Function test_missing_directory

tests/test_model_loading.cpp:25–27

static const char* MINIMAL_CONFIG = R"({"model_type":"qwen","model_variant":"default","precision":"INT8","num_layers":2,"hidden_dim":64,"ffn_intermediate_dim":128,"attention_heads":2,"attention_kv_heads":2,"attention_head_dim":32,"vocab_size":100,"context_length":512})";

static bool test_missing_directory() {
    return expect_init_fails("/nonexistent/path/to/model");
}

static bool test_missing_config() {
    std::string dir = make_temp_dir("missing_config");