// This file is part of the 64k demo project.
// It provides reusable test helpers for GPU effect testing.
// Includes lifecycle helpers, pixel validation, and smoke tests.

#pragma once

#include <cstdint>
#include <functional>
#include <vector>

// Forward declarations
class Effect;
class MainSequence;

// ============================================================================
// Pixel Validation Helpers
// ============================================================================

// Validate pixels using a predicate function
// Returns true if at least one pixel matches the predicate
bool validate_pixels(
    const std::vector<uint8_t>& pixels,
    int width,
    int height,
    std::function<bool(uint8_t r, uint8_t g, uint8_t b, uint8_t a)> predicate);

// Check if any pixel is non-black (rendered something)
bool has_rendered_content(const std::vector<uint8_t>& pixels,
                          int width,
                          int height);

// Check if all pixels match a specific color (within tolerance)
bool all_pixels_match_color(const std::vector<uint8_t>& pixels,
                             int width,
                             int height,
                             uint8_t r,
                             uint8_t g,
                             uint8_t b,
                             uint8_t tolerance = 5);

// Compute simple hash of pixel data (for deterministic output checks)
uint64_t hash_pixels(const std::vector<uint8_t>& pixels);

// ============================================================================
// Effect Lifecycle Helpers
// ============================================================================

// Test that an effect can be constructed and initialized
// Returns true if lifecycle succeeds, false otherwise
bool test_effect_lifecycle(Effect* effect, MainSequence* main_seq);

// Test that an effect can render without crashing (smoke test)
// Does not validate output, only checks for crashes
bool test_effect_render_smoke(Effect* effect);