lsp-max 26.7.1

Law-state LSP runtime: max LSP 3.18 coverage, process-mining conformance, receipt-chain admission
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
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
187
188
189
190
191
192

use super::*;
use crate::runtime::control_plane::receipts::{Blake3Hash, CryptographicReceipt};
use ed25519_dalek::Signer;
use oxigraph::model::{GraphName, Literal, NamedNode, NamedOrBlankNode, Quad, Term};
use oxigraph::sparql::{QueryResults, SparqlEvaluator};
use oxigraph::store::Store;
use rand_core::RngCore;

#[test]
fn test_xorshift_rng_determinism() {
    let mut rng1 = XorshiftRng::new(42);
    let mut rng2 = XorshiftRng::new(42);
    assert_eq!(rng1.next_u64(), rng2.next_u64());
    assert_eq!(rng1.next_u32(), rng2.next_u32());
}

#[test]
fn test_replay_clock_formatting() {
    let clock = ReplayClock::new(1772886586000);
    let iso = clock.now_iso();
    assert_eq!(iso, "2026-03-07T12:29:46Z");
}

#[test]
fn test_preprocess_query_now_rand() {
    let clock = ReplayClock::new(1772886586000);
    let mut entropy = ReplayEntropy::new(42);

    let query = "SELECT (now() AS ?time) (rand() AS ?r) WHERE { ?s ?p ?o }";
    let preprocessed = preprocess_query(query, &clock, &mut entropy);

    assert!(preprocessed
        .contains("\"2026-03-07T12:29:46Z\"^^<http://www.w3.org/2001/XMLSchema#dateTime>"));
    assert!(!preprocessed.contains("rand()"));

    let query2 = "SELECT ?brand WHERE { ?s brand:now() ?o }";
    let preprocessed2 = preprocess_query(query2, &clock, &mut entropy);
    assert!(preprocessed2.contains("brand:now()"));
}

#[test]
fn test_hash_query_results_boolean() {
    let res_t = QueryResults::Boolean(true);
    let hash_t = hash_query_results(res_t).unwrap();
    let res_f = QueryResults::Boolean(false);
    let hash_f = hash_query_results(res_f).unwrap();
    assert_ne!(hash_t, hash_f);
}

#[test]
fn test_verifier_end_to_end() {
    let store = Store::new().unwrap();

    // 1. Setup a graph snapshot
    let snap_graph = GraphName::NamedNode(NamedNode::new("urn:project:local:snapshot:g1").unwrap());
    store
        .insert(&Quad::new(
            NamedOrBlankNode::NamedNode(NamedNode::new("urn:project:s1").unwrap()),
            NamedNode::new("urn:project:p1").unwrap(),
            Term::Literal(Literal::new_simple_literal("hello")),
            snap_graph.clone(),
        ))
        .unwrap();

    // 2. Setup a query registry
    let query_str = "SELECT ?val WHERE { ?s <urn:project:p1> ?val }";
    let query_hash = crate::runtime::sha256(query_str.as_bytes());

    // 3. Compute expected hash by running on an isolated store
    let isolated = Store::new().unwrap();
    isolated
        .insert(&Quad::new(
            NamedOrBlankNode::NamedNode(NamedNode::new("urn:project:s1").unwrap()),
            NamedNode::new("urn:project:p1").unwrap(),
            Term::Literal(Literal::new_simple_literal("hello")),
            GraphName::DefaultGraph,
        ))
        .unwrap();
    let parsed = SparqlEvaluator::new().parse_query(query_str).unwrap();
    let results = parsed.on_store(&isolated).execute().unwrap();
    let expected_hash = hash_query_results(results).unwrap();

    // 4. Record a receipt in the store
    let rcpt_node = NamedOrBlankNode::NamedNode(NamedNode::new("urn:receipt:1").unwrap());
    store
        .insert(&Quad::new(
            rcpt_node.clone(),
            NamedNode::new("http://www.w3.org/1999/02/22-rdf-syntax-ns#type").unwrap(),
            Term::NamedNode(NamedNode::new("urn:lsp-max:core:Receipt").unwrap()),
            GraphName::DefaultGraph,
        ))
        .unwrap();
    store
        .insert(&Quad::new(
            rcpt_node.clone(),
            NamedNode::new("urn:lsp-max:core:resultHash").unwrap(),
            Term::Literal(Literal::new_simple_literal(expected_hash.clone())),
            GraphName::DefaultGraph,
        ))
        .unwrap();
    store
        .insert(&Quad::new(
            rcpt_node.clone(),
            NamedNode::new("urn:lsp-max:core:queryHash").unwrap(),
            Term::Literal(Literal::new_simple_literal(query_hash.clone())),
            GraphName::DefaultGraph,
        ))
        .unwrap();
    store
        .insert(&Quad::new(
            rcpt_node.clone(),
            NamedNode::new("urn:lsp-max:core:graphHash").unwrap(),
            Term::Literal(Literal::new_simple_literal("g1")),
            GraphName::DefaultGraph,
        ))
        .unwrap();

    // 5. Initialize verifier and run
    let mut verifier = QueryConsequenceReplayVerifier::new(1772886586000, 42);
    verifier.register_query(query_hash.clone(), query_str.to_string());

    let summary = verifier.verify_all(&store).unwrap();
    assert_eq!(summary.total_replayed, 1);
    assert_eq!(summary.total_success, 1);
    assert_eq!(summary.total_mismatch, 0);

    // Check that a max:Replay is recorded in the store
    let check_replay_q = "
        PREFIX max: <urn:lsp-max:core:>
        ASK {
            ?r a max:Replay ;
               max:queryHash ?qHash ;
               max:graphHash ?gHash ;
               max:resultHash ?resHash .
        }
    ";
    let parsed_check = SparqlEvaluator::new().parse_query(check_replay_q).unwrap();
    let check_res = parsed_check.on_store(&store).execute().unwrap();
    if let QueryResults::Boolean(val) = check_res {
        assert!(val);
    } else {
        panic!("Expected boolean result");
    }
}

#[test]
fn test_verify_replay_engine() {
    use ed25519_dalek::SigningKey;
    use uuid::Uuid;

    let seed = [0u8; 32];
    let signing_key = SigningKey::from_bytes(&seed);
    let verifying_key = signing_key.verifying_key();
    let genesis_hash = Blake3Hash([0u8; 32]);

    let disc_id = Uuid::nil();
    let law_id = Uuid::nil();

    // 1. Genesis receipt (sequence 0)
    let mut r0 = CryptographicReceipt {
        prev_hash: genesis_hash,
        discipline_id: disc_id,
        law_id,
        consequence_hash: Blake3Hash([0u8; 32]),
        sequence: 0,
        signature: [0u8; 64],
    };
    let payload_hash_0 = r0.compute_payload_hash();
    r0.signature = signing_key.sign(&payload_hash_0.0).to_bytes();

    // 2. Next receipt (sequence 1)
    let mut r1 = CryptographicReceipt {
        prev_hash: payload_hash_0,
        discipline_id: disc_id,
        law_id,
        consequence_hash: Blake3Hash([42u8; 32]),
        sequence: 1,
        signature: [0u8; 64],
    };
    let payload_hash_1 = r1.compute_payload_hash();
    r1.signature = signing_key.sign(&payload_hash_1.0).to_bytes();

    let chain = vec![r0, r1];
    let res = verify_replay(&chain, &verifying_key, &genesis_hash);
    assert!(res.is_ok(), "Replay verification failed: {:?}", res);

    // Test failure on invalid hash
    let mut invalid_chain = chain.clone();
    invalid_chain[1].prev_hash = Blake3Hash([99u8; 32]);
    let res_invalid = verify_replay(&invalid_chain, &verifying_key, &genesis_hash);
    assert!(res_invalid.is_err());
}