Examples of de.danielbechler.diff.node.DiffNode

de.danielbechler.diff.node.DiffNode
Represents a part of an object. It could be the object itself, one of its properties, an item in a collection or a map entry. A node may have one parent node and any number of children. It also provides methods to read and write the property represented by this node on any object of the same type as the original object. Last but not least, a node knows how the associated property has changed compared to the base object. @author Daniel Bechler

    working.put("foo", "bar");


    final Map<String, String> base = new LinkedHashMap<String, String>(1);
    base.put("foo", "woot");


    final DiffNode node = ObjectDifferBuilder.buildDefault().compare(working, base);
    NodeAssertions.assertThat(node).self().hasChildren(1);
    NodeAssertions.assertThat(node).child(new MapKeyElementSelector("foo")).hasState(DiffNode.State.CHANGED);
  }

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  public void testCompareWithDifferentMapImplementationsSucceeds() throws Exception
  {
    final Map<String, String> base = new LinkedHashMap<String, String>(Collections.singletonMap("test", "foo"));
    final Map<String, String> working = new TreeMap<String, String>(Collections.singletonMap("test", "bar"));


    final DiffNode node = ObjectDifferBuilder.buildDefault().compare(working, base);


    NodeAssertions.assertThat(node).self().hasState(DiffNode.State.CHANGED);
  }

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  }


  @Test(groups = INTEGRATION)
  public void testCompareWithDifferentStrings() throws Exception
  {
    final DiffNode node = ObjectDifferBuilder.buildDefault().compare("foo", "bar");


    assertThat(node).self().hasState(DiffNode.State.CHANGED);
  }

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        .filtering().returnNodesWithState(DiffNode.State.IGNORED).and()
        .build();


    final ObjectWithIdentityAndValue working = new ObjectWithIdentityAndValue("1", "foo");
    final ObjectWithIdentityAndValue base = new ObjectWithIdentityAndValue("1", "bar");
    final DiffNode node = objectDiffer.compare(working, base);


    NodeAssertions.assertThat(node).child("value").hasState(DiffNode.State.IGNORED);
  }

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//    when(delegate.delegate(any(Node.class), any(Instances.class))).thenReturn(node);
//    when(configuration.isIntrospectible(any(Node.class))).thenReturn(true);
//    when(configuration.isReturnable(any(Node.class))).thenReturn(true);
//    when(node.hasChanges()).thenReturn(true);


    final DiffNode node = ObjectDifferBuilder.buildDefault().compare(
        new ObjectWithIdentityAndValue("a", "1"),
        new ObjectWithIdentityAndValue("a", "2"));


    assertThat(node).self().hasState(DiffNode.State.CHANGED);
  }

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  @Test(enabled = false, description = "Currently this is simply not possible because of the way, the CollectionItemAccessor works. Would be great, to support this.")
  public void testCompareWithListContainingObjectTwiceDetectsIfOneGetsRemoved() throws Exception
  {
    final List<ObjectWithHashCodeAndEquals> base = asList(new ObjectWithHashCodeAndEquals("foo"), new ObjectWithHashCodeAndEquals("foo"));
    final List<ObjectWithHashCodeAndEquals> working = asList(new ObjectWithHashCodeAndEquals("foo"));
    final DiffNode node = ObjectDifferBuilder.buildDefault().compare(working, base);
    node.visit(new NodeHierarchyVisitor());
    assertThat(node)
        .child(NodePath.startBuilding()
            .collectionItem(new ObjectWithHashCodeAndEquals("foo"))
            .build())
        .hasState(DiffNode.State.REMOVED);

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  @Test(enabled = false, description = "Currently this is simply not possible because of the way, the CollectionItemAccessor works. Would be great, to support this.")
  public void testCompareWithListContainingObjectOnceDetectsIfAnotherInstanceOfItGetsAdded() throws Exception
  {
    final List<ObjectWithHashCodeAndEquals> base = asList(new ObjectWithHashCodeAndEquals("foo"));
    final List<ObjectWithHashCodeAndEquals> working = asList(new ObjectWithHashCodeAndEquals("foo"), new ObjectWithHashCodeAndEquals("foo"));
    final DiffNode node = ObjectDifferBuilder.buildDefault().compare(working, base);
    node.visit(new NodeHierarchyVisitor());
    assertThat(node).child(NodePath.startBuilding()
        .collectionItem(new ObjectWithHashCodeAndEquals("foo"))
        .build()).hasState(DiffNode.State.ADDED);
  }

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    final List<String> forBase = new ArrayList<String>();
    forBase.add("uno");
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection working = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection(forWorking);
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection base = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection(forBase);


    final DiffNode node = objectDiffer.compare(working, base);


    NodeAssertions.assertThat(node).self().hasState(DiffNode.State.UNTOUCHED);
    NodeAssertions.assertThat(node).self().hasNoChildren();
  }

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    final List<String> forBase = new ArrayList<String>();
    forBase.add("uno");
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection working = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection(forWorking);
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection base = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetCollection(forBase);


    final DiffNode node = objectDiffer.compare(working, base);


    NodeAssertions.assertThat(node).self().hasState(DiffNode.State.CHANGED);
    assertThat(node)
        .child(NodePath.with("collection"))
        .hasState(DiffNode.State.CHANGED);

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    final ObjectWithNestedObject forBase = new ObjectWithNestedObject("childid");
    forBase.setObject(new ObjectWithNestedObject("differentgrandchildid"));
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetNestedObject working = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetNestedObject("id", forWorking);
    final ObjectWithMethodEqualsOnlyValueProviderMethodOnGetNestedObject base = new ObjectWithMethodEqualsOnlyValueProviderMethodOnGetNestedObject("id", forBase);


    final DiffNode node = objectDiffer.compare(working, base);


    NodeAssertions.assertThat(node).self().hasState(DiffNode.State.UNTOUCHED);
    NodeAssertions.assertThat(node).self().hasNoChildren();
  }

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Related Classes of de.danielbechler.diff.node.DiffNode

de.danielbechler.diff.differ.BeanDiffer

de.danielbechler.diff.differ.BeanDifferShould

de.danielbechler.diff.differ.CollectionDiffer

de.danielbechler.diff.differ.DifferDispatcher

de.danielbechler.diff.differ.DifferDispatcherShould

de.danielbechler.diff.differ.MapDiffer

de.danielbechler.diff.differ.PrimitiveDiffer

de.danielbechler.diff.differ.PrimitiveDifferTest

de.danielbechler.diff.example.CanonicalAccessorExample

de.danielbechler.diff.example.EqualsOnlyValueProviderMethodExample

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