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  package org.apache.cayenne.di.spi;
  
  import org.apache.cayenne.di.BeforeScopeEnd;
  import org.apache.cayenne.di.Module;
  import org.apache.cayenne.di.mock.MockImplementation1;
  import org.apache.cayenne.di.mock.MockImplementation1_EventAnnotations;
  import org.apache.cayenne.di.mock.MockImplementation1_Provider;
  import org.apache.cayenne.di.mock.MockInterface1;
  import org.junit.Test;
  
  import static org.junit.Assert.*;
  
  public class DefaultInjectorScopeTest {
  
      @Test
      public void testDefaultScope_IsSingleton() {
  
          Module module = binder -> binder.bind(MockInterface1.class).to(MockImplementation1.class);
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance2 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance3 = injector.getInstance(MockInterface1.class);
  
          assertNotNull(instance1);
          assertNotNull(instance2);
          assertNotNull(instance3);
  
          assertSame(instance1, instance2);
          assertSame(instance2, instance3);
      }
  
      @Test
      public void testNoScope() {
  
          Module module = binder -> binder
                  .bind(MockInterface1.class)
                  .to(MockImplementation1.class)
                  .withoutScope();
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance2 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance3 = injector.getInstance(MockInterface1.class);
  
          assertNotNull(instance1);
          assertNotNull(instance2);
          assertNotNull(instance3);
  
          assertNotSame(instance1, instance2);
          assertNotSame(instance2, instance3);
          assertNotSame(instance3, instance1);
      }
  
      @Test
      public void testSingletonScope() {
  
          Module module = binder -> binder
                  .bind(MockInterface1.class)
                  .to(MockImplementation1.class)
                  .inSingletonScope();
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance2 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance3 = injector.getInstance(MockInterface1.class);
  
          assertNotNull(instance1);
          assertNotNull(instance2);
          assertNotNull(instance3);
  
          assertSame(instance1, instance2);
          assertSame(instance2, instance3);
      }
  
      @Test
      public void testSingletonScope_AnnotatedEvents() {
  
          MockImplementation1_EventAnnotations.reset();
  
          Module module = binder -> binder.bind(MockInterface1.class).to(
                  MockImplementation1_EventAnnotations.class).inSingletonScope();
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          assertEquals("XuI", instance1.getName());
  
          assertFalse(MockImplementation1_EventAnnotations.shutdown1);
          assertFalse(MockImplementation1_EventAnnotations.shutdown2);
          assertFalse(MockImplementation1_EventAnnotations.shutdown3);
  
          injector.getSingletonScope().postScopeEvent(BeforeScopeEnd.class);
  
          assertTrue(MockImplementation1_EventAnnotations.shutdown1);
          assertTrue(MockImplementation1_EventAnnotations.shutdown2);
          assertTrue(MockImplementation1_EventAnnotations.shutdown3);
      }
  
      @Test
      public void testSingletonScope_WithProvider() {
  
          Module module = binder -> binder
                  .bind(MockInterface1.class)
                  .toProvider(MockImplementation1_Provider.class)
                  .inSingletonScope();
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance2 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance3 = injector.getInstance(MockInterface1.class);
  
          assertNotNull(instance1);
          assertNotNull(instance2);
          assertNotNull(instance3);
  
          assertSame(instance1, instance2);
          assertSame(instance2, instance3);
      }
  
      @Test
      public void testNoScope_WithProvider() {
  
          Module module = binder -> binder
                  .bind(MockInterface1.class)
                  .toProvider(MockImplementation1_Provider.class).withoutScope();
  
          DefaultInjector injector = new DefaultInjector(module);
  
          MockInterface1 instance1 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance2 = injector.getInstance(MockInterface1.class);
          MockInterface1 instance3 = injector.getInstance(MockInterface1.class);
  
          assertNotNull(instance1);
          assertNotNull(instance2);
          assertNotNull(instance3);
  
          assertNotSame(instance1, instance2);
          assertNotSame(instance2, instance3);
      }
  }
  