T16: autosample VST2 via native bridge + SF2/SF3 export hoàn chỉnh, UI chip size/note_count, re-sample on preset change, tests

tests/test_autosampler.py

@@ -1,11 +1,15 @@
 """Tests cho tools/autosample_vsti.py — SF2 writer tự-sinh phải là RIFF/sfbk
 hợp lệ mà sf2utils parse được (không cần VSTi/pedalboard)."""
 import os
+import sys
 import numpy as np
 import pytest
 
 from tools.autosample_vsti import write_sf2
 
+ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+FAKE_VST2 = os.path.join(ROOT, "native_host", "tests", "fake_vst2.dll")
+
 sf2utils = pytest.importorskip("sf2utils.sf2parse")
 
 
@@ -53,3 +57,20 @@ def test_write_sf2_odd_name_no_corruption(tmp_path, caplog):
             sf2 = sf2utils.Sf2File(f)
     assert len([s for s in sf2.samples if s.end > s.start]) == 1
     assert not any("corrupted" in r.message for r in caplog.records)
+
+def test_autosample_vst2_native_bridge(tmp_path):
+    """Nhanh VST2: render qua native bridge (fake_vst2.dll) → SF2 hop le,
+    khong can pedalboard. Skip tren nen khong phai Windows / thieu DLL."""
+    if sys.platform.startswith("win") and os.path.isfile(FAKE_VST2):
+        from tools.autosample_vsti import autosample_sf2
+        out = str(tmp_path / "vst2.sf2")
+        res = autosample_sf2("fake_vst2", out, low=60, high=64, step=2,
+                             duration=0.3, release=0.2,
+                             extra_vst_dirs=[os.path.dirname(FAKE_VST2)])
+        assert res["note_count"] == 3
+        assert res["size_bytes"] == os.path.getsize(out)
+        with open(out, "rb") as f:
+            sf2 = sf2utils.Sf2File(f)
+        assert len([s for s in sf2.samples if s.end > s.start]) == 3
+    else:
+        pytest.skip("fake_vst2.dll chi chay Windows (bridge ctypes WinDLL)")