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

//
// ComboBoxTests.cs: Test cases for ComboBox.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2006 Matt Hargett
//                      
// Authors:             
//      Matt Hargett  <[email protected]>
//

using System;
using System.Windows.Forms;

using NUnit.Framework;

namespace MonoTests.System.Windows.Forms
{
	[TestFixture]
	public class ComboBoxTests
	{
		ComboBox comboBox;
		bool textChanged, layoutUpdated;

		[SetUp]
		public void SetUp ()
		{
			comboBox = new ComboBox ();
			textChanged = false;
			layoutUpdated = false;
			comboBox.TextChanged += new EventHandler (textChangedEventHandler);
			comboBox.Layout += new LayoutEventHandler (layoutEventHandler);
		}

		private void textChangedEventHandler (object sender, EventArgs e)
		{
			textChanged = true;
		}

		private void layoutEventHandler (object sender, LayoutEventArgs e)
		{
			layoutUpdated = true;
		}

		[Test]
		public void InitialPropertyValues ()
		{

			Assert.AreEqual (String.Empty, comboBox.Text);
			Assert.AreEqual (-1, comboBox.SelectedIndex);
			Assert.IsNull (comboBox.SelectedItem);
			Assert.AreEqual (121, comboBox.Size.Width);
			//Note: it is environment dependent
			//Assert.AreEqual(20, comboBox.Size.Height);
			Assert.IsFalse (textChanged);
			Assert.IsFalse (layoutUpdated);
		}

		[Test]
		public void SetNegativeOneSelectedIndex ()
		{
			comboBox.SelectedIndex = -1;
			Assert.AreEqual (String.Empty, comboBox.Text);
			Assert.IsFalse (textChanged);
		}

		[Test]
		public void SetDifferentText ()
		{
			comboBox.Text = "foooooooooooooooooooooooooo";
			Assert.IsTrue (textChanged);
			Assert.IsFalse (layoutUpdated);
		}

		[Test]
		public void SetSameText ()
		{
			comboBox.Text = String.Empty;
			Assert.IsFalse (textChanged);
			Assert.IsFalse (layoutUpdated);
		}

		[Test] // bug #79812
		public void Add_Item_NonString ()
		{
			comboBox.Sorted = true;
			comboBox.Items.Add (new Person ("B"));
			comboBox.Items.Add (new Person ("A"));
			comboBox.Items.Add (new Person ("C"));
			Assert.AreEqual (string.Empty, comboBox.Text, "#1");
			comboBox.SelectedIndex = 0;
			Assert.AreEqual ("A", comboBox.Text, "#2");
			comboBox.SelectedIndex = 2;
			Assert.AreEqual ("C", comboBox.Text, "#3");
		}

		[Test]
		[Category ("NotWorking")]
		public void SelectedText ()
		{
			Form form = new Form ();
			form.ShowInTaskbar = false;
			form.Visible = false;
			form.Controls.Add (comboBox);

			comboBox.Items.Add ("Bar");
			comboBox.Items.Add ("Foo");
			Assert.AreEqual (-1, comboBox.SelectedIndex, "#A1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#A2");
			comboBox.SelectedIndex = 0;
			Assert.AreEqual (0, comboBox.SelectedIndex, "#B1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#B2");
			form.Show ();
			Assert.AreEqual (0, comboBox.SelectedIndex, "#C1");
			Assert.AreEqual ("Bar", comboBox.SelectedText, "#C2");
			comboBox.SelectedIndex = 1;
			Assert.AreEqual (1, comboBox.SelectedIndex, "#D1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#D2");
			comboBox.SelectedText = "Ba";
			Assert.AreEqual (-1, comboBox.SelectedIndex, "#E1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#E2");
			comboBox.SelectedText = "Bar";
			Assert.AreEqual (-1, comboBox.SelectedIndex, "#F1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#F2");
			comboBox.SelectedText = "doesnotexist";
			Assert.AreEqual (-1, comboBox.SelectedIndex, "#G1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#G2");
			comboBox.SelectedIndex = 0;
			Assert.AreEqual (0, comboBox.SelectedIndex, "#H1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#H2");
			comboBox.SelectedText = "Foo";
			Assert.AreEqual (-1, comboBox.SelectedIndex, "#I1");
			Assert.AreEqual (string.Empty, comboBox.SelectedText, "#I2");
		}

		public class Person
		{
			private readonly string _name;

			public Person (string name)
			{
				_name = name;
			}

			public string Name
			{
				get
				{
					return _name;
				}
			}

			public override string ToString ()
			{
				return Name;
			}
		}
	}
}