Move R2DBC tests to JUnit Jupiter (#10771)

Author: eddumelendez

modules/r2dbc/build.gradle

@@ -8,10 +8,17 @@ dependencies {
     api project(':testcontainers')
     api 'io.r2dbc:r2dbc-spi:0.9.0.RELEASE'
 
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher:1.11.0'
+
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.13.4'
     testImplementation 'org.assertj:assertj-core:3.27.4'
     testImplementation 'io.r2dbc:r2dbc-postgresql:0.8.13.RELEASE'
     testImplementation project(':testcontainers-postgresql')
 
     testFixturesImplementation 'io.projectreactor:reactor-core:3.7.9'
     testFixturesImplementation 'org.assertj:assertj-core:3.27.4'
 }
+
+test {
+    useJUnitPlatform()
+}

modules/r2dbc/src/test/java/org/testcontainers/r2dbc/TestcontainersR2DBCConnectionFactoryTest.java

@@ -6,7 +6,7 @@
 import io.r2dbc.spi.ConnectionFactories;
 import io.r2dbc.spi.ConnectionFactory;
 import io.r2dbc.spi.Result;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
@@ -15,10 +15,10 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 
-public class TestcontainersR2DBCConnectionFactoryTest {
+class TestcontainersR2DBCConnectionFactoryTest {
 
     @Test
-    public void failsOnUnknownProvider() {
+    void failsOnUnknownProvider() {
         String nonExistingProvider = UUID.randomUUID().toString();
         assertThatThrownBy(() -> {
                 ConnectionFactories.get(String.format("r2dbc:tc:%s:///db", nonExistingProvider));
@@ -28,7 +28,7 @@ public void failsOnUnknownProvider() {
     }
 
     @Test
-    public void reusesUntilConnectionFactoryIsClosed() {
+    void reusesUntilConnectionFactoryIsClosed() {
         String url = "r2dbc:tc:postgresql:///db?TC_IMAGE_TAG=10-alpine";
         ConnectionFactory connectionFactory = ConnectionFactories.get(url);