chore: merge "Tests check vowels (#691)"

* add tests to CheckVowels to cover additional inputs and edge cases * make line spacing consistent with other test files

Author: charliejmoore

String/CheckVowels.test.js

@@ -4,9 +4,64 @@ describe('Test the checkVowels function', () => {
  it('expect throws on use wrong param', () => {
  expect(() => checkVowels(0)).toThrow()
  })
+
  it('count the vowels in a string', () => {
  const value = 'Mad World'
  const countVowels = checkVowels(value)
  expect(countVowels).toBe(2)
  })
+
+ it('should return 0 when input is a string with no vowels', () => {
+ const value = 'bcdfgh'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(0)
+ })
+
+ it('should return 1 when input is a string of length 1 that is a vowel', () => {
+ const value = 'a'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(1)
+ })
+
+ it('should return the correct result when input is in all uppercase letters', () => {
+ const value = 'ABCDE'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(2)
+ })
+
+ it('should return the correct result when input is in all lowercase letters', () => {
+ const value = 'abcdefghi'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(3)
+ })
+
+ it('should return the correct result when input string contains spaces', () => {
+ const value = 'abc def ghi'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(3)
+ })
+
+ it('should return the correct result when input contains number characters', () => {
+ const value = 'a1b2c3'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(1)
+ })
+
+ it('should return the correct result when input contains punctuation characters', () => {
+ const value = 'a!b.ce)'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(2)
+ })
+
+ it('should return 0 when the input is an empty string', () => {
+ const value = ''
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(0)
+ })
+
+ it('should count multiple occurances of the same vowel in the input', () => {
+ const value = 'aaaaa'
+ const countVowels = checkVowels(value)
+ expect(countVowels).toBe(5)
+ })
 })