Add Neo4jReactiveHealthIndicatorIntegrationTests

Add a full integration test for `Neo4jReactiveHealthIndicator`
to ensure that it works against a real server.

See gh-33428

spring-boot-project/spring-boot-actuator/build.gradle

@@ -107,6 +107,8 @@ dependencies {
 	testImplementation("org.springframework:spring-test")
 	testImplementation("com.squareup.okhttp3:mockwebserver")
 	testImplementation("org.testcontainers:junit-jupiter")
+	testImplementation("org.testcontainers:neo4j")
+	testImplementation("org.testcontainers:testcontainers")
 
 	testRuntimeOnly("ch.qos.logback:logback-classic")
 	testRuntimeOnly("io.projectreactor.netty:reactor-netty-http")

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/neo4j/Neo4jReactiveHealthIndicatorIntegrationTests.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2012-2022 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.boot.actuate.neo4j;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Test;
+import org.testcontainers.containers.Neo4jContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.actuate.health.Health;
+import org.springframework.boot.actuate.health.Status;
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.boot.autoconfigure.neo4j.Neo4jAutoConfiguration;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.testsupport.testcontainers.DockerImageNames;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for {@link Neo4jReactiveHealthIndicator}.
+ *
+ * @author Phillip Webb
+ */
+@SpringBootTest
+@Testcontainers(disabledWithoutDocker = true)
+public class Neo4jReactiveHealthIndicatorIntegrationTests {
+
+	// gh-33428
+
+	@Container
+	private static final Neo4jContainer<?> neo4jServer = new Neo4jContainer<>(DockerImageNames.neo4j())
+			.withStartupAttempts(5).withStartupTimeout(Duration.ofMinutes(10));
+
+	@DynamicPropertySource
+	static void neo4jProperties(DynamicPropertyRegistry registry) {
+		registry.add("spring.neo4j.uri", neo4jServer::getBoltUrl);
+		registry.add("spring.neo4j.authentication.username", () -> "neo4j");
+		registry.add("spring.neo4j.authentication.password", neo4jServer::getAdminPassword);
+	}
+
+	@Autowired
+	private Neo4jReactiveHealthIndicator healthIndicator;
+
+	@Test
+	void health() {
+		Health health = this.healthIndicator.getHealth(true).block(Duration.ofSeconds(5));
+		assertThat(health.getStatus()).isEqualTo(Status.UP);
+		assertThat(health.getDetails()).containsEntry("edition", "community");
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@ImportAutoConfiguration(Neo4jAutoConfiguration.class)
+	@Import(Neo4jReactiveHealthIndicator.class)
+	static class TestConfiguration {
+
+	}
+
+}