@Test
public void testInstanceFactoryMethodWithoutArgs() {
DefaultListableBeanFactory xbf = new DefaultListableBeanFactory();
XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(xbf);
reader.loadBeanDefinitions(new ClassPathResource("factory-methods.xml", getClass()));
InstanceFactory.count = 0;
xbf.preInstantiateSingletons();
assertEquals(1, InstanceFactory.count);
FactoryMethods fm = (FactoryMethods) xbf.getBean("instanceFactoryMethodWithoutArgs");
assertEquals("instanceFactory", fm.getTestBean().getName());
assertEquals(1, InstanceFactory.count);
FactoryMethods fm2 = (FactoryMethods) xbf.getBean("instanceFactoryMethodWithoutArgs");
assertEquals("instanceFactory", fm2.getTestBean().getName());
assertSame(fm2, fm);
assertEquals(1, InstanceFactory.count);
}
@Test
public void testFactoryMethodWithDifferentReturnType() {
DefaultListableBeanFactory xbf = new DefaultListableBeanFactory();
XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(xbf);
reader.loadBeanDefinitions(new ClassPathResource("factory-methods.xml", getClass()));
// Check that listInstance is not considered a bean of type FactoryMethods.
assertTrue(List.class.isAssignableFrom(xbf.getType("listInstance")));
String[] names = xbf.getBeanNamesForType(FactoryMethods.class);
assertTrue(!Arrays.asList(names).contains("listInstance"));
names = xbf.getBeanNamesForType(List.class);
assertTrue(Arrays.asList(names).contains("listInstance"));
xbf.preInstantiateSingletons();
assertTrue(List.class.isAssignableFrom(xbf.getType("listInstance")));
names = xbf.getBeanNamesForType(FactoryMethods.class);
assertTrue(!Arrays.asList(names).contains("listInstance"));
names = xbf.getBeanNamesForType(List.class);
assertTrue(Arrays.asList(names).contains("listInstance"));
List<?> list = (List<?>) xbf.getBean("listInstance");
assertEquals(Collections.EMPTY_LIST, list);
}
