test: Add unit test for #40342

Author: itsAkshayDubey

spring-boot-project/spring-boot-devtools/src/test/java/org/springframework/boot/devtools/autoconfigure/LocalDevToolsAutoConfigurationTests.java

@@ -37,6 +37,7 @@
 import org.springframework.boot.autoconfigure.web.WebProperties;
 import org.springframework.boot.autoconfigure.web.WebProperties.Resources;
 import org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration;
+import org.springframework.boot.devtools.autoconfigure.LocalDevToolsAutoConfiguration.LiveReloadForAdditionalPaths;
 import org.springframework.boot.devtools.classpath.ClassPathChangedEvent;
 import org.springframework.boot.devtools.classpath.ClassPathFileSystemWatcher;
 import org.springframework.boot.devtools.livereload.LiveReloadServer;
@@ -70,6 +71,7 @@
  * @author Phillip Webb
  * @author Andy Wilkinson
  * @author Vladimir Tsanev
+ * @author Akshay Dubey
  */
 @ExtendWith(MockRestarter.class)
 class LocalDevToolsAutoConfigurationTests {
@@ -213,6 +215,20 @@ void watchingAdditionalPaths() throws Exception {
 			.containsKey(new File("src/test/java").getAbsoluteFile());
 	}
 
+	@Test
+ 	void watchingAdditionalPathsForReload() throws Exception {
+  		Map<String, Object> properties = new HashMap<>();
+  		properties.put("spring.devtools.livereload.additional-paths", "src/main/java,src/test/java");
+  		this.context = getContext(() -> initializeAndRun(Config.class, properties));
+  		LiveReloadForAdditionalPaths liveReloadForAdditionalPaths = this.context.getBean(LiveReloadForAdditionalPaths.class);
+  		Object watcher = ReflectionTestUtils.getField(liveReloadForAdditionalPaths, "fileSystemWatcher");
+  		@SuppressWarnings("unchecked")
+  		Map<File, Object> directories = (Map<File, Object>) ReflectionTestUtils.getField(watcher, "directories");
+  		assertThat(directories).hasSize(2)
+    		.containsKey(new File("src/main/java").getAbsoluteFile())
+    		.containsKey(new File("src/test/java").getAbsoluteFile());
+ 	}
+
 	@Test
 	void devToolsSwitchesJspServletToDevelopmentMode() throws Exception {
 		this.context = getContext(() -> initializeAndRun(Config.class));