From 70275154757f5c461b92f432527e8e6284d073b5 Mon Sep 17 00:00:00 2001
From: Eric Lavault <39483232+lvlte@users.noreply.github.com>
Date: Tue, 5 Oct 2021 19:29:07 +0200
Subject: [PATCH] Add tests for ProjectEuler problem 20 (Jest).

---
 Project-Euler/test/Problem020.test.js | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Project-Euler/test/Problem020.test.js

diff --git a/Project-Euler/test/Problem020.test.js b/Project-Euler/test/Problem020.test.js
new file mode 100644
index 000000000..5eaa083dc
--- /dev/null
+++ b/Project-Euler/test/Problem020.test.js
@@ -0,0 +1,16 @@
+const factorialDigitSum = require('../Problem020')
+
+describe('Check Problem 20 - Factorial digit sum', () => {
+  it('Factorial digit sum of 10!', () => {
+    expect(factorialDigitSum(10)).toBe(27)
+  })
+
+  it('Factorial digit sum of 100!', () => {
+    expect(factorialDigitSum()).toBe(648)
+    expect(factorialDigitSum(100)).toBe(648)
+  })
+
+  it('Factorial digit sum of 1000!', () => {
+    expect(factorialDigitSum(1000)).toBe(10539)
+  })
+})