Added test for ScrambleStrings and formatted folder structure for other folders

Sorts/test/QuickSortRecursive.test.js

@@ -0,0 +1,21 @@
+import { quickSort } from '../QuickSortRecursive'
+
+describe('QuickSortRecursive | Partition In Place Method', () => {
+  it('Expectedly, throw some error if we pass a non-array input', () => {
+    expect(() => quickSort('xyz', 0, 2)).toThrow('Please input a valid list or array.')
+    expect(() => quickSort(null, 0, 4)).toThrow('Please input a valid list or array.')
+    expect(() => quickSort(55, 0, 2)).toThrow('Please input a valid list or array.')
+  })
+
+  it('Expectedly, the quickSort method will sort the unsorted list in ascending order', () => {
+    const unSortArray = [5, 9, 3, 4, 6, 2, 0, 1, 7, 8]
+    const sortedExpectedArray = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
+    expect(quickSort(unSortArray, 0, unSortArray.length - 1)).toEqual(sortedExpectedArray)
+  })
+
+  it('Expectedly, the quickSort method will arrange the list of character values in dictionary order.', () => {
+    const unSortList = ['d', 'e', 'c', 'a', 'f', 'b']
+    const sortedExpectedList = ['a', 'b', 'c', 'd', 'e', 'f']
+    expect(quickSort(unSortList, 0, unSortList.length - 1)).toEqual(sortedExpectedList)
+  })
+})

Sorts/test/SelectionSort.test.js

@@ -0,0 +1,22 @@
+import { selectionSort } from '../SelectionSort'
+
+describe('selectionSort', () => {
+  it('expects to return the array sorted in ascending order', () => {
+    const toSort = [5, 6, 7, 8, 1, 2, 12, 14]
+    const expected = [1, 2, 5, 6, 7, 8, 12, 14]
+
+    expect(selectionSort(toSort)).toEqual(expected)
+  })
+
+  it('expects to throw if it is not a valid array', () => {
+    expect(() => selectionSort('abc')).toThrow('Given input is not an array')
+    expect(() => selectionSort(123)).toThrow('Given input is not an array')
+    expect(() => selectionSort({})).toThrow('Given input is not an array')
+    expect(() => selectionSort(null)).toThrow('Given input is not an array')
+    expect(() => selectionSort()).toThrow('Given input is not an array')
+  })
+
+  it('expects to throw if one of the elements in the array is not a number', () => {
+    expect(() => selectionSort([1, 'x', 2])).toThrow('One of the items in your array is not a number')
+  })
+})