From b03f493f8c772d9021ca88da3afb181eef67e355 Mon Sep 17 00:00:00 2001
From: taole33 <taole33@hotmail.com>
Date: Tue, 9 Dec 2025 19:51:59 +0900
Subject: [PATCH] feat(module/mariadb): Add getR2dbcUrl() to
 MariaDBR2DBCDatabaseContainer

This adds a static helper method `getR2dbcUrl(MariaDBContainer)` to generate a valid R2DBC connection string. This simplifies configuration for R2DBC users.

Relates to #8797
---
 .../MariaDBR2DBCDatabaseContainer.java        | 11 ++++++++
 .../MariaDBR2DBCDatabaseContainerTest.java    | 25 +++++++++++++++++++
 2 files changed, 36 insertions(+)

diff --git a/modules/mariadb/src/main/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainer.java b/modules/mariadb/src/main/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainer.java
index 99041e83e28..bf5a1404a90 100644
--- a/modules/mariadb/src/main/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainer.java
+++ b/modules/mariadb/src/main/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainer.java
@@ -32,4 +32,15 @@ public ConnectionFactoryOptions configure(ConnectionFactoryOptions options) {
             .option(ConnectionFactoryOptions.PASSWORD, container.getPassword())
             .build();
     }
+
+    public static String getR2dbcUrl(MariaDBContainer<?> container) {
+        return String.format(
+            "r2dbc:mariadb://%s:%s@%s:%d/%s",
+            container.getUsername(),
+            container.getPassword(),
+            container.getHost(),
+            container.getMappedPort(MariaDBContainer.MARIADB_PORT),
+            container.getDatabaseName()
+        );
+    }
 }
diff --git a/modules/mariadb/src/test/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainerTest.java b/modules/mariadb/src/test/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainerTest.java
index 0f4acd889d5..c819b08ce94 100644
--- a/modules/mariadb/src/test/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainerTest.java
+++ b/modules/mariadb/src/test/java/org/testcontainers/containers/MariaDBR2DBCDatabaseContainerTest.java
@@ -1,9 +1,13 @@
 package org.testcontainers.containers;
 
 import io.r2dbc.spi.ConnectionFactoryOptions;
+import org.junit.jupiter.api.Test;
+import org.testcontainers.MariaDBTestImages;
 import org.testcontainers.r2dbc.AbstractR2DBCDatabaseContainerTest;
 import org.testcontainers.utility.DockerImageName;
 
+import static org.assertj.core.api.Assertions.assertThat;
+
 public class MariaDBR2DBCDatabaseContainerTest extends AbstractR2DBCDatabaseContainerTest<MariaDBContainer<?>> {
 
     @Override
@@ -20,4 +24,25 @@ protected String createR2DBCUrl() {
     protected MariaDBContainer<?> createContainer() {
         return new MariaDBContainer<>(DockerImageName.parse("mariadb:10.3.39"));
     }
+
+    @Test
+    public void testGetR2dbcUrl() {
+        try (MariaDBContainer<?> container = new MariaDBContainer<>(MariaDBTestImages.MARIADB_IMAGE)) {
+            container.start();
+
+            String r2dbcUrl = MariaDBR2DBCDatabaseContainer.getR2dbcUrl(container);
+
+            String user = container.getUsername();
+            String password = container.getPassword();
+            String host = container.getHost();
+            Integer port = container.getMappedPort(MariaDBContainer.MARIADB_PORT);
+            String db = container.getDatabaseName();
+
+            String expectedPattern = String.format("^r2dbc:mariadb://%s:%s@%s:%d/%s$", user, password, host, port, db);
+
+            assertThat(r2dbcUrl)
+                .as("URL must strictly match format 'r2dbc:mariadb://user:pass@host:port/db'")
+                .matches(expectedPattern);
+        }
+    }
 }