mono/mcs/class/Managed.Windows.Forms/Test/System.Windows.Forms/TreeNodeTest.cs

using System;
using NUnit.Framework;
using System.Windows.Forms;

[TestFixture]
public class TreeNodeTest {

	[Test]
	public void EmptyCtorTest ()
	{
		TreeNode tn = new TreeNode ();
		Assert.AreEqual ("", tn.Text, "#1");
		Assert.AreEqual (0, tn.Nodes.Count, "#2");
		Assert.AreEqual (-1, tn.ImageIndex, "#3");
		Assert.AreEqual (-1, tn.SelectedImageIndex, "#4");

		// Set simple properties
		tn.Text = null;
		Assert.AreEqual ("", tn.Text, "#5");
		tn.ImageIndex = 67;
		Assert.AreEqual (67, tn.ImageIndex, "#6");
		tn.SelectedImageIndex = 99;
		Assert.AreEqual (99, tn.SelectedImageIndex, "#7");
	}

	[Test]
	public void CtorTest () {
		TreeNode tn = new TreeNode ("label1");
		
		Assert.AreEqual ("label1", tn.Text);
		Assert.AreEqual (0, tn.Nodes.Count);
		Assert.AreEqual (-1, tn.ImageIndex, "II");
		Assert.AreEqual (-1, tn.SelectedImageIndex, "SI");

		Assert.IsNull (tn.FirstNode);
		Assert.IsNull (tn.LastNode);
		Assert.AreEqual ("", new TreeNode (null).Text);
	}

	[Test]
	public void CtorTest2 ()
	{
		TreeNode tn = new TreeNode ("a1", new TreeNode[] { new TreeNode ("aa1"), new TreeNode ("aa2") } );

		Assert.AreEqual ("a1", tn.Text);
		Assert.AreEqual (-1, tn.ImageIndex, "II");
		Assert.AreEqual (-1, tn.SelectedImageIndex, "SI");

		Assert.AreEqual ("aa1", tn.Nodes [0].Text, "#1");
		Assert.AreEqual ("aa2", tn.Nodes [1].Text, "#2");
		Assert.AreSame (tn.FirstNode, tn.Nodes [0], "#3");
		Assert.AreSame (tn.LastNode, tn.Nodes [1], "#4");
	}

	[Test]
	public void CtorTest3 ()
	{
		TreeNode tn = new TreeNode ("a", 5, 9);

		Assert.AreEqual ("a", tn.Text);
		Assert.IsNotNull (tn.Nodes);
		Assert.AreEqual (5, tn.ImageIndex);
		Assert.AreEqual (9, tn.SelectedImageIndex);
		Assert.AreEqual ("", new TreeNode (null, 0, 0).Text);
	}

	[Test, ExpectedException (typeof (ArgumentNullException))]
	public void CtorException1 ()
	{
		new TreeNode ("", 1, 1, null);
	}

	[Test, ExpectedException (typeof (ArgumentNullException))]
	public void CtorException2 () {
		new TreeNode ("tt", null);
	}

	[Test]
	public void Traverse ()
	{
		TreeNode tn_1 = new TreeNode ("1");
		TreeNode tn_2 = new TreeNode ("2");
		TreeNode tn_3 = new TreeNode ("3");
		TreeNode tn = new TreeNode ("lev1");
		tn.Nodes.Add (tn_1);
		Assert.AreSame (tn, tn_1.Parent, "#1");
		Assert.IsNull (tn_1.NextNode, "#2");
		Assert.AreEqual (0, tn_1.Parent.Index, "#3");
		tn.Nodes.Add (tn_2);
		Assert.IsNull (tn_1.NextNode.NextNode, "#33");
		tn.Nodes.Add (tn_3);
		Assert.AreEqual (2, tn_3.Index, "#4");

		Assert.AreEqual (3, tn.Nodes.Count, "#5");
		Assert.AreSame (tn_2, tn_2.NextNode.PrevNode, "#6");
		Assert.IsNull (tn_1.PrevNode, "#7");
	}

	[Test, ExpectedException (typeof (Exception))]
	public void FullPathException ()
	{
		string s = new TreeNode ("").FullPath;
	}

	[Test]
	public void FullPathTest ()
	{
		TreeNode tn_1 = new TreeNode ("A");
		TreeNode tn_2 = new TreeNode ("B");
		tn_2.Nodes.Add (tn_1);

		TreeView tv = new TreeView ();
		tv.Nodes.Add (tn_1);
		tv.Nodes [0].Nodes.Add (tn_2);

		Assert.AreEqual ("A", tn_1.FullPath, "#1");
		Assert.AreEqual ("A", tv.Nodes[0].FullPath, "#2");
		Assert.AreEqual (@"A\B", tn_2.FullPath, "#3");
		tv.PathSeparator = "_separator_";
		Assert.AreEqual ("A_separator_B", tn_2.FullPath, "#4");
	}

	[Test]
	public void CloneTest ()
	{
		TreeNode orig = new TreeNode ("text", 2, 3, new TreeNode [] { new TreeNode ("child", 22, 33) });
		orig.Tag = FlatStyle.Flat;
		orig.Checked = true;
		orig.BackColor = System.Drawing.Color.AliceBlue;
		orig.ForeColor = System.Drawing.Color.Beige;

		TreeNode clone = (TreeNode)orig.Clone ();
		Assert.AreEqual ("text", clone.Text, "#1");
		Assert.AreEqual (2, clone.ImageIndex, "#2");
		Assert.AreEqual (3, clone.SelectedImageIndex, "#3");
		Assert.AreEqual (1, clone.Nodes.Count, "#4");
		Assert.AreEqual (FlatStyle.Flat, clone.Tag, "#5");
		Assert.IsTrue (clone.Checked, "#6");
		Assert.AreEqual ("child", clone.Nodes [0].Text, "#10");
		Assert.AreEqual (22, clone.Nodes [0].ImageIndex, "#11");
		Assert.AreEqual (System.Drawing.Color.AliceBlue, clone.BackColor, "#12");
		Assert.AreEqual (System.Drawing.Color.Beige, clone.ForeColor, "#13");
	}

}