merge: Add test case to HexToRGB algorithm (TheAlgorithms#1018)

Author: Ankush263

Conversions/test/HexToRGB.test.js

@@ -0,0 +1,16 @@
+import { hexStringToRGB } from '../HexToRGB'
+
+test('The RGB form of Hex String E1E1E1 is {r: 225, g: 225, b: 225}', () => {
+  const res = hexStringToRGB('E1E1E1')
+  expect(res).toEqual({ r: 225, g: 225, b: 225 })
+})
+
+test('The RGB form of Hex String 000000 is {r: 0, g: 0, b: 0}', () => {
+  const res = hexStringToRGB('000000')
+  expect(res).toEqual({ r: 0, g: 0, b: 0 })
+})
+
+test('The RGB form of Hex String 6CE1CD is {r: 108, g: 225, b: 205}', () => {
+  const res = hexStringToRGB('6CE1CD')
+  expect(res).toEqual({ r: 108, g: 225, b: 205 })
+})