Create DictionaryTest.java

Author: Coding4Hours

src/test/java/com/thealgorithms/datastructures/dictionary/DictionaryTest.java

@@ -0,0 +1,20 @@
+package com.thealgorithms.datastructures.dictionary;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class DictionaryTest {
+
+    @Test
+    void test() {
+        Dictionary dict = new Dictionary("asdf", "a");
+        Assertions.assertEquals(dict.get("asdf"), "a");
+        dict.put("aa", "hello");
+        Assertions.assertEquals(dict.get("aa"), "hello");
+        dict.put("aa", "aaa");
+        Assertions.assertEquals(dict.get("aa"), "aaa");
+        dict.remove("aa");
+        Assertions.assertEquals(dict.get("aa"), null);
+        Assertions.assertEquals(dict.containsKey("aa"), false);
+    }
+}