Method prefill

server/test/test_server_unit.cpp:2097–2105

TEST_CASE(ServerUnitFixture, test_emitter_content_only_no_thinking) {
    auto em = make_emitter(ApiFormat::OPENAI_CHAT);
    em.emit_start();
    em.emit_token("Hello, world!");
    em.emit_finish(5);

    TEST_ASSERT(em.accumulated_text().find("Hello") != std::string::npos);
    TEST_ASSERT(em.reasoning_text().empty());
}

TEST_CASE(ServerUnitFixture, test_emitter_tool_buffer_detection) {
    // When the emitter sees <tool_call>, it should buffer and parse tools.
    auto em = make_emitter(ApiFormat::OPENAI_CHAT, weather_tools());
    em.emit_start();