From aa7ac4c5eb497b603edbfbf7749db68a0fd28fc0 Mon Sep 17 00:00:00 2001
From: deadem <deadem@gmail.com>
Date: Fri, 4 Oct 2019 10:00:09 +0300
Subject: [PATCH] add find-2nd-max tests

---
 src/_Problems_/find-2nd-max/index.js      |  4 ++++
 src/_Problems_/find-2nd-max/index.test.js | 15 +++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 src/_Problems_/find-2nd-max/index.test.js

diff --git a/src/_Problems_/find-2nd-max/index.js b/src/_Problems_/find-2nd-max/index.js
index 0cbb2433..4aad815c 100644
--- a/src/_Problems_/find-2nd-max/index.js
+++ b/src/_Problems_/find-2nd-max/index.js
@@ -20,3 +20,7 @@ function findSecondMax(arr) {
   }
   return max2;
 }
+
+module.exports = {
+  findSecondMax,
+};
diff --git a/src/_Problems_/find-2nd-max/index.test.js b/src/_Problems_/find-2nd-max/index.test.js
new file mode 100644
index 00000000..5189e10f
--- /dev/null
+++ b/src/_Problems_/find-2nd-max/index.test.js
@@ -0,0 +1,15 @@
+const { findSecondMax } = require('.');
+
+describe('FindSecondMax', () => {
+  it('Should return 6', () => {
+    expect(findSecondMax([9, 2, 3, 6])).toEqual(6);
+  });
+
+  it('Should return -1', () => {
+    expect(findSecondMax([0, -1, -2, 0])).toEqual(-1);
+  });
+
+  it('Should return 0', () => {
+    expect(findSecondMax([-2, -1, 0, 1])).toEqual(0);
+  });
+});