libverify-core 0.13.1

Platform-agnostic SDLC verification engine — evidence model, controls, assessment
Documentation 
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

use crate::control::{Control, ControlFinding, ControlId, builtin};
use crate::evidence::{EvidenceBundle, EvidenceState, PromotionBatch};

/// Verifies that release promotion batches have linked change requests.
///
/// Maps to SOC2 CC7.1: change traceability through the release pipeline.
/// Every release should trace back to governed change requests (PRs) to
/// maintain a complete audit trail from code change to production deployment.
pub struct ReleaseTraceabilityControl;

impl Control for ReleaseTraceabilityControl {
    fn id(&self) -> ControlId {
        builtin::id(builtin::RELEASE_TRACEABILITY)
    }

    fn description(&self) -> &'static str {
        "Release batches must trace to governed change requests"
    }

    fn evaluate(&self, evidence: &EvidenceBundle) -> Vec<ControlFinding> {
        if evidence.promotion_batches.is_empty() {
            return vec![ControlFinding::not_applicable(
                self.id(),
                "No promotion batches found",
            )];
        }

        evidence
            .promotion_batches
            .iter()
            .map(|batch| evaluate_batch(self.id(), batch))
            .collect()
    }
}

fn evaluate_batch(id: ControlId, batch: &PromotionBatch) -> ControlFinding {
    let batch_subject = batch.id.clone();

    match &batch.linked_change_requests {
        EvidenceState::NotApplicable => {
            ControlFinding::not_applicable(id, "Linked change requests not applicable")
        }
        EvidenceState::Missing { gaps } => ControlFinding::indeterminate(
            id,
            format!("{batch_subject}: linked change request evidence could not be collected"),
            vec![batch_subject],
            gaps.clone(),
        ),
        EvidenceState::Complete { value } | EvidenceState::Partial { value, .. } => {
            if value.is_empty() {
                ControlFinding::violated(
                    id,
                    format!(
                        "{batch_subject}: no linked change requests found — release has no CR traceability"
                    ),
                    vec![batch_subject],
                )
            } else {
                let cr_ids: Vec<String> = value.iter().map(|cr| cr.to_string()).collect();
                ControlFinding::satisfied(
                    id,
                    format!(
                        "{batch_subject}: traces to {} change request(s)",
                        value.len()
                    ),
                    cr_ids,
                )
            }
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::control::ControlStatus;
    use crate::evidence::{ChangeRequestId, EvidenceGap, SourceRevision};

    fn make_batch(linked_crs: EvidenceState<Vec<ChangeRequestId>>) -> PromotionBatch {
        PromotionBatch {
            id: "github_release:owner/repo:v0.1.0..v0.2.0".to_string(),
            source_revisions: EvidenceState::complete(vec![SourceRevision {
                id: "abc123".to_string(),
                authored_by: Some("dev".to_string()),
                committed_at: None,
                merge: false,
                authenticity: EvidenceState::not_applicable(),
            }]),
            linked_change_requests: linked_crs,
        }
    }

    fn bundle(batches: Vec<PromotionBatch>) -> EvidenceBundle {
        EvidenceBundle {
            promotion_batches: batches,
            ..Default::default()
        }
    }

    #[test]
    fn not_applicable_when_no_batches() {
        let findings = ReleaseTraceabilityControl.evaluate(&EvidenceBundle::default());
        assert_eq!(findings[0].status, ControlStatus::NotApplicable);
    }

    #[test]
    fn satisfied_when_crs_linked() {
        let batch = make_batch(EvidenceState::complete(vec![
            ChangeRequestId::new("test", "owner/repo#1"),
            ChangeRequestId::new("test", "owner/repo#2"),
        ]));
        let findings = ReleaseTraceabilityControl.evaluate(&bundle(vec![batch]));
        assert_eq!(findings[0].status, ControlStatus::Satisfied);
        assert!(findings[0].rationale.contains("2 change request(s)"));
    }

    #[test]
    fn violated_when_no_crs_linked() {
        let batch = make_batch(EvidenceState::complete(vec![]));
        let findings = ReleaseTraceabilityControl.evaluate(&bundle(vec![batch]));
        assert_eq!(findings[0].status, ControlStatus::Violated);
        assert!(findings[0].rationale.contains("no linked change requests"));
    }

    #[test]
    fn indeterminate_when_evidence_missing() {
        let batch = make_batch(EvidenceState::missing(vec![
            EvidenceGap::CollectionFailed {
                source: "github".to_string(),
                subject: "commits".to_string(),
                detail: "API error".to_string(),
            },
        ]));
        let findings = ReleaseTraceabilityControl.evaluate(&bundle(vec![batch]));
        assert_eq!(findings[0].status, ControlStatus::Indeterminate);
    }

    #[test]
    fn not_applicable_when_crs_not_applicable() {
        let batch = make_batch(EvidenceState::not_applicable());
        let findings = ReleaseTraceabilityControl.evaluate(&bundle(vec![batch]));
        assert_eq!(findings[0].status, ControlStatus::NotApplicable);
    }
}