diff --git a/core-java-modules/core-java-numbers-7/src/test/java/com/baeldung/securerandompositivelong/SecureRandomPositiveLongUnitTest.java b/core-java-modules/core-java-numbers-7/src/test/java/com/baeldung/securerandompositivelong/SecureRandomPositiveLongUnitTest.java
new file mode 100644
index 0000000000..7f7a778923
--- /dev/null
+++ b/core-java-modules/core-java-numbers-7/src/test/java/com/baeldung/securerandompositivelong/SecureRandomPositiveLongUnitTest.java
@@ -0,0 +1,18 @@
+package com.baeldung.securerandompositivelong;
+
+import org.junit.jupiter.api.Test;
+
+import java.security.SecureRandom;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class SecureRandomPositiveLongUnitTest {
+
+    @Test
+    void whenGenerateRandomPositiveLong_thenGetPositiveValue() {
+        SecureRandom secureRandom = new SecureRandom();
+        long randomPositiveLong = Math.abs(secureRandom.nextLong());
+
+        assertThat(randomPositiveLong).isNotNegative();
+    }
+}