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TestImageWriter: Add a PNG roundtrip test

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Nico Weber 2024-05-04 21:50:14 -04:00 committed by Tim Flynn
parent aefab64984
commit 0a26831a10
Notes: sideshowbarker 2024-07-17 02:29:45 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/0a26831a10
Pull-request: https://github.com/SerenityOS/serenity/pull/24245
Reviewed-by: https://github.com/LucasChollet ✅
1 changed files with 16 additions and 3 deletions
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19
Tests/LibGfx/TestImageWriter.cpp
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@ -6,6 +6,8 @@
#include <AK/MemoryStream.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/ImageFormats/PNGLoader.h>
#include <LibGfx/ImageFormats/PNGWriter.h>
#include <LibGfx/ImageFormats/WebPLoader.h>
#include <LibGfx/ImageFormats/WebPWriter.h>
#include <LibTest/TestCase.h>
@ -32,9 +34,14 @@ static ErrorOr<NonnullRefPtr<Gfx::Bitmap>> expect_single_frame_of_size(Gfx::Imag
template<class Writer, class Loader>
static ErrorOr<void> test_roundtrip(Gfx::Bitmap const& bitmap)
{
AllocatingMemoryStream stream;
TRY(Writer::encode(stream, bitmap));
auto encoded_data = TRY(stream.read_until_eof());
ByteBuffer encoded_data;
if constexpr (requires(AllocatingMemoryStream stream) { Writer::encode(stream, bitmap); }) {
AllocatingMemoryStream stream;
TRY(Writer::encode(stream, bitmap));
encoded_data = TRY(stream.read_until_eof());
} else {
encoded_data = TRY(Writer::encode(bitmap));
}
auto plugin = TRY(Loader::create(encoded_data));
auto decoded = TRY(expect_single_frame_of_size(*plugin, bitmap.size()));
@ -72,6 +79,12 @@ static ErrorOr<AK::NonnullRefPtr<Gfx::Bitmap>> create_test_rgba_bitmap()
return bitmap;
}
TEST_CASE(test_png)
{
TRY_OR_FAIL((test_roundtrip<Gfx::PNGWriter, Gfx::PNGImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));
TRY_OR_FAIL((test_roundtrip<Gfx::PNGWriter, Gfx::PNGImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgba_bitmap()))));
}
TEST_CASE(test_webp)
{
TRY_OR_FAIL((test_roundtrip<Gfx::WebPWriter, Gfx::WebPImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));