Add sys import to test files and remove obsolete integration tests

- Add sys import to 29 test files across agent-coordinator, blockchain-event-bridge, blockchain-node, and coordinator-api
- Remove apps/blockchain-event-bridge/tests/test_integration.py (obsolete bridge integration tests)
- Remove apps/coordinator-api/tests/test_integration.py (obsolete API integration tests)
- Implement GPU registration in marketplace_gpu.py with GPURegistry model persistence

apps/compliance-service/tests/test_unit_compliance_service.py

@@ -0,0 +1,161 @@
+"""Unit tests for compliance service"""
+
+import pytest
+import sys
+import sys
+from pathlib import Path
+from unittest.mock import Mock, patch
+from datetime import datetime
+
+
+from main import app, KYCRequest, ComplianceReport, TransactionMonitoring, calculate_transaction_risk, check_suspicious_patterns
+
+
+@pytest.mark.unit
+def test_app_initialization():
+    """Test that the FastAPI app initializes correctly"""
+    assert app is not None
+    assert app.title == "AITBC Compliance Service"
+    assert app.version == "1.0.0"
+
+
+@pytest.mark.unit
+def test_kyc_request_model():
+    """Test KYCRequest model"""
+    kyc = KYCRequest(
+        user_id="user123",
+        name="John Doe",
+        email="john@example.com",
+        document_type="passport",
+        document_number="ABC123",
+        address={"street": "123 Main St", "city": "New York", "country": "USA"}
+    )
+    assert kyc.user_id == "user123"
+    assert kyc.name == "John Doe"
+    assert kyc.email == "john@example.com"
+    assert kyc.document_type == "passport"
+    assert kyc.document_number == "ABC123"
+    assert kyc.address["city"] == "New York"
+
+
+@pytest.mark.unit
+def test_compliance_report_model():
+    """Test ComplianceReport model"""
+    report = ComplianceReport(
+        report_type="suspicious_activity",
+        description="Suspicious transaction detected",
+        severity="high",
+        details={"transaction_id": "tx123"}
+    )
+    assert report.report_type == "suspicious_activity"
+    assert report.description == "Suspicious transaction detected"
+    assert report.severity == "high"
+    assert report.details["transaction_id"] == "tx123"
+
+
+@pytest.mark.unit
+def test_transaction_monitoring_model():
+    """Test TransactionMonitoring model"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=1000.0,
+        currency="BTC",
+        counterparty="counterparty1",
+        timestamp=datetime.utcnow()
+    )
+    assert tx.transaction_id == "tx123"
+    assert tx.user_id == "user123"
+    assert tx.amount == 1000.0
+    assert tx.currency == "BTC"
+    assert tx.counterparty == "counterparty1"
+
+
+@pytest.mark.unit
+def test_calculate_transaction_risk_low():
+    """Test risk calculation for low risk transaction"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=50.0,
+        currency="BTC",
+        counterparty="counterparty1",
+        timestamp=datetime(2026, 1, 1, 10, 0, 0)  # Business hours
+    )
+    risk = calculate_transaction_risk(tx)
+    assert risk == "low"
+
+
+@pytest.mark.unit
+def test_calculate_transaction_risk_medium():
+    """Test risk calculation for medium risk transaction"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=5000.0,
+        currency="BTC",
+        counterparty="counterparty1",
+        timestamp=datetime(2026, 1, 1, 10, 0, 0)
+    )
+    risk = calculate_transaction_risk(tx)
+    assert risk == "medium"
+
+
+@pytest.mark.unit
+def test_calculate_transaction_risk_high():
+    """Test risk calculation for high risk transaction"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=20000.0,
+        currency="BTC",
+        counterparty="counterparty1",
+        timestamp=datetime(2026, 1, 1, 8, 0, 0)  # Outside business hours
+    )
+    risk = calculate_transaction_risk(tx)
+    assert risk == "high"
+
+
+@pytest.mark.unit
+def test_check_suspicious_patterns_high_value():
+    """Test suspicious pattern detection for high value"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=100000.0,
+        currency="BTC",
+        counterparty="counterparty1",
+        timestamp=datetime.utcnow()
+    )
+    flags = check_suspicious_patterns(tx)
+    assert "high_value_transaction" in flags
+
+
+@pytest.mark.unit
+def test_check_suspicious_patterns_high_risk_counterparty():
+    """Test suspicious pattern detection for high risk counterparty"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=1000.0,
+        currency="BTC",
+        counterparty="high_risk_entity_1",
+        timestamp=datetime.utcnow()
+    )
+    flags = check_suspicious_patterns(tx)
+    assert "high_risk_counterparty" in flags
+
+
+@pytest.mark.unit
+def test_check_suspicious_patterns_none():
+    """Test suspicious pattern detection with no flags"""
+    tx = TransactionMonitoring(
+        transaction_id="tx123",
+        user_id="user123",
+        amount=1000.0,
+        currency="BTC",
+        counterparty="safe_counterparty",
+        timestamp=datetime.utcnow()
+    )
+    flags = check_suspicious_patterns(tx)
+    assert len(flags) == 0