Tests: Add tests for 12 bits JPEGs

In this commit, two tests are added, one with a `SOF1` image, the other
with a `SOF2`.

3 files changed, 22 insertions, 0 deletions

diff --git a/Tests/LibGfx/TestImageDecoder.cpp b/Tests/LibGfx/TestImageDecoder.cpp
index 9faaecaa2f..b3b711885b 100644
--- a/Tests/LibGfx/TestImageDecoder.cpp
+++ b/Tests/LibGfx/TestImageDecoder.cpp
@@ -156,6 +156,28 @@ TEST_CASE(test_jpeg_sof2_successive_aproximation)
     EXPECT_EQ(frame.image->size(), Gfx::IntSize(600, 800));
 }
 
+TEST_CASE(test_jpeg_sof1_12bits)
+{
+    auto file = MUST(Core::MappedFile::map(TEST_INPUT("12-bit.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(320, 240));
+}
+
+TEST_CASE(test_jpeg_sof2_12bits)
+{
+    auto file = MUST(Core::MappedFile::map(TEST_INPUT("12-bit-progressive.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(320, 240));
+}
+
 TEST_CASE(test_pbm)
 {
     auto file = MUST(Core::MappedFile::map(TEST_INPUT("buggie-raw.pbm"sv)));
diff --git a/Tests/LibGfx/test-inputs/12-bit-progressive.jpg b/Tests/LibGfx/test-inputs/12-bit-progressive.jpg
new file mode 100644
index 0000000000..a463f7b32c
--- /dev/null
+++ b/Tests/LibGfx/test-inputs/12-bit-progressive.jpg
diff --git a/Tests/LibGfx/test-inputs/12-bit.jpg b/Tests/LibGfx/test-inputs/12-bit.jpg
new file mode 100644
index 0000000000..d7173d08e1
--- /dev/null
+++ b/Tests/LibGfx/test-inputs/12-bit.jpg