Do not reset server.port if a custom inline property is set

This commit allows to define `server.port` in a non-embedded web
environment. Previously, `server.port` would have been set to `-1`
regardless.

Closes gh-7353

spring-boot-test/src/main/java/org/springframework/boot/test/context/SpringBootContextLoader.java

@@ -21,10 +21,12 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 
 import org.springframework.beans.BeanUtils;
 import org.springframework.boot.SpringApplication;
+import org.springframework.boot.bind.RelaxedPropertyResolver;
 import org.springframework.boot.test.mock.web.SpringBootMockServletContext;
 import org.springframework.boot.test.util.EnvironmentTestUtils;
 import org.springframework.boot.web.support.ServletContextApplicationContextInitializer;
@@ -34,6 +36,9 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.core.SpringVersion;
 import org.springframework.core.annotation.AnnotatedElementUtils;
 import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.MapPropertySource;
+import org.springframework.core.env.MutablePropertySources;
+import org.springframework.core.env.PropertySourcesPropertyResolver;
 import org.springframework.core.env.StandardEnvironment;
 import org.springframework.core.io.DefaultResourceLoader;
 import org.springframework.test.context.ContextConfigurationAttributes;
@@ -65,6 +70,7 @@ import org.springframework.web.context.support.GenericWebApplicationContext;
  * @author Dave Syer
  * @author Phillip Webb
  * @author Andy Wilkinson
+ * @author Stephane Nicoll
  * @see SpringBootTest
  */
 public class SpringBootContextLoader extends AbstractContextLoader {
@@ -143,7 +149,7 @@ public class SpringBootContextLoader extends AbstractContextLoader {
 		// JMX bean names will clash if the same bean is used in multiple contexts
 		disableJmx(properties);
 		properties.addAll(Arrays.asList(config.getPropertySourceProperties()));
-		if (!isEmbeddedWebEnvironment(config)) {
+		if (!isEmbeddedWebEnvironment(config) && !hasCustomServerPort(properties)) {
 			properties.add("server.port=-1");
 		}
 		return properties.toArray(new String[properties.size()]);
@@ -153,6 +159,16 @@ public class SpringBootContextLoader extends AbstractContextLoader {
 		properties.add("spring.jmx.enabled=false");
 	}
 
+	private boolean hasCustomServerPort(List<String> properties) {
+		Map<String, Object> props = TestPropertySourceUtils.convertInlinedPropertiesToMap(
+				properties.toArray(new String[properties.size()]));
+		MutablePropertySources sources = new MutablePropertySources();
+		sources.addFirst(new MapPropertySource("inline", props));
+		RelaxedPropertyResolver resolver = new RelaxedPropertyResolver(
+				new PropertySourcesPropertyResolver(sources), "server.");
+		return resolver.containsProperty("port");
+	}
+
 	private List<ApplicationContextInitializer<?>> getInitializers(
 			MergedContextConfiguration config, SpringApplication application) {
 		List<ApplicationContextInitializer<?>> initializers = new ArrayList<ApplicationContextInitializer<?>>();

spring-boot-test/src/test/java/org/springframework/boot/test/context/SpringBootTestCustomPortTests.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2012-2016 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.boot.test.context;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.env.Environment;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Test for {@link SpringBootTest} with a custom inline server.port in a non-embedded
+ * web environment.
+ *
+ * @author Stephane Nicoll
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest(properties = "server.port=12345")
+public class SpringBootTestCustomPortTests {
+
+	@Autowired
+	private Environment environment;
+
+	@Test
+	public void validatePortIsNotOverwritten() {
+		String port = this.environment.getProperty("server.port");
+		assertThat(port).isEqualTo("12345");
+	}
+
+	@Configuration
+	protected static class Config {
+
+	}
+
+}

spring-boot-test/src/test/java/org/springframework/boot/test/context/SpringBootTestWebEnvironmentRandomPortCustomPortTests.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2012-2016 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.boot.test.context;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.AbstractSpringBootTestEmbeddedWebEnvironmentTests.AbstractConfig;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.env.Environment;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Test for {@link SpringBootTest} with a custom inline server.port in an embedded web
+ * environment.
+ *
+ * @author Stephane Nicoll
+ */
+@RunWith(SpringRunner.class)
+@DirtiesContext
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, properties = { "server.port=12345" })
+public class SpringBootTestWebEnvironmentRandomPortCustomPortTests {
+
+	@Autowired
+	private Environment environment;
+
+	@Test
+	public void validatePortIsNotOverwritten() {
+		String port = this.environment.getProperty("server.port");
+		assertThat(port).isEqualTo("0");
+	}
+
+	@Configuration
+	@EnableWebMvc
+	protected static class Config extends AbstractConfig {
+
+	}
+}