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/plugin-security/tests/test_unit_plugin_security.py

@@ -0,0 +1,205 @@
+"""Unit tests for plugin security service"""
+
+import pytest
+import sys
+import sys
+from pathlib import Path
+from datetime import datetime
+
+
+from main import app, SecurityScan, Vulnerability, SecurityReport, calculate_overall_score, generate_recommendations, get_severity_distribution, estimate_scan_time
+
+
+@pytest.mark.unit
+def test_app_initialization():
+    """Test that the FastAPI app initializes correctly"""
+    assert app is not None
+    assert app.title == "AITBC Plugin Security Service"
+    assert app.version == "1.0.0"
+
+
+@pytest.mark.unit
+def test_security_scan_model():
+    """Test SecurityScan model"""
+    scan = SecurityScan(
+        plugin_id="plugin_123",
+        version="1.0.0",
+        plugin_type="cli",
+        scan_type="comprehensive",
+        priority="high"
+    )
+    assert scan.plugin_id == "plugin_123"
+    assert scan.version == "1.0.0"
+    assert scan.plugin_type == "cli"
+    assert scan.scan_type == "comprehensive"
+    assert scan.priority == "high"
+
+
+@pytest.mark.unit
+def test_vulnerability_model():
+    """Test Vulnerability model"""
+    vuln = Vulnerability(
+        cve_id="CVE-2023-1234",
+        severity="high",
+        title="Buffer Overflow",
+        description="Buffer overflow vulnerability",
+        affected_file="file.py",
+        line_number=42,
+        recommendation="Update to latest version"
+    )
+    assert vuln.cve_id == "CVE-2023-1234"
+    assert vuln.severity == "high"
+    assert vuln.title == "Buffer Overflow"
+    assert vuln.line_number == 42
+
+
+@pytest.mark.unit
+def test_vulnerability_model_optional_fields():
+    """Test Vulnerability model with optional fields"""
+    vuln = Vulnerability(
+        cve_id=None,
+        severity="low",
+        title="Minor issue",
+        description="Description",
+        affected_file="file.py",
+        line_number=None,
+        recommendation="Fix it"
+    )
+    assert vuln.cve_id is None
+    assert vuln.line_number is None
+
+
+@pytest.mark.unit
+def test_security_report_model():
+    """Test SecurityReport model"""
+    report = SecurityReport(
+        scan_id="scan_123",
+        plugin_id="plugin_123",
+        version="1.0.0",
+        scan_date=datetime.utcnow(),
+        scan_duration=120.5,
+        overall_score="passed",
+        vulnerabilities=[],
+        security_metrics={},
+        recommendations=[]
+    )
+    assert report.scan_id == "scan_123"
+    assert report.overall_score == "passed"
+    assert report.scan_duration == 120.5
+
+
+@pytest.mark.unit
+def test_calculate_overall_score_passed():
+    """Test calculate overall score with no vulnerabilities"""
+    scan_result = {"vulnerabilities": []}
+    score = calculate_overall_score(scan_result)
+    assert score == "passed"
+
+
+@pytest.mark.unit
+def test_calculate_overall_score_critical():
+    """Test calculate overall score with critical vulnerability"""
+    scan_result = {
+        "vulnerabilities": [
+            {"severity": "critical"},
+            {"severity": "low"}
+        ]
+    }
+    score = calculate_overall_score(scan_result)
+    assert score == "critical"
+
+
+@pytest.mark.unit
+def test_calculate_overall_score_failed():
+    """Test calculate overall score with multiple high vulnerabilities"""
+    scan_result = {
+        "vulnerabilities": [
+            {"severity": "high"},
+            {"severity": "high"},
+            {"severity": "high"}
+        ]
+    }
+    score = calculate_overall_score(scan_result)
+    assert score == "failed"
+
+
+@pytest.mark.unit
+def test_calculate_overall_score_warning():
+    """Test calculate overall score with high and medium vulnerabilities"""
+    scan_result = {
+        "vulnerabilities": [
+            {"severity": "high"},
+            {"severity": "medium"},
+            {"severity": "medium"},
+            {"severity": "medium"},
+            {"severity": "medium"},
+            {"severity": "medium"}
+        ]
+    }
+    score = calculate_overall_score(scan_result)
+    assert score == "warning"
+
+
+@pytest.mark.unit
+def test_generate_recommendations_no_vulnerabilities():
+    """Test generate recommendations with no vulnerabilities"""
+    recommendations = generate_recommendations([])
+    assert len(recommendations) == 1
+    assert "No security issues detected" in recommendations[0]
+
+
+@pytest.mark.unit
+def test_generate_recommendations_critical():
+    """Test generate recommendations with critical vulnerabilities"""
+    vulnerabilities = [
+        {"severity": "critical"},
+        {"severity": "high"}
+    ]
+    recommendations = generate_recommendations(vulnerabilities)
+    assert any("CRITICAL" in r for r in recommendations)
+    assert any("HIGH" in r for r in recommendations)
+
+
+@pytest.mark.unit
+def test_get_severity_distribution():
+    """Test get severity distribution"""
+    vulnerabilities = [
+        {"severity": "critical"},
+        {"severity": "high"},
+        {"severity": "high"},
+        {"severity": "medium"},
+        {"severity": "low"}
+    ]
+    distribution = get_severity_distribution(vulnerabilities)
+    assert distribution["critical"] == 1
+    assert distribution["high"] == 2
+    assert distribution["medium"] == 1
+    assert distribution["low"] == 1
+
+
+@pytest.mark.unit
+def test_estimate_scan_time_basic():
+    """Test estimate scan time for basic scan"""
+    time = estimate_scan_time("basic")
+    assert time == "1-2 minutes"
+
+
+@pytest.mark.unit
+def test_estimate_scan_time_comprehensive():
+    """Test estimate scan time for comprehensive scan"""
+    time = estimate_scan_time("comprehensive")
+    assert time == "5-10 minutes"
+
+
+@pytest.mark.unit
+def test_estimate_scan_time_deep():
+    """Test estimate scan time for deep scan"""
+    time = estimate_scan_time("deep")
+    assert time == "15-30 minutes"
+
+
+@pytest.mark.unit
+def test_estimate_scan_time_unknown():
+    """Test estimate scan time for unknown scan type"""
+    time = estimate_scan_time("unknown")
+    assert time == "5-10 minutes"