| """Integrity checks for resumed writes and exact RGB batch storage.""" |
| import tempfile |
| from pathlib import Path |
| import unittest |
| from unittest.mock import patch |
|
|
| import cv2 |
| import numpy as np |
| import zarr |
|
|
| from export_oxt_dataset import AtomicLocalStore, write_images, write_rows, update_meta |
|
|
|
|
| class ExportStorageTests(unittest.TestCase): |
| def test_failed_replacement_preserves_committed_shared_chunk(self): |
| with tempfile.TemporaryDirectory() as temporary: |
| store = AtomicLocalStore(Path(temporary) / "test.zarr") |
| root = zarr.open_group(store=store, mode="w", zarr_format=2) |
| data = root.require_group("data") |
| write_rows(data, {"joint": np.arange(12).reshape(4, 3)}, 0, 10, {}) |
| before = data["joint"][:].copy() |
| with patch.object(Path, "replace", side_effect=OSError("simulated interruption before rename")): |
| with self.assertRaises(OSError): |
| write_rows(data, {"joint": np.full((2, 3), 88)}, 4, 10, {}) |
| np.testing.assert_array_equal(data["joint"][:], before) |
| write_rows(data, {"joint": np.full((2, 3), 88)}, 4, 10, {}) |
| np.testing.assert_array_equal(data["joint"][:4], before[:4]) |
| np.testing.assert_array_equal(data["joint"][4:6], np.full((2, 3), 88)) |
|
|
| def test_batch_rgb_retains_channels_and_arbitrary_selected_frames(self): |
| with tempfile.TemporaryDirectory() as temporary: |
| cache = Path(temporary) / "images" |
| cache.mkdir() |
| rng = np.random.default_rng(5) |
| pixels = rng.integers(0, 256, (40, 6, 8, 3), dtype=np.uint8) |
| for i, rgb in enumerate(pixels): |
| self.assertTrue(cv2.imwrite(str(cache / f"frame{i:06d}.png"), rgb[:, :, ::-1])) |
| root = zarr.open_group(store=AtomicLocalStore(Path(temporary) / "image.zarr"), mode="w", zarr_format=2) |
| indices = np.arange(1, 40, 2) |
| write_images(root, "camera", cache, indices, 2, 24, 8, 6) |
| np.testing.assert_array_equal(root["camera_rgb"][2:22], pixels[indices]) |
|
|
| def test_future_longer_strings_are_preserved_and_truncation_rejected(self): |
| with tempfile.TemporaryDirectory() as temporary: |
| root = zarr.open_group(store=AtomicLocalStore(temporary), mode="w", zarr_format=2) |
| write_rows(root, {"text": np.array(["short"])}, 0, 3, {"text": 16}) |
| |
| |
| self.assertIsNone(root["text"].metadata.filters) |
| write_rows(root, {"text": np.array(["longer UTF-8 中文"])}, 1, 3, {"text": 16}) |
| self.assertEqual(root["text"][1], "longer UTF-8 中文") |
| with self.assertRaises(ValueError): |
| write_rows(root, {"text": np.array(["x" * 17])}, 2, 3, {"text": 16}) |
|
|
|
|
| if __name__ == "__main__": |
| unittest.main() |
|
|
