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/**
* @file
* @brief Unit tests for openshot::Wave effect
* @author OpenAI ChatGPT
*/
// Copyright (c) 2008-2025 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
#include <memory>
#include <QImage>
#include <QColor>
#include "Frame.h"
#include "effects/Wave.h"
#include "openshot_catch.h"
using namespace openshot;
TEST_CASE("Wave uses original pixel buffer", "[effect][wave]")
{
// Create 1x10 image with increasing red channel
QImage img(10, 1, QImage::Format_ARGB32);
for (int x = 0; x < 10; ++x)
img.setPixelColor(x, 0, QColor(x, 0, 0, 255));
auto f = std::make_shared<Frame>();
*f->GetImage() = img;
Wave w;
w.wavelength = Keyframe(0.0);
w.amplitude = Keyframe(1.0);
w.multiplier = Keyframe(0.01);
w.shift_x = Keyframe(-1.0); // negative shift to copy from previous pixel
w.speed_y = Keyframe(0.0);
auto out_img = w.GetFrame(f, 1)->GetImage();
int expected[10] = {0,0,1,2,3,4,5,6,7,8};
for (int x = 0; x < 10; ++x)
CHECK(out_img->pixelColor(x,0).red() == expected[x]);
}
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