Unit test for JavaBeans introspection against FreeMarker Configuration class

Issue: SPR-12448
(cherry picked from commit 282aded)

Author: jhoeller

spring-webmvc/src/test/java/org/springframework/web/servlet/view/freemarker/FreeMarkerConfigurerTests.java

@@ -20,19 +20,21 @@
 import java.util.HashMap;
 import java.util.Properties;
 
+import freemarker.template.Configuration;
+import freemarker.template.Template;
 import org.junit.Test;
 
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.core.io.ByteArrayResource;
+import org.springframework.core.io.DefaultResourceLoader;
 import org.springframework.core.io.FileSystemResource;
 import org.springframework.core.io.Resource;
 import org.springframework.core.io.ResourceLoader;
 import org.springframework.ui.freemarker.FreeMarkerConfigurationFactoryBean;
 import org.springframework.ui.freemarker.FreeMarkerTemplateUtils;
 import org.springframework.ui.freemarker.SpringTemplateLoader;
 
-import freemarker.template.Configuration;
-import freemarker.template.Template;
-
 import static org.hamcrest.Matchers.*;
 import static org.junit.Assert.*;
 
@@ -43,7 +45,7 @@
 public class FreeMarkerConfigurerTests {
 
 	@Test(expected = IOException.class)
-	public void freemarkerConfigurationFactoryBeanWithConfigLocation() throws Exception {
+	public void freeMarkerConfigurationFactoryBeanWithConfigLocation() throws Exception {
 		FreeMarkerConfigurationFactoryBean fcfb = new FreeMarkerConfigurationFactoryBean();
 		fcfb.setConfigLocation(new FileSystemResource("myprops.properties"));
 		Properties props = new Properties();
@@ -63,22 +65,20 @@ public void freeMarkerConfigurationFactoryBeanWithResourceLoaderPath() throws Ex
 
 	@Test
 	@SuppressWarnings("rawtypes")
-	public void freemarkerConfigurationFactoryBeanWithNonFileResourceLoaderPath() throws Exception {
+	public void freeMarkerConfigurationFactoryBeanWithNonFileResourceLoaderPath() throws Exception {
 		FreeMarkerConfigurationFactoryBean fcfb = new FreeMarkerConfigurationFactoryBean();
 		fcfb.setTemplateLoaderPath("file:/mydir");
 		Properties settings = new Properties();
 		settings.setProperty("localized_lookup", "false");
 		fcfb.setFreemarkerSettings(settings);
 		fcfb.setResourceLoader(new ResourceLoader() {
-
 			@Override
 			public Resource getResource(String location) {
 				if (!("file:/mydir".equals(location) || "file:/mydir/test".equals(location))) {
 					throw new IllegalArgumentException(location);
 				}
 				return new ByteArrayResource("test".getBytes(), "test");
 			}
-
 			@Override
 			public ClassLoader getClassLoader() {
 				return getClass().getClassLoader();
@@ -91,4 +91,16 @@ public ClassLoader getClassLoader() {
 		assertEquals("test", FreeMarkerTemplateUtils.processTemplateIntoString(ft, new HashMap()));
 	}
 
+	@Test  // SPR-12448
+	public void freeMarkerConfigurationAsBean() {
+		DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
+		RootBeanDefinition loaderDef = new RootBeanDefinition(SpringTemplateLoader.class);
+		loaderDef.getConstructorArgumentValues().addGenericArgumentValue(new DefaultResourceLoader());
+		loaderDef.getConstructorArgumentValues().addGenericArgumentValue("/freemarker");
+		RootBeanDefinition configDef = new RootBeanDefinition(Configuration.class);
+		configDef.getPropertyValues().add("templateLoader", loaderDef);
+		beanFactory.registerBeanDefinition("freeMarkerConfig", configDef);
+		beanFactory.getBean(Configuration.class);
+	}
+
 }