction(1, 2), true);
-assertEquals(isProperFraction(3, 4), true);
-
-// Not proper (equal)
-assertEquals(isProperFraction(5, 5), false);
-
-// Not proper (numerator bigger)
-assertEquals(isProperFraction(7, 4), false);
-
-// Zero numerator
-assertEquals(isProperFraction(0, 5), true);
-
-// Invalid denominator
-assertEquals(isProperFraction(1, 0), false);
-
-// Negative values
-assertEquals(isProperFraction(-1, 3), true);
-assertEquals(isProperFraction(-5, 2), false);
-
-console.log("✅ All tests passed");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js
deleted file mode 100644
index 8243b87c52..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/implement/3-get-card-value.js	
+++ /dev/null
@@ -1,119 +0,0 @@
-// This problem involves playing cards: https://en.wikipedia.org/wiki/Standard_52-card_deck
-
-// Implement a function getCardValue, when given a string representing a playing card,
-// should return the numerical value of the card.
-
-// A valid card string will contain a rank followed by the suit.
-// The rank can be one of the following strings:
-//   "A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"
-// The suit can be one of the following emojis:
-//   "♠", "♥", "♦", "♣"
-// For example: "A♠", "2♥", "10♥", "J♣", "Q♦", "K♦".
-
-// When the card is an ace ("A"), the function should return 11.
-// When the card is a face card ("J", "Q", "K"), the function should return 10.
-// When the card is a number card ("2" to "10"), the function should return its numeric value.
-
-// When the card string is invalid (not following the above format), the function should
-// throw an error.
-
-// 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 getCardValue(card) {
-  // TODO: Implement this function
-}
-
-// 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;
-
-// Helper functions to make our assertions easier to read.
-function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
-    `Expected ${actualOutput} to equal ${targetOutput}`
-  );
-}
-
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
-assertEquals(getCardValue("9♠"), 9);
-
-// Handling invalid cards
-try {
-  getCardValue("invalid");
-
-  // This line will not be reached if an error is thrown as expected
-  console.error("Error was not thrown for invalid card 😢");
-} catch (e) {
-  console.log("Error thrown for invalid card 🎉");
-}
-
-// What other invalid card cases can you think of?
-
-function getCardValue(card) {
-  const cardPattern = /^(A|[2-9]|10|J|Q|K)[♠♥♦♣]$/;
-
-  if (!cardPattern.test(card)) {
-    throw new Error("Invalid card");
-  }
-
-  const rank = card.slice(0, -1);
-
-  if (rank === "A") {
-    return 11;
-  }
-
-  if (["J", "Q", "K"].includes(rank)) {
-    return 10;
-  }
-
-  return Number(rank);
-}
-
-module.exports = getCardValue;
-
-// Helper
-function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
-    `Expected ${actualOutput} to equal ${targetOutput}`
-  );
-}
-
-// Tests
-assertEquals(getCardValue("2♥"), 2);
-assertEquals(getCardValue("9♠"), 9);
-assertEquals(getCardValue("10♦"), 10);
-
-assertEquals(getCardValue("A♣"), 11);
-
-assertEquals(getCardValue("J♣"), 10);
-assertEquals(getCardValue("Q♦"), 10);
-assertEquals(getCardValue("K♥"), 10);
-
-// Invalid tests
-try {
-  getCardValue("invalid");
-  console.error("❌ Failed");
-} catch {
-  console.log("✅ Invalid text");
-}
-
-try {
-  getCardValue("1♠");
-  console.error("❌ Failed");
-} catch {
-  console.log("✅ Invalid rank");
-}
-
-try {
-  getCardValue("AX");
-  console.error("❌ Failed");
-} catch {
-  console.log("✅ Invalid suit");
-}
-
-console.log("🎉 Tests completed");
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js
deleted file mode 100644
index 3743b0f87c..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/1-get-angle-type.test.js	
+++ /dev/null
@@ -1,62 +0,0 @@
-// 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
-  expect(getAngleType(1)).toEqual("Acute angle");
-  expect(getAngleType(45)).toEqual("Acute angle");
-  expect(getAngleType(89)).toEqual("Acute angle");
-});
-
-// Case 2: Right angle
-// Case 3: Obtuse angles
-// Case 4: Straight angle
-// Case 5: Reflex angles
-// Case 6: Invalid angles
-
-// This statement loads the getAngleType function you wrote in the implement directory.
-const getAngleType = require("../implement/1-get-angle-type");
-
-// Case 1: Acute angles
-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(120)).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(500)).toEqual("Invalid angle");
-});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js
deleted file mode 100644
index 85cbc09fb5..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/2-is-proper-fraction.test.js	
+++ /dev/null
@@ -1,45 +0,0 @@
-// 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: numerator is zero
-test(`should return false when denominator is zero`, () => {
-  expect(isProperFraction(1, 0)).toEqual(false);
-});
-
-//
-
-// This statement loads the isProperFraction function
-const isProperFraction = require("../implement/2-is-proper-fraction");
-
-// Case 1: denominator is zero
-test(`should return false when denominator is zero`, () => {
-  expect(isProperFraction(1, 0)).toEqual(false);
-});
-
-// Case 2: numerator is zero
-test(`should return true when numerator is zero and denominator is non-zero`, () => {
-  expect(isProperFraction(0, 5)).toEqual(true);
-});
-
-// Case 3: positive proper fractions
-test(`should return true for positive proper fractions`, () => {
-  expect(isProperFraction(1, 2)).toEqual(true);
-  expect(isProperFraction(3, 4)).toEqual(true);
-});
-
-// Case 4: positive improper fractions
-test(`should return false when numerator is equal or greater`, () => {
-  expect(isProperFraction(5, 5)).toEqual(false);
-  expect(isProperFraction(7, 4)).toEqual(false);
-});
-
-// Case 5: negative fractions
-test(`should correctly handle negative values`, () => {
-  expect(isProperFraction(-1, 3)).toEqual(true);
-  expect(isProperFraction(-5, 2)).toEqual(false);
-  expect(isProperFraction(1, -3)).toEqual(true);
-  expect(isProperFraction(-1, -2)).toEqual(true);
-});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js b/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js
deleted file mode 100644
index f94aa5a144..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/rewrite-tests-with-jest/3-get-card-value.test.js	
+++ /dev/null
@@ -1,57 +0,0 @@
-// 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`, () => {
-  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
-
-// 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
-
-//
-
-// This statement loads the getCardValue function
-const getCardValue = require("../implement/3-get-card-value");
-
-// Case 1: Ace (A)
-test(`Should return 11 when given an ace card`, () => {
-  expect(getCardValue("A♠")).toEqual(11);
-  expect(getCardValue("A♥")).toEqual(11);
-});
-
-// 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("10♥")).toEqual(10);
-});
-
-// 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 error for invalid cards`, () => {
-  expect(() => getCardValue("invalid")).toThrow();
-
-  expect(() => getCardValue("1♠")).toThrow();
-
-  expect(() => getCardValue("11♥")).toThrow();
-
-  expect(() => getCardValue("AX")).toThrow();
-
-  expect(() => getCardValue("")).toThrow();
-});
diff --git a/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md b/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md
deleted file mode 100644
index 917194e7a9..0000000000
--- a/Sprint-3/1-implement-and-rewrite-tests - Copy/testing-guide.md	
+++ /dev/null
@@ -1,92 +0,0 @@
-# A Beginner's Guide to Testing Functions
-
-## 1. What Is a Function?
-
-```
-Input  ──▶  Function  ──▶  Output
-```
-
-A function
-- Takes **input** (via **arguments**)
-- Does some work
-- Produces **one output** (via a **return value**)
- 
-Example:
-
-```
-sum(2, 3) → 5
-```
-
-Important idea: the same input should produce the same output.
-
-
-## 2. Testing Means Predicting
-
-Testing means: 
-> If I give this input, what output should I get?
-
-
-## 3. Choosing Good Test Values
-
-### Step 1: Determining the space of possible inputs
-Ask:
-- What type of value is expected?
-- What values make sense?
-  - If they are numbers:
-    - Are they integers or floating-point numbers?
-    - What is their range?
-  - If they are strings:
-    - What are their length and patterns?
-- What values would not make sense?
-
-### Step 2: Choosing Good Test Values 
-
-#### Normal Cases
-
-These confirm that the function works in normal use.
-
-- What does a typical, ordinary input look like?
-- Are there multiple ordinary groups of inputs? e.g. for an age checking function, maybe there are "adults" and "children" as expected ordinary groups of inputs.
-
-  
-#### Boundary Cases
-
-Test values exactly at, just inside, and just outside defined ranges. 
-These values are where logic breaks most often.
-
-#### Consider All Outcomes
-
-Every outcome must be reached by at least one test.
-
-- How many different results can this function produce?
-- Have I tested a value that leads to each one?
-
-#### Crossing the Edges and Invalid Values
-
-This tests how the function behaves when assumptions are violated.
-- What happens when input is outside of the expected range?
-- What happens when input is not of the expected type?
-- What happens when input is not in the expected format?
-
-## 4. How to Test
-
-### 1. Using `console.assert()`
-
-```javascript
-  // Report a failure only when the first argument is false
-  console.assert( sum(4, 6) === 10, "Expected 4 + 6 to equal 10" );
-```
-
-It is simpler than using `if-else` and requires no setup.
-  
-### 2. Jest Testing Framework
-
-```javascript
-  test("Should correctly return the sum of two positive numbers", () => {
-    expect( sum(4, 6) ).toEqual(10);
-    ... // Can test multiple samples 
-  });
-
-```
-
-Jest supports many useful functions for testing but requires additional setup.