Finished ex1, ex2, ex3, ex4 for assignment week 3

Author: Dmytro-Doronin

.test-summary/TEST_SUMMARY.md

@@ -0,0 +1,12 @@
+## Test Summary
+
+**Mentors**: For more information on how to review homework assignments, please refer to the [Review Guide](https://github.com/HackYourFuture/mentors/blob/main/assignment-support/review-guide.md).
+
+### 1-JavaScript - Week3
+
+|          Exercise          | Passed | Failed | ESLint |
+|----------------------------|--------|--------|--------|
+| ex1-doubleEvenNumbers.test |   1    |   -    |   ✓    |
+| ex2-mondaysWorth.test      |   2    |   -    |   ✓    |
+| ex3-lemonAllergy.test      |   3    |   -    |   ✓    |
+| ex4-observable             |   3    |   -    |   ✓    |

1-JavaScript/Week3/assignment/ex1-doubleEvenNumbers.test.js

@@ -11,14 +11,9 @@ Let's rewrite it (or _refactor_ it, as experienced developers would call it):
 ------------------------------------------------------------------------------*/
 // ! Function to be tested
 function doubleEvenNumbers(numbers) {
-  // TODO rewrite the function body using `map` and `filter`.
-  const newNumbers = [];
-  for (let i = 0; i < numbers.length; i++) {
-    if (numbers[i] % 2 === 0) {
-      newNumbers.push(numbers[i] * 2);
-    }
-  }
-  return newNumbers;
+  return numbers
+    .filter(number => number % 2 === 0)
+    .map(number => number * 2)
 }
 
 // ! Unit test (using Jest)

1-JavaScript/Week3/assignment/ex2-mondaysWorth.test.js

@@ -30,8 +30,15 @@ const mondayTasks = [
 
 const hourlyRate = 25;
 
-function computeEarnings(/* TODO parameter(s) go here */) {
-  // TODO complete this function
+function computeEarnings(mondayTasks, hourlyRate) {
+  const totalDuration = mondayTasks.reduce((acc, current) => {
+    return acc + current.duration
+  }, 0)
+
+  const totalHours = totalDuration / 60
+  const totalAmount = (totalHours * hourlyRate).toFixed(2)
+
+  return `€${totalAmount}`
 }
 
 // ! Unit tests (using Jest)

1-JavaScript/Week3/assignment/ex3-lemonAllergy.test.js

@@ -25,26 +25,31 @@ const fruitBasket = [
 ];
 
 // ! Function under test
-function sanitizeFruitBasket(/* TODO parameter(s) go here */) {
-  // TODO complete this function
+function sanitizeFruitBasket(fruitBasket, sanitizeFruit) {
+  return fruitBasket.filter(fruit => fruit !== sanitizeFruit)
 }
 
 // ! Unit tests (using Jest)
 describe('js-wk3-ex3-lemonAllergy', () => {
   test('sanitizeFruitBasket should take two parameters', () => {
-    // TODO replace next line with your code
-    expect(false).toBe(true);
+    expect(sanitizeFruitBasket).toHaveLength(2)
   });
 
   test('sanitizeFruitBasket should not modify the original `fruitBasket` array', () => {
     // Save the original contents of the fruit basket
-    const originalFruitBasketContents = [...fruitBasket];
-    // TODO replace next line with your code
-    expect(false).toBe(true);
+    const originalFruitBasketContents = [...fruitBasket]
+    sanitizeFruitBasket(fruitBasket, 'lemon')
+    expect(fruitBasket).toEqual(originalFruitBasketContents)
   });
 
   test('sanitizeFruitBasket should return a new array that does not include the unwanted `lemon`', () => {
-    // TODO replace next line with your code
-    expect(false).toBe(true);
+    const sanitizeArray = [
+      'apple',
+      'grapefruit',
+      'banana',
+      'watermelon',
+    ]
+    const newArray = sanitizeFruitBasket(fruitBasket, 'lemon')
+    expect(newArray).toEqual(sanitizeArray);
   });
 });

1-JavaScript/Week3/assignment/ex4-observable/ex4-observable.js

@@ -16,10 +16,12 @@ export function createObservable() {
   const subscribers = [];
   return {
     subscribe(subscriber) {
-      // TODO complete this function
+      subscribers.push(subscriber)
     },
     notify(message) {
-      // TODO complete this function
+      subscribers.forEach(subscriber => {
+        subscriber(message)
+      })
     },
   };
 }

1-JavaScript/Week3/test-reports/ex1-doubleEvenNumbers.test.report.txt

@@ -0,0 +1,13 @@
+*** Unit Test Error Report ***
+
+ PASS  1-JavaScript/Week3/assignment/ex1-doubleEvenNumbers.test.js
+  js-wk3-ex1-doubleEvenNumbers
+    ✅ doubleEvenNumbers should take the even numbers and double them (1 ms)
+
+Test Suites: 1 passed, 1 total
+Tests:       1 passed, 1 total
+Snapshots:   0 total
+Time:        0.251 s, estimated 1 s
+Ran all test suites matching /\/Users\/dimadoronin\/Documents\/Programming\/HackYourFuture\/Assignments-Cohort54\/1-JavaScript\/Week3\/assignment\/ex1-doubleEvenNumbers.test.js/i.
+No linting errors detected.
+No spelling errors detected.

1-JavaScript/Week3/test-reports/ex2-mondaysWorth.test.report.txt

@@ -0,0 +1,14 @@
+*** Unit Test Error Report ***
+
+ PASS  1-JavaScript/Week3/assignment/ex2-mondaysWorth.test.js
+  js-wk3-mondaysWorth
+    ✅ computeEarnings should take two parameters (1 ms)
+    ✅ computeEarnings should compute the earnings as a formatted Euro amount
+
+Test Suites: 1 passed, 1 total
+Tests:       2 passed, 2 total
+Snapshots:   0 total
+Time:        0.209 s, estimated 1 s
+Ran all test suites matching /\/Users\/dimadoronin\/Documents\/Programming\/HackYourFuture\/Assignments-Cohort54\/1-JavaScript\/Week3\/assignment\/ex2-mondaysWorth.test.js/i.
+No linting errors detected.
+No spelling errors detected.

1-JavaScript/Week3/test-reports/ex3-lemonAllergy.test.report.txt

@@ -0,0 +1,15 @@
+*** Unit Test Error Report ***
+
+ PASS  1-JavaScript/Week3/assignment/ex3-lemonAllergy.test.js
+  js-wk3-ex3-lemonAllergy
+    ✅ sanitizeFruitBasket should take two parameters (1 ms)
+    ✅ sanitizeFruitBasket should not modify the original `fruitBasket` array (1 ms)
+    ✅ sanitizeFruitBasket should return a new array that does not include the unwanted `lemon`
+
+Test Suites: 1 passed, 1 total
+Tests:       3 passed, 3 total
+Snapshots:   0 total
+Time:        0.246 s, estimated 1 s
+Ran all test suites matching /\/Users\/dimadoronin\/Documents\/Programming\/HackYourFuture\/Assignments-Cohort54\/1-JavaScript\/Week3\/assignment\/ex3-lemonAllergy.test.js/i.
+No linting errors detected.
+No spelling errors detected.

1-JavaScript/Week3/test-reports/ex4-observable.report.txt

@@ -0,0 +1,15 @@
+*** Unit Test Error Report ***
+
+ PASS  1-JavaScript/Week3/assignment/ex4-observable/ex4-observable.test.js
+  js-wk3-ex4-observable
+    ✅ createObservable should exist and be a function (1 ms)
+    ✅ createObservable should return an object with `subscribe` and a `notify` function properties
+    ✅ observable should notify all subscribers of any notification (1 ms)
+
+Test Suites: 1 passed, 1 total
+Tests:       3 passed, 3 total
+Snapshots:   0 total
+Time:        0.216 s, estimated 1 s
+Ran all test suites matching /\/Users\/dimadoronin\/Documents\/Programming\/HackYourFuture\/Assignments-Cohort54\/1-JavaScript\/Week3\/assignment\/ex4-observable\/ex4-observable.test.js/i.
+No linting errors detected.
+No spelling errors detected.