diff --git a/package.json b/package.json
index 068403cd..efc125c3 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "scripts": {
     "init": "mate-scripts init",
     "start": "mate-scripts start",
-    "format": "prettier --ignore-path .prettierignore --write './src/**/*.js'",
+    "format": "prettier --ignore-path .prettierignore --write ./src/**/*.js",
     "lint": "npm run format && mate-scripts lint",
     "test:only": "mate-scripts test",
     "update": "mate-scripts update",
diff --git a/src/splitInteger.test.js b/src/splitInteger.test.js
index 24003dd5..f15f4778 100644
--- a/src/splitInteger.test.js
+++ b/src/splitInteger.test.js
@@ -3,11 +3,33 @@
 const splitInteger = require('./splitInteger');
 
 test(`should split a number into equal parts
-  if a value is divisible by a numberOfParts`, () => {});
+  if a value is divisible by a numberOfParts`, () => {
+  const result = splitInteger(6, 2);
+
+  expect(result).toEqual([3, 3]);
+});
 
 test(`should return a part equals to a value
-  when splitting into 1 part`, () => {});
+  when splitting into 1 part`, () => {
+  const result = splitInteger(8, 1);
+
+  expect(result).toEqual([8]);
+});
+
+test('should sort parts ascending if they are not equal', () => {
+  const result = splitInteger(32, 6);
+
+  expect(result).toEqual([5, 5, 5, 5, 6, 6]);
+});
+
+test('should add zeros if value < numberOfParts', () => {
+  const result = splitInteger(0, 2);
+
+  expect(result).toEqual([0, 0]);
+});
 
-test('should sort parts ascending if they are not equal', () => {});
+test('should split 17 into 4 parts as [4, 4, 4, 5]', () => {
+  const result = splitInteger(17, 4);
 
-test('should add zeros if value < numberOfParts', () => {});
+  expect(result).toEqual([4, 4, 4, 5]);
+});