Add test instructions

Author: 40thieves

2-mandatory/1-create-functions.js

@@ -3,16 +3,14 @@ Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the first five elements of the passed array.
 */
-function first5() {
-}
+function first5() {}
 
 /*
 Write a function that:
 - Accepts an array as a parameter.
 - Returns a new array containing the same elements, except sorted.
 */
-function sortArray() {
-}
+function sortArray() {}
 
 /*
 NOTE: This exercise is the same as one you did last week - try to do it again using things you learnt this week.
@@ -24,17 +22,15 @@ Write a function that:
 - Removes any forward slashes (/) in the strings.
 - Makes the strings all lowercase.
 */
-function tidyUpString() {
-}
+function tidyUpString() {}
 
 /*
 Write a function that:
 - Takes an array and an index as input.
 - Returns a new array containing the same elements, but without the element at the passed index.
 */
 
-function remove() {
-}
+function remove() {}
 
 /*
 Write a function that:
@@ -44,10 +40,16 @@ Write a function that:
 - Numbers greater 100 must be replaced with 100.
 */
 
-function formatPercentage() {
-}
+function formatPercentage() {}
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 1-create-functions` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("first5 function works for more than five elements", () => {
   const numbers = [1, 2, 3, 4, 5, 6, 7, 8];

2-mandatory/2-oxygen-levels.js

@@ -13,7 +13,14 @@
 
 function findSafeOxygenLevel() {}
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 2-oxygen-levels` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("findSafeOxygenLevel function works - case 1", () => {
   expect(

2-mandatory/3-bush-berries.js

@@ -25,7 +25,14 @@ function isBushSafe(berryArray) {
   //Write your code here
 }
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 3-bush-berries` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("isBushSafe finds toxic bush", () => {
   expect(
@@ -38,3 +45,9 @@ test("isBushSafe function finds safe bush", () => {
     "Bush is safe to eat from"
   );
 });
+
+test("isBushSafe finds toxic bush when all toxic", () => {
+  expect(isBushSafe(["neon", "transparent", "red", "green", "grey"])).toEqual(
+    "Toxic! Leave bush alone!"
+  );
+});

2-mandatory/4-space-colonies.js

@@ -17,7 +17,14 @@
 
 function getSettlers() {}
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 4-space-colonies` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("getSettlers function works", () => {
   const voyagers = [

2-mandatory/5-eligible-students.js

@@ -9,7 +9,14 @@
 
 function getEligibleStudents() {}
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 5-eligible-students` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("getEligibleStudents function works", () => {
   const attendance = [

2-mandatory/6-journey-planner.js

@@ -125,7 +125,14 @@ function journeyPlanner(locations, transportMode) {
   // Implement the function body
 }
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 6-journey-planner` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 const string1 = "I Love coding and perfect code makes me happy";
 const string2 = "I don't like to do coding";

2-mandatory/7-lane-names.js

@@ -8,7 +8,14 @@
 
 function getLanes() {}
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 7-lane-names` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("getLanes function works", () => {
   const streetNames = [

2-mandatory/8-password-validator.js

@@ -45,7 +45,14 @@ function containsSymbol(string) {
   return /[!#$%.*&]/.test(string);
 }
 
-/* ======= TESTS - DO NOT MODIFY ===== */
+/* 
+===================================================
+======= TESTS - DO NOT MODIFY BELOW THIS LINE =====
+There are some Tests in this file that will help you work out if your code is working.
+To run the tests for just this one file, type `npm test -- --testPathPattern 8-password-validator` into your terminal
+(Reminder: You must have run `npm install` one time before this will work!)
+===================================================
+*/
 
 test("Example 1", () => {
   expect(