Support for async/reactive close methods (e.g. R2DBC)

Closes gh-26991

spring-r2dbc/src/test/java/org/springframework/r2dbc/core/H2DatabaseClientContextIntegrationTests.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2002-2023 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.r2dbc.core;
+
+import io.r2dbc.h2.CloseableConnectionFactory;
+import io.r2dbc.h2.H2ConnectionFactory;
+import io.r2dbc.spi.ConnectionFactory;
+import io.r2dbc.spi.R2dbcNonTransientResourceException;
+import org.junit.jupiter.api.AfterEach;
+
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+
+/**
+ * @author Juergen Hoeller
+ * @since 6.1
+ */
+public class H2DatabaseClientContextIntegrationTests extends H2DatabaseClientIntegrationTests {
+
+	AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(Config.class);
+
+	CloseableConnectionFactory connectionFactory = context.getBean(CloseableConnectionFactory.class);
+
+
+	@Override
+	protected ConnectionFactory createConnectionFactory() {
+		return connectionFactory;
+	}
+
+	@AfterEach
+	public void tearDown() {
+		context.close();
+		assertThatExceptionOfType(R2dbcNonTransientResourceException.class).isThrownBy(
+				() -> connectionFactory.create().block());
+	}
+
+
+	@Configuration
+	static class Config {
+
+		@Bean
+		ConnectionFactory connectionFactory() {
+			return H2ConnectionFactory.inMemory("r2dbc-context");
+		}
+	}
+
+}