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https://github.com/beshu-tech/deltaglider.git
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7562064832
DeltaGlider reduces storage costs by storing only binary deltas between similar files. Achieves 99.9% compression for versioned artifacts. Key features: - Intelligent file type detection (delta for archives, direct for others) - Drop-in S3 replacement with automatic compression - SHA256 integrity verification on every operation - Clean hexagonal architecture - Full test coverage - Production tested with 200K+ files Case study: ReadOnlyREST reduced 4TB to 5GB (99.9% compression)
102 lines
2.2 KiB
Python
102 lines
2.2 KiB
Python
"""Pytest configuration and fixtures."""
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import shutil
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import tempfile
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from pathlib import Path
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from unittest.mock import Mock
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import pytest
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from deltaglider.adapters import (
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FsCacheAdapter,
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NoopMetricsAdapter,
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Sha256Adapter,
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StdLoggerAdapter,
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UtcClockAdapter,
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)
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from deltaglider.core import DeltaService
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@pytest.fixture
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def temp_dir():
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"""Create temporary directory."""
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with tempfile.TemporaryDirectory() as tmpdir:
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yield Path(tmpdir)
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@pytest.fixture
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def sample_file(temp_dir):
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"""Create sample test file."""
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file_path = temp_dir / "test.zip"
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file_path.write_text("Sample content for testing")
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return file_path
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@pytest.fixture
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def mock_storage():
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"""Create mock storage port."""
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return Mock()
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@pytest.fixture
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def mock_diff():
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"""Create mock diff port."""
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mock = Mock()
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# Make encode create empty delta file
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def encode_side_effect(base, target, out):
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out.write_bytes(b"delta content")
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mock.encode.side_effect = encode_side_effect
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return mock
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@pytest.fixture
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def real_hasher():
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"""Create real SHA256 hasher."""
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return Sha256Adapter()
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@pytest.fixture
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def cache_adapter(temp_dir, real_hasher):
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"""Create filesystem cache adapter."""
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cache_dir = temp_dir / "cache"
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return FsCacheAdapter(cache_dir, real_hasher)
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@pytest.fixture
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def clock_adapter():
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"""Create UTC clock adapter."""
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return UtcClockAdapter()
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@pytest.fixture
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def logger_adapter():
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"""Create logger adapter."""
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return StdLoggerAdapter(level="DEBUG")
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@pytest.fixture
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def metrics_adapter():
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"""Create metrics adapter."""
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return NoopMetricsAdapter()
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@pytest.fixture
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def service(mock_storage, mock_diff, real_hasher, cache_adapter, clock_adapter, logger_adapter, metrics_adapter):
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"""Create DeltaService with test adapters."""
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return DeltaService(
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storage=mock_storage,
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diff=mock_diff,
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hasher=real_hasher,
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cache=cache_adapter,
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clock=clock_adapter,
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logger=logger_adapter,
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metrics=metrics_adapter,
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)
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@pytest.fixture
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def skip_if_no_xdelta():
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"""Skip test if xdelta3 not available."""
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if shutil.which("xdelta3") is None:
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pytest.skip("xdelta3 not available")
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