[aux] Test full load from disk

This change adds an additional automated test loading from disk, to ensure the existing functionallity does not break.

Author: jesusmb1995

tests/CMakeLists.txt

@@ -197,6 +197,7 @@ llama_build_and_test(test-gguf.cpp)
 llama_build_and_test(test-backend-ops.cpp)
 
 llama_build_and_test(test-model-load-cancel.cpp  LABEL "model")
+llama_build_and_test(test-model-load-disk.cpp    LABEL "model")
 llama_build_and_test(test-autorelease.cpp        LABEL "model")
 
 if (NOT GGML_BACKEND_DL)

tests/test-model-load-disk.cpp

@@ -0,0 +1,41 @@
+#include <cstdlib>
+
+#include "get-model.h"
+#include "llama.h"
+
+int main(int argc, char * argv[]) {
+    auto * model_path = get_model_or_exit(argc, argv);
+    auto * file       = fopen(model_path, "r");
+    if (file == nullptr) {
+        fprintf(stderr, "no model at '%s' found\n", model_path);
+        return EXIT_FAILURE;
+    }
+
+    fprintf(stderr, "using '%s'\n", model_path);
+    fclose(file);
+
+    llama_backend_init();
+    auto params              = llama_model_params{};
+    params.use_mmap          = false;
+    params.progress_callback = [](float progress, void * ctx) {
+        (void) ctx;
+        fprintf(stderr, "%.2f%% ", progress * 100.0f);
+        // true means: Don't cancel the load
+        return true;
+    };
+    auto * model = llama_model_load_from_file(model_path, params);
+
+    // Add newline after progress output
+    fprintf(stderr, "\n");
+
+    if (model == nullptr) {
+        fprintf(stderr, "Failed to load model\n");
+        llama_backend_free();
+        return EXIT_FAILURE;
+    }
+
+    fprintf(stderr, "Model loaded successfully\n");
+    llama_model_free(model);
+    llama_backend_free();
+    return EXIT_SUCCESS;
+}