java - getBeansOfType(Class<T> type) -

i trying write junit 1 of api, within api have used map below:

map<string, t> beansmap = ctx.getbeansoftype(clazz); 

where

ctx = org.springframework.context.applicationcontext clazz = class<t> 

i need mock ctx.getbeansoftype(clazz) , return of map<spring, t> not able it.

in general it's considered bad practice retrieve beans directly applicationcontext, it's introduces coupling. see why https://stackoverflow.com/a/9663099/6604329.

using field, constructor or lookup-method injection eliminate need mocking applicationcontext.

any way, here how can mock applicationcontext.getbeansoftype(clazz)

import org.junit.test; import org.mockito.mockito; import org.mockito.invocation.invocationonmock; import org.mockito.stubbing.answer; import org.springframework.context.applicationcontext;  import java.util.hashmap; import java.util.map;  import static org.junit.assert.assertfalse; import static org.mockito.matchers.any; import static org.mockito.mockito.mock; import static org.mockito.mockito.when;  /**  * @author mponomarev  */ public class apitest {     @test     public void testsomething() throws exception {         applicationcontext applicationcontext = mock( applicationcontext.class );         final map beans = new hashmap();          when( applicationcontext.getbeansoftype( any( class.class ) ) )           .thenanswer( new answer<map<string,object>>() {               @override               public map<string,object> answer( invocationonmock invocation )                 throws throwable {                   class clazz = invocation.getargumentat( 0, class.class );                   beans.put( "beanname", mock( clazz ) );                   return beans;               }           } );          api api = new api( applicationcontext );         api.perform();          assertfalse( "beans shouldn't empty", beans.isempty() );         for( object o : beans.values() ) {             component component = (component)o;             mockito.verify( component ).dosomething();         }     }      public static class api {         private final map<string,component> components;          api( applicationcontext applicationcontext ) {             this.components = applicationcontext.getbeansoftype( component.class );         }          void perform() {             for( component component : components.values() ) {                 component.dosomething();             }         }     }      public interface component {         void dosomething();     } }