Tests: Add a test for SOF2 JPEGs with successive approximations

This image was generated using `cjpeg` with the following scan file: 0 1 2: 0 0 0 2; 0: 1 63 0 1; 1: 1 63 0 1; 2: 1 63 0 1; 0 1 2: 0 0 2 1; 0: 1 63 1 0; 1: 1 63 1 0; 2: 1 63 1 0; 0 1 2: 0 0 1 0;
cubiclove · Apr 3, 2023 · 62290d5 · 62290d5
1 parent f42d850
commit 62290d5
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diff --git a/Tests/LibGfx/TestImageDecoder.cpp b/Tests/LibGfx/TestImageDecoder.cpp
@@ -145,6 +145,17 @@ TEST_CASE(test_jpeg_sof0_several_scans_odd_number_mcu)
  EXPECT_EQ(frame.image->size(), Gfx::IntSize(600, 600));
 }
 
+TEST_CASE(test_jpeg_sof2_successive_aproximation)
+{
+ auto file = MUST(Core::MappedFile::map(TEST_INPUT("successive_approximation.jpg"sv)));
+ EXPECT(Gfx::JPEGImageDecoderPlugin::sniff(file->bytes()));
+ auto plugin_decoder = MUST(Gfx::JPEGImageDecoderPlugin::create(file->bytes()));
+ EXPECT(plugin_decoder->initialize());
+
+ auto frame = MUST(plugin_decoder->frame(0));
+ EXPECT_EQ(frame.image->size(), Gfx::IntSize(600, 800));
+}
+
 TEST_CASE(test_pbm)
 {
  auto file = MUST(Core::MappedFile::map(TEST_INPUT("buggie-raw.pbm"sv)));

diff --git a/Tests/LibGfx/test-inputs/successive_approximation.jpg b/Tests/LibGfx/test-inputs/successive_approximation.jpg