solution

src/splitInteger.js

@@ -17,7 +17,7 @@ function splitInteger(value, numberOfParts) {
     rest -= part;
   }
 
-  return parts;
+  return parts.sort((a, b) => a - b);
 }
 
 module.exports = splitInteger;

src/splitInteger.test.js

@@ -4,18 +4,18 @@ const splitInteger = require('./splitInteger');
 
 test(`should split a number into equal parts
   if a value is divisible by a numberOfParts`, () => {
-
+  expect(splitInteger(8, 2)).toEqual([4, 4]);
 });
 
 test(`should return a part equals to a value
   when splitting into 1 part`, () => {
-
+  expect(splitInteger(1000, 1)).toHaveLength(1);
 });
 
 test('should sort parts ascending if they are not equal', () => {
-
+  expect(splitInteger(10, 3)).toEqual([3, 3, 4]);
 });
 
 test('should add zeros if value < numberOfParts', () => {
-
+  expect(splitInteger(4, 5)).toContain(0);
 });