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         [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
  44         public class ImageTest {
  45
  46                 private string fname;
  47                 private bool callback;
  48
  49                 [TestFixtureSetUp]
  50                 public void FixtureSetup ()
  51                 {
  52                         fname = Path.GetTempFileName ();
  53                 }
  54
  55                 [TestFixtureTearDown]
  56                 public void FixtureTearDown ()
  57                 {
  58                         try {
  59                                 File.Delete (fname);
  60                         }
  61                         catch {
  62                         }
  63                 }
  64
  65                 [SetUp]
  66                 public void SetUp ()
  67                 {
  68                         callback = false;
  69                 }
  70
  71                 [Test]
  72                 public void FileDoesNotExists ()
  73                 {
  74                         Assert.Throws<FileNotFoundException> (() => Image.FromFile ("FileDoesNotExists.jpg"));
  75                 }
  76
  77                 private bool CallbackTrue ()
  78                 {
  79                         callback = true;
  80                         return true;
  81                 }
  82
  83                 private bool CallbackFalse ()
  84                 {
  85                         callback = true;
  86                         return false;
  87                 }
  88
  89                 [Test]
  90                 public void GetThumbnailImage_NullCallback_Tiff ()
  91                 {
  92                         using (Bitmap bmp = new Bitmap (10, 10)) {
  93                                 // according to documentation a callback is mandatory
  94                                 Image tn = bmp.GetThumbnailImage (10, 5, null, IntPtr.Zero);
  95                                 Assert.AreEqual (5, tn.Height, "Height");
  96                                 Assert.AreEqual (10, tn.Width, "Width");
  97                                 Assert.IsFalse (callback, "Callback called");
  98                                 tn.Save (fname, ImageFormat.Tiff);
  99                         }
 100                 }
 101
 102                 [Test]
 103                 public void GetThumbnailImage_Height_Zero ()
 104                 {
 105                         using (Bitmap bmp = new Bitmap (10, 10)) {
 106                                 Assert.Throws<OutOfMemoryException> (() => bmp.GetThumbnailImage (5, 0, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero));
 107                         }
 108                 }
 109
 110                 [Test]
 111                 public void GetThumbnailImage_Width_Negative ()
 112                 {
 113                         using (Bitmap bmp = new Bitmap (10, 10)) {
 114                                 Assert.Throws<OutOfMemoryException> (() => bmp.GetThumbnailImage (-5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero));
 115                         }
 116                 }
 117
 118                 [Test]
 119                 public void GetThumbnailImage_CallbackData_Invalid ()
 120                 {
 121                         using (Bitmap bmp = new Bitmap (10, 10)) {
 122                                 // according to documentation IntPtr.Zero must be supplied as data
 123                                 Image tn = bmp.GetThumbnailImage (5, 5, new Image.GetThumbnailImageAbort (CallbackFalse), (IntPtr)Int32.MaxValue);
 124                                 Assert.AreEqual (5, tn.Height, "Height");
 125                                 Assert.AreEqual (5, tn.Width, "Width");
 126                                 Assert.IsFalse (callback, "Callback called");
 127                                 tn.Save (fname, ImageFormat.Tiff);
 128                         }
 129                 }
 130
 131                 [Test]
 132                 public void GetThumbnailImage_SameSize_Bmp ()
 133                 {
 134                         using (Bitmap bmp = new Bitmap (10, 10)) {
 135                                 Image tn = bmp.GetThumbnailImage (10, 10, new Image.GetThumbnailImageAbort (CallbackFalse), IntPtr.Zero);
 136                                 Assert.AreEqual (10, tn.Height, "Height");
 137                                 Assert.AreEqual (10, tn.Width, "Width");
 138                                 Assert.IsFalse (callback, "Callback called");
 139                                 tn.Save (fname, ImageFormat.Bmp);
 140                         }
 141                 }
 142
 143                 [Test]
 144                 public void GetThumbnailImage_Smaller_Gif ()
 145                 {
 146                         using (Bitmap bmp = new Bitmap (10, 10)) {
 147                                 Image tn = bmp.GetThumbnailImage (4, 4, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 148                                 Assert.AreEqual (4, tn.Height, "Height");
 149                                 Assert.AreEqual (4, tn.Width, "Width");
 150                                 Assert.IsFalse (callback, "Callback called");
 151                                 tn.Save (fname, ImageFormat.Gif);
 152                         }
 153                 }
 154
 155                 [Test]
 156                 public void GetThumbnailImage_Bigger_Png ()
 157                 {
 158                         using (Bitmap bmp = new Bitmap (10, 10)) {
 159                                 Image tn = bmp.GetThumbnailImage (40, 40, new Image.GetThumbnailImageAbort (CallbackTrue), IntPtr.Zero);
 160                                 Assert.AreEqual (40, tn.Height, "Height");
 161                                 Assert.AreEqual (40, tn.Width, "Width");
 162                                 Assert.IsFalse (callback, "Callback called");
 163                                 tn.Save (fname, ImageFormat.Png);
 164                         }
 165                 }
 166
 167                 [Test]
 168                 public void Stream_Unlocked ()
 169                 {
 170                         try {
 171                                 Image img = null;
 172                                 using (MemoryStream ms = new MemoryStream ()) {
 173                                         using (Bitmap bmp = new Bitmap (10, 10)) {
 174                                                 bmp.Save (ms, ImageFormat.Png);
 175                                         }
 176                                         ms.Position = 0;
 177                                         img = Image.FromStream (ms);
 178                                 }
 179                                 // stream isn't available anymore
 180                                 ((Bitmap) img).MakeTransparent (Color.Transparent);
 181                         }
 182                         catch (OutOfMemoryException) {
 183                                 int p = (int) Environment.OSVersion.Platform;
 184                                 // libgdiplus (UNIX) doesn't lazy load the image so the
 185                                 // stream may be freed (and this exception will never occur)
 186                                 if ((p == 4) || (p == 128) || (p == 6))
 187                                         throw;
 188                         }
 189                 }
 190
 191                 [Test]
 192                 public void Stream_Locked ()
 193                 {
 194                         Image img = null;
 195                         using (MemoryStream ms = new MemoryStream ()) {
 196                                 using (Bitmap bmp = new Bitmap (10, 10)) {
 197                                         bmp.Save (ms, ImageFormat.Png);
 198                                 }
 199                                 ms.Position = 0;
 200                                 img = Image.FromStream (ms);
 201                                 // stream is available
 202                                 ((Bitmap) img).MakeTransparent (Color.Transparent);
 203                         }
 204                 }
 205
 206                 [Test]
 207                 [Category ("NotWorking")]       // http://bugzilla.ximian.com/show_bug.cgi?id=80558
 208                 public void XmlSerialize ()
 209                 {
 210                         new XmlSerializer (typeof (Image));
 211                 }
 212
 213                 private void Wmf (Image img)
 214                 {
 215                         Assert.IsFalse (img is Bitmap, "Bitmap");
 216                         Assert.IsTrue (img is Metafile, "Metafile");
 217                         // as Image
 218                         Assert.AreEqual (327683, img.Flags, "Flags");
 219                         Assert.IsTrue (img.RawFormat.Equals (ImageFormat.Wmf), "Wmf");
 220                         Assert.IsNull (img.Tag, "Tag");
 221                 }
 222
 223                 [Test]
 224                 public void FromFile_Metafile_Wmf ()
 225                 {
 226                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 227                         using (Image img = Image.FromFile (filename)) {
 228                                 Wmf (img);
 229                         }
 230                 }
 231
 232                 [Test]
 233                 public void FromStream_Metafile_Wmf ()
 234                 {
 235                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 236                         using (FileStream fs = File.OpenRead (filename)) {
 237                                 using (Image img = Image.FromStream (fs)) {
 238                                         Wmf (img);
 239                                 }
 240                         }
 241                 }
 242
 243                 [Test]
 244                 [Category ("NotWorking")] // https://bugzilla.novell.com/show_bug.cgi?id=338779
 245                 public void FromStream_Metafile_Wmf_NotOrigin ()
 246                 {
 247                         string filename = TestBitmap.getInFile ("bitmaps/telescope_01.wmf");
 248                         using (FileStream fs = File.OpenRead (filename)) {
 249                                 fs.Position = fs.Length / 2;
 250                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 251                         }
 252                 }
 253
 254                 private void Emf (Image img)
 255                 {
 256                         Assert.IsFalse (img is Bitmap, "Bitmap");
 257                         Assert.IsTrue (img is Metafile, "Metafile");
 258                         // as Image
 259                         Assert.AreEqual (327683, img.Flags, "Flags");
 260                         Assert.IsTrue (img.RawFormat.Equals (ImageFormat.Emf), "Emf");
 261                         Assert.IsNull (img.Tag, "Tag");
 262                 }
 263
 264                 [Test]
 265                 public void FromFile_Metafile_Emf ()
 266                 {
 267                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 268                         using (Image img = Image.FromFile (filename)) {
 269                                 Emf (img);
 270                         }
 271                 }
 272
 273                 [Test]
 274                 public void FromStream_Metafile_Emf ()
 275                 {
 276                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 277                         using (FileStream fs = File.OpenRead (filename)) {
 278                                 using (Image img = Image.FromStream (fs)) {
 279                                         Emf (img);
 280                                 }
 281                         }
 282                 }
 283
 284                 [Test]
 285                 [Category ("NotWorking")] // https://bugzilla.novell.com/show_bug.cgi?id=338779
 286                 public void FromStream_Metafile_Emf_NotOrigin ()
 287                 {
 288                         string filename = TestBitmap.getInFile ("bitmaps/milkmateya01.emf");
 289                         using (FileStream fs = File.OpenRead (filename)) {
 290                                 fs.Position = fs.Length / 2;
 291                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 292                         }
 293                 }
 294
 295                 [Test]
 296                 public void FromFile_Invalid ()
 297                 {
 298                         string filename = Assembly.GetExecutingAssembly ().Location;
 299                         Assert.Throws<OutOfMemoryException> (() => Image.FromFile (filename));
 300                 }
 301
 302                 [Test]
 303                 public void FromStream_Invalid ()
 304                 {
 305                         string filename = Assembly.GetExecutingAssembly ().Location;
 306                         using (FileStream fs = File.OpenRead (filename)) {
 307                                 Assert.Throws<ArgumentException> (() => Image.FromStream (fs));
 308                         }
 309                 }
 310
 311                 private Bitmap GetBitmap ()
 312                 {
 313                         Bitmap bmp = new Bitmap (20, 10, PixelFormat.Format24bppRgb);
 314                         using (Graphics g = Graphics.FromImage (bmp))
 315                         {
 316                                 Pen pen = new Pen (Color.Black, 3);
 317                                 g.DrawRectangle (pen, 0, 0, 5, 10);
 318                         }
 319                         return bmp;
 320                 }
 321
 322                 [Test]
 323                 public void StreamSaveLoad ()
 324                 {
 325                         using (MemoryStream ms = new MemoryStream ()) {
 326                                 using (Bitmap bmp = GetBitmap ()) {
 327                                         Assert.AreEqual (0, ms.Position, "Position-1");
 328                                         bmp.Save (ms, ImageFormat.Bmp);
 329                                         Assert.IsTrue (ms.Position > 0, "Position-2");
 330
 331                                         ms.Position = ms.Length;
 332                                         Assert.AreEqual (ms.Length, ms.Position, "Position-3");
 333
 334                                         Bitmap bmp2 = (Bitmap)Image.FromStream (ms);
 335                                         Assert.IsTrue (ms.Position > 20, "Position-4");
 336
 337                                         Assert.IsTrue (bmp2.RawFormat.Equals (ImageFormat.Bmp), "Bmp");
 338
 339                                         Assert.AreEqual (bmp.GetPixel (0, 0), bmp2.GetPixel (0, 0), "0,0");
 340                                         Assert.AreEqual (bmp.GetPixel (10, 0), bmp2.GetPixel (10, 0), "10,0");
 341                                 }
 342                         }
 343                 }
 344
 345                 [Test]
 346                 public void StreamJunkSaveLoad ()
 347                 {
 348                         using (MemoryStream ms = new MemoryStream ()) {
 349                                 // junk
 350                                 ms.WriteByte (0xff);
 351                                 ms.WriteByte (0xef);
 352                                 Assert.AreEqual (2, ms.Position, "Position-1");
 353
 354                                 using (Bitmap bmp = GetBitmap ()) {
 355                                         bmp.Save (ms, ImageFormat.Bmp);
 356                                         Assert.IsTrue (ms.Position > 2, "Position-2");
 357                                         // exception here
 358                                         Assert.Throws<ArgumentException> (() => Image.FromStream (ms));
 359                                 }
 360                         }
 361                 }
 362
 363                 [Test]
 364                 public void XmlSerialization ()
 365                 {
 366                         new XmlSerializer (typeof (Image));
 367                 }
 368         }
 369 }