🧪 Add test coverage for Framebuffer::setPixel

CMakeLists.txt

@@ -86,6 +86,11 @@ if(BUILD_TESTS)
     target_link_libraries(test_vec3 PRIVATE soft_render)
     add_test(NAME test_vec3 COMMAND test_vec3)
 
+
+    add_executable(test_framebuffer tests/test_framebuffer.cpp)
+    target_link_libraries(test_framebuffer PRIVATE soft_render)
+    add_test(NAME test_framebuffer COMMAND test_framebuffer)
+
     add_executable(tests tests/test_math.cpp)
     target_link_libraries(tests PRIVATE soft_render)
     add_test(NAME test_math COMMAND tests)

tests/test_framebuffer.cpp

@@ -0,0 +1,46 @@
+#include <cassert>
+#include <iostream>
+#include "soft_render/core/framebuffer.hpp"
+#include "soft_render/math/vec3.hpp"
+
+using namespace sr::core;
+using namespace sr::math;
+
+void test_framebuffer_setPixel() {
+    std::cout << "Running test_framebuffer_setPixel..." << std::endl;
+
+    Framebuffer fb(10, 10);
+
+    // Test 1: Basic setting
+    fb.setPixel(5, 5, Color(1.0f, 0.5f, 0.0f));
+    const Pixel* pixels = fb.pixels();
+    Pixel p = pixels[5 * 10 + 5];
+    assert(p.r == 255);
+    assert(p.g == 127);
+    assert(p.b == 0);
+    assert(p.a == 255);
+
+    // Test 2: Saturation logic (clamping <0 to 0 and >1 to 1)
+    fb.setPixel(0, 0, Color(-1.0f, 2.0f, 0.5f));
+    Pixel p2 = pixels[0];
+    assert(p2.r == 0);
+    assert(p2.g == 255);
+    assert(p2.b == 127);
+    assert(p2.a == 255);
+
+    // Test 3: Fractional handling
+    fb.setPixel(9, 9, Color(0.25f, 0.75f, 1.0f));
+    Pixel p3 = pixels[9 * 10 + 9];
+    assert(p3.r == 63);
+    assert(p3.g == 191);
+    assert(p3.b == 255);
+    assert(p3.a == 255);
+
+    std::cout << "test_framebuffer_setPixel passed!" << std::endl;
+}
+
+int main() {
+    test_framebuffer_setPixel();
+    std::cout << "All tests passed!" << std::endl;
+    return 0;
+}