diff --git a/src/test/java/com/thealgorithms/strings/LowerTest.java b/src/test/java/com/thealgorithms/strings/LowerTest.java new file mode 100644 index 000000000..7e3ab762c --- /dev/null +++ b/src/test/java/com/thealgorithms/strings/LowerTest.java @@ -0,0 +1,18 @@ +package com.thealgorithms.strings; + +import org.junit.jupiter.api.Test; + +import static org.junit.jupiter.api.Assertions.*; + +public class LowerTest { + @Test + public void toLowerCase() { + String input1 = "hello world"; + String input2 = "HelLO WoRld"; + String input3 = "HELLO WORLD"; + + assertEquals("hello world", Lower.toLowerCase(input1)); + assertEquals("hello world", Lower.toLowerCase(input2)); + assertEquals("hello world", Lower.toLowerCase(input3)); + } +}