File size: 6,695 Bytes
a963d65
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
"""
TDD Tests for FHIR Validation
Focus on healthcare-grade FHIR R4 compliance
"""

import pytest
import json
from unittest.mock import Mock, patch
from typing import Dict, Any

# Will fail initially - TDD RED phase
try:
    from src.fhir_validator import FhirValidator
except ImportError:
    FhirValidator = None


class TestFhirValidatorTDD:
    """TDD tests for FHIR validation - healthcare grade"""
    
    def setup_method(self):
        """Setup test FHIR bundles"""
        self.valid_fhir_bundle = {
            "resourceType": "Bundle",
            "id": "test-bundle",
            "type": "document",
            "timestamp": "2025-06-03T00:00:00Z",
            "entry": [
                {
                    "resource": {
                        "resourceType": "Patient",
                        "id": "test-patient",
                        "identifier": [{"value": "123456789"}],
                        "name": [{"given": ["John"], "family": "Doe"}],
                        "birthDate": "1980-01-01"
                    }
                },
                {
                    "resource": {
                        "resourceType": "Observation",
                        "id": "test-observation",
                        "status": "final",
                        "code": {
                            "coding": [{
                                "system": "http://loinc.org",
                                "code": "85354-9",
                                "display": "Blood pressure"
                            }]
                        },
                        "subject": {"reference": "Patient/test-patient"},
                        "valueString": "140/90 mmHg"
                    }
                }
            ]
        }
        
        self.invalid_fhir_bundle = {
            "resourceType": "InvalidType",
            "entry": []
        }

    @pytest.mark.unit
    def test_fhir_validator_initialization(self):
        """Test: FHIR validator initializes correctly"""
        # Given: FHIR validator configuration
        # When: Creating validator
        validator = FhirValidator()
        
        # Then: Should initialize with healthcare-grade settings
        assert validator is not None
        assert validator.validation_level == 'healthcare_grade'
        assert validator.fhir_version == 'R4'

    @pytest.mark.unit
    def test_validate_valid_fhir_bundle(self):
        """Test: Valid FHIR bundle passes validation"""
        # Given: Valid FHIR bundle
        validator = FhirValidator()
        bundle = self.valid_fhir_bundle
        
        # When: Validating bundle
        result = validator.validate_bundle(bundle)
        
        # Then: Should pass validation
        assert result['is_valid'] is True
        assert result['compliance_score'] > 0.9
        assert len(result['errors']) == 0
        assert result['fhir_r4_compliant'] is True

    @pytest.mark.unit
    def test_validate_invalid_fhir_bundle(self):
        """Test: Invalid FHIR bundle fails validation"""
        # Given: Invalid FHIR bundle
        validator = FhirValidator()
        bundle = self.invalid_fhir_bundle
        
        # When: Validating bundle
        result = validator.validate_bundle(bundle)
        
        # Then: Should fail validation
        assert result['is_valid'] is False
        assert result['compliance_score'] < 0.5
        assert len(result['errors']) > 0
        assert result['fhir_r4_compliant'] is False

    @pytest.mark.unit
    def test_validate_fhir_structure(self):
        """Test: FHIR structure validation"""
        # Given: FHIR bundle with structure issues
        validator = FhirValidator()
        
        # When: Validating structure
        result = validator.validate_structure(self.valid_fhir_bundle)
        
        # Then: Should validate structure correctly
        assert result['structure_valid'] is True
        assert 'Bundle' in result['detected_resources']
        assert 'Patient' in result['detected_resources']
        assert 'Observation' in result['detected_resources']

    @pytest.mark.unit
    def test_validate_medical_terminology(self):
        """Test: Medical terminology validation (LOINC, SNOMED CT)"""
        # Given: FHIR bundle with medical codes
        validator = FhirValidator()
        bundle = self.valid_fhir_bundle
        
        # When: Validating terminology
        result = validator.validate_terminology(bundle)
        
        # Then: Should validate medical codes
        assert result['terminology_valid'] is True
        assert result['loinc_codes_valid'] is True
        assert 'validated_codes' in result
        assert len(result['validated_codes']) > 0

    @pytest.mark.unit
    def test_validate_hipaa_compliance(self):
        """Test: HIPAA compliance validation"""
        # Given: FHIR bundle
        validator = FhirValidator()
        bundle = self.valid_fhir_bundle
        
        # When: Checking HIPAA compliance
        result = validator.validate_hipaa_compliance(bundle)
        
        # Then: Should check HIPAA requirements
        assert result['hipaa_compliant'] is True
        assert result['phi_protection'] is True
        assert result['security_tags_present'] is False  # Test data has no security tags

    @pytest.mark.unit
    def test_calculate_compliance_score(self):
        """Test: Compliance score calculation"""
        # Given: Validation results
        validator = FhirValidator()
        validation_data = {
            'structure_valid': True,
            'terminology_valid': True,
            'hipaa_compliant': True,
            'fhir_r4_compliant': True
        }
        
        # When: Calculating compliance score
        score = validator.calculate_compliance_score(validation_data)
        
        # Then: Should return high compliance score
        assert score >= 0.95
        assert isinstance(score, float)
        assert 0.0 <= score <= 1.0

    @pytest.mark.unit
    def test_validate_with_healthcare_grade_level(self):
        """Test: Healthcare-grade validation level"""
        # Given: Validator with healthcare-grade settings
        validator = FhirValidator(validation_level='healthcare_grade')
        bundle = self.valid_fhir_bundle
        
        # When: Validating with strict healthcare standards
        result = validator.validate_bundle(bundle, validation_level='healthcare_grade')
        
        # Then: Should apply strict healthcare validation
        assert result['validation_level'] == 'healthcare_grade'
        assert result['strict_mode'] is True
        assert result['medical_coding_validated'] is True
        assert result['interoperability_score'] > 0.9