diff --git a/core-java-modules/core-java-collections-maps-8/src/test/java/com/baeldung/map/randomkey/RandomKeyUnitTest.java b/core-java-modules/core-java-collections-maps-8/src/test/java/com/baeldung/map/randomkey/RandomKeyUnitTest.java
new file mode 100644
index 000000000000..05031d58ca38
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+++ b/core-java-modules/core-java-collections-maps-8/src/test/java/com/baeldung/map/randomkey/RandomKeyUnitTest.java
@@ -0,0 +1,73 @@
+package com.baeldung.map.randomkey;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.security.SecureRandom;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.junit.jupiter.api.Test;
+
+class RandomKeyUnitTest {
+
+    @Test
+    void givenMap_whenUsingRandomClass_thenGetRandomKey() {
+        Map<String, String> countries = Map.of("Japan", "Tokyo", "Spain", "Madrid");
+
+        List<String> countryNames = new ArrayList<String>(countries.keySet());
+        int randomIndex = new Random().nextInt(countryNames.size());
+        String randomCountry = countryNames.get(randomIndex);
+
+        assertThat(countries).containsKey(randomCountry);
+    }
+
+    @Test
+    void givenMap_whenUsingMathRandomMethod_thenGetRandomKey() {
+        Map<String, String> countries = Map.of("Japan", "Tokyo", "Spain", "Madrid");
+
+        List<String> countryNames = new ArrayList<String>(countries.keySet());
+        int randomIndex = (int) (Math.random() * countryNames.size());
+        String randomCountry = countryNames.get(randomIndex);
+
+        assertThat(countries).containsKey(randomCountry);
+    }
+
+    @Test
+    void givenMap_whenUsingThreadLocalRandomClass_thenGetRandomKey() {
+        Map<String, String> countries = Map.of("Japan", "Tokyo", "Spain", "Madrid");
+
+        List<String> countryNames = new ArrayList<String>(countries.keySet());
+        int randomIndex = ThreadLocalRandom.current()
+            .nextInt(countryNames.size());
+        String randomCountry = countryNames.get(randomIndex);
+
+        assertThat(countries).containsKey(randomCountry);
+    }
+
+    @Test
+    void givenMap_whenUsingSecureRandomClass_thenGetRandomKey() {
+        Map<String, String> countries = Map.of("Japan", "Tokyo", "Spain", "Madrid");
+
+        List<String> countryNames = new ArrayList<String>(countries.keySet());
+        int randomIndex = new SecureRandom().nextInt(countryNames.size());
+        String randomCountry = countryNames.get(randomIndex);
+
+        assertThat(countries).containsKey(randomCountry);
+    }
+
+    @Test
+    void givenMap_whenUsingCollectionsShuffleMethod_thenGetRandomKey() {
+        Map<String, String> countries = Map.of("Japan", "Tokyo", "Spain", "Madrid");
+
+        List<String> countryNames = new ArrayList<String>(countries.keySet());
+        Collections.shuffle(countryNames);
+        String randomCountry = countryNames.get(0);
+
+        assertThat(countries).containsKey(randomCountry);
+    }
+
+}