diff --git a/lib/utils.spec.js b/lib/utils.spec.js
new file mode 100644
index 0000000..f108623
--- /dev/null
+++ b/lib/utils.spec.js
@@ -0,0 +1,19 @@
+'use strict'
+
+const { longest, padRight } = require('./utils')
+
+describe('longest', () => {
+  test('When no fields are present, then longest is 0', () => {
+    expect(longest({})).toBe(0)
+  })
+
+  test('When fields are present, then it returns longest value', () => {
+    expect(longest({ one: 'one', seven: 'seven' })).toBe(5)
+  })
+})
+
+describe('padRight', () => {
+  test('When called, then it pads the value right with spaces', () => {
+    expect(padRight('one', 8)).toBe('one     ')
+  })
+})