Main

src/__tests__/arrays.test.js

@@ -19,34 +19,34 @@ const {
 describe('getNthElement', () => {
   const array = ['cat', 'dog', 'elephant', 'fox'];
 
-  xit('returns the element at the given position', () => {
+  it('returns the element at the given position', () => {
     expect(getNthElement(0, array)).toEqual('cat');
     expect(getNthElement(2, array)).toEqual('elephant');
     expect(getNthElement(3, array)).toEqual('fox');
   });
 
-  xit('if n is greater than the number of elements, it cycles back to the start', () => {
+  it('if n is greater than the number of elements, it cycles back to the start', () => {
     expect(getNthElement(4, array)).toEqual('cat');
     expect(getNthElement(5, array)).toEqual('dog');
   });
 });
 
 describe('arrayToCSVString', () => {
-  xit('returns the array elements as a comma-seperated string', () => {
+  it('returns the array elements as a comma-seperated string', () => {
     expect(arrayToCSVString(['a', 'b', 'c', 'd'])).toEqual('a,b,c,d');
     expect(arrayToCSVString([1, 2, 3, 4, 5])).toEqual('1,2,3,4,5');
   });
 });
 
 describe('csvStringToArray', () => {
-  xit('converts the csv string as an array', () => {
+  it('converts the csv string as an array', () => {
     expect(csvStringToArray('a,b,c,d')).toEqual(['a', 'b', 'c', 'd']);
     expect(csvStringToArray('1,2,3,4,5')).toEqual(['1', '2', '3', '4', '5']);
   });
 });
 
 describe('addToArray', () => {
-  xit('adds the item to the end of the array', () => {
+  it('adds the item to the end of the array', () => {
     const array = [];
     const array2 = [1, 2, 3];
 
@@ -59,7 +59,7 @@ describe('addToArray', () => {
 });
 
 describe('addToArray2', () => {
-  xit('returns a new array with the value appended', () => {
+  it('returns a new array with the value appended', () => {
     const array = ['a', 'b', 'c'];
     const array2 = [1, 2, 3];
 
@@ -72,7 +72,7 @@ describe('addToArray2', () => {
 });
 
 describe('removeNthElement', () => {
-  xit('removes the element at position n', () => {
+  it('removes the element at position n', () => {
     const array = ['ant', 'bison', 'cockerel', 'duck', 'elephant'];
     removeNthElement(2, array);
     expect(array).toEqual(['ant', 'bison', 'duck', 'elephant']);
@@ -84,14 +84,14 @@ describe('removeNthElement', () => {
 });
 
 describe('numbersToStrings', () => {
-  xit('converts every number in the array to a string', () => {
+  it('converts every number in the array to a string', () => {
     expect(numbersToStrings([1, 2, 3])).toEqual(['1', '2', '3']);
     expect(numbersToStrings([7, 8, 9])).toEqual(['7', '8', '9']);
   });
 });
 
 describe('uppercaseWordsInArray', () => {
-  xit('makes every string in the array uppercase', () => {
+  it('makes every string in the array uppercase', () => {
     expect(uppercaseWordsInArray(['cat', 'mouse', 'banana'])).toEqual([
       'CAT',
       'MOUSE',
@@ -106,7 +106,7 @@ describe('uppercaseWordsInArray', () => {
 });
 
 describe('reverseWordsInArray', () => {
-  xit('reverses every string in an array', () => {
+  it('reverses every string in an array', () => {
     expect(reverseWordsInArray(['cat', 'Mouse', 'banana'])).toEqual([
       'tac',
       'esuoM',
@@ -121,14 +121,14 @@ describe('reverseWordsInArray', () => {
 });
 
 describe('onlyEven', () => {
-  xit('filters the array and only returns even numbers', () => {
+  it('filters the array and only returns even numbers', () => {
     expect(onlyEven([1, 2, 3, 4, 5, 6, 7, 8])).toEqual([2, 4, 6, 8]);
     expect(onlyEven([8, 9, 10, 11, 12, 13, 14, 15])).toEqual([8, 10, 12, 14]);
   });
 });
 
 describe('removeNthElement2', () => {
-  xit('returns an array with the nth element removed, and does not mutate the original', () => {
+  it('returns an array with the nth element removed, and does not mutate the original', () => {
     const array = ['bike', 'car', 'train', 'bus'];
     expect(removeNthElement2(2, array)).toEqual(['bike', 'car', 'bus']);
     expect(array).toEqual(['bike', 'car', 'train', 'bus']);
@@ -139,7 +139,7 @@ describe('removeNthElement2', () => {
 });
 
 describe('elementsStartingWithAVowel', () => {
-  xit('returns elements starting with a vowel', () => {
+  it('returns elements starting with a vowel', () => {
     expect(
       elementsStartingWithAVowel([
         'apple',
@@ -179,7 +179,7 @@ describe('elementsStartingWithAVowel', () => {
     ).toEqual(['aaaa', 'eeee']);
   });
 
-  xit('is case insensitive', () => {
+  it('is case insensitive', () => {
     expect(
       elementsStartingWithAVowel([
         'Apple',
@@ -221,7 +221,7 @@ describe('elementsStartingWithAVowel', () => {
 });
 
 describe('removeSpaces', () => {
-  xit('returns the string with the space characters removed', () => {
+  it('returns the string with the space characters removed', () => {
     expect(removeSpaces('this string has spaces')).toEqual(
       'thisstringhasspaces'
     );
@@ -232,14 +232,14 @@ describe('removeSpaces', () => {
 });
 
 describe('sumNumbers', () => {
-  xit('returns the sum of the numbers in the array', () => {
+  it('returns the sum of the numbers in the array', () => {
     expect(sumNumbers([1, 3, 5, 6, 2, 8])).toEqual(25);
     expect(sumNumbers([1, 3, 5])).toEqual(9);
   });
 });
 
 describe('sortByLastLetter', () => {
-  xit('sorts the string by the last character', () => {
+  it('sorts the string by the last character', () => {
     expect(
       sortByLastLetter(['Lannister', 'Stark', 'Greyjoy', 'Targaryen'])
     ).toEqual(['Stark', 'Targaryen', 'Lannister', 'Greyjoy']);

src/__tests__/booleans.test.js

@@ -17,14 +17,14 @@ const {
 } = require('../booleans');
 
 describe('negate', () => {
-  xit('returns the opposite of the passed boolean value', () => {
+  it('returns the opposite of the passed boolean value', () => {
     expect(negate(true)).toBe(false);
     expect(negate(false)).toBe(true);
   });
 });
 
 describe('both', () => {
-  xit('returns true if both of the given booleans are true', () => {
+  it('returns true if both of the given booleans are true', () => {
     expect(both(true, true)).toBe(true);
     expect(both(true, false)).toBe(false);
     expect(both(false, true)).toBe(false);
@@ -33,7 +33,7 @@ describe('both', () => {
 });
 
 describe('either', () => {
-  xit('returns true if at least one of the given booleans are true', () => {
+  it('returns true if at least one of the given booleans are true', () => {
     expect(either(true, true)).toBe(true);
     expect(either(true, false)).toBe(true);
     expect(either(false, true)).toBe(true);
@@ -42,7 +42,7 @@ describe('either', () => {
 });
 
 describe('none', () => {
-  xit('returns true if neither of the given booleans are true', () => {
+  it('returns true if neither of the given booleans are true', () => {
     expect(none(true, true)).toBe(false);
     expect(none(true, false)).toBe(false);
     expect(none(false, true)).toBe(false);
@@ -51,7 +51,7 @@ describe('none', () => {
 });
 
 describe('one', () => {
-  xit('returns true if exactly one of the given booleans are true', () => {
+  it('returns true if exactly one of the given booleans are true', () => {
     expect(one(true, true)).toBe(false);
     expect(one(true, false)).toBe(true);
     expect(one(false, true)).toBe(true);
@@ -60,7 +60,7 @@ describe('one', () => {
 });
 
 describe('truthiness', () => {
-  xit('returns the truthiness of the given value', () => {
+  it('returns the truthiness of the given value', () => {
     expect(truthiness('')).toBe(false);
     expect(truthiness('dbbd')).toBe(true);
     expect(truthiness(0)).toBe(false);
@@ -74,7 +74,7 @@ describe('truthiness', () => {
 });
 
 describe('isEqual', () => {
-  xit('returns whether the two values are equal', () => {
+  it('returns whether the two values are equal', () => {
     expect(isEqual(true, false)).toBe(false);
     expect(isEqual(true, true)).toBe(true);
     expect(isEqual('true', 'true')).toBe(true);
@@ -86,7 +86,7 @@ describe('isEqual', () => {
 });
 
 describe('isGreaterThan', () => {
-  xit('returns true if the first number is strictly greater than the second', () => {
+  it('returns true if the first number is strictly greater than the second', () => {
     expect(isGreaterThan(1, 2)).toBe(false);
     expect(isGreaterThan(3, 2)).toBe(true);
     expect(isGreaterThan(4, 4)).toBe(false);
@@ -98,7 +98,7 @@ describe('isGreaterThan', () => {
 });
 
 describe('isLessThanOrEqualTo', () => {
-  xit('returns true if the first number is less than or equal to the second', () => {
+  it('returns true if the first number is less than or equal to the second', () => {
     expect(isLessThanOrEqualTo(1, 2)).toBe(true);
     expect(isLessThanOrEqualTo(3, 2)).toBe(false);
     expect(isLessThanOrEqualTo(4, 4)).toBe(true);
@@ -108,7 +108,7 @@ describe('isLessThanOrEqualTo', () => {
 });
 
 describe('isOdd', () => {
-  xit('returns whether the number is odd', () => {
+  it('returns whether the number is odd', () => {
     expect(isOdd(5)).toBe(true);
     expect(isOdd(6)).toBe(false);
     expect(isOdd(7)).toBe(true);
@@ -117,7 +117,7 @@ describe('isOdd', () => {
 });
 
 describe('isEven', () => {
-  xit('returns whether the number is even', () => {
+  it('returns whether the number is even', () => {
     expect(isEven(5)).toBe(false);
     expect(isEven(6)).toBe(true);
     expect(isEven(7)).toBe(false);
@@ -126,7 +126,7 @@ describe('isEven', () => {
 });
 
 describe('isSquare', () => {
-  xit('returns true if the number is a square', () => {
+  it('returns true if the number is a square', () => {
     expect(isSquare(9)).toEqual(true);
     expect(isSquare(4)).toEqual(true);
     expect(isSquare(5)).toEqual(false);
@@ -136,7 +136,7 @@ describe('isSquare', () => {
 });
 
 describe('startsWith', () => {
-  xit('returns whether the given string starts with the given character', () => {
+  it('returns whether the given string starts with the given character', () => {
     expect(startsWith('a', 'aardvark')).toBe(true);
     expect(startsWith('c', 'aardvark')).toBe(false);
     expect(startsWith('b', 'baardvark')).toBe(true);
@@ -146,17 +146,17 @@ describe('startsWith', () => {
 });
 
 describe('containsVowels', () => {
-  xit('returns whether the given string contains vowels', () => {
+  it('returns whether the given string contains vowels', () => {
     expect(containsVowels('cat')).toBe(true);
     expect(containsVowels('DOG')).toBe(true);
     expect(containsVowels('why')).toBe(false);
   });
 });
 
 describe('isLowerCase', () => {
-  xit('it returns true if the given string is lowercase', () => {
+  it('it returns true if the given string is lowercase', () => {
     expect(isLowerCase('abc')).toBe(true);
     expect(isLowerCase('abc213')).toBe(true);
     expect(isLowerCase('Abc')).toBe(false);
   });
-});
+});

src/__tests__/numbers.test.js

@@ -13,7 +13,7 @@ const {
 } = require('../numbers');
 
 describe('add', () => {
-  xit('adds the two numbers together', () => {
+  it('adds the two numbers together', () => {
     expect(add(2, 1)).toEqual(3);
     expect(add(15, 76)).toEqual(91);
     expect(add(12, 0)).toEqual(12);
@@ -22,7 +22,7 @@ describe('add', () => {
 });
 
 describe('subtract', () => {
-  xit('subtracts the second number from the first', () => {
+  it('subtracts the second number from the first', () => {
     expect(subtract(2, 1)).toEqual(1);
     expect(subtract(1, 2)).toEqual(-1);
     expect(subtract(-2, 1)).toEqual(-3);
@@ -32,15 +32,15 @@ describe('subtract', () => {
 });
 
 describe('multiply', () => {
-  xit('multiplies the two numbers together', () => {
+  it('multiplies the two numbers together', () => {
     expect(multiply(10, 3)).toEqual(30);
     expect(multiply(-11, 5)).toEqual(-55);
     expect(multiply(-4, -9)).toEqual(36);
   });
 });
 
 describe('divide', () => {
-  xit('divides the first number by the second number', () => {
+  it('divides the first number by the second number', () => {
     expect(divide(20, 5)).toEqual(4);
     expect(divide(5, 2)).toEqual(2.5);
     expect(divide(2, 5)).toEqual(0.4);
@@ -49,39 +49,39 @@ describe('divide', () => {
 });
 
 describe('power', () => {
-  xit('returns the first number to the power of the second', () => {
+  it('returns the first number to the power of the second', () => {
     expect(power(5, 2)).toEqual(25);
     expect(power(2, 3)).toEqual(8);
     expect(power(10, 5)).toEqual(100000);
   });
 });
 
 describe('round', () => {
-  xit('rounds the number to the nearest integer', () => {
+  it('rounds the number to the nearest integer', () => {
     expect(round(2.1)).toEqual(2);
     expect(round(9.7)).toEqual(10);
     expect(round(5.5)).toEqual(6);
   });
 });
 
 describe('roundUp', () => {
-  xit('rounds the number up to the nearest integer', () => {
+  it('rounds the number up to the nearest integer', () => {
     expect(roundUp(2.1)).toEqual(3);
     expect(roundUp(9.7)).toEqual(10);
     expect(roundUp(5.5)).toEqual(6);
   });
 });
 
 describe('roundDown', () => {
-  xit('rounds the number down to the nearest integer', () => {
+  it('rounds the number down to the nearest integer', () => {
     expect(roundDown(2.1)).toEqual(2);
     expect(roundDown(9.7)).toEqual(9);
     expect(roundDown(5.5)).toEqual(5);
   });
 });
 
 describe('absolute', () => {
-  xit('returns the absolute value of the number', () => {
+  it('returns the absolute value of the number', () => {
     expect(absolute(-1)).toEqual(1);
     expect(absolute(1)).toEqual(1);
     expect(absolute(0)).toEqual(0);
@@ -93,7 +93,7 @@ describe('quotient', () => {
   // the first by the second, without the remainder
   // 18 divided by 7 is 2 remainder 4 (or 2.571...)
   // so the quotient of 18 and 7 is 2
-  xit('returns the quotient from dividing the first number by the second number', () => {
+  it('returns the quotient from dividing the first number by the second number', () => {
     expect(quotient(10, 3)).toEqual(3);
     expect(quotient(18, 7)).toEqual(2);
     expect(quotient(77, 10)).toEqual(7);
@@ -102,7 +102,7 @@ describe('quotient', () => {
 });
 
 describe('remainder', () => {
-  xit('returns the remainder when dividing the first number by the second number', () => {
+  it('returns the remainder when dividing the first number by the second number', () => {
     expect(remainder(10, 3)).toEqual(1);
     expect(remainder(18, 7)).toEqual(4);
     expect(remainder(77, 10)).toEqual(7);