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

//
// FormTest.cs: Test cases for Form.
//
// Author:
//   Ritvik Mayank ([email protected])
//
// (C) 2005 Novell, Inc. (http://www.novell.com)
//

using System;
using System.ComponentModel;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

using NUnit.Framework;

namespace MonoTests.System.Windows.Forms
{
	[TestFixture]
	public class FormTest
	{
		[Test]
		public void FormPropertyTest ()
		{
			Form myform = new Form ();
			myform.Visible = true;
			myform.Text = "NewForm";
			myform.Name = "FormTest";
			Assert.IsNull (myform.AcceptButton, "#1");
			Assert.IsNull (myform.ActiveMdiChild, "#2"); 
			Assert.IsFalse (myform.AutoScale, "#3");
			Assert.IsNull (myform.CancelButton, "#6");
			Assert.IsTrue (myform.ControlBox, "#9");
			Assert.IsTrue (myform.DesktopBounds.X > 0, "#10a");
			Assert.IsTrue (myform.DesktopBounds.Y > 0, "#10b");
			Assert.AreEqual (300, myform.DesktopBounds.Height, "#10c");
			Assert.AreEqual (300, myform.DesktopBounds.Width, "#10d");
			Assert.IsTrue (myform.DesktopLocation.X > 0, "#11a");
			Assert.IsTrue (myform.DesktopLocation.Y > 0, "#11b");
			Assert.AreEqual (DialogResult.None, myform.DialogResult, "#12");
			Assert.AreEqual (FormBorderStyle.Sizable, myform.FormBorderStyle, "#13");
			Assert.IsFalse (myform.HelpButton, "#14");
			Assert.AreEqual ("System.Drawing.Icon", myform.Icon.GetType ().ToString (), "#15");
			Assert.IsFalse (myform.IsMdiChild, "#16");
			Assert.IsFalse (myform.IsMdiContainer, "#17");
			Assert.IsFalse (myform.KeyPreview, "#18");
			Assert.IsTrue (myform.MaximizeBox, "#19");
			Assert.AreEqual (0, myform.MaximumSize.Height, "#20a");
			Assert.AreEqual (0, myform.MaximumSize.Width, "#20b");
			Assert.AreEqual (0, myform.MdiChildren.Length, "#21a");
			Assert.AreEqual (1, myform.MdiChildren.Rank, "#21b");
			Assert.IsFalse (myform.MdiChildren.IsSynchronized, "#21c");
			Assert.IsNull (myform.MdiParent, "#22");
			Assert.IsNull (myform.Menu, "#23");
			Assert.IsNull (myform.MergedMenu, "#24");
			Assert.IsTrue (myform.MinimizeBox, "#25");
			Assert.AreEqual (0, myform.MinimumSize.Height, "#26a");
			Assert.AreEqual (0, myform.MinimumSize.Width, "#26b");
			Assert.IsTrue (myform.MinimumSize.IsEmpty, "#26c");
			Assert.IsFalse (myform.Modal, "#27");
			Assert.AreEqual (1, myform.Opacity, "#28");
			Assert.AreEqual (0, myform.OwnedForms.Length, "#29a");
			Assert.AreEqual (1, myform.OwnedForms.Rank, "#29b");
			Assert.IsNull (myform.Owner, "#30");
			Assert.IsTrue (myform.ShowInTaskbar, "#31");
			Assert.AreEqual (300, myform.Size.Height, "#32a");
			Assert.AreEqual (300, myform.Size.Width, "#32b");
			Assert.AreEqual (SizeGripStyle.Auto, myform.SizeGripStyle, "#33");
			Assert.AreEqual (FormStartPosition.WindowsDefaultLocation, myform.StartPosition, "#34");
			Assert.IsTrue (myform.TopLevel, "#35");
			Assert.IsFalse (myform.TopMost, "#36");
			Assert.AreEqual (Color.Empty, myform.TransparencyKey, "#37");
			Assert.AreEqual (FormWindowState.Normal, myform.WindowState, "#38");
			Assert.AreEqual (ImeMode.NoControl, myform.ImeMode, "#39");
			myform.Dispose ();
		}

		[Test]
		[NUnit.Framework.Category ("NotWorking")]
		public void ActivateTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Visible = true;
			myform.Text = "NewForm";
			myform.Name = "FormTest";
			myform.Activate ();
			Assert.AreEqual (true, myform.Focus (), "#40");
			myform.Dispose ();
		}

		[Test]
		public void AddOwnedFormTest ()
		{
			Form parent = new Form ();
			parent.ShowInTaskbar = false;
			parent.Text = "NewParent";
			Form ownedForm = new Form ();
			ownedForm.ShowInTaskbar = false;
			ownedForm.Text = "Owned Form";
			parent.AddOwnedForm (ownedForm);
			ownedForm.Show ();
			Assert.AreEqual ("NewParent", ownedForm.Owner.Text, "#41");
			ownedForm.Dispose ();
			parent.Dispose ();
		}

		[Test] // bug #80020
		[NUnit.Framework.Category ("NotWorking")]
		public void IsHandleCreated ()
		{
			Form main = new Form ();
			main.Name = "main";
			main.IsMdiContainer = true;
			main.ShowInTaskbar = false;
			Assert.IsFalse (main.IsHandleCreated, "#1");

			Form child = new Form ();
			child.MdiParent = main;
			child.WindowState = FormWindowState.Maximized;
			Assert.IsFalse (main.IsHandleCreated, "#2");

			child.Show ();
			Assert.IsFalse (child.IsHandleCreated, "#3");
			Assert.IsFalse (main.IsHandleCreated, "#4");

			main.Show ();
			Assert.IsTrue (child.IsHandleCreated, "#5");
			Assert.IsTrue (main.IsHandleCreated, "#6");

			child.Dispose ();
			main.Dispose ();
		}

		[Test]
		public void RemoveOwnedFormTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Text = "NewForm";
			myform.Name = "FormTest";
			myform.RemoveOwnedForm (myform);
			myform.Show ();
			Assert.AreEqual (null, myform.Owner, "#44");
			myform.Dispose ();
		}

		[Test]
		public void SetDesktopBoundsTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Visible = true;
			myform.Text = "NewForm";
			myform.Name = "FormTest";
			myform.SetDesktopBounds (10, 10, 200 , 200);
			Assert.AreEqual (200, myform.DesktopBounds.Height, "#45");
			myform.Dispose ();
		}

		[Test]
		public void SetDesktopLocationTest ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Visible = true;
			myform.Text = "NewForm";
			myform.Name = "FormTest";
			myform.SetDesktopLocation (10, 10);
			Assert.AreEqual (10, myform.DesktopLocation.X, "#46");
			myform.Dispose ();
		}

		[Test]
		public void SetDialogResultOutOfRange ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			try {
				myform.DialogResult = (DialogResult) (-1);
				Assert.Fail ("#48");
			} catch (InvalidEnumArgumentException) {
			}

			try {
				myform.DialogResult = (DialogResult) ((int) DialogResult.No + 1);
				Assert.Fail ("#49");
			} catch (InvalidEnumArgumentException) {
			}
			myform.Dispose ();
		}

		void myform_set_dialogresult (object sender, EventArgs e)
		{
			Form f = (Form)sender;

			f.DialogResult = DialogResult.OK;
		}

		void myform_close (object sender, EventArgs e)
		{
			Form f = (Form)sender;

			f.Close();
		}

		[Test]
		public void SetDialogResult ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.Visible = true;

			myform.DialogResult = DialogResult.Cancel;

			Assert.IsTrue (myform.Visible, "A1");
			Assert.IsFalse (myform.IsDisposed, "A2");

			myform.Close ();

			Assert.IsFalse (myform.Visible, "A3");
			Assert.IsTrue (myform.IsDisposed, "A4");

			DialogResult result;

			myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.VisibleChanged += new EventHandler (myform_set_dialogresult);
			result = myform.ShowDialog ();

			Assert.AreEqual (result, DialogResult.OK, "A5");
			Assert.IsFalse (myform.Visible, "A6");
			Assert.IsFalse (myform.IsDisposed, "A7");

			myform = new Form ();
			myform.ShowInTaskbar = false;
			myform.VisibleChanged += new EventHandler (myform_close);
			result = myform.ShowDialog ();

			Assert.AreEqual (result, DialogResult.Cancel, "A8");
			Assert.IsFalse (myform.Visible, "A9");
			Assert.IsFalse (myform.IsDisposed, "A10");
		}

		[Test] // bug #80604
		[NUnit.Framework.Category ("NotWorking")]
		public void VisibleOnLoad ()
		{
			MockForm form = new MockForm ();
			form.CloseOnLoad = true;
			Application.Run (form);
			Assert.IsTrue (form.VisibleOnLoad, "#1");
			form.Dispose ();

			form = new MockForm ();
			form.ShowInTaskbar = false;
			form.Show ();
			Assert.IsTrue (form.VisibleOnLoad, "#2");
			form.Dispose ();
		}

		[Test] // bug #80052
		[NUnit.Framework.Category ("NotWorking")]
		public void Location ()
		{
			// 
			// CenterParent
			// 

			Form formA = new Form ();
			formA.ShowInTaskbar = false;
			formA.StartPosition = FormStartPosition.CenterParent;
			formA.Location = new Point (151, 251);
			formA.Show ();

			Assert.AreEqual (FormStartPosition.CenterParent, formA.StartPosition, "#A1");
			Assert.IsFalse (formA.Location.X == 151, "#A2");
			Assert.IsFalse (formA.Location.Y == 251, "#A3");

			formA.Location = new Point (311, 221);

			Assert.AreEqual (FormStartPosition.CenterParent, formA.StartPosition, "#A4");
			Assert.AreEqual (311, formA.Location.X, "#A5");
			Assert.AreEqual (221, formA.Location.Y, "#A6");

			formA.Dispose ();

			// 
			// CenterScreen
			// 

			Form formB = new Form ();
			formB.ShowInTaskbar = false;
			formB.StartPosition = FormStartPosition.CenterScreen;
			formB.Location = new Point (151, 251);
			formB.Show ();

			Assert.AreEqual (FormStartPosition.CenterScreen, formB.StartPosition, "#B1");
			Assert.IsFalse (formB.Location.X == 151, "#B2");
			Assert.IsFalse (formB.Location.Y == 251, "#B3");

			formB.Location = new Point (311, 221);

			Assert.AreEqual (FormStartPosition.CenterScreen, formB.StartPosition, "#B4");
			Assert.AreEqual (311, formB.Location.X, "#B5");
			Assert.AreEqual (221, formB.Location.Y, "#B6");

			formB.Dispose ();

			// 
			// Manual
			// 

			Form formC = new Form ();
			formC.ShowInTaskbar = false;
			formC.StartPosition = FormStartPosition.Manual;
			formC.Location = new Point (151, 251);
			formC.Show ();

			Assert.AreEqual (FormStartPosition.Manual, formC.StartPosition, "#C1");
			Assert.AreEqual (151, formC.Location.X, "#C2");
			Assert.AreEqual (251, formC.Location.Y, "#C3");

			formC.Location = new Point (311, 221);

			Assert.AreEqual (FormStartPosition.Manual, formC.StartPosition, "#C4");
			Assert.AreEqual (311, formC.Location.X, "#C5");
			Assert.AreEqual (221, formC.Location.Y, "#C6");

			formC.Dispose ();

			// 
			// WindowsDefaultBounds
			// 

			Form formD = new Form ();
			formD.ShowInTaskbar = false;
			formD.StartPosition = FormStartPosition.WindowsDefaultBounds;
			formD.Location = new Point (151, 251);
			formD.Show ();

			Assert.AreEqual (FormStartPosition.WindowsDefaultBounds, formD.StartPosition, "#D1");
			Assert.IsFalse (formD.Location.X == 151, "#D2");
			Assert.IsFalse (formD.Location.Y == 251, "#D3");

			formD.Location = new Point (311, 221);

			Assert.AreEqual (FormStartPosition.WindowsDefaultBounds, formD.StartPosition, "#D4");
			Assert.AreEqual (311, formD.Location.X, "#D5");
			Assert.AreEqual (221, formD.Location.Y, "#D6");

			formD.Dispose ();

			// 
			// WindowsDefaultLocation
			// 

			Form formE = new Form ();
			formE.ShowInTaskbar = false;
			formE.Location = new Point (151, 251);
			formE.Show ();

			Assert.AreEqual (FormStartPosition.WindowsDefaultLocation, formE.StartPosition, "#E1");
			Assert.IsFalse (formE.Location.X == 151, "#E2");
			Assert.IsFalse (formE.Location.Y == 251, "#E3");

			formE.Location = new Point (311, 221);

			Assert.AreEqual (FormStartPosition.WindowsDefaultLocation, formE.StartPosition, "#E4");
			Assert.AreEqual (311, formE.Location.X, "#E5");
			Assert.AreEqual (221, formE.Location.Y, "#E6");

			formE.Dispose ();
		}

		[Test]
		public void DisposeOwnerTest ()
		{
			Form f1 = new Form ();
			Form f2 = new Form ();

			f2.Owner = f1;

			f1.Dispose ();

			Assert.IsNull (f2.Owner, "1");
			Assert.AreEqual (0, f1.OwnedForms.Length, "2");
		}

		[Test]
		[ExpectedException (typeof (ObjectDisposedException))]
		public void AccessDisposedForm ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;

			myform.Show ();
			myform.Close (); // this should result in the form being disposed
			myform.Show (); // and this line should result in the ODE being thrown
		}

		class MyForm : Form
		{
			public void DoDestroyHandle ()
			{
				DestroyHandle();
			}
			public void DoRecreateHandle ()
			{
				RecreateHandle();
			}
		}

		int handle_destroyed_count;
		void handle_destroyed (object sender, EventArgs e)
		{
			handle_destroyed_count++;
		}

		[Test]
		public void DestroyHandleTest ()
		{
			handle_destroyed_count = 0;

			MyForm f1 = new MyForm ();
			f1.HandleDestroyed += new EventHandler (handle_destroyed);
			f1.Show ();
			f1.DoDestroyHandle ();
			Assert.AreEqual (1, handle_destroyed_count, "1");

			f1 = new MyForm ();
			f1.HandleDestroyed += new EventHandler (handle_destroyed);
			f1.Show ();
			f1.DoRecreateHandle ();
			Assert.AreEqual (2, handle_destroyed_count, "2");
		}

		[Test]
		public void FormClose ()
		{
			Form myform = new Form ();
			myform.ShowInTaskbar = false;

			Assert.IsFalse (myform.Visible, "A1");
			Assert.IsFalse (myform.IsDisposed, "A2");

			myform.Close ();

			Assert.IsFalse (myform.Visible, "A3");
			Assert.IsFalse (myform.IsDisposed, "A4");

			myform.Show ();

			Assert.IsTrue (myform.Visible, "A5");
			Assert.IsFalse (myform.IsDisposed, "A6");

			myform.Close ();

			Assert.IsFalse (myform.Visible, "A7");
			Assert.IsTrue (myform.IsDisposed, "A8");
		}

		[Test]
		public void FormClose2 ()
		{
			WMCloseWatcher f = new WMCloseWatcher ();
			f.ShowInTaskbar = false;

			f.close_count = 0;
			Assert.IsFalse (f.Visible, "A1");
			f.Close ();
			Assert.AreEqual (0, f.close_count, "A2");


			f.Show ();
			f.Close ();
			Assert.AreEqual (1, f.close_count, "A3");
		}

		class WMCloseWatcher : Form {
			public int close_count;

			protected override void WndProc (ref Message msg) {
				if (msg.Msg == 0x0010 /* WM_CLOSE */) {
					close_count ++;
				}

				base.WndProc (ref msg);
			}
		}

		class SwallowOnActivated : Form {
			protected override void OnActivated (EventArgs e)
			{
				// do nothing
			}

			protected override void OnCreateControl () {
				base.OnCreateControl ();
			}
		}

		class EnterTest : Button {
			protected override void OnEnter (EventArgs e)
			{
				on_enter = true;
				base.OnEnter (e);
			}

			public bool on_enter;
		}

		[Test]
		public void OnActivateEventHandlingTest1 ()
		{
			if (RunningOnUnix) {
				Assert.Ignore ("Relies on form.Show() synchronously generating WM_ACTIVATE");
			}

			SwallowOnActivated f = new SwallowOnActivated ();

			f.ShowInTaskbar = false;

			EnterTest c = new EnterTest ();
			f.Controls.Add (c);

			f.Show ();

			Assert.IsTrue (c.on_enter, "1");

			f.Dispose ();
		}
		
#if NET_2_0
		[Test]
		public void FormClosingEvents ()
		{
			// Standard Close
			Form f = new Form ();
			string events = string.Empty;

			f.Closing += new CancelEventHandler (delegate (Object obj, CancelEventArgs e) { events += ("Closing;"); });
			f.FormClosing += new FormClosingEventHandler (delegate (Object obj, FormClosingEventArgs e) { events += string.Format ("FormClosing [Reason:{0} - Cancel:{1}]", e.CloseReason, e.Cancel); });
	
			f.Show ();
			f.Close ();
			
			Assert.AreEqual ("Closing;FormClosing [Reason:UserClosing - Cancel:False]", events, "A1");			
		}

		[Test]
		public void FormClosingEventsCancel ()
		{
			// Shows that setting Cancel in Closing flows through to FormClosing
			Form f = new Form ();
			string events = string.Empty;

			f.Closing += new CancelEventHandler (delegate (Object obj, CancelEventArgs e) { events += ("Closing;"); e.Cancel = true; });
			f.FormClosing += new FormClosingEventHandler (delegate (Object obj, FormClosingEventArgs e) { events += string.Format("FormClosing [Reason:{0} - Cancel:{1}]", e.CloseReason, e.Cancel); e.Cancel = false; });

			f.Show ();
			f.Close ();

			Assert.AreEqual ("Closing;FormClosing [Reason:UserClosing - Cancel:True]", events, "A1");
		}

		[Test]
		public void FormClosedEvents ()
		{
			// Standard Closed
			Form f = new Form ();
			string events = string.Empty;

			f.Closed += new EventHandler (delegate (Object obj, EventArgs e) { events += ("Closed;"); });
			f.FormClosed += new FormClosedEventHandler (delegate (Object obj, FormClosedEventArgs e) { events += string.Format ("FormClosed [Reason:{0}]", e.CloseReason); });

			f.Show ();
			f.Close ();

			Assert.AreEqual ("Closed;FormClosed [Reason:UserClosing]", events, "A1");
		}

		[Test]
		public void ShowWithOwner ()
		{
			Form f = new Form ();
			Button b = new Button ();
			f.Controls.Add (b);

			Form f2 = new Form ();

			f2.Show (f);

			Assert.AreSame (f, f2.Owner, "A1");

			f2 = new Form ();

			f2.Show (b);
			Assert.AreSame (f, f2.Owner, "A2");

			Button b2 = new Button ();
			f2 = new Form ();

			f2.Show (b2);
			Assert.AreEqual (null, f2.Owner, "A3");

			f2 = new Form ();
			f2.Show (null);
			Assert.AreEqual (null, f2.Owner, "A4");
		}

		[Test]
		[ExpectedException (typeof (InvalidOperationException))]
		public void ShowWithOwnerIOE ()
		{
			Form f = new Form ();
			f.Show (f);
		}
		
		[Test]	// Bug #79959
		[NUnit.Framework.Category ("NotWorking")]
		public void BehaviorResizeOnBorderStyleChanged ()
		{
			// Marked NotWorking because the ClientSize is probably dependent on the WM.
			// The values below match .Net to make sure our behavior is the same.
			Form f = new Form ();
			f.Show ();

			Assert.AreEqual (new Size (300, 300), f.Size, "A1");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A2");

			f.FormBorderStyle = FormBorderStyle.FixedSingle;
			Assert.AreEqual (new Size (298, 298), f.Size, "A3");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A4");

			f.FormBorderStyle = FormBorderStyle.Sizable;
			Assert.AreEqual (new Size (300, 300), f.Size, "A5");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A6");
			
			f.Close ();
		}
		
		[Test]	// bug #80574
		[NUnit.Framework.Category ("NotWorking")]
		public void BehaviorResizeOnBorderStyleChangedNotVisible ()
		{
			// Marked NotWorking because the ClientSize is probably dependent on the WM.
			// The values below match .Net to make sure our behavior is the same.
			Form f = new Form ();

			Assert.AreEqual (new Size (300, 300), f.Size, "A1");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A2");

			f.FormBorderStyle = FormBorderStyle.Fixed3D;
			Assert.AreEqual (new Size (300, 300), f.Size, "A3");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A4");

			f.FormBorderStyle = FormBorderStyle.FixedDialog;
			Assert.AreEqual (new Size (300, 300), f.Size, "A5");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A6");

			f.FormBorderStyle = FormBorderStyle.FixedSingle;
			Assert.AreEqual (new Size (300, 300), f.Size, "A7");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A8");

			f.FormBorderStyle = FormBorderStyle.FixedToolWindow;
			Assert.AreEqual (new Size (300, 300), f.Size, "A9");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A0");

			f.FormBorderStyle = FormBorderStyle.None;
			Assert.AreEqual (new Size (300, 300), f.Size, "A11");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A12");

			f.FormBorderStyle = FormBorderStyle.SizableToolWindow;
			Assert.AreEqual (new Size (300, 300), f.Size, "A13");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A14");

			f.FormBorderStyle = FormBorderStyle.Sizable;
			Assert.AreEqual (new Size (300, 300), f.Size, "A15");
			Assert.AreEqual (new Size (292, 266), f.ClientSize, "A16");
		}
#endif

		private bool RunningOnUnix {
			get {
				// check for Unix platforms - see FAQ for more details
				// http://www.mono-project.com/FAQ:_Technical#How_to_detect_the_execution_platform_.3F
				int platform = (int) Environment.OSVersion.Platform;
				return ((platform == 4) || (platform == 128));
			}
		}

		private class MockForm : Form
		{
			public bool CloseOnLoad {
				get { return _closeOnLoad; }
				set { _closeOnLoad = value; }
			}

			public bool VisibleOnLoad {
				get { return _visibleOnLoad; }
			}

			protected override void OnLoad(EventArgs e) {
				base.OnLoad(e);
				_visibleOnLoad = Visible;
				if (CloseOnLoad)
					Close ();
			}

			private bool _closeOnLoad;
			private bool _visibleOnLoad;
		}
	}
}