mirror of
https://github.com/cloudstack-llc/mlx-knife.git
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The BROKE Cluster Team
57bf6d86be
Major Features Added: • Complete run command implementation with interactive/single-shot modes • MLXRunner core engine ported from 1.x with modular architecture • OpenAI-compatible server with SIGINT-robust supervisor mode • Experimental push feature properly isolated behind environment variable Key Improvements: - Full feature parity with 1.1.1 stable releases - Enhanced human output formatting across all commands - Clean separation of stable (184 tests) vs experimental features - Updated demo GIF showcasing improved 2.0 interface Fixes: - Pull operation cache pollution (Issue #30) with preflight access checks - Test stability improvements across all environments Architecture: - Modular runner design with focused helper modules - Thread-safe model loading and memory management - stable testing across Python 3.9-3.13 Ready for use as comprehensive 1.x alternative.
233 lines
10 KiB
Python
233 lines
10 KiB
Python
"""Robustness tests for critical rm and pull operations.
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These tests ensure user-cache safety and robust error handling
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for operations that modify the user's model cache.
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"""
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import pytest
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import tempfile
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import shutil
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from pathlib import Path
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from unittest.mock import patch, MagicMock
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from mlxk2.operations.rm import rm_operation
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from mlxk2.operations.pull import pull_operation
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class TestRmOperationRobustness:
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"""Test rm operation robustness with user cache safety."""
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def test_rm_force_flag_skips_all_confirmations(self, mock_models, isolated_cache):
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"""Critical: Force flag must skip ALL confirmations (Issue #23 regression)."""
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# Get a model from mock cache
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from conftest import test_list_models
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models = test_list_models(isolated_cache)["data"]["models"]
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# Filter out sentinel model and get a real mock model
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real_models = [m for m in models if "TEST-CACHE-SENTINEL" not in m["name"]]
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if not real_models:
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pytest.skip("No real models in mock cache for force flag testing")
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target_model = real_models[0]["name"]
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# Force flag should work without any interactive prompts
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with patch('builtins.input') as mock_input:
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result = rm_operation(target_model, force=True)
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# Should never call input() when force=True
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mock_input.assert_not_called()
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# Should either succeed or fail with clear reason (never prompt)
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assert result["status"] in ["success", "error"]
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def test_rm_without_force_handles_nonexistent_gracefully(self, mock_models):
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"""Test rm without force flag handles nonexistent models gracefully."""
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result = rm_operation("definitely-nonexistent-model-12345", force=False)
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assert result["status"] == "error"
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assert "not found" in result["error"]["message"].lower() or "no models found" in result["error"]["message"].lower()
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def test_rm_permission_error_handling(self, mock_models, isolated_cache):
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"""Test rm handles permission errors gracefully."""
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from conftest import atomic_cache_context, test_list_models
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from mlxk2.operations.rm import rm_operation
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with atomic_cache_context(isolated_cache, "test"):
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# Get models in test cache context
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models = test_list_models(isolated_cache)["data"]["models"]
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# Filter out sentinel model and get a real mock model
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real_models = [m for m in models if "TEST-CACHE-SENTINEL" not in m["name"]]
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if not real_models:
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pytest.skip("No real models in mock cache for permission testing")
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target_model = real_models[0]["name"]
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# Mock permission error
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with patch('shutil.rmtree', side_effect=PermissionError("Permission denied")):
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result = rm_operation(target_model, force=True)
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assert result["status"] == "error"
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assert "permission" in result["error"]["message"].lower()
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def test_rm_partial_deletion_recovery(self, mock_models, isolated_cache):
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"""Test rm handles interrupted deletion gracefully."""
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from conftest import atomic_cache_context, test_list_models
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from mlxk2.operations.rm import rm_operation
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with atomic_cache_context(isolated_cache, "test"):
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# Get models in test cache context
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models = test_list_models(isolated_cache)["data"]["models"]
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# Filter out sentinel model and get a real mock model
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real_models = [m for m in models if "TEST-CACHE-SENTINEL" not in m["name"]]
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if not real_models:
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pytest.skip("No real models in mock cache for partial deletion testing")
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target_model = real_models[0]["name"]
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# Mock partial failure (some files deleted, then error)
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call_count = 0
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def mock_rmtree_partial_fail(path):
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nonlocal call_count
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call_count += 1
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if call_count == 1:
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# First call succeeds (partial deletion)
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pass
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else:
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# Second call fails
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raise OSError("Device busy")
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with patch('shutil.rmtree', side_effect=mock_rmtree_partial_fail):
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result = rm_operation(target_model, force=True)
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# Should handle partial failure gracefully
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assert result["status"] in ["success", "error"]
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if result["status"] == "error":
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assert "error" in result["error"]["message"].lower()
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class TestPullOperationRobustness:
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"""Test pull operation robustness and error handling."""
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def test_pull_model_name_validation(self):
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"""Test pull validates model names before network operations."""
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# Test 96 character limit
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long_name = "a" * 100
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result = pull_operation(long_name)
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assert result["status"] == "error"
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# Should fail validation before attempting network operation
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assert "name" in result["error"]["message"].lower() or "invalid" in result["error"]["message"].lower()
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def test_pull_network_timeout_handling(self, monkeypatch):
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"""Test pull handles network timeouts gracefully."""
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# Set dummy token to pass preflight checks
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monkeypatch.setenv("HF_TOKEN", "dummy-token")
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# Mock preflight to succeed and pull to timeout
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with patch('mlxk2.operations.pull.preflight_repo_access', return_value=(True, None)), \
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patch('mlxk2.operations.pull.pull_model_with_huggingface_hub', side_effect=TimeoutError("Network timeout")):
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result = pull_operation("test-model")
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assert result["status"] == "error"
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assert "timeout" in result["error"]["message"].lower() or "network" in result["error"]["message"].lower() or "error" in result["error"]["message"].lower()
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def test_pull_disk_space_validation(self, isolated_cache):
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"""Test pull checks available disk space before download."""
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# Mock disk space check
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with patch('shutil.disk_usage', return_value=(1000, 900, 100)): # Only 100 bytes free
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result = pull_operation("mlx-community/Phi-3-mini-4k-instruct-4bit")
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# Should either succeed (if no disk check implemented) or fail gracefully
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assert result["status"] in ["success", "error"]
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if result["status"] == "error":
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# Error message should be helpful
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assert len(result["error"]["message"]) > 0
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def test_pull_invalid_repo_early_validation(self):
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"""Test pull validates repo format before network calls."""
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invalid_repos = [
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"", # Empty
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"no-slash", # No org/model format (might be valid short name though)
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"org//model", # Double slash
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"/org/model", # Leading slash
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"org/model/", # Trailing slash
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]
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for invalid_repo in invalid_repos:
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if not invalid_repo.strip(): # Skip empty strings
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result = pull_operation(invalid_repo)
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assert result["status"] == "error"
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assert len(result["error"]["message"]) > 0
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def test_pull_concurrent_download_prevention(self, mock_models):
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"""Test pull prevents concurrent downloads of same model."""
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model_name = "test-concurrent-model"
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# Mock a long-running download
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with patch('subprocess.run', side_effect=lambda *args, **kwargs: __import__('time').sleep(0.1)):
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# Start first download (simulate in progress)
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import threading
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first_result = [None]
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def first_download():
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first_result[0] = pull_operation(model_name)
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# Start first download in background
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thread1 = threading.Thread(target=first_download)
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thread1.start()
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# Try concurrent download (should detect ongoing download)
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result2 = pull_operation(model_name)
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thread1.join(timeout=1.0) # Wait for first to complete
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# At least one should complete successfully, and system should handle concurrent access
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assert isinstance(result2, dict)
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assert result2["status"] in ["success", "error"]
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class TestCacheIntegrityRobustness:
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"""Test cache integrity and corruption handling."""
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def test_operations_with_corrupted_cache_entries(self, create_corrupted_cache_entry):
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"""Test that operations handle corrupted cache entries gracefully."""
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# Create corrupted entry
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cache_path = create_corrupted_cache_entry("models--corrupted---entry").parent
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# List should not crash with corrupted entries
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from conftest import test_list_models
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result = test_list_models(cache_path)
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assert result["status"] == "success"
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# Should include corrupted entry but mark it as such
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corrupted_models = [m for m in result["data"]["models"] if "/-" in m["name"] or m["name"].startswith("-")]
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assert len(corrupted_models) >= 1
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def test_cache_recovery_after_interruption(self, isolated_cache):
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"""Test system recovers gracefully from interrupted operations."""
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# Create partial model directory (simulate interrupted download)
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partial_model_dir = isolated_cache / "models--test--partial-model"
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partial_model_dir.mkdir(parents=True)
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# Create snapshots dir but no content (interrupted state)
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snapshots_dir = partial_model_dir / "snapshots"
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snapshots_dir.mkdir()
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# Operations should handle partial state
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from conftest import test_list_models
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result = test_list_models(isolated_cache)
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assert result["status"] == "success"
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# Should either exclude partial model or mark it as unhealthy
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model_names = [m["name"] for m in result["data"]["models"]]
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if "test/partial-model" in model_names:
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# If included, should be marked somehow as problematic
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partial_model = next(m for m in result["data"]["models"] if m["name"] == "test/partial-model")
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# Could be marked with different framework or size indicating incomplete
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assert partial_model is not None
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if __name__ == "__main__":
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pytest.main([__file__, "-v"]) |