test: add test compatibility

Author: snowyu

gguf-py/tests/test_gguf.py

@@ -13,8 +13,8 @@
 
 class TestGGUFReaderWriter(unittest.TestCase):
 
-    def test_rw(self) -> None:
-        # Example usage with a file
+    @classmethod
+    def setUpClass(cls):
         gguf_writer = GGUFWriter(model_file, "llama")
 
         # gguf_writer.add_architecture()
@@ -31,6 +31,7 @@ def test_rw(self) -> None:
         gguf_writer.add_kv("tokenizer.ggml.add_bos_token", True)
         gguf_writer.add_dict("tokenizer_config", {
                              "/tokenizer.ggml.bos_token_id:bos_token": None, "/tokenizer.ggml.add_bos_token": None})
+        gguf_writer.add_array("oldArray", [1, 2, 3])
         gguf_writer.add_custom_alignment(64)
 
         tensor1 = np.ones((32,), dtype=np.float32) * 100.0
@@ -47,6 +48,18 @@ def test_rw(self) -> None:
 
         gguf_writer.close()
 
+    def test_rw(self) -> None:
+        # test compatibility
+        gguf_reader = GGUFReader(model_file)
+        self.assertEqual(gguf_reader.alignment, 64)
+        v = gguf_reader.get_field("oldArray")
+        self.assertIsNotNone(v)
+        type, itype = v.getType()
+        self.assertEqual(type, GGUFValueType.ARRAY)
+        self.assertEqual(itype, GGUFValueType.INT32)
+        self.assertListEqual(v.get(), [1,2,3])
+
+    def test_rw_ex(self) -> None:
         gguf_reader = GGUFReader(model_file)
         self.assertEqual(gguf_reader.alignment, 64)