public void NameShouldBeKeptWhenCreatingNameableDataItem()
{
var dataObject = new CloneableClassWithThreeProperties {
Name = "OldName"
};
var dataItem = new DataItem(dataObject);
Assert.AreEqual("OldName", dataItem.Name);
}
public void DataItemNameShouldChangeWhenNamedValueNameChanges()
{
IDataItem dataItem = new DataItem {
Name = "Hoi"
};
//assign a nameble value.
CloneableClassWithThreeProperties cloneableClassWithThreeProperties = new CloneableClassWithThreeProperties {
Name = "Dag"
};
dataItem.Value = cloneableClassWithThreeProperties;
cloneableClassWithThreeProperties.Name = "huh";
Assert.AreEqual("huh", dataItem.Name);
}
public void NameShouldChangeWhenSettingValueWithANamedValue()
{
IDataItem dataItem = new DataItem {
Name = "Hoi"
};
//assign a nameble value.
CloneableClassWithThreeProperties cloneableClassWithThreeProperties = new CloneableClassWithThreeProperties {
Name = "Dag"
};
Assert.IsNotNull(cloneableClassWithThreeProperties as INameable);
dataItem.Value = cloneableClassWithThreeProperties;
Assert.AreEqual("Dag", dataItem.Name);
}
public void CloneShouldNotCausePropertyChangeOnSourceValue()
{
//set a nameable property changing class in the dataItem
var propertyChangingClass = new CloneableClassWithThreeProperties();
var dataItem = new DataItem(propertyChangingClass);
propertyChangingClass.PropertyChanged += delegate
{
Assert.Fail("Clone should not cause a change in the source!");
};
//action clone the dataitem.
dataItem.DeepClone();
}
public void CreateContainingObjectValue()
{
var dataObject = new CloneableClassWithThreeProperties {
Name = "b"
};
var data = new DataItem(dataObject, "a");
Assert.AreEqual(dataObject, data.Value);
Assert.AreEqual("a", data.Name);
Assert.AreEqual(typeof(CloneableClassWithThreeProperties), data.ValueType);
Assert.AreEqual(DataItem.DefaultRole, data.Role);
Assert.AreEqual(null, data.Owner);
Assert.AreEqual(0, data.Id);
Assert.AreEqual(0, data.LinkedBy.Count);
Assert.AreEqual(null, data.LinkedTo);
}
public void LinkAndUnlinkTwoDataItems()
{
var dataObject1 = new CloneableClassWithThreeProperties();
var dataObject2 = new CloneableClassWithThreeProperties();
var dataItem1 = new DataItem(dataObject1, "a1");
var dataItem2 = new DataItem(dataObject2, "a2");
dataItem2.LinkTo(dataItem1);
Assert.IsTrue(dataItem2.IsLinked);
Assert.AreSame(dataItem1, dataItem2.LinkedTo);
Assert.AreSame(dataItem2, dataItem1.LinkedBy[0]);
dataItem2.Unlink();
Assert.AreEqual(null, dataItem2.LinkedTo);
Assert.AreEqual(0, dataItem1.LinkedBy.Count);
}
public void PropertyChangedWorkOnLinkedItems()
{
var propertyChangedClass = new CloneableClassWithThreeProperties();
var sourceDataItem = new DataItem(propertyChangedClass);
var linkedDataItem = new DataItem(new CloneableClassWithThreeProperties());
linkedDataItem.LinkTo(sourceDataItem);
int callCount = 0;
((INotifyPropertyChanged)linkedDataItem).PropertyChanged += (s, e) =>
{
callCount++;
Assert.AreEqual(propertyChangedClass, s);
Assert.AreEqual("StringProperty", e.PropertyName);
};
propertyChangedClass.StringProperty = "newName";
Assert.AreEqual(1, callCount);
}
public void NameShouldChangeWhenLinkedNamedValueNameChanges()
{
var dataObject1 = new CloneableClassWithThreeProperties();
var dataObject2 = new CloneableClassWithThreeProperties();
var dataItem1 = new DataItem(dataObject1, "name1");
var dataItem2 = new DataItem(dataObject2, "name2");
dataItem2.LinkTo(dataItem1);
Assert.AreEqual("name1", dataItem1.Name);
Assert.AreEqual("name2", dataItem2.Name, "name of the target data item remains the same after linking");
Assert.AreEqual("name1", ((INameable)dataItem1.Value).Name);
Assert.AreEqual("name1", ((INameable)dataItem2.Value).Name);
dataObject2.Name = "newName2";
Assert.AreEqual("name1", ((INameable)dataItem1.Value).Name);
Assert.AreEqual("name1", ((INameable)dataItem2.Value).Name);
dataObject1.Name = "newName1";
Assert.AreEqual("newName1", ((INameable)dataItem1.Value).Name);
Assert.AreEqual("newName1", ((INameable)dataItem2.Value).Name);
dataItem2.Unlink();
// unlinking results in a new object of the original type as Value in the
// item with an uninitialized name.
// The original dataObject2 is now an orphan.
Assert.AreEqual("newName1", ((INameable)dataItem1.Value).Name);
Assert.AreEqual("newName1", ((INameable)dataItem2.Value).Name); // item was linked to newName1
((INameable)dataItem2.Value).Name = "newerName2";
Assert.AreEqual("newerName2", dataItem2.Name);
dataItem2.Name = "weereensietsanders";
Assert.AreEqual("weereensietsanders", ((INameable)dataItem2.Value).Name);
}