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import json
import tempfile
import time
from pathlib import Path
import pytest
from mosaic.telemetry import TelemetryTracker, TelemetryConfig
@pytest.fixture
def temp_dir():
"""Create a temporary directory for telemetry storage."""
with tempfile.TemporaryDirectory() as tmpdir:
yield Path(tmpdir)
@pytest.fixture
def tracker(temp_dir):
"""Create a fresh tracker instance for each test."""
TelemetryTracker.reset_instance()
config = TelemetryConfig(
enabled=True,
base_dir=temp_dir,
hourly_rate=0.40,
idle_timeout_min=30,
is_hf_spaces=False,
)
tracker = TelemetryTracker.get_instance(config)
yield tracker
TelemetryTracker.reset_instance()
class TestTelemetryTrackerSingleton:
"""Tests for singleton behavior."""
def test_get_instance_returns_same_instance(self, temp_dir):
"""Test that get_instance always returns the same instance."""
TelemetryTracker.reset_instance()
config = TelemetryConfig(base_dir=temp_dir)
tracker1 = TelemetryTracker.get_instance(config)
tracker2 = TelemetryTracker.get_instance()
assert tracker1 is tracker2
TelemetryTracker.reset_instance()
def test_reset_instance_creates_new_instance(self, temp_dir):
"""Test that reset_instance allows creating a new instance."""
TelemetryTracker.reset_instance()
config = TelemetryConfig(base_dir=temp_dir)
tracker1 = TelemetryTracker.get_instance(config)
TelemetryTracker.reset_instance()
tracker2 = TelemetryTracker.get_instance(config)
assert tracker1 is not tracker2
TelemetryTracker.reset_instance()
class TestAppSessionEvents:
"""Tests for app session event logging."""
def test_log_app_start(self, tracker, temp_dir):
"""Test logging app start event."""
tracker.log_app_start()
session_files = list((temp_dir / "daily").glob("session_*.jsonl"))
assert len(session_files) == 1
with open(session_files[0]) as f:
event = json.loads(f.read().strip())
assert event["event_type"] == "app_start"
assert event["uptime_sec"] == 0.0
assert event["analysis_count"] == 0
assert event["estimated_cost_usd"] == 0.0
def test_log_heartbeat(self, tracker, temp_dir):
"""Test logging heartbeat event."""
tracker.log_app_start()
time.sleep(0.1) # Small delay to accumulate uptime
tracker.log_heartbeat()
session_files = list((temp_dir / "daily").glob("session_*.jsonl"))
assert len(session_files) == 1
with open(session_files[0]) as f:
lines = f.readlines()
assert len(lines) == 2
heartbeat = json.loads(lines[1])
assert heartbeat["event_type"] == "heartbeat"
assert heartbeat["uptime_sec"] > 0
def test_log_app_shutdown(self, tracker, temp_dir):
"""Test logging app shutdown event."""
tracker.log_app_start()
tracker.log_app_shutdown()
session_files = list((temp_dir / "daily").glob("session_*.jsonl"))
with open(session_files[0]) as f:
lines = f.readlines()
shutdown = json.loads(lines[-1])
assert shutdown["event_type"] == "app_shutdown"
class TestUsageEvents:
"""Tests for usage event logging."""
def test_log_analysis_start(self, tracker, temp_dir):
"""Test logging analysis start event."""
tracker.log_usage_event(
event_type="analysis_start",
analysis_id="test-123",
slide_count=5,
session_hash="abc123",
site_type="Primary",
cancer_subtype="LUAD",
seg_config="Biopsy",
gpu_type="T4",
)
usage_files = list((temp_dir / "daily").glob("usage_*.jsonl"))
assert len(usage_files) == 1
with open(usage_files[0]) as f:
event = json.loads(f.read().strip())
assert event["event_type"] == "analysis_start"
assert event["analysis_id"] == "test-123"
assert event["slide_count"] == 5
assert event["site_type"] == "Primary"
# Session hash should be hashed
assert event["session_hash"] is not None
assert event["session_hash"] != "abc123"
def test_log_usage_event_with_user_info(self, tracker, temp_dir):
"""Test that is_logged_in and hf_username are persisted in usage events."""
tracker.log_usage_event(
event_type="analysis_start",
analysis_id="test-user-info",
slide_count=1,
is_logged_in=True,
hf_username="testuser",
)
usage_files = list((temp_dir / "daily").glob("usage_*.jsonl"))
with open(usage_files[0]) as f:
event = json.loads(f.read().strip())
assert event["is_logged_in"] is True
assert event["hf_username"] == "testuser"
def test_log_analysis_complete(self, tracker, temp_dir):
"""Test logging analysis complete event."""
tracker.log_app_start()
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-123",
slide_count=5,
duration_sec=120.5,
success=True,
gpu_type="T4",
)
usage_files = list((temp_dir / "daily").glob("usage_*.jsonl"))
with open(usage_files[0]) as f:
event = json.loads(f.read().strip())
assert event["event_type"] == "analysis_complete"
assert event["duration_sec"] == 120.5
assert event["success"] is True
def test_analysis_complete_updates_session_metrics(self, tracker):
"""Test that analysis complete updates session metrics."""
tracker.log_app_start()
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-1",
slide_count=3,
duration_sec=60.0,
success=True,
)
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-2",
slide_count=2,
duration_sec=45.0,
success=True,
)
metrics = tracker._get_session_metrics()
assert metrics["analysis_count"] == 2
assert metrics["analysis_time_sec"] == 105.0
def test_log_usage_event_with_cached_slides(self, tracker, temp_dir):
"""Test that cached_slide_count is persisted in usage events."""
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-cache",
slide_count=10,
duration_sec=50.0,
success=True,
cached_slide_count=3,
)
usage_files = list((temp_dir / "daily").glob("usage_*.jsonl"))
with open(usage_files[0]) as f:
event = json.loads(f.read().strip())
assert event["cached_slide_count"] == 3
def test_fully_cached_analysis_excludes_duration_from_metrics(self, tracker):
"""Test that fully cached analyses don't count toward analysis_time_sec."""
tracker.log_app_start()
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-cache",
slide_count=5,
duration_sec=2.0,
success=True,
cached_slide_count=5, # All slides cached
)
metrics = tracker._get_session_metrics()
assert metrics["analysis_count"] == 1
assert metrics["analysis_time_sec"] == 0.0
def test_mixed_cache_analysis_includes_duration_in_metrics(self, tracker):
"""Test that mixed analyses (some cached) count toward analysis_time_sec."""
tracker.log_app_start()
tracker.log_usage_event(
event_type="analysis_complete",
analysis_id="test-mixed",
slide_count=10,
duration_sec=60.0,
success=True,
cached_slide_count=3, # Only 3/10 cached
)
metrics = tracker._get_session_metrics()
assert metrics["analysis_count"] == 1
assert metrics["analysis_time_sec"] == 60.0
class TestResourceEvents:
"""Tests for resource event logging."""
def test_log_resource_event(self, tracker, temp_dir):
"""Test logging resource event."""
tracker.log_resource_event(
analysis_id="test-123",
session_hash="abc123",
total_duration_sec=180.5,
tile_count=1000,
filtered_tile_count=800,
gpu_type="T4",
peak_gpu_memory_gb=12.5,
)
resource_files = list((temp_dir / "daily").glob("resource_*.jsonl"))
assert len(resource_files) == 1
with open(resource_files[0]) as f:
event = json.loads(f.read().strip())
assert event["analysis_id"] == "test-123"
assert event["total_duration_sec"] == 180.5
assert event["tile_count"] == 1000
assert event["peak_gpu_memory_gb"] == 12.5
def test_log_resource_event_with_user_info(self, tracker, temp_dir):
"""Test that is_logged_in and hf_username are persisted in resource events."""
tracker.log_resource_event(
analysis_id="test-user-info",
total_duration_sec=60.0,
is_logged_in=True,
hf_username="testuser",
)
resource_files = list((temp_dir / "daily").glob("resource_*.jsonl"))
with open(resource_files[0]) as f:
event = json.loads(f.read().strip())
assert event["is_logged_in"] is True
assert event["hf_username"] == "testuser"
class TestFailureEvents:
"""Tests for failure event logging."""
def test_log_failure_event(self, tracker, temp_dir):
"""Test logging failure event."""
tracker.log_failure_event(
error_type="ValueError",
error_message="Invalid slide format",
error_stage="upload",
analysis_id="test-123",
slide_count=1,
gpu_type="T4",
)
failure_files = list((temp_dir / "daily").glob("failure_*.jsonl"))
assert len(failure_files) == 1
with open(failure_files[0]) as f:
event = json.loads(f.read().strip())
assert event["error_type"] == "ValueError"
assert event["error_stage"] == "upload"
assert event["analysis_id"] == "test-123"
def test_log_failure_event_with_user_info(self, tracker, temp_dir):
"""Test that is_logged_in and hf_username are persisted in failure events."""
tracker.log_failure_event(
error_type="ValueError",
error_message="test error",
error_stage="upload",
is_logged_in=False,
hf_username=None,
)
failure_files = list((temp_dir / "daily").glob("failure_*.jsonl"))
with open(failure_files[0]) as f:
event = json.loads(f.read().strip())
assert event["is_logged_in"] is False
assert event["hf_username"] is None
def test_error_message_sanitized(self, tracker, temp_dir):
"""Test that error messages are sanitized."""
tracker.log_failure_event(
error_type="FileNotFoundError",
error_message="File not found: /home/user/secret/data.svs",
error_stage="upload",
)
failure_files = list((temp_dir / "daily").glob("failure_*.jsonl"))
with open(failure_files[0]) as f:
event = json.loads(f.read().strip())
# Path should be sanitized
assert "/home/user" not in event["error_message"]
assert "[PATH]" in event["error_message"]
class TestDisabledTelemetry:
"""Tests for disabled telemetry."""
def test_disabled_telemetry_no_events(self, temp_dir):
"""Test that disabled telemetry doesn't write events."""
TelemetryTracker.reset_instance()
config = TelemetryConfig(
enabled=False,
base_dir=temp_dir,
)
tracker = TelemetryTracker.get_instance(config)
tracker.log_app_start()
tracker.log_usage_event(
event_type="analysis_start",
analysis_id="test",
slide_count=1,
)
# No files should be created
all_files = list((temp_dir / "daily").glob("*.jsonl"))
assert len(all_files) == 0
TelemetryTracker.reset_instance()
class TestCostCalculation:
"""Tests for cost calculation."""
def test_cost_calculation(self, tracker):
"""Test cost calculation formula."""
# Test with 1 hour of uptime at $0.40/hr
cost = tracker._calculate_cost(3600) # 1 hour in seconds
assert cost == 0.40
def test_cost_in_session_events(self, tracker, temp_dir):
"""Test that cost is included in session events."""
tracker.log_app_start()
time.sleep(0.1)
tracker.log_app_shutdown()
session_files = list((temp_dir / "daily").glob("session_*.jsonl"))
with open(session_files[0]) as f:
lines = f.readlines()
shutdown = json.loads(lines[-1])
assert "estimated_cost_usd" in shutdown
assert shutdown["estimated_cost_usd"] >= 0
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