mcs/class/System.Drawing/Test/System.Drawing/TestImage.cs

   1 //
   2 // Image class testing unit
   3 //
   4 // Authors:
   5 //      Jordi Mas i Hernàndez (jmas@softcatala.org>
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 2005 Ximian, Inc.  http://www.ximian.com
   9 // Copyright (C) 2005, 2006 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Drawing;
  33 using System.Drawing.Imaging;
  34 using System.IO;
  35 using System.Security.Permissions;
  36 using NUnit.Framework;
  37
  38 namespace MonoTests.System.Drawing{
  39
  40         [TestFixture]
  41         [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
  42         public class ImageTest {
  43
  44                 private string fname;
  45                 private bool callback;
  46
  47                 [TestFixtureSetUp]
  48                 public void FixtureSetup ()
  49                 {
  50                         fname = Path.GetTempFileName ();
  51                 }
  52
  53                 [TestFixtureTearDown]
  54                 public void FixtureTearDown ()
  55                 {
  56                         try {
  57                                 File.Delete (fname);
  58                         }
  59                         catch {
  60                         }
  61                 }
  62
  63                 [SetUp]
  64                 public void SetUp ()
  65                 {
  66                         callback = false;
  67                 }
  68
  69                 [Test]
  70                 [ExpectedException (typeof (FileNotFoundException))]
  71                 public void FileDoesNotExists ()
  72                 {
  73                         Image.FromFile ("FileDoesNotExists.jpg");
  74                 }
  75
  76                 private bool CallbackTrue ()
  77                 {
  78                         callback = true;
  79                         return true;
  80                 }
  81
  82                 private bool CallbackFalse ()
  83                 {
  84                         callback = true;
  85                         return false;
  86                 }
  87
  88                 [Test]
  89                 public void GetThumbnailImage_NullCallback_Tiff ()
  90                 {
  91                         using (Bitmap bmp = new Bitmap (10, 10)) {
  92                                 // according to documentation a callback is mandatory
  93                                 Image tn = bmp.GetThumbnailImage (10, 5, null, IntPtr.Zero);
  94                                 Assert.AreEqual (5, tn.Height, "Height");
  95                                 Assert.AreEqual (10, tn.Width, "Width");
  96                                 Assert.IsFalse (callback, "Callback called");
  97                                 tn.Save (fname, ImageFormat.Tiff);
  98                         }
  99                 }
 100
 101                 [Test]
 102                 [ExpectedException (typeof (OutOfMemoryException))]
 103                 public void GetThumbnailImage_Height_Zero ()
 104                 {
 105                         using (Bitmap bmp = new Bitmap (10, 10)) {
 106                                 Image tn = bmp.GetThumbnailImage (5, 0, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero);
 107                         }
 108                 }
 109
 110                 [Test]
 111                 [ExpectedException (typeof (OutOfMemoryException))]
 112                 public void GetThumbnailImage_Width_Negative ()
 113                 {
 114                         using (Bitmap bmp = new Bitmap (10, 10)) {
 115                                 Image tn = bmp.GetThumbnailImage (-5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero);
 116                         }
 117                 }
 118
 119                 [Test]
 120                 public void GetThumbnailImage_CallbackData_Invalid ()
 121                 {
 122                         using (Bitmap bmp = new Bitmap (10, 10)) {
 123                                 // according to documentation IntPtr.Zero must be supplied as data
 124                                 Image tn = bmp.GetThumbnailImage (5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), (IntPtr)Int32.MaxValue);
 125                                 Assert.AreEqual (5, tn.Height, "Height");
 126                                 Assert.AreEqual (5, tn.Width, "Width");
 127                                 Assert.IsFalse (callback, "Callback called");
 128                                 tn.Save (fname, ImageFormat.Tiff);
 129                         }
 130                 }
 131
 132                 [Test]
 133                 public void GetThumbnailImage_SameSize_Bmp ()
 134                 {
 135                         using (Bitmap bmp = new Bitmap (10, 10)) {
 136                                 Image tn = bmp.GetThumbnailImage (10, 10, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero);
 137                                 Assert.AreEqual (10, tn.Height, "Height");
 138                                 Assert.AreEqual (10, tn.Width, "Width");
 139                                 Assert.IsFalse (callback, "Callback called");
 140                                 tn.Save (fname, ImageFormat.Bmp);
 141                         }
 142                 }
 143
 144                 [Test]
 145                 public void GetThumbnailImage_Smaller_Gif ()
 146                 {
 147                         using (Bitmap bmp = new Bitmap (10, 10)) {
 148                                 Image tn = bmp.GetThumbnailImage (4, 4, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 149                                 Assert.AreEqual (4, tn.Height, "Height");
 150                                 Assert.AreEqual (4, tn.Width, "Width");
 151                                 Assert.IsFalse (callback, "Callback called");
 152                                 tn.Save (fname, ImageFormat.Gif);
 153                         }
 154                 }
 155
 156                 [Test]
 157                 public void GetThumbnailImage_Bigger_Png ()
 158                 {
 159                         using (Bitmap bmp = new Bitmap (10, 10)) {
 160                                 Image tn = bmp.GetThumbnailImage (40, 40, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 161                                 Assert.AreEqual (40, tn.Height, "Height");
 162                                 Assert.AreEqual (40, tn.Width, "Width");
 163                                 Assert.IsFalse (callback, "Callback called");
 164                                 tn.Save (fname, ImageFormat.Png);
 165                         }
 166                 }
 167         }
 168 }