X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5828d76add0c964f6b9ca0e7fe23e49b0ea9ff26..f46e6a1ef9541a3d13c38a114870658d3b4e004b:/tests/image/image.cpp

diff --git a/tests/image/image.cpp b/tests/image/image.cpp
index 2e72d8118c..0201f271e5 100644
--- a/tests/image/image.cpp
+++ b/tests/image/image.cpp
@@ -23,13 +23,16 @@
 #ifndef WX_PRECOMP
 #endif // WX_PRECOMP
 
-#include "wx/image.h"
+#include "wx/anidecod.h" // wxImageArray
+#include "wx/palette.h"
 #include "wx/url.h"
 #include "wx/log.h"
 #include "wx/mstream.h"
 #include "wx/zstream.h"
 #include "wx/wfstream.h"
 
+#include "testimage.h"
+
 struct testData {
     const char* file;
     wxBitmapType type;
@@ -47,7 +50,7 @@ struct testData {
     { "horse.pcx", wxBITMAP_TYPE_PCX, 8 },
     { "horse.pnm", wxBITMAP_TYPE_PNM, 24 },
     { "horse.tga", wxBITMAP_TYPE_TGA, 8 },
-    { "horse.tif", wxBITMAP_TYPE_TIF, 8 }
+    { "horse.tif", wxBITMAP_TYPE_TIFF, 8 }
 };
 
 
@@ -69,6 +72,14 @@ private:
         CPPUNIT_TEST( SizeImage );
         CPPUNIT_TEST( CompareLoadedImage );
         CPPUNIT_TEST( CompareSavedImage );
+        CPPUNIT_TEST( SavePNG );
+        CPPUNIT_TEST( SaveTIFF );
+        CPPUNIT_TEST( SaveAnimatedGIF );
+        CPPUNIT_TEST( ReadCorruptedTGA );
+        CPPUNIT_TEST( GIFComment );
+        CPPUNIT_TEST( DibPadding );
+        CPPUNIT_TEST( BMPFlippingAndRLECompression );
+        CPPUNIT_TEST( ScaleCompare );
     CPPUNIT_TEST_SUITE_END();
 
     void LoadFromSocketStream();
@@ -77,6 +88,14 @@ private:
     void SizeImage();
     void CompareLoadedImage();
     void CompareSavedImage();
+    void SavePNG();
+    void SaveTIFF();
+    void SaveAnimatedGIF();
+    void ReadCorruptedTGA();
+    void GIFComment();
+    void DibPadding();
+    void BMPFlippingAndRLECompression();
+    void ScaleCompare();
 
     DECLARE_NO_COPY_CLASS(ImageTestCase)
 };
@@ -175,7 +194,7 @@ void ImageTestCase::LoadFromZipStream()
             case wxBITMAP_TYPE_GIF:
             case wxBITMAP_TYPE_PCX:
             case wxBITMAP_TYPE_TGA:
-            case wxBITMAP_TYPE_TIF:
+            case wxBITMAP_TYPE_TIFF:
             continue;       // skip testing those wxImageHandlers which cannot
                             // load data from non-seekable streams
 
@@ -820,12 +839,10 @@ void ImageTestCase::SizeImage()
        CPPUNIT_ASSERT_EQUAL( actual.GetSize().x, expected.GetSize().x );
        CPPUNIT_ASSERT_EQUAL( actual.GetSize().y, expected.GetSize().y );
 
-       const unsigned data_len = 3 * expected.GetHeight() * expected.GetWidth();
-
-       WX_ASSERT_MESSAGE
+       WX_ASSERT_EQUAL_MESSAGE
        (
          ("Resize test #%u: (%d, %d), (%d, %d)", i, st.w, st.h, st.dx, st.dy),
-         memcmp(actual.GetData(), expected.GetData(), data_len) == 0
+         expected, actual
        );
    }
 }
@@ -838,8 +855,6 @@ void ImageTestCase::CompareLoadedImage()
     wxImage expected24("horse.png");
     CPPUNIT_ASSERT( expected24.IsOk() );
 
-    const size_t dataLen = expected8.GetWidth() * expected8.GetHeight() * 3;
-
     for (size_t i=0; i<WXSIZEOF(g_testfiles); i++)
     {
         if ( !(g_testfiles[i].bitDepth == 8 || g_testfiles[i].bitDepth == 24)
@@ -856,111 +871,148 @@ void ImageTestCase::CompareLoadedImage()
         }
 
 
-        WX_ASSERT_MESSAGE
+        WX_ASSERT_EQUAL_MESSAGE
         (
             ("Compare test '%s' for loading failed", g_testfiles[i].file),
-
-            memcmp(actual.GetData(),
-                (g_testfiles[i].bitDepth == 8)
-                    ? expected8.GetData()
-                    : expected24.GetData(),
-                dataLen) == 0
+            g_testfiles[i].bitDepth == 8 ? expected8 : expected24,
+            actual
         );
     }
 
 }
 
+enum
+{
+    wxIMAGE_HAVE_ALPHA = (1 << 0),
+    wxIMAGE_HAVE_PALETTE = (1 << 1)
+};
+
 static
-void CompareImage(const wxImageHandler& handler, const wxImage& expected)
+void CompareImage(const wxImageHandler& handler, const wxImage& image,
+    int properties = 0, const wxImage *compareTo = NULL)
 {
-    bool testAlpha = expected.HasAlpha();
-    if (testAlpha && type != wxBITMAP_TYPE_PNG)
+    wxBitmapType type = handler.GetType();
+
+    const bool testPalette = (properties & wxIMAGE_HAVE_PALETTE) != 0;
+    /*
+    This is getting messy and should probably be transformed into a table
+    with image format features before it gets hairier.
+    */
+    if ( testPalette
+        && ( !(type == wxBITMAP_TYPE_BMP
+                || type == wxBITMAP_TYPE_GIF
+                || type == wxBITMAP_TYPE_ICO
+                || type == wxBITMAP_TYPE_PNG)
+            || type == wxBITMAP_TYPE_XPM) )
     {
-        // don't test images with alpha if this handler doesn't support alpha
         return;
     }
 
-    wxBitmapType type = handler.GetType();
-    if (type == wxBITMAP_TYPE_JPEG /* skip lossy JPEG */
-        || type == wxBITMAP_TYPE_TIF)
+    const bool testAlpha = (properties & wxIMAGE_HAVE_ALPHA) != 0;
+    if (testAlpha
+        && !(type == wxBITMAP_TYPE_PNG || type == wxBITMAP_TYPE_TGA
+            || type == wxBITMAP_TYPE_TIFF) )
     {
-        /*
-        TIFF is skipped because the memory stream can't be loaded. Libtiff
-        looks for a TIFF directory at offset 120008 while the memory
-        stream size is only 120008 bytes (when saving as a file
-        the file size is 120280 bytes).
-        */
+        // don't test images with alpha if this handler doesn't support alpha
         return;
     }
 
-    wxMemoryOutputStream memOut;
-    if ( !expected.SaveFile(memOut, type) )
+    if (type == wxBITMAP_TYPE_JPEG /* skip lossy JPEG */)
     {
-        // Unfortunately we can't know if the handler just doesn't support
-        // saving images, or if it failed to save.
         return;
     }
 
-    if ( !memOut.GetSize() )
+    wxMemoryOutputStream memOut;
+    if ( !image.SaveFile(memOut, type) )
     {
-        // A handler that does not support saving can return true during
-        // SaveFile, in that case the stream is empty.
+        // Unfortunately we can't know if the handler just doesn't support
+        // saving images, or if it failed to save.
         return;
     }
 
-
     wxMemoryInputStream memIn(memOut);
     CPPUNIT_ASSERT(memIn.IsOk());
 
     wxImage actual(memIn);
     CPPUNIT_ASSERT(actual.IsOk());
 
-    CPPUNIT_ASSERT( actual.GetSize() == expected.GetSize() );
+    const wxImage *expected = compareTo ? compareTo : &image;
+    CPPUNIT_ASSERT( actual.GetSize() == expected->GetSize() );
 
-    WX_ASSERT_MESSAGE
+    unsigned bitsPerPixel = testPalette ? 8 : (testAlpha ? 32 : 24);
+    WX_ASSERT_EQUAL_MESSAGE
     (
-        ("Compare test '%s' for saving failed", handler.GetExtension()),
-
-        memcmp(actual.GetData(), expected.GetData(),
-            expected.GetWidth() * expected.GetHeight() * 3) == 0
+        ("Compare test '%s (%d-bit)' for saving failed",
+            handler.GetExtension(), bitsPerPixel),
+        *expected,
+        actual
     );
 
+#if wxUSE_PALETTE
+    CPPUNIT_ASSERT(actual.HasPalette()
+        == (testPalette || type == wxBITMAP_TYPE_XPM));
+#endif
+
+    CPPUNIT_ASSERT( actual.HasAlpha() == testAlpha);
+
     if (!testAlpha)
     {
         return;
     }
 
-
-    CPPUNIT_ASSERT( actual.HasAlpha() );
-
-    WX_ASSERT_MESSAGE
+    WX_ASSERT_EQUAL_MESSAGE
     (
         ("Compare alpha test '%s' for saving failed", handler.GetExtension()),
-
-        memcmp(actual.GetAlpha(), expected.GetAlpha(),
-            expected.GetWidth() * expected.GetHeight()) == 0
+        *expected,
+        actual
     );
 }
 
+static void SetAlpha(wxImage *image)
+{
+    image->SetAlpha();
+
+    unsigned char *ptr = image->GetAlpha();
+    const int width = image->GetWidth();
+    const int height = image->GetHeight();
+    for (int y = 0; y < height; ++y)
+    {
+        for (int x = 0; x < width; ++x)
+        {
+            ptr[y*width + x] = (x*y) & wxIMAGE_ALPHA_OPAQUE;
+        }
+    }
+}
+
 void ImageTestCase::CompareSavedImage()
 {
+    // FIXME-VC6: Pre-declare the loop variables for compatibility with
+    // pre-standard compilers such as MSVC6 that don't implement proper scope
+    // for the variables declared in the for loops.
+    int i;
+
     wxImage expected24("horse.png");
     CPPUNIT_ASSERT( expected24.IsOk() );
     CPPUNIT_ASSERT( !expected24.HasAlpha() );
 
-    // Create an image with alpha based on the loaded image
-    wxImage expected32(expected24);
-    expected32.SetAlpha();
+    wxImage expected8 = expected24.ConvertToGreyscale();
 
-    int width = expected32.GetWidth();
-    int height = expected32.GetHeight();
-    for (int y = 0; y < height; ++y)
+#if wxUSE_PALETTE
+    unsigned char greys[256];
+    for (i = 0; i < 256; ++i)
     {
-        for (int x = 0; x < width; ++x)
-        {
-            expected32.SetAlpha(x, y, (x*y) & wxIMAGE_ALPHA_OPAQUE);
-        }
+        greys[i] = i;
     }
+    wxPalette palette(256, greys, greys, greys);
+    expected8.SetPalette(palette);
+#endif // #if wxUSE_PALETTE
+
+    expected8.SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_8BPP_PALETTE);
+
+    // Create an image with alpha based on the loaded image
+    wxImage expected32(expected24);
+
+    SetAlpha(&expected32);
 
     const wxList& list = wxImage::GetHandlers();
     for ( wxList::compatibility_iterator node = list.GetFirst();
@@ -968,9 +1020,371 @@ void ImageTestCase::CompareSavedImage()
     {
         wxImageHandler *handler = (wxImageHandler *) node->GetData();
 
+#if wxUSE_PALETTE
+        CompareImage(*handler, expected8, wxIMAGE_HAVE_PALETTE);
+#endif
         CompareImage(*handler, expected24);
-        CompareImage(*handler, expected32);
+        CompareImage(*handler, expected32, wxIMAGE_HAVE_ALPHA);
+    }
+}
+
+void ImageTestCase::SavePNG()
+{
+    wxImage expected24("horse.png");
+    CPPUNIT_ASSERT( expected24.IsOk() );
+#if wxUSE_PALETTE
+    CPPUNIT_ASSERT( !expected24.HasPalette() );
+#endif // #if wxUSE_PALETTE
+
+    wxImage expected8 = expected24.ConvertToGreyscale();
+
+    /*
+    horse.png converted to greyscale should be saved without a palette.
+    */
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG), expected8);
+
+    /*
+    But if we explicitly ask for trying to save with a palette, it should work.
+    */
+    expected8.SetOption(wxIMAGE_OPTION_PNG_FORMAT, wxPNG_TYPE_PALETTE);
+
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
+        expected8, wxIMAGE_HAVE_PALETTE);
+
+
+    CPPUNIT_ASSERT( expected8.LoadFile("horse.gif") );
+#if wxUSE_PALETTE
+    CPPUNIT_ASSERT( expected8.HasPalette() );
+#endif // #if wxUSE_PALETTE
+
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
+        expected8, wxIMAGE_HAVE_PALETTE);
+
+    /*
+    Add alpha to the image in such a way that there will still be a maximum
+    of 256 unique RGBA combinations. This should result in a saved
+    PNG image still being palettised and having alpha.
+    */
+    expected8.SetAlpha();
+
+    int x, y;
+    const int width = expected8.GetWidth();
+    const int height = expected8.GetHeight();
+    for (y = 0; y < height; ++y)
+    {
+        for (x = 0; x < width; ++x)
+        {
+            expected8.SetAlpha(x, y, expected8.GetRed(x, y));
+        }
     }
+
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
+        expected8, wxIMAGE_HAVE_ALPHA|wxIMAGE_HAVE_PALETTE);
+
+    /*
+    Now change the alpha of the first pixel so that we can't save palettised
+    anymore because there will be 256+1 entries which is beyond PNGs limit
+    of 256 entries.
+    */
+    expected8.SetAlpha(0, 0, 1);
+
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
+        expected8, wxIMAGE_HAVE_ALPHA);
+
+    /*
+    Even if we explicitly ask for saving palettised it should not be done.
+    */
+    expected8.SetOption(wxIMAGE_OPTION_PNG_FORMAT, wxPNG_TYPE_PALETTE);
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
+        expected8, wxIMAGE_HAVE_ALPHA);
+
+}
+
+static void TestTIFFImage(const wxString& option, int value,
+    const wxImage *compareImage = NULL)
+{
+    wxImage image;
+    if (compareImage)
+    {
+        image = *compareImage;
+    }
+    else
+    {
+        (void) image.LoadFile("horse.png");
+    }
+    CPPUNIT_ASSERT( image.IsOk() );
+
+    wxMemoryOutputStream memOut;
+    image.SetOption(option, value);
+
+    CPPUNIT_ASSERT(image.SaveFile(memOut, wxBITMAP_TYPE_TIFF));
+
+    wxMemoryInputStream memIn(memOut);
+    CPPUNIT_ASSERT(memIn.IsOk());
+
+    wxImage savedImage(memIn);
+    CPPUNIT_ASSERT(savedImage.IsOk());
+
+    WX_ASSERT_EQUAL_MESSAGE(("While checking for option %s", option),
+        true, savedImage.HasOption(option));
+
+    WX_ASSERT_EQUAL_MESSAGE(("While testing for %s", option),
+        value, savedImage.GetOptionInt(option));
+
+    WX_ASSERT_EQUAL_MESSAGE(("HasAlpha() not equal"), image.HasAlpha(), savedImage.HasAlpha());
+}
+
+void ImageTestCase::SaveTIFF()
+{
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_BITSPERSAMPLE, 1);
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 1);
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_PHOTOMETRIC, 0/*PHOTOMETRIC_MINISWHITE*/);
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_PHOTOMETRIC, 1/*PHOTOMETRIC_MINISBLACK*/);
+
+    wxImage alphaImage("horse.png");
+    CPPUNIT_ASSERT( alphaImage.IsOk() );
+    SetAlpha(&alphaImage);
+
+    // RGB with alpha
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 4, &alphaImage);
+
+    // Grey with alpha
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 2, &alphaImage);
+
+    // B/W with alpha
+    alphaImage.SetOption(wxIMAGE_OPTION_TIFF_BITSPERSAMPLE, 1);
+    TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 2, &alphaImage);
+}
+
+void ImageTestCase::SaveAnimatedGIF()
+{
+#if wxUSE_PALETTE
+    wxImage image("horse.gif");
+    CPPUNIT_ASSERT( image.IsOk() );
+
+    wxImageArray images;
+    images.Add(image);
+    int i;
+    for (i = 0; i < 4-1; ++i)
+    {
+        images.Add( images[i].Rotate90() );
+
+        images[i+1].SetPalette(images[0].GetPalette());
+    }
+
+    wxMemoryOutputStream memOut;
+    CPPUNIT_ASSERT( wxGIFHandler().SaveAnimation(images, &memOut) );
+
+    wxGIFHandler handler;
+    wxMemoryInputStream memIn(memOut);
+    CPPUNIT_ASSERT(memIn.IsOk());
+    const int imageCount = handler.GetImageCount(memIn);
+    CPPUNIT_ASSERT_EQUAL(4, imageCount);
+
+    for (i = 0; i < imageCount; ++i)
+    {
+        wxFileOffset pos = memIn.TellI();
+        CPPUNIT_ASSERT( handler.LoadFile(&image, memIn, true, i) );
+        memIn.SeekI(pos);
+
+        WX_ASSERT_EQUAL_MESSAGE
+        (
+            ("Compare test for GIF frame number %d failed", i),
+            images[i],
+            image
+        );
+    }
+#endif // #if wxUSE_PALETTE
+}
+
+void ImageTestCase::ReadCorruptedTGA()
+{
+    static unsigned char corruptTGA[18+1+3] =
+    {
+        0,
+        0,
+        10, // RLE compressed image.
+        0, 0,
+        0, 0,
+        0,
+        0, 0,
+        0, 0,
+        1, 0, // Width is 1.
+        1, 0, // Height is 1.
+        24, // Bits per pixel.
+        0,
+
+        0xff, // Run length (repeat next pixel 127+1 times).
+        0xff, 0xff, 0xff // One 24-bit pixel.
+    };
+
+    wxMemoryInputStream memIn(corruptTGA, WXSIZEOF(corruptTGA));
+    CPPUNIT_ASSERT(memIn.IsOk());
+
+    wxImage tgaImage;
+    CPPUNIT_ASSERT( !tgaImage.LoadFile(memIn) );
+
+
+    /*
+    Instead of repeating a pixel 127+1 times, now tell it there will
+    follow 127+1 uncompressed pixels (while we only should have 1 in total).
+    */
+    corruptTGA[18] = 0x7f;
+    CPPUNIT_ASSERT( !tgaImage.LoadFile(memIn) );
+}
+
+static void TestGIFComment(const wxString& comment)
+{
+    wxImage image("horse.gif");
+
+    image.SetOption(wxIMAGE_OPTION_GIF_COMMENT, comment);
+    wxMemoryOutputStream memOut;
+    CPPUNIT_ASSERT(image.SaveFile(memOut, wxBITMAP_TYPE_GIF));
+
+    wxMemoryInputStream memIn(memOut);
+    CPPUNIT_ASSERT( image.LoadFile(memIn) );
+
+    CPPUNIT_ASSERT_EQUAL(comment,
+        image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
+}
+
+void ImageTestCase::GIFComment()
+{
+    // Test reading a comment.
+    wxImage image("horse.gif");
+    CPPUNIT_ASSERT_EQUAL("  Imported from GRADATION image: gray",
+        image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
+
+
+    // Test writing a comment and reading it back.
+    TestGIFComment("Giving the GIF a gifted giraffe as a gift");
+
+
+    // Test writing and reading a comment again but with a long comment.
+    TestGIFComment(wxString(wxT('a'), 256)
+        + wxString(wxT('b'), 256)
+        + wxString(wxT('c'), 256));
+
+
+    // Test writing comments in an animated GIF and reading them back.
+    CPPUNIT_ASSERT( image.LoadFile("horse.gif") );
+
+    wxImageArray images;
+    int i;
+    for (i = 0; i < 4; ++i)
+    {
+        if (i)
+        {
+            images.Add( images[i-1].Rotate90() );
+            images[i].SetPalette(images[0].GetPalette());
+        }
+        else
+        {
+            images.Add(image);
+        }
+
+        images[i].SetOption(wxIMAGE_OPTION_GIF_COMMENT,
+            wxString::Format("GIF comment for frame #%d", i+1));
+
+    }
+
+
+    wxMemoryOutputStream memOut;
+    CPPUNIT_ASSERT( wxGIFHandler().SaveAnimation(images, &memOut) );
+
+    wxGIFHandler handler;
+    wxMemoryInputStream memIn(memOut);
+    CPPUNIT_ASSERT(memIn.IsOk());
+    const int imageCount = handler.GetImageCount(memIn);
+    for (i = 0; i < imageCount; ++i)
+    {
+        wxFileOffset pos = memIn.TellI();
+        CPPUNIT_ASSERT( handler.LoadFile(&image, memIn, true /*verbose?*/, i) );
+
+        CPPUNIT_ASSERT_EQUAL(
+            wxString::Format("GIF comment for frame #%d", i+1),
+            image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
+        memIn.SeekI(pos);
+    }
+}
+
+void ImageTestCase::DibPadding()
+{
+    /*
+    There used to be an error with calculating the DWORD aligned scan line
+    pitch for a BMP/ICO resulting in buffer overwrites (with at least MSVC9
+    Debug this gave a heap corruption assertion when saving the mask of
+    an ICO). Test for it here.
+    */
+    wxImage image("horse.gif");
+    CPPUNIT_ASSERT( image.IsOk() );
+
+    image = image.Scale(99, 99);
+
+    wxMemoryOutputStream memOut;
+    CPPUNIT_ASSERT( image.SaveFile(memOut, wxBITMAP_TYPE_ICO) );
+}
+
+static void CompareBMPImage(const wxString& file1, const wxString& file2)
+{
+    wxImage image1(file1);
+    CPPUNIT_ASSERT( image1.IsOk() );
+
+    wxImage image2(file2);
+    CPPUNIT_ASSERT( image2.IsOk() );
+
+    CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_BMP), image1, 0, &image2);
+}
+
+void ImageTestCase::BMPFlippingAndRLECompression()
+{
+    CompareBMPImage("image/horse_grey.bmp", "image/horse_grey_flipped.bmp");
+
+    CompareBMPImage("image/horse_rle8.bmp", "image/horse_grey.bmp");
+    CompareBMPImage("image/horse_rle8.bmp", "image/horse_rle8_flipped.bmp");
+
+    CompareBMPImage("image/horse_rle4.bmp", "image/horse_rle4_flipped.bmp");
+}
+
+
+#define ASSERT_IMAGE_EQUAL_TO_FILE(image, file) \
+    { \
+        wxImage imageFromFile(file); \
+        CPPUNIT_ASSERT_MESSAGE( "Failed to load " file, imageFromFile.IsOk() ); \
+        CPPUNIT_ASSERT_EQUAL( imageFromFile, image ); \
+    }
+
+void ImageTestCase::ScaleCompare()
+{
+    wxImage original;
+    CPPUNIT_ASSERT(original.LoadFile("horse.bmp"));
+
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50,  50, wxIMAGE_QUALITY_BICUBIC),
+                               "image/horse_bicubic_50x50.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BICUBIC),
+                               "image/horse_bicubic_100x100.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BICUBIC),
+                               "image/horse_bicubic_150x150.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BICUBIC),
+                               "image/horse_bicubic_300x300.png");
+
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50,  50, wxIMAGE_QUALITY_BOX_AVERAGE),
+                               "image/horse_box_average_50x50.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BOX_AVERAGE),
+                               "image/horse_box_average_100x100.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BOX_AVERAGE),
+                               "image/horse_box_average_150x150.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BOX_AVERAGE),
+                               "image/horse_box_average_300x300.png");
+
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50,  50, wxIMAGE_QUALITY_BILINEAR),
+                               "image/horse_bilinear_50x50.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BILINEAR),
+                               "image/horse_bilinear_100x100.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BILINEAR),
+                               "image/horse_bilinear_150x150.png");
+    ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BILINEAR),
+                               "image/horse_bilinear_300x300.png");
 }
 
 #endif //wxUSE_IMAGE