Tests/LibGfx: Actually test image decoders in TestImageDecoder

We were passing raw Gfx::Bitmap objects into the various image decoders
instead of encoded image data. This made all of them fail, but the test
expectations were set up in a way that aligned with this outcome.

With this patch, we now test the codecs for real. Except ICO, since we
don't have an ICO file handy. That's a FIXME.

Author: awesomekling

Tests/LibGfx/TestImageDecoder.cpp

@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/MappedFile.h>
 #include <AK/String.h>
 #include <LibGfx/BMPLoader.h>
 #include <LibGfx/GIFLoader.h>
@@ -22,11 +23,11 @@
 
 TEST_CASE(test_bmp)
 {
-    auto image = Gfx::load_bmp("/res/html/misc/bmpsuite_files/rgba32-1.bmp");
-    auto bmp = Gfx::BMPImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/html/misc/bmpsuite_files/rgba32-1.bmp").release_value();
+    auto bmp = Gfx::BMPImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(bmp.frame_count());
 
-    EXPECT(!bmp.sniff());
+    EXPECT(bmp.sniff());
     EXPECT(!bmp.is_animated());
     EXPECT(!bmp.loop_count());
 
@@ -36,25 +37,23 @@ TEST_CASE(test_bmp)
 
 TEST_CASE(test_gif)
 {
-    auto image = Gfx::load_gif("/res/graphics/download-animation.gif");
-    auto gif = Gfx::GIFImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/graphics/download-animation.gif").release_value();
+    auto gif = Gfx::GIFImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(gif.frame_count());
 
-    EXPECT(!gif.sniff());
-    // FIXME: is_animated() should return true
-    // LibGfx::load_gif() returns a bitmap and lies about is_animated()
-    EXPECT(!gif.is_animated());
+    EXPECT(gif.sniff());
+    EXPECT(gif.is_animated());
     EXPECT(!gif.loop_count());
 
     auto frame = gif.frame(1);
-    EXPECT(frame.duration == 0);
+    EXPECT(frame.duration == 400);
 }
 
 TEST_CASE(test_ico)
 {
     // FIXME: Use an ico file
-    auto image = Gfx::load_ico("/res/graphics/buggie.png");
-    auto ico = Gfx::ICOImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/graphics/buggie.png").release_value();
+    auto ico = Gfx::ICOImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(ico.frame_count());
 
     EXPECT(!ico.sniff());
@@ -67,11 +66,11 @@ TEST_CASE(test_ico)
 
 TEST_CASE(test_jpg)
 {
-    auto image = Gfx::load_jpg("/res/html/misc/bmpsuite_files/rgb24.jpg");
-    auto jpg = Gfx::JPGImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/html/misc/bmpsuite_files/rgb24.jpg").release_value();
+    auto jpg = Gfx::JPGImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(jpg.frame_count());
 
-    EXPECT(!jpg.sniff());
+    EXPECT(jpg.sniff());
     EXPECT(!jpg.is_animated());
     EXPECT(!jpg.loop_count());
 
@@ -81,11 +80,11 @@ TEST_CASE(test_jpg)
 
 TEST_CASE(test_pbm)
 {
-    auto image = Gfx::load_pbm("/res/html/misc/pbmsuite_files/buggie-raw.pbm");
-    auto pbm = Gfx::PBMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/html/misc/pbmsuite_files/buggie-raw.pbm").release_value();
+    auto pbm = Gfx::PBMImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(pbm.frame_count());
 
-    EXPECT(!pbm.sniff());
+    EXPECT(pbm.sniff());
     EXPECT(!pbm.is_animated());
     EXPECT(!pbm.loop_count());
 
@@ -95,11 +94,11 @@ TEST_CASE(test_pbm)
 
 TEST_CASE(test_pgm)
 {
-    auto image = Gfx::load_pbm("/res/html/misc/pbmsuite_files/buggie-raw.pbm");
-    auto pgm = Gfx::PGMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/html/misc/pgmsuite_files/buggie-raw.pgm").release_value();
+    auto pgm = Gfx::PGMImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(pgm.frame_count());
 
-    EXPECT(!pgm.sniff());
+    EXPECT(pgm.sniff());
     EXPECT(!pgm.is_animated());
     EXPECT(!pgm.loop_count());
 
@@ -109,11 +108,11 @@ TEST_CASE(test_pgm)
 
 TEST_CASE(test_png)
 {
-    auto image = Gfx::load_png("/res/graphics/buggie.png");
-    auto png = Gfx::PNGImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/graphics/buggie.png").release_value();
+    auto png = Gfx::PNGImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(png.frame_count());
 
-    EXPECT(!png.sniff());
+    EXPECT(png.sniff());
     EXPECT(!png.is_animated());
     EXPECT(!png.loop_count());
 
@@ -123,11 +122,11 @@ TEST_CASE(test_png)
 
 TEST_CASE(test_ppm)
 {
-    auto image = Gfx::load_ppm("/res/html/misc/ppmsuite_files/buggie-raw.ppm");
-    auto ppm = Gfx::PPMImageDecoderPlugin((const u8*)&image, sizeof(*image));
+    auto file = MappedFile::map("/res/html/misc/ppmsuite_files/buggie-raw.ppm").release_value();
+    auto ppm = Gfx::PPMImageDecoderPlugin((u8 const*)file->data(), file->size());
     EXPECT(ppm.frame_count());
 
-    EXPECT(!ppm.sniff());
+    EXPECT(ppm.sniff());
     EXPECT(!ppm.is_animated());
     EXPECT(!ppm.loop_count());