/*
    * Grapht, an open source dependency injector.
    * Copyright 2014-2015 various contributors (see CONTRIBUTORS.txt)
    * Copyright 2010-2014 Regents of the University of Minnesota
    *
    * This program is free software; you can redistribute it and/or modify
    * it under the terms of the GNU Lesser General Public License as
    * published by the Free Software Foundation; either version 2.1 of the
    * License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
   * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
   * details.
   *
   * You should have received a copy of the GNU General Public License along with
   * this program; if not, write to the Free Software Foundation, Inc., 51
   * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   */
  package org.grouplens.grapht;
  
  import org.grouplens.grapht.types.dft.*;
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.hamcrest.Matchers.*;
  import static org.junit.Assert.assertThat;
  
  /**
   * Acceptance tests for default bindings (via annotations and such). This may well have
   * overlap with some other test cases, but consolidates various expected default behavior in one
   * place.
   */
  public class DefaultBindingsTest {
      private InjectorBuilder b;
      // TODO Add tests here for DefaultInt and friends
  
      @Before
      public void setup() {
          b = InjectorBuilder.create(DefaultBindingsTest.class.getClassLoader());
      }
  
      @Test
      public void testDefaultImplementation() throws InjectionException {
          Injector inj = b.build();
          IDftImpl a = inj.getInstance(IDftImpl.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(CDftImplA.class));
      }
  
      @Test
      public void testOverrideDefaultImplementation() throws InjectionException {
          b.bind(IDftImpl.class).to(CDftImplB.class);
          Injector inj = b.build();
          IDftImpl a = inj.getInstance(IDftImpl.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(CDftImplB.class));
      }
  
      @Test
      public void testDefaultProvider() throws InjectionException {
          Injector inj = b.build();
          IDftProvider a = inj.getInstance(IDftProvider.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(PDftProvider.Impl.class));
      }
  
      @Test
      public void testOverrideDefaultProvider() throws InjectionException {
          b.bind(IDftProvider.class).to(CDftProvider.class);
          Injector inj = b.build();
          IDftProvider a = inj.getInstance(IDftProvider.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(CDftProvider.class));
      }
  
      @Test
      public void testPropDefaultImplementation() throws InjectionException {
          Injector inj = b.build();
          IPropDftImpl a = inj.getInstance(IPropDftImpl.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(CPropDftImplA.class));
      }
  
      @Test
      public void testPropOverrideDefaultImplementation() throws InjectionException {
          b.bind(IPropDftImpl.class).to(CPropDftImplB.class);
          Injector inj = b.build();
          IPropDftImpl a = inj.getInstance(IPropDftImpl.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(CPropDftImplB.class));
      }
  
      @Test
      public void testPropDefaultProvider() throws InjectionException {
          Injector inj = b.build();
          IPropDftProvider a = inj.getInstance(IPropDftProvider.class);
          assertThat(a, notNullValue());
          assertThat(a, instanceOf(PPropDftProvider.Impl.class));
     }
 
     @Test
     public void testPropOverrideDefaultProvider() throws InjectionException {
         b.bind(IPropDftProvider.class).to(CPropDftProvider.class);
         Injector inj = b.build();
         IPropDftProvider a = inj.getInstance(IPropDftProvider.class);
         assertThat(a, notNullValue());
         assertThat(a, instanceOf(CPropDftProvider.class));
     }
 
     @Test
     public void testPropImplDoubleDepCache() throws InjectionException {
         Injector inj = b.build();
         CPropImplDoubleDep obj = inj.getInstance(CPropImplDoubleDep.class);
         assertThat(obj.right, sameInstance(obj.left));
     }
 
     @Test
     public void testPropImplDoubleDepUncache() throws InjectionException {
         b.setDefaultCachePolicy(CachePolicy.NEW_INSTANCE);
         Injector inj = b.build();
         CPropImplDoubleDep obj = inj.getInstance(CPropImplDoubleDep.class);
         assertThat(obj.right, not(sameInstance(obj.left)));
     }
 
     @Test
     public void testPropImplDoubleDepPropUncache() throws InjectionException {
         Injector inj = b.build();
         CPropImplDoubleDepNoCache obj = inj.getInstance(CPropImplDoubleDepNoCache.class);
         assertThat(obj.right, not(sameInstance(obj.left)));
     }
 
     @Test
     public void testDftImplDoubleDepCache() throws InjectionException {
         Injector inj = b.build();
         CDoubleDep obj = inj.getInstance(CDoubleDep.class);
         assertThat(obj.right, sameInstance(obj.left));
     }
 
     @Test
     public void testDftImplDoubleDepUncache() throws InjectionException {
         b.setDefaultCachePolicy(CachePolicy.NEW_INSTANCE);
         Injector inj = b.build();
         CDoubleDep obj = inj.getInstance(CDoubleDep.class);
         assertThat(obj.right, not(sameInstance(obj.left)));
     }
 
     @Test
     public void testDftImplDoubleDepPropUncache() throws InjectionException {
         Injector inj = b.build();
         CDoubleDepNoCache obj = inj.getInstance(CDoubleDepNoCache.class);
         assertThat(obj.right, not(sameInstance(obj.left)));
     }
 
     /**
      * Test that the DefaultImplementation annotation overrides META-INF.
      */
     @Test
     public void testPreemptDefaultImplementation() throws InjectionException {
         Injector inj = b.build();
         IPreemptDftImpl a = inj.getInstance(IPreemptDftImpl.class);
         assertThat(a, notNullValue());
         assertThat(a, instanceOf(CPreemptDftImplA.class));
     }
 }