Nuclex.Support/Source/Collections/ParentingCollection.Test.cs

191 lines
6.1 KiB
C#
Raw Normal View History

#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2017 Nuclex Development Labs
This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.
This library 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
IBM Common Public License for more details.
You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion
using System;
using System.Collections.Generic;
#if UNITTEST
using NUnit.Framework;
namespace Nuclex.Support.Collections {
/// <summary>Unit Test for the Parenting Collection class</summary>
[TestFixture]
internal class ParentingCollectionTest {
#region class TestParentable
/// <summary>Parentable object that can be the child of an int</summary>
private class TestParentable : Parentable<int>, IDisposable {
/// <summary>Initializes a new instance of the parentable test class</summary>
public TestParentable() { }
/// <summary>The parent object that owns this instance</summary>
public int GetParent() {
return base.Parent;
}
/// <summary>Immediately releases all resources owned by the item</summary>
public void Dispose() {
this.disposeCalled = true;
}
/// <summary>Whether Dispose() has been called on this item</summary>
public bool DisposeCalled {
get { return this.disposeCalled; }
}
/// <summary>Whether Dispose() has been called on this item</summary>
private bool disposeCalled;
}
#endregion // class TestParentable
#region class TestParentingCollection
/// <summary>Parentable object that can be the child of an int</summary>
private class TestParentingCollection : ParentingCollection<int, TestParentable> {
/// <summary>Changes the parent of the collection</summary>
/// <param name="parent">New parent to assign to the collection</param>
public void SetParent(int parent) {
base.Reparent(parent);
}
/// <summary>Disposes all items contained in the collection</summary>
public new void DisposeItems() {
base.DisposeItems();
}
}
#endregion // class TestParentingCollection
/// <summary>
/// Tests whether the parenting collection propagates its parent to an item that
/// is added to the collection after the collection's aprent is already assigned
/// </summary>
[Test]
public void TestPropagatePreassignedParent() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable = new TestParentable();
testCollection.SetParent(54321);
testCollection.Add(testParentable);
Assert.AreEqual(54321, testParentable.GetParent());
}
/// <summary>
/// Tests whether the parenting collection propagates a new parent to all items
/// contained in it when its parent is changed
/// </summary>
[Test]
public void TestPropagateParentChange() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable = new TestParentable();
testCollection.Add(testParentable);
testCollection.SetParent(54321);
Assert.AreEqual(54321, testParentable.GetParent());
}
/// <summary>
/// Tests whether the parenting collection propagates its parent to an item that
/// is added to the collection after the collection's aprent is already assigned
/// </summary>
[Test]
public void TestPropagateParentOnReplace() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable1 = new TestParentable();
TestParentable testParentable2 = new TestParentable();
testCollection.SetParent(54321);
testCollection.Add(testParentable1);
testCollection[0] = testParentable2;
Assert.AreEqual(0, testParentable1.GetParent());
Assert.AreEqual(54321, testParentable2.GetParent());
}
/// <summary>
/// Tests whether the parenting collection unsets the parent when an item is removed
/// from the collection
/// </summary>
[Test]
public void TestUnsetParentOnRemoveItem() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable = new TestParentable();
testCollection.Add(testParentable);
testCollection.SetParent(54321);
Assert.AreEqual(54321, testParentable.GetParent());
testCollection.RemoveAt(0);
Assert.AreEqual(0, testParentable.GetParent());
}
/// <summary>
/// Tests whether the parenting collection unsets the parent when all item are
/// removed from the collection by clearing it
/// </summary>
[Test]
public void TestUnsetParentOnClear() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable = new TestParentable();
testCollection.Add(testParentable);
testCollection.SetParent(54321);
Assert.AreEqual(54321, testParentable.GetParent());
testCollection.Clear();
Assert.AreEqual(0, testParentable.GetParent());
}
/// <summary>
/// Tests whether the parenting collection calls Dispose() on all contained items
/// that implement IDisposable when its DisposeItems() method is called
/// </summary>
[Test]
public void TestDisposeItems() {
TestParentingCollection testCollection = new TestParentingCollection();
TestParentable testParentable = new TestParentable();
testCollection.Add(testParentable);
testCollection.DisposeItems();
Assert.IsTrue(testParentable.DisposeCalled);
}
}
} // namespace Nuclex.Support.Collections
#endif // UNITTEST