test(assets): Add tests for Texture Asset support

- Added test_image.tga (generated via tools/gen_test_tga.cc).
- Updated test_assets_list.txt to include the TGA.
- Updated test_assets.cc to verify image decompression and pixel values.

4 files changed, 55 insertions, 0 deletions

diff --git a/assets/final/test_assets_list.txt b/assets/final/test_assets_list.txt
index 602d15d..c9dd83b 100644
--- a/assets/final/test_assets_list.txt
+++ b/assets/final/test_assets_list.txt
@@ -4,5 +4,6 @@ NULL_ASSET, NONE, null.bin, "A zero-byte file."
 SHADER_SNIPPET_A, NONE, shaders/test_snippet_a.wgsl, "Test snippet A"
 SHADER_SNIPPET_B, NONE, shaders/test_snippet_b.wgsl, "Test snippet B"
 PROC_NOISE_256, PROC(gen_noise, 4321, 8), _, "Procedural noise for testing"
+TEST_IMAGE, NONE, test_image.tga, "A test TGA image"
 PROC_UNKNOWN, PROC(gen_unknown_func, 0), _, "Unknown proc function"
 PROC_FAIL, PROC(gen_noise, -1337, 8), _, "Failing proc function"
diff --git a/assets/final/test_image.tga b/assets/final/test_image.tga
new file mode 100644
index 0000000..7b05b08
--- /dev/null
+++ b/assets/final/test_image.tga
diff --git a/src/tests/test_assets.cc b/src/tests/test_assets.cc
index a1ae795..5ae266e 100644
--- a/src/tests/test_assets.cc
+++ b/src/tests/test_assets.cc
@@ -91,6 +91,25 @@ int main() {
   assert(non_zero_data);
   printf("Procedural asset DropAsset and re-generation test: SUCCESS\n");
 
+  // Test Texture Asset (TGA loading)
+  printf("\nRunning Texture Asset test...\n");
+  TextureAsset tex = GetTextureAsset(AssetId::ASSET_TEST_IMAGE);
+  assert(tex.pixels != nullptr);
+  assert(tex.width == 2);
+  assert(tex.height == 2);
+  
+  // Verify pixels (Expected RGBA)
+  // Pixel 0: Red (255, 0, 0, 255)
+  assert(tex.pixels[0] == 255 && tex.pixels[1] == 0 && tex.pixels[2] == 0 && tex.pixels[3] == 255);
+  // Pixel 1: Green (0, 255, 0, 255)
+  assert(tex.pixels[4] == 0 && tex.pixels[5] == 255 && tex.pixels[6] == 0 && tex.pixels[7] == 255);
+  // Pixel 2: Blue (0, 0, 255, 255)
+  assert(tex.pixels[8] == 0 && tex.pixels[9] == 0 && tex.pixels[10] == 255 && tex.pixels[11] == 255);
+  // Pixel 3: White (255, 255, 255, 255)
+  assert(tex.pixels[12] == 255 && tex.pixels[13] == 255 && tex.pixels[14] == 255 && tex.pixels[15] == 255);
+  
+  printf("Texture Asset content verification: SUCCESS\n");
+
   // Test Unknown Procedural Function
   printf("\nRunning Unknown Procedural Function test...\n");
   size_t unknown_size = 0;
diff --git a/tools/gen_test_tga.cc b/tools/gen_test_tga.cc
new file mode 100644
index 0000000..7414eea
--- /dev/null
+++ b/tools/gen_test_tga.cc
@@ -0,0 +1,35 @@
+#include <cstdio>
+#include <cstdint>
+
+int main() {
+    FILE* f = fopen("assets/final/test_image.tga", "wb");
+    if (!f) return 1;
+
+    // TGA Header (Uncompressed True-Color, 2x2, 32-bit)
+    uint8_t header[18] = {
+        0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        2, 0, // Width: 2 (LE)
+        2, 0, // Height: 2 (LE)
+        32,   // Depth: 32 bit
+        0x28  // Descriptor: Top-Left origin, 8-bit alpha
+    };
+    fwrite(header, 1, 18, f);
+
+    // Pixel Data (BGRA order for TGA usually, but let's see what stbi expects/returns)
+    // stbi converts to requested format (RGBA).
+    // Let's write BGRA: 
+    // Pixel 0 (0,0): Red   -> 00 00 FF FF
+    // Pixel 1 (1,0): Green -> 00 FF 00 FF
+    // Pixel 2 (0,1): Blue  -> FF 00 00 FF
+    // Pixel 3 (1,1): White -> FF FF FF FF
+    
+    uint8_t pixels[] = {
+        0x00, 0x00, 0xFF, 0xFF, // Red
+        0x00, 0xFF, 0x00, 0xFF, // Green
+        0xFF, 0x00, 0x00, 0xFF, // Blue
+        0xFF, 0xFF, 0xFF, 0xFF  // White
+    };
+    fwrite(pixels, 1, sizeof(pixels), f);
+    fclose(f);
+    return 0;
+}