From dcd2c292e17e769b6f9c8bdb46cec0fe605514a4 Mon Sep 17 00:00:00 2001
From: Daniel Wagner-Hall <dawagner@gmail.com>
Date: Tue, 2 Sep 2025 14:38:11 +0100
Subject: [PATCH] Rework sprint 3 assignments

Previously they were:
1. Very repetitive, having the trainees solve the same problem more
   than once which was confusing and not a great use of time.
2. Large. Reviewing the whole PR for the sprint took a long time, so was
   very daunting for reviewers, and led to review backlogs.
3. Hard to track who was doing the stretch, because it was maybe in the
   same PR or just maybe missing from the PR.

Instead:
1. Re-use their implementation for both sets of tests - this emphasises
   also that the point of the exercise is writing tests different ways.
2. Split off the practice-tdd and stretch into their own expected
   separate PRs.
3. Fix up a bunch of inconsistent formatting.
---
 .../1-implement-and-rewrite-tests/README.md   | 44 ++++++++++++
 .../implement}/1-get-angle-type.js            | 11 ++-
 .../implement}/2-is-proper-fraction.js        |  8 ++-
 .../implement}/3-get-card-value.js            |  8 ++-
 .../1-get-angle-type.test.js                  |  4 +-
 .../2-is-proper-fraction.test.js              |  4 +-
 .../3-get-card-value.test.js                  | 13 ++++
 .../2-mandatory-rewrite/1-get-angle-type.js   | 18 -----
 .../2-is-proper-fraction.js                   |  6 --
 .../2-mandatory-rewrite/3-get-card-value.js   |  5 --
 .../3-get-card-value.test.js                  | 11 ---
 Sprint-3/2-practice-tdd/README.md             | 13 ++++
 .../implement => 2-practice-tdd}/count.js     |  4 +-
 .../count.test.js                             |  0
 Sprint-3/2-practice-tdd/get-ordinal-number.js |  5 ++
 .../get-ordinal-number.test.js                |  4 +-
 Sprint-3/2-practice-tdd/repeat.js             |  5 ++
 .../repeat.test.js                            | 10 +--
 .../implement/get-ordinal-number.js           |  5 --
 .../3-mandatory-practice/implement/repeat.js  |  5 --
 Sprint-3/3-stretch/README.md                  |  9 +++
 .../card-validator.md                         |  0
 .../find.js                                   |  0
 .../password-validator.js                     |  0
 .../password-validator.test.js                |  0
 Sprint-3/readme.md                            | 67 ++-----------------
 26 files changed, 132 insertions(+), 127 deletions(-)
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests/README.md
 rename Sprint-3/{1-key-implement => 1-implement-and-rewrite-tests/implement}/1-get-angle-type.js (84%)
 rename Sprint-3/{1-key-implement => 1-implement-and-rewrite-tests/implement}/2-is-proper-fraction.js (89%)
 rename Sprint-3/{1-key-implement => 1-implement-and-rewrite-tests/implement}/3-get-card-value.js (91%)
 rename Sprint-3/{2-mandatory-rewrite => 1-implement-and-rewrite-tests/rewrite-tests-with-jest}/1-get-angle-type.test.js (77%)
 rename Sprint-3/{2-mandatory-rewrite => 1-implement-and-rewrite-tests/rewrite-tests-with-jest}/2-is-proper-fraction.test.js (50%)
 create mode 100644 Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
 delete mode 100644 Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
 delete mode 100644 Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
 delete mode 100644 Sprint-3/2-mandatory-rewrite/3-get-card-value.js
 delete mode 100644 Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
 create mode 100644 Sprint-3/2-practice-tdd/README.md
 rename Sprint-3/{3-mandatory-practice/implement => 2-practice-tdd}/count.js (59%)
 rename Sprint-3/{3-mandatory-practice/implement => 2-practice-tdd}/count.test.js (100%)
 create mode 100644 Sprint-3/2-practice-tdd/get-ordinal-number.js
 rename Sprint-3/{3-mandatory-practice/implement => 2-practice-tdd}/get-ordinal-number.test.js (88%)
 create mode 100644 Sprint-3/2-practice-tdd/repeat.js
 rename Sprint-3/{3-mandatory-practice/implement => 2-practice-tdd}/repeat.test.js (89%)
 delete mode 100644 Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
 delete mode 100644 Sprint-3/3-mandatory-practice/implement/repeat.js
 create mode 100644 Sprint-3/3-stretch/README.md
 rename Sprint-3/{4-stretch-investigate => 3-stretch}/card-validator.md (100%)
 rename Sprint-3/{4-stretch-investigate => 3-stretch}/find.js (100%)
 rename Sprint-3/{4-stretch-investigate => 3-stretch}/password-validator.js (100%)
 rename Sprint-3/{4-stretch-investigate => 3-stretch}/password-validator.test.js (100%)

diff --git a/Sprint-3/1-implement-and-rewrite-tests/README.md b/Sprint-3/1-implement-and-rewrite-tests/README.md
new file mode 100644
index 000000000..18800d8f8
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests/README.md
@@ -0,0 +1,44 @@
+# Implement solutions and rewrite tests with Jest
+
+## 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 assertions and build up your program case by case. Don't rush to a solution. The point of these assignments is to learn how to write assertions and build up a program step by step.
+
+Here is a recommended order:
+
+1. `1-get-angle-type.js`
+1. `2-is-proper-fraction.js`
+1. `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
+1. Click the green play button to run the test. It's on the left of the test function in the gutter.
+1. Read the output in the TEST_RESULTS tab at the bottom of the screen.
+1. 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-key-implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
similarity index 84%
rename from Sprint-3/1-key-implement/1-get-angle-type.js
rename to Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
index 08d1f0cba..ca1dfe7f2 100644
--- a/Sprint-3/1-key-implement/1-get-angle-type.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -8,10 +8,17 @@
 // 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";
+  }
+   // 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.
+module.exports = getAngleType;
+
 // we're going to use this helper function to make our assertions easier to read
 // if the actual output matches the target output, the test will pass
 function assertEquals(actualOutput, targetOutput) {
diff --git a/Sprint-3/1-key-implement/2-is-proper-fraction.js b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
similarity index 89%
rename from Sprint-3/1-key-implement/2-is-proper-fraction.js
rename to Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
index 91583e941..a4739af77 100644
--- a/Sprint-3/1-key-implement/2-is-proper-fraction.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
@@ -8,9 +8,15 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+  if (numerator < denominator) {
+    return true;
+  }
 }
 
+// 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(
diff --git a/Sprint-3/1-key-implement/3-get-card-value.js b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
similarity index 91%
rename from Sprint-3/1-key-implement/3-get-card-value.js
rename to Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
index aa1cc9f90..266525d1b 100644
--- a/Sprint-3/1-key-implement/3-get-card-value.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
@@ -8,9 +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) {
-    if (rank === "A") return 11;
+  if (rank === "A") {
+    return 11;
+  }
 }
 
+// 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;
+
 // You need to write assertions for your function to check it works in different cases
 // we're going to use this helper function to make our assertions easier to read
 // if the actual output matches the target output, the test will pass
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
similarity index 77%
rename from Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
rename to Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
index b62827b7c..4a92a3e82 100644
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
@@ -1,4 +1,6 @@
-const getAngleType = require("./1-get-angle-type");
+// 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");
 
 test("should identify right angle (90°)", () => {
   expect(getAngleType(90)).toEqual("Right angle");
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
similarity index 50%
rename from Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
rename to Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
index ff1cc8173..caf08d15b 100644
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
@@ -1,4 +1,6 @@
-const isProperFraction = require("./2-is-proper-fraction");
+// 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");
 
 test("should return true for a proper fraction", () => {
   expect(isProperFraction(2, 3)).toEqual(true);
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
new file mode 100644
index 000000000..04418ff72
--- /dev/null
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
@@ -0,0 +1,13 @@
+// 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");
+
+test("should return 11 for Ace of Spades", () => {
+  const aceofSpades = getCardValue("A♠");
+  expect(aceofSpades).toEqual(11);
+});
+
+// Case 2: Handle Number Cards (2-10):
+// Case 3: Handle Face Cards (J, Q, K):
+// Case 4: Handle Ace (A):
+// Case 5: Handle Invalid Cards:
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
deleted file mode 100644
index d61254bd7..000000000
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
+++ /dev/null
@@ -1,18 +0,0 @@
-function getAngleType(angle) {
-  if (angle === 90) return "Right angle";
-  // 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;
\ No newline at end of file
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
deleted file mode 100644
index 9836fe398..000000000
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
+++ /dev/null
@@ -1,6 +0,0 @@
-function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
-}
-
-module.exports = isProperFraction;
\ No newline at end of file
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
deleted file mode 100644
index 0d95d3736..000000000
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
+++ /dev/null
@@ -1,5 +0,0 @@
-function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
-}
-module.exports = getCardValue;
\ No newline at end of file
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
deleted file mode 100644
index 03a8e2f34..000000000
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
+++ /dev/null
@@ -1,11 +0,0 @@
-const getCardValue = require("./3-get-card-value");
-
-test("should return 11 for Ace of Spades", () => {
-    const aceofSpades = getCardValue("A♠");
-    expect(aceofSpades).toEqual(11);
-    });
-
-// Case 2: Handle Number Cards (2-10):
-// Case 3: Handle Face Cards (J, Q, K):
-// Case 4: Handle Ace (A):
-// Case 5: Handle Invalid Cards:
diff --git a/Sprint-3/2-practice-tdd/README.md b/Sprint-3/2-practice-tdd/README.md
new file mode 100644
index 000000000..ff28c131c
--- /dev/null
+++ b/Sprint-3/2-practice-tdd/README.md
@@ -0,0 +1,13 @@
+# Practice TDD
+
+In this section you'll practice this key skill of building up your program test first.
+
+Use the Jest syntax and complete the provided files, meeting the acceptance criteria for each function. Use the VSCode test runner to run your tests and check your progress.
+
+Write the tests _before_ the code that will make them pass.
+
+Recommended order:
+
+1. `count.test.js`
+1. `repeat.test.js`
+1. `get-ordinal-number.test.js`
diff --git a/Sprint-3/3-mandatory-practice/implement/count.js b/Sprint-3/2-practice-tdd/count.js
similarity index 59%
rename from Sprint-3/3-mandatory-practice/implement/count.js
rename to Sprint-3/2-practice-tdd/count.js
index fce249650..95b6ebb7d 100644
--- a/Sprint-3/3-mandatory-practice/implement/count.js
+++ b/Sprint-3/2-practice-tdd/count.js
@@ -1,5 +1,5 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+  return 5
 }
 
-module.exports = countChar;
\ No newline at end of file
+module.exports = countChar;
diff --git a/Sprint-3/3-mandatory-practice/implement/count.test.js b/Sprint-3/2-practice-tdd/count.test.js
similarity index 100%
rename from Sprint-3/3-mandatory-practice/implement/count.test.js
rename to Sprint-3/2-practice-tdd/count.test.js
diff --git a/Sprint-3/2-practice-tdd/get-ordinal-number.js b/Sprint-3/2-practice-tdd/get-ordinal-number.js
new file mode 100644
index 000000000..f95d71db1
--- /dev/null
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.js
@@ -0,0 +1,5 @@
+function getOrdinalNumber(num) {
+  return "1st";
+}
+
+module.exports = getOrdinalNumber;
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
similarity index 88%
rename from Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
rename to Sprint-3/2-practice-tdd/get-ordinal-number.test.js
index 6d55dfbb4..dfe4b6091 100644
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
+++ b/Sprint-3/2-practice-tdd/get-ordinal-number.test.js
@@ -9,5 +9,5 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // Then the function should return "1st"
 
 test("should return '1st' for 1", () => {
-    expect(getOrdinalNumber(1)).toEqual("1st");
-    });
+  expect(getOrdinalNumber(1)).toEqual("1st");
+});
diff --git a/Sprint-3/2-practice-tdd/repeat.js b/Sprint-3/2-practice-tdd/repeat.js
new file mode 100644
index 000000000..00e60d7f3
--- /dev/null
+++ b/Sprint-3/2-practice-tdd/repeat.js
@@ -0,0 +1,5 @@
+function repeat() {
+  return "hellohellohello";
+}
+
+module.exports = repeat;
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.test.js b/Sprint-3/2-practice-tdd/repeat.test.js
similarity index 89%
rename from Sprint-3/3-mandatory-practice/implement/repeat.test.js
rename to Sprint-3/2-practice-tdd/repeat.test.js
index 8a4ab42ef..34097b09c 100644
--- a/Sprint-3/3-mandatory-practice/implement/repeat.test.js
+++ b/Sprint-3/2-practice-tdd/repeat.test.js
@@ -10,11 +10,11 @@ const repeat = require("./repeat");
 // Then it should repeat the str count times and return a new string containing the repeated str values.
 
 test("should repeat the string count times", () => {
-    const str = "hello";
-    const count = 3;
-    const repeatedStr = repeat(str, count);
-    expect(repeatedStr).toEqual("hellohellohello");
-    });
+  const str = "hello";
+  const count = 3;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hellohellohello");
+});
 
 // case: handle Count of 1:
 // Given a target string str and a count equal to 1,
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
deleted file mode 100644
index 24f528b0d..000000000
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
+++ /dev/null
@@ -1,5 +0,0 @@
-function getOrdinalNumber(num) {
- return "1st";
-}
-
-module.exports = getOrdinalNumber;
\ No newline at end of file
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.js b/Sprint-3/3-mandatory-practice/implement/repeat.js
deleted file mode 100644
index 621f9bd35..000000000
--- a/Sprint-3/3-mandatory-practice/implement/repeat.js
+++ /dev/null
@@ -1,5 +0,0 @@
-function repeat() {
-    return "hellohellohello";
-}
-
-module.exports = repeat;
\ No newline at end of file
diff --git a/Sprint-3/3-stretch/README.md b/Sprint-3/3-stretch/README.md
new file mode 100644
index 000000000..8f01227bf
--- /dev/null
+++ b/Sprint-3/3-stretch/README.md
@@ -0,0 +1,9 @@
+# 🔍 Stretch
+
+These stretch activities are not mandatory, but we hope you will explore them after you have completed the mandatory work.
+
+In this exercise, you'll need to **play computer** with the function `find`. This function makes use of while loop statement. Your task will be to step through the code to figure out what is happening when the computer executes the code.
+
+Next, try implementing the functions specified in `password-validator.js`.
+
+Finally, set up your own script and test files for `card-validator.md`
diff --git a/Sprint-3/4-stretch-investigate/card-validator.md b/Sprint-3/3-stretch/card-validator.md
similarity index 100%
rename from Sprint-3/4-stretch-investigate/card-validator.md
rename to Sprint-3/3-stretch/card-validator.md
diff --git a/Sprint-3/4-stretch-investigate/find.js b/Sprint-3/3-stretch/find.js
similarity index 100%
rename from Sprint-3/4-stretch-investigate/find.js
rename to Sprint-3/3-stretch/find.js
diff --git a/Sprint-3/4-stretch-investigate/password-validator.js b/Sprint-3/3-stretch/password-validator.js
similarity index 100%
rename from Sprint-3/4-stretch-investigate/password-validator.js
rename to Sprint-3/3-stretch/password-validator.js
diff --git a/Sprint-3/4-stretch-investigate/password-validator.test.js b/Sprint-3/3-stretch/password-validator.test.js
similarity index 100%
rename from Sprint-3/4-stretch-investigate/password-validator.test.js
rename to Sprint-3/3-stretch/password-validator.test.js
diff --git a/Sprint-3/readme.md b/Sprint-3/readme.md
index 4cbb096fb..491afb81c 100644
--- a/Sprint-3/readme.md
+++ b/Sprint-3/readme.md
@@ -8,66 +8,9 @@
 > There is often a step by step video you can code along with too.
 > Do the prep.
 
-## 🔧 1 Implement
-
-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 assertions and build up your program case by case. Don't rush to a solution. The point of these assignments is to learn how to write assertions and build up a program step by step.
-
-Here is a recommended order:
-
-1. `1-get-angle-type.js`
-1. `2-is-proper-fraction.js`
-1. `3-get-card-value.js`
-
-## 🔧 2 Rewrite
-
-`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.
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-Jest is a whole library of helper functions we can use to make our assertions more readable and easier to write.
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-Your new task is to _rewrite_ the assertions from `./1-key-implement` using Jest syntax.
-Blank files have been created for you. Each script file has a paired `.test.js` file. Write your tests in the test file and the implementation in the script file.
-
-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
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-1. Go to 2-mandatory-rewrite/1-get-angle-type.test.js
-1. Click the green play button to run the test. It's on the left of the test function in the gutter.
-1. Read the output in the TEST_RESULTS tab at the bottom of the screen.
-1. 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`.
-
-## 3 Practice
-
-In this section you'll practice this key skill of building up your program test first. 
-
-Use the Jest syntax and complete the provided files, meeting the acceptance criteria for each function. Use the VSCode test runner to run your tests and check your progress.
-
-Recommended order:
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-1. `count.test.js`
-1. `repeat.test.js`
-1. `get-ordinal-number.test.js`
-
-## 🔍 4 Investigate Stretch
-
-These stretch activities are not mandatory, but we hope you will explore them after you have completed the key and mandatory work.
-
-In this exercise, you'll need to **play computer** with the function `find`. This function makes use of while loop statement. Your task will be to step through the code to figure out what is happening when the computer executes the code.
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-Next, try implementing the functions specified in `password-validator.js`.
-
-Finally, set up your own script and test files for `card-validator.md`
-
+This sprint you are expected to produce multiple different pull requests:
+1. One pull request for the `1-implement-and-rewrite-tests` directory.
+2. One pull request for the `2-practice-tdd` directory.
+3. Optionally, one pull request for the `3-stretch` directory.
 
+Each directory contains a README.md file with instructions for that directory.