Function FL_TEST_FILE

tests/fl/stl/isr.cpp:16–380

#include "platforms/stub/isr_stub.hpp"

FL_TEST_FILE(FL_FILEPATH) {

using namespace fl;
// Test counters
static fl::atomic<int> g_isr_call_count{0};
static fl::atomic<uint32_t> g_isr_user_data_value{0};

// =============================================================================
// Helper Functions for Timing-Dependent Tests
// =============================================================================

// Wait for a condition to become true with timeout using condition variables
// This is more efficient and reliable than sleep polling under heavy load
// Returns true if condition met, false if timeout
template<typename Predicate>
static bool wait_for_condition(Predicate pred, std::chrono::milliseconds timeout) { // okay std namespace
    if (pred()) {
        return true;  // Already satisfied
    }

    // Get access to the test synchronization primitives from the timer manager
    auto& manager = fl::isr::TimerThreadManager::instance();
    fl::unique_lock<fl::mutex> lock(manager.get_test_sync_mutex());

    auto deadline = std::chrono::steady_clock::now() + timeout; // okay std namespace

    while (!pred()) {
        auto now = std::chrono::steady_clock::now(); // okay std namespace
        if (now >= deadline) {
            return false;  // Timeout
        }

        // Wait on condition variable with remaining timeout
        // This will be notified whenever an ISR executes
        auto remaining = std::chrono::duration_cast<std::chrono::milliseconds>(deadline - now); // okay std namespace
        manager.get_test_sync_cv().wait_for(lock, remaining);
    }

    return true;  // Condition met
}

// =============================================================================
// Test Handlers
// =============================================================================

static void test_isr_handler(void* user_data) {
    ++g_isr_call_count;
    if (user_data) {
        uint32_t* value = static_cast<uint32_t*>(user_data);
        g_isr_user_data_value = *value;
    }
}

// =============================================================================
// Test Cases
// =============================================================================

FL_TEST_CASE("test_isr_platform_info") {