Function TEST

tests/host/settings/session_buffers_test.cpp:32–45

using namespace oid::host;

TEST(MergePreviousBuffers, LoadedGetFreshExpiryDeletedDropped) {
    std::vector<PreviousBuffer> prior = {
        {"a", 5}, {"gone", 999999}, {"stale", 1}};
    std::vector<std::string> loaded = {"a"}; // only "a" loaded now
    std::set<std::string, std::less<>> seen = {
        "a", "gone"}; // "gone" was loaded then removed
    const auto out =
        merge_previous_buffers(prior, loaded, seen, /*now*/ 100, /*ttl*/ 50);
    // "a": loaded -> fresh expiry 150; "gone": seen+absent -> dropped;
    // "stale": not seen but expired (1<100) -> dropped.
    ASSERT_EQ(out.size(), 1u);
    EXPECT_EQ(out[0].variable_name, "a");
    EXPECT_EQ(out[0].expiry_epoch_s, 150);
}

TEST(MergePreviousBuffers, NotYetReloadedUnexpiredSurvives) {
    std::vector<PreviousBuffer> prior = {{"later", 1000}};