Add tests for TraceWebServletAutoConfiguration

spring-cloud-sleuth-core/src/test/java/org/springframework/cloud/sleuth/instrument/web/TraceWebServletAutoConfigurationTests.java

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+/*
+ * Copyright 2013-2018 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
+ *
+ *      http://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.cloud.sleuth.instrument.web;
+
+import org.junit.Test;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
+import org.springframework.cloud.sleuth.autoconfig.TraceAutoConfiguration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Michał Ziemba
+ */
+public class TraceWebServletAutoConfigurationTests {
+
+	private static final String EXCEPTION_LOGGING_FILTER_BEAN_NAME = "exceptionThrowingFilter";
+
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(
+					TraceAutoConfiguration.class,
+					TraceHttpAutoConfiguration.class,
+					TraceWebAutoConfiguration.class,
+					TraceWebServletAutoConfiguration.class
+			));
+
+	@Test
+	public void shouldCreateExceptionLoggingFilterBeanByDefault() {
+		this.contextRunner
+				.run((context) -> {
+					assertThat(context).hasBean(EXCEPTION_LOGGING_FILTER_BEAN_NAME);
+				});
+	}
+
+	@Test
+	public void shouldCreateExceptionLoggingFilterBeanIfExplicitlyEnabled() {
+		this.contextRunner
+				.withPropertyValues("spring.sleuth.web.exception-throwing-filter-enabled=true")
+				.run((context) -> {
+					assertThat(context).hasBean(EXCEPTION_LOGGING_FILTER_BEAN_NAME);
+				});
+	}
+
+	@Test
+	public void shouldNotCreateExceptionLoggingFilterBeanIfDisabledInProperties() {
+		this.contextRunner
+				.withPropertyValues("spring.sleuth.web.exception-throwing-filter-enabled=false")
+				.run((context) -> {
+					assertThat(context).doesNotHaveBean(EXCEPTION_LOGGING_FILTER_BEAN_NAME);
+				});
+	}
+
+	@Test
+	public void shouldNotCreateExceptionLoggingFilterBeanIfDisabledInPropertiesUsingCamelCase() {
+		this.contextRunner
+				.withPropertyValues("spring.sleuth.web.exceptionThrowingFilterEnabled=false")
+				.run((context) -> {
+					assertThat(context).doesNotHaveBean(EXCEPTION_LOGGING_FILTER_BEAN_NAME);
+				});
+	}
+}