| 1 | from unittest.mock import AsyncMock, MagicMock |
| 2 | |
| 3 | import pytest |
| 4 | |
| 5 | from storage.file_manager import FileManager |
| 6 | |
| 7 | |
| 8 | def test_file_exists_returns_false_for_missing(tmp_path): |
| 9 | fm = FileManager(str(tmp_path)) |
| 10 | assert fm.file_exists(tmp_path / "nope.mp4") is False |
| 11 | |
| 12 | |
| 13 | def test_file_exists_returns_false_for_empty(tmp_path): |
| 14 | empty = tmp_path / "empty.mp4" |
| 15 | empty.write_bytes(b"") |
| 16 | fm = FileManager(str(tmp_path)) |
| 17 | assert fm.file_exists(empty) is False |
| 18 | |
| 19 | |
| 20 | def test_file_exists_returns_true_for_non_empty(tmp_path): |
| 21 | real = tmp_path / "real.mp4" |
| 22 | real.write_bytes(b"data") |
| 23 | fm = FileManager(str(tmp_path)) |
| 24 | assert fm.file_exists(real) is True |
| 25 | |
| 26 | |
| 27 | def test_get_file_size_returns_0_for_missing(tmp_path): |
| 28 | fm = FileManager(str(tmp_path)) |
| 29 | assert fm.get_file_size(tmp_path / "nope.mp4") == 0 |
| 30 | |
| 31 | |
| 32 | def test_get_save_path_creates_directories(tmp_path): |
| 33 | fm = FileManager(str(tmp_path)) |
| 34 | path = fm.get_save_path( |
| 35 | "Author", mode="post", aweme_title="Title", aweme_id="123", download_date="2024-01-01" |
| 36 | ) |
| 37 | assert path.exists() |
| 38 | assert "Author" in str(path) |
| 39 | assert "post" in str(path) |
| 40 | assert "123" in str(path) |
| 41 | |
| 42 | |
| 43 | @pytest.mark.asyncio |
| 44 | async def test_download_file_atomic_write(tmp_path): |
| 45 | """Downloaded file should appear only after successful completion (atomic rename).""" |
| 46 | fm = FileManager(str(tmp_path)) |
| 47 | save_path = tmp_path / "video.mp4" |
| 48 | content = b"fake video content" |
| 49 | |
| 50 | mock_response = AsyncMock() |
| 51 | mock_response.status = 200 |
| 52 | mock_response.content_length = len(content) |
| 53 | |
| 54 | async def iter_chunked(size): |
| 55 | yield content |
| 56 | |
| 57 | mock_response.content = MagicMock() |
| 58 | mock_response.content.iter_chunked = iter_chunked |
| 59 | |
| 60 | ctx = AsyncMock() |
| 61 | ctx.__aenter__ = AsyncMock(return_value=mock_response) |
| 62 | ctx.__aexit__ = AsyncMock(return_value=False) |
| 63 | |
| 64 | mock_session = MagicMock() |
| 65 | mock_session.get.return_value = ctx |
| 66 | |
| 67 | result = await fm.download_file("https://example.com/v.mp4", save_path, session=mock_session) |
| 68 | assert result is True |
| 69 | assert save_path.exists() |
| 70 | assert save_path.read_bytes() == content |
| 71 | assert not save_path.with_suffix(".mp4.tmp").exists() |
| 72 | |
| 73 | |
| 74 | @pytest.mark.asyncio |
| 75 | async def test_download_file_size_mismatch_cleans_up(tmp_path): |
| 76 | fm = FileManager(str(tmp_path)) |
| 77 | save_path = tmp_path / "video.mp4" |
| 78 | |
| 79 | mock_response = AsyncMock() |
| 80 | mock_response.status = 200 |
| 81 | mock_response.content_length = 999 |
| 82 | |
| 83 | async def iter_chunked(size): |
| 84 | yield b"short" |
| 85 | |
| 86 | mock_response.content = MagicMock() |
| 87 | mock_response.content.iter_chunked = iter_chunked |
| 88 | |
| 89 | ctx = AsyncMock() |
| 90 | ctx.__aenter__ = AsyncMock(return_value=mock_response) |
| 91 | ctx.__aexit__ = AsyncMock(return_value=False) |
| 92 | |
| 93 | mock_session = MagicMock() |
| 94 | mock_session.get.return_value = ctx |
| 95 | |
| 96 | result = await fm.download_file("https://example.com/v.mp4", save_path, session=mock_session) |
| 97 | assert result is False |
| 98 | assert not save_path.exists() |
| 99 | assert not save_path.with_suffix(".mp4.tmp").exists() |
| 100 |