Log failing calls to health indicators

See gh-33774

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/AbstractReactiveHealthIndicatorTests.java

@@ -0,0 +1,118 @@
+/*
+ * Copyright 2012-2019 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.health;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import reactor.core.publisher.Mono;
+
+import org.springframework.boot.actuate.health.Health.Builder;
+import org.springframework.boot.test.system.CapturedOutput;
+import org.springframework.boot.test.system.OutputCaptureExtension;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link AbstractReactiveHealthIndicator}.
+ *
+ * @author Moritz Halbritter
+ */
+@ExtendWith(OutputCaptureExtension.class)
+class AbstractReactiveHealthIndicatorTests {
+
+	@Test
+	void healthCheckWhenUpDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator("Test message") {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				return Mono.just(builder.up().build());
+			}
+
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.UP);
+		assertThat(output).doesNotContain("Test message");
+	}
+
+	@Test
+	void healthCheckWhenDownWithExceptionThrownDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator("Test message") {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				throw new IllegalStateException("Test exception");
+			}
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		assertThat(output).contains("Test message").contains("Test exception");
+	}
+
+	@Test
+	void healthCheckWhenDownWithExceptionConfiguredDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator("Test message") {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				return Mono.just(builder.down().withException(new IllegalStateException("Test exception")).build());
+			}
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		assertThat(output).contains("Test message").contains("Test exception");
+	}
+
+	@Test
+	void healthCheckWhenDownWithExceptionConfiguredDoesNotLogHealthCheckFailedMessageTwice(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator("Test message") {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				IllegalStateException ex = new IllegalStateException("Test exception");
+				builder.down().withException(ex);
+				throw ex;
+			}
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		assertThat(output).contains("Test message").containsOnlyOnce("Test exception");
+	}
+
+	@Test
+	void healthCheckWhenDownWithExceptionAndNoFailureMessageLogsDefaultMessage(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator() {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				return Mono.just(builder.down().withException(new IllegalStateException("Test exception")).build());
+			}
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		assertThat(output).contains("Health check failed").contains("Test exception");
+	}
+
+	@Test
+	void healthCheckWhenDownWithErrorLogsDefaultMessage(CapturedOutput output) {
+		Health health = new AbstractReactiveHealthIndicator("Test Message") {
+			@Override
+			protected Mono<Health> doHealthCheck(Builder builder) {
+				return Mono.just(builder.down().withException(new Error("Test error")).build());
+			}
+		}.health().block();
+		assertThat(health).isNotNull();
+		assertThat(health.getStatus()).isEqualTo(Status.DOWN);
+		assertThat(output).contains("Health check failed").contains("Test error");
+	}
+
+}