From 140f6ec6e390a3ca4e84276c010736e93fdc6a39 Mon Sep 17 00:00:00 2001
From: Aldo Telese <63289653+aldotele@users.noreply.github.com>
Date: Mon, 4 Apr 2022 10:21:53 +0200
Subject: [PATCH] Add test for Upper (#3001)

---
 .../com/thealgorithms/strings/UpperTest.java    | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/test/java/com/thealgorithms/strings/UpperTest.java

diff --git a/src/test/java/com/thealgorithms/strings/UpperTest.java b/src/test/java/com/thealgorithms/strings/UpperTest.java
new file mode 100644
index 000000000..542b175c9
--- /dev/null
+++ b/src/test/java/com/thealgorithms/strings/UpperTest.java
@@ -0,0 +1,17 @@
+package com.thealgorithms.strings;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class UpperTest {
+    @Test
+    public void toUpperCase() {
+        String input1 = "hello world";
+        String input2 = "hElLo WoRlD";
+        String input3 = "HELLO WORLD";
+        assertEquals("HELLO WORLD", Upper.toUpperCase(input1));
+        assertEquals("HELLO WORLD", Upper.toUpperCase(input2));
+        assertEquals("HELLO WORLD", Upper.toUpperCase(input3));
+    }
+}