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) 2005-2007 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.Reflection;
  36 using System.Security.Permissions;
  37 using System.Xml.Serialization;
  38 using NUnit.Framework;
  39
  40 namespace MonoTests.System.Drawing{
  41
  42         [TestFixture]
  43         public class ImageTest {
  44
  45                 private string fname;
  46                 private bool callback;
  47
  48                 [TestFixtureSetUp]
  49                 public void FixtureSetup ()
  50                 {
  51                         fname = Path.GetTempFileName ();
  52                 }
  53
  54                 [TestFixtureTearDown]
  55                 public void FixtureTearDown ()
  56                 {
  57                         try {
  58                                 File.Delete (fname);
  59                         }
  60                         catch {
  61                         }
  62                 }
  63
  64                 [SetUp]
  65                 public void SetUp ()
  66                 {
  67                         callback = false;
  68                 }
  69
  70                 [Test]
  71                 public void FileDoesNotExists ()
  72                 {
  73                         Assert.Throws<FileNotFoundException> (() => 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                 public void GetThumbnailImage_Height_Zero ()
 103                 {
 104                         using (Bitmap bmp = new Bitmap (10, 10)) {
 105                                 Assert.Throws<OutOfMemoryException> (() => bmp.GetThumbnailImage (5, 0, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero));
 106                         }
 107                 }
 108
 109                 [Test]
 110                 public void GetThumbnailImage_Width_Negative ()
 111                 {
 112                         using (Bitmap bmp = new Bitmap (10, 10)) {
 113                                 Assert.Throws<OutOfMemoryException> (() => bmp.GetThumbnailImage (-5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero));
 114                         }
 115                 }
 116
 117                 [Test]
 118                 public void GetThumbnailImage_CallbackData_Invalid ()
 119                 {
 120                         using (Bitmap bmp = new Bitmap (10, 10)) {
 121                                 // according to documentation IntPtr.Zero must be supplied as data
 122                                 Image tn = bmp.GetThumbnailImage (5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), (IntPtr)Int32.MaxValue);
 123                                 Assert.AreEqual (5, tn.Height, "Height");
 124                                 Assert.AreEqual (5, tn.Width, "Width");
 125                                 Assert.IsFalse (callback, "Callback called");
 126                                 tn.Save (fname, ImageFormat.Tiff);
 127                         }
 128                 }
 129
 130                 [Test]
 131                 public void GetThumbnailImage_SameSize_Bmp ()
 132                 {
 133                         using (Bitmap bmp = new Bitmap (10, 10)) {
 134                                 Image tn = bmp.GetThumbnailImage (10, 10, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero);
 135                                 Assert.AreEqual (10, tn.Height, "Height");
 136                                 Assert.AreEqual (10, tn.Width, "Width");
 137                                 Assert.IsFalse (callback, "Callback called");
 138                                 tn.Save (fname, ImageFormat.Bmp);
 139                         }
 140                 }
 141
 142                 [Test]
 143                 public void GetThumbnailImage_Smaller_Gif ()
 144                 {
 145                         using (Bitmap bmp = new Bitmap (10, 10)) {
 146                                 Image tn = bmp.GetThumbnailImage (4, 4, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 147                                 Assert.AreEqual (4, tn.Height, "Height");
 148                                 Assert.AreEqual (4, tn.Width, "Width");
 149                                 Assert.IsFalse (callback, "Callback called");
 150                                 tn.Save (fname, ImageFormat.Gif);
 151                         }
 152                 }
 153
 154                 [Test]
 155                 public void GetThumbnailImage_Bigger_Png ()
 156                 {
 157                         using (Bitmap bmp = new Bitmap (10, 10)) {
 158                                 Image tn = bmp.GetThumbnailImage (40, 40, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 159                                 Assert.AreEqual (40, tn.Height, "Height");
 160                                 Assert.AreEqual (40, tn.Width, "Width");
 161                                 Assert.IsFalse (callback, "Callback called");
 162                                 tn.Save (fname, ImageFormat.Png);
 163                         }
 164                 }
 165
 166                 [Test]
 167                 public void Stream_Unlocked ()
 168                 {
 169                         try {
 170                                 Image img = null;
 171                                 using (MemoryStream ms = new MemoryStream ()) {
 172                                         using (Bitmap bmp = new Bitmap (10, 10)) {
 173                                                 bmp.Save (ms, ImageFormat.Png);
 174                                         }
 175                                         ms.Position = 0;
 176                                         img = Image.FromStream (ms);
 177                                 }
 178                                 // stream isn't available anymore
 179                                 ((Bitmap) img).MakeTransparent (Color.Transparent);
 180                         }
 181                         catch (OutOfMemoryException) {
 182                                 int p = (int) Environment.OSVersion.Platform;
 183                                 // libgdiplus (UNIX) doesn't lazy load the image so the
 184                                 // stream may be freed (and this exception will never occur)
 185                                 if ((p == 4) || (p == 128) || (p == 6))
 186                                         throw;
 187                         }
 188                 }
 189
 190                 [Test]
 191                 public void Stream_Locked ()
 192                 {
 193                         Image img = null;
 194                         using (MemoryStream ms = new MemoryStream ()) {
 195                                 using (Bitmap bmp = new Bitmap (10, 10)) {
 196                                         bmp.Save (ms, ImageFormat.Png);
 197                                 }
 198                                 ms.Position = 0;
 199                                 img = Image.FromStream (ms);
 200                                 // stream is available
 201                                 ((Bitmap) img).MakeTransparent (Color.Transparent);
 202                         }
 203                 }
 204
 205                 [Test]
 206                 [Category ("NotWorking")]       // http://bugzilla.ximian.com/show_bug.cgi?id=80558
 207                 public void XmlSerialize ()
 208                 {
 209                         new XmlSerializer (typeof (Image));
 210                 }
 211
 212                 private void Wmf (Image img)
 213                 {
 214                         Assert.IsFalse (img is Bitmap, "Bitmap");
 215                         Assert.IsTrue (img is Metafile, "Metafile");
 216                         // as Image
 217                         Assert.AreEqual (327683, img.Flags, "Flags");
 218                         Assert.IsTrue (img.RawFormat.Equals (ImageFormat.Wmf), "Wmf");
 219                         Assert.IsNull (img.Tag, "Tag");
 220                 }
 221
 222                 [Test]
 223                 public void FromFile_Metafile_Wmf ()
 224                 {
 225                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 226                         using (Image img = Image.FromFile (filename)) {
 227                                 Wmf (img);
 228                         }
 229                 }
 230
 231                 [Test]
 232                 public void FromStream_Metafile_Wmf ()
 233                 {
 234                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 235                         using (FileStream fs = File.OpenRead (filename)) {
 236                                 using (Image img = Image.FromStream (fs)) {
 237                                         Wmf (img);
 238                                 }
 239                         }
 240                 }
 241
 242                 [Test]
 243                 [Category ("NotWorking")] // https://bugzilla.novell.com/show_bug.cgi?id=338779
 244                 public void FromStream_Metafile_Wmf_NotOrigin ()
 245                 {
 246                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 247                         using (FileStream fs = File.OpenRead (filename)) {
 248                                 fs.Position = fs.Length / 2;
 249                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 250                         }
 251                 }
 252
 253                 private void Emf (Image img)
 254                 {
 255                         Assert.IsFalse (img is Bitmap, "Bitmap");
 256                         Assert.IsTrue (img is Metafile, "Metafile");
 257                         // as Image
 258                         Assert.AreEqual (327683, img.Flags, "Flags");
 259                         Assert.IsTrue (img.RawFormat.Equals (ImageFormat.Emf), "Emf");
 260                         Assert.IsNull (img.Tag, "Tag");
 261                 }
 262
 263                 [Test]
 264                 public void FromFile_Metafile_Emf ()
 265                 {
 266                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 267                         using (Image img = Image.FromFile (filename)) {
 268                                 Emf (img);
 269                         }
 270                 }
 271
 272                 [Test]
 273                 public void FromStream_Metafile_Emf ()
 274                 {
 275                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 276                         using (FileStream fs = File.OpenRead (filename)) {
 277                                 using (Image img = Image.FromStream (fs)) {
 278                                         Emf (img);
 279                                 }
 280                         }
 281                 }
 282
 283                 [Test]
 284                 [Category ("NotWorking")] // https://bugzilla.novell.com/show_bug.cgi?id=338779
 285                 public void FromStream_Metafile_Emf_NotOrigin ()
 286                 {
 287                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 288                         using (FileStream fs = File.OpenRead (filename)) {
 289                                 fs.Position = fs.Length / 2;
 290                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 291                         }
 292                 }
 293
 294                 [Test]
 295                 public void FromFile_Invalid ()
 296                 {
 297                         string filename = Assembly.GetExecutingAssembly ().Location;
 298                         Assert.Throws<OutOfMemoryException> (() => Image.FromFile (filename));
 299                 }
 300
 301                 [Test]
 302                 public void FromStream_Invalid ()
 303                 {
 304                         string filename = Assembly.GetExecutingAssembly ().Location;
 305                         using (FileStream fs = File.OpenRead (filename)) {
 306                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 307                         }
 308                 }
 309
 310                 private Bitmap GetBitmap ()
 311                 {
 312                         Bitmap bmp = new Bitmap (20, 10, PixelFormat.Format24bppRgb);
 313                         using (Graphics g = Graphics.FromImage (bmp))
 314                         {
 315                                 Pen pen = new Pen (Color.Black, 3);
 316                                 g.DrawRectangle (pen, 0, 0, 5, 10);
 317                         }
 318                         return bmp;
 319                 }
 320
 321                 [Test]
 322                 public void StreamSaveLoad ()
 323                 {
 324                         using (MemoryStream ms = new MemoryStream ()) {
 325                                 using (Bitmap bmp = GetBitmap ()) {
 326                                         Assert.AreEqual (0, ms.Position, "Position-1");
 327                                         bmp.Save (ms, ImageFormat.Bmp);
 328                                         Assert.IsTrue (ms.Position > 0, "Position-2");
 329
 330                                         ms.Position = ms.Length;
 331                                         Assert.AreEqual (ms.Length, ms.Position, "Position-3");
 332
 333                                         Bitmap bmp2 = (Bitmap)Image.FromStream (ms);
 334                                         Assert.IsTrue (ms.Position > 20, "Position-4");
 335
 336                                         Assert.IsTrue (bmp2.RawFormat.Equals (ImageFormat.Bmp), "Bmp");
 337
 338                                         Assert.AreEqual (bmp.GetPixel (0, 0), bmp2.GetPixel (0, 0), "0,0");
 339                                         Assert.AreEqual (bmp.GetPixel (10, 0), bmp2.GetPixel (10, 0), "10,0");
 340                                 }
 341                         }
 342                 }
 343
 344                 [Test]
 345                 public void StreamJunkSaveLoad ()
 346                 {
 347                         using (MemoryStream ms = new MemoryStream ()) {
 348                                 // junk
 349                                 ms.WriteByte (0xff);
 350                                 ms.WriteByte (0xef);
 351                                 Assert.AreEqual (2, ms.Position, "Position-1");
 352
 353                                 using (Bitmap bmp = GetBitmap ()) {
 354                                         bmp.Save (ms, ImageFormat.Bmp);
 355                                         Assert.IsTrue (ms.Position > 2, "Position-2");
 356                                         // exception here
 357                                         Assert.Throws<ArgumentException> (() => Image.FromStream (ms));
 358                                 }
 359                         }
 360                 }
 361
 362                 [Test]
 363                 public void XmlSerialization ()
 364                 {
 365                         new XmlSerializer (typeof (Image));
 366                 }
 367         }
 368 }