corim 0.1.2

Concise Reference Integrity Manifest (CoRIM) — CBOR-based encoding of Endorsements and Reference Values for Remote Attestation (RATS).
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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.

//! Tests for the public builder APIs (`ComidBuilder`, `CotlBuilder`,
//! `CorimBuilder`) covering the fluent setter methods and the failure
//! modes of `add_coswid` / `build`.

use corim::builder::{ComidBuilder, CorimBuilder, CotlBuilder};
use corim::types::common::*;
use corim::types::corim::*;
use corim::types::coswid::*;
use corim::types::environment::*;
use corim::types::measurement::*;
use corim::types::triples::*;

fn one_reference_triple() -> ReferenceTriple {
    ReferenceTriple::new(
        EnvironmentMap::for_class("V", "M"),
        vec![MeasurementMap {
            mkey: None,
            mval: MeasurementValuesMap {
                svn: Some(SvnChoice::ExactValue(1)),
                ..Default::default()
            },
            authorized_by: None,
        }],
    )
}

#[test]
fn cotl_builder_set_tag_version() {
    let cotl = CotlBuilder::new(TagIdChoice::Text("v".into()), i64::MAX)
        .set_tag_version(3)
        .add_tag_id(TagIdChoice::Text("x".into()))
        .build()
        .unwrap();
    assert_eq!(cotl.tag_identity.tag_version, Some(3));
}

#[test]
fn corim_builder_add_entity() {
    let entity = EntityMap {
        entity_name: "ACME".into(),
        reg_id: Some("https://acme.example".into()),
        role: vec![1],
    };
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(one_reference_triple())
        .build()
        .unwrap();
    let corim = CorimBuilder::new(CorimId::Text("c".into()))
        .add_entity(entity)
        .add_comid_tag(comid)
        .unwrap()
        .build()
        .unwrap();
    assert!(corim.entities.is_some());
    assert_eq!(corim.entities.unwrap().len(), 1);
}

#[test]
fn corim_builder_add_dependent_rim() {
    let locator = CorimLocator {
        href: CorimLocatorHref::Single("https://example.com/dep.corim".into()),
        thumbprint: None,
    };
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(one_reference_triple())
        .build()
        .unwrap();
    let corim = CorimBuilder::new(CorimId::Text("c".into()))
        .add_dependent_rim(locator)
        .add_comid_tag(comid)
        .unwrap()
        .build()
        .unwrap();
    assert!(corim.dependent_rims.is_some());
}

#[test]
fn corim_builder_add_tag_directly() {
    let corim = CorimBuilder::new(CorimId::Text("c".into()))
        .add_tag(ConciseTagChoice::Comid(vec![0xA0]))
        .build()
        .unwrap();
    assert_eq!(corim.tags.len(), 1);
}

#[test]
fn corim_builder_set_profile() {
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(one_reference_triple())
        .build()
        .unwrap();
    let corim = CorimBuilder::new(CorimId::Text("c".into()))
        .set_profile(ProfileChoice::Uri("https://example.com/profile".into()))
        .add_comid_tag(comid)
        .unwrap()
        .build()
        .unwrap();
    assert!(corim.profile.is_some());
}

#[test]
fn comid_builder_conditional_endorsement_accepts_empty_endorsements() {
    // The builder doesn't validate inner structure — it just collects triples.
    // Inner-validity (e.g. non-empty endorsements) is enforced by `Validate`,
    // not by `build()`.
    let result = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_conditional_endorsement(ConditionalEndorsementTriple(
            vec![StatefulEnvironmentRecord(
                EnvironmentMap::for_class("V", "M"),
                vec![MeasurementMap {
                    mkey: None,
                    mval: MeasurementValuesMap {
                        svn: Some(SvnChoice::ExactValue(1)),
                        ..Default::default()
                    },
                    authorized_by: None,
                }],
            )],
            vec![],
        ))
        .build();
    assert!(result.is_ok());
}

#[test]
fn comid_builder_conditional_endorsement_series() {
    let env = EnvironmentMap::for_class("V", "M");
    let meas = vec![MeasurementMap {
        mkey: Some(MeasuredElement::Uint(1)),
        mval: MeasurementValuesMap {
            svn: Some(SvnChoice::ExactValue(1)),
            ..Default::default()
        },
        authorized_by: None,
    }];
    let ces = ConditionalEndorsementSeriesTriple::new(
        CesCondition {
            environment: env,
            claims_list: vec![],
            authorized_by: None,
        },
        vec![ConditionalSeriesRecord::new(meas.clone(), meas)],
    );
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_conditional_endorsement_series(ces)
        .build()
        .unwrap();
    assert!(comid.triples.conditional_endorsement_series.is_some());
}

#[test]
fn comid_builder_set_language_and_entities() {
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .set_language("en-US")
        .set_tag_version(2)
        .add_entity(EntityMap {
            entity_name: "Test".into(),
            reg_id: None,
            role: vec![0],
        })
        .add_linked_tag(LinkedTagMap {
            linked_tag_id: TagIdChoice::Text("other".into()),
            tag_rel: 0,
        })
        .add_reference_triple(one_reference_triple())
        .build()
        .unwrap();
    assert_eq!(comid.language.as_deref(), Some("en-US"));
    assert_eq!(comid.tag_identity.tag_version, Some(2));
    assert!(comid.entities.is_some());
    assert!(comid.linked_tags.is_some());
}

#[test]
fn corim_builder_add_coswid_invalid_fails() {
    // CoSWID with no entities — `add_coswid` validates and rejects.
    let bad_coswid = ConciseSwidTag::new(TagIdChoice::Text("x".into()), "Test", 0, vec![]);
    let result = CorimBuilder::new(CorimId::Text("c".into())).add_coswid(bad_coswid);
    assert!(result.is_err());
}

// ---------------------------------------------------------------------------
// strict_links lint — cross-triple environment anchoring
// ---------------------------------------------------------------------------

fn one_measurement(svn: u64) -> MeasurementMap {
    MeasurementMap {
        mkey: None,
        mval: MeasurementValuesMap {
            svn: Some(SvnChoice::ExactValue(svn)),
            ..Default::default()
        },
        authorized_by: None,
    }
}

fn one_ces(env: EnvironmentMap) -> ConditionalEndorsementSeriesTriple {
    ConditionalEndorsementSeriesTriple::new(
        CesCondition {
            environment: env,
            claims_list: vec![],
            authorized_by: None,
        },
        vec![ConditionalSeriesRecord::new(
            vec![one_measurement(1)],
            vec![one_measurement(2)],
        )],
    )
}

#[test]
fn comid_builder_strict_links_rejects_unanchored_ces_env() {
    use corim::error::BuilderError;

    let env_a = EnvironmentMap::for_class("VendorA", "ModelA");
    let env_b = EnvironmentMap::for_class("VendorB", "ModelB");

    let result = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env_a, vec![one_measurement(1)]))
        .add_conditional_endorsement_series(one_ces(env_b))
        .strict_links(true)
        .build();

    match result {
        Err(BuilderError::UnanchoredConditionEnv { triple_kind, index }) => {
            assert_eq!(triple_kind, "conditional-endorsement-series");
            assert_eq!(index, 0);
        }
        other => panic!("expected UnanchoredConditionEnv, got {other:?}"),
    }
}

#[test]
fn comid_builder_strict_links_accepts_matching_ces_env() {
    let env = EnvironmentMap::for_class("VendorA", "ModelA");

    ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env.clone(), vec![one_measurement(1)]))
        .add_conditional_endorsement_series(one_ces(env))
        .strict_links(true)
        .build()
        .expect("strict_links should accept a CES env that matches a reference triple");
}

#[test]
fn comid_builder_default_accepts_unanchored_ces_env() {
    let env_a = EnvironmentMap::for_class("VendorA", "ModelA");
    let env_b = EnvironmentMap::for_class("VendorB", "ModelB");

    ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env_a, vec![one_measurement(1)]))
        .add_conditional_endorsement_series(one_ces(env_b))
        .build()
        .expect("default builder must not enforce link checking");
}

#[test]
fn comid_builder_strict_links_rejects_unanchored_endorsed_env() {
    use corim::error::BuilderError;

    let env_a = EnvironmentMap::for_class("VendorA", "ModelA");
    let env_b = EnvironmentMap::for_class("VendorB", "ModelB");

    let result = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env_a, vec![one_measurement(1)]))
        .add_endorsed_triple(EndorsedTriple::new(env_b, vec![one_measurement(2)]))
        .strict_links(true)
        .build();

    match result {
        Err(BuilderError::UnanchoredConditionEnv { triple_kind, index }) => {
            assert_eq!(triple_kind, "endorsed");
            assert_eq!(index, 0);
        }
        other => panic!("expected UnanchoredConditionEnv(endorsed), got {other:?}"),
    }
}

#[test]
fn comid_builder_strict_links_rejects_unanchored_conditional_endorsement_env() {
    use corim::error::BuilderError;

    let env_a = EnvironmentMap::for_class("VendorA", "ModelA");
    let env_b = EnvironmentMap::for_class("VendorB", "ModelB");

    // Two stateful records: the first is anchored, the second is not.
    let cet = ConditionalEndorsementTriple(
        vec![
            StatefulEnvironmentRecord(env_a.clone(), vec![one_measurement(1)]),
            StatefulEnvironmentRecord(env_b, vec![one_measurement(2)]),
        ],
        vec![EndorsedTriple::new(env_a.clone(), vec![one_measurement(3)])],
    );

    let result = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env_a, vec![one_measurement(1)]))
        .add_conditional_endorsement(cet)
        .strict_links(true)
        .build();

    match result {
        Err(BuilderError::UnanchoredConditionEnv { triple_kind, index }) => {
            assert_eq!(triple_kind, "conditional-endorsement");
            assert_eq!(index, 0);
        }
        other => panic!("expected UnanchoredConditionEnv(conditional-endorsement), got {other:?}"),
    }
}

#[test]
fn comid_builder_strict_links_accepts_anchored_endorsed_and_cet() {
    let env = EnvironmentMap::for_class("VendorA", "ModelA");

    let cet = ConditionalEndorsementTriple(
        vec![StatefulEnvironmentRecord(
            env.clone(),
            vec![one_measurement(1)],
        )],
        vec![EndorsedTriple::new(env.clone(), vec![one_measurement(3)])],
    );

    ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple(ReferenceTriple::new(env.clone(), vec![one_measurement(1)]))
        .add_endorsed_triple(EndorsedTriple::new(env, vec![one_measurement(2)]))
        .add_conditional_endorsement(cet)
        .strict_links(true)
        .build()
        .expect("strict_links should accept anchored endorsed + CET envs");
}

// ---------------------------------------------------------------------------
// env catalog — declare_env + add_*_for resolution (CURRENTLY FAILING)
// ---------------------------------------------------------------------------

#[test]
fn comid_builder_declare_env_resolves_at_build() {
    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_cpu = EnvironmentMap::for_class("CPU-CO", "CPU-MD");
    let cpu = b.declare_env("cpu", env_cpu.clone()).expect("declare ok");

    let comid = b
        .add_reference_triple_for(&cpu, vec![one_measurement(7)])
        .build()
        .expect("build should resolve the EnvRef to the inline env");

    let refs = comid
        .triples
        .reference_triples
        .expect("reference_triples should be populated by add_reference_triple_for");
    assert_eq!(refs.len(), 1);
    assert_eq!(&refs[0].0, &env_cpu);
}

#[test]
fn comid_builder_declare_env_rejects_duplicate_label() {
    use corim::error::BuilderError;

    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_a = EnvironmentMap::for_class("V", "A");
    let env_b = EnvironmentMap::for_class("V", "B");
    b.declare_env("cpu", env_a).expect("first declare ok");
    let err = b
        .declare_env("cpu", env_b)
        .expect_err("second declare with same label must error");
    match err {
        BuilderError::DuplicateEnvLabel { label } => assert_eq!(label, "cpu"),
        other => panic!("expected DuplicateEnvLabel, got {other:?}"),
    }
}

#[test]
fn comid_builder_cross_builder_ref_rejected_at_build() {
    use corim::error::BuilderError;

    let env_cpu = EnvironmentMap::for_class("CPU-CO", "CPU-MD");
    let mut b1 = ComidBuilder::new(TagIdChoice::Text("t1".into()));
    let cpu_from_b1 = b1.declare_env("cpu", env_cpu.clone()).expect("declare ok");

    let b2 = ComidBuilder::new(TagIdChoice::Text("t2".into()))
        .add_reference_triple_for(cpu_from_b1, vec![one_measurement(1)]);

    let err = b2.build().expect_err("cross-builder ref must error");
    match err {
        BuilderError::RefFromOtherBuilder { label } => assert_eq!(label, "cpu"),
        other => panic!("expected RefFromOtherBuilder, got {other:?}"),
    }
}

#[test]
fn comid_builder_strict_links_with_catalog_anchored_passes() {
    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_cpu = EnvironmentMap::for_class("CPU-CO", "CPU-MD");
    let cpu = b.declare_env("cpu", env_cpu).expect("declare ok");

    b.add_reference_triple_for(&cpu, vec![one_measurement(1)])
        .add_endorsed_triple_for(&cpu, vec![one_measurement(2)])
        .strict_links(true)
        .build()
        .expect("strict_links should accept a ref anchored by a reference triple");
}

#[test]
fn comid_builder_strict_links_with_catalog_unanchored_fails() {
    use corim::error::BuilderError;

    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_a = EnvironmentMap::for_class("VendorA", "ModelA");
    let env_b = EnvironmentMap::for_class("VendorB", "ModelB");
    let a = b.declare_env("a", env_a).expect("declare ok");
    let bref = b.declare_env("b", env_b).expect("declare ok");

    // Only `a` is in a reference triple; endorsed_for(b) must still fail
    // strict_links because the lint promise is structural anchoring,
    // not catalog presence.
    let err = b
        .add_reference_triple_for(&a, vec![one_measurement(1)])
        .add_endorsed_triple_for(&bref, vec![one_measurement(2)])
        .strict_links(true)
        .build()
        .expect_err("strict_links should fail for an unanchored ref");
    match err {
        BuilderError::UnanchoredConditionEnv { triple_kind, index } => {
            assert_eq!(triple_kind, "endorsed");
            assert_eq!(index, 0);
        }
        other => panic!("expected UnanchoredConditionEnv, got {other:?}"),
    }
}

#[test]
fn comid_builder_dependency_triple_for_resolves_mixed_env_specs() {
    use corim::builder::EnvSpec;

    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_a = EnvironmentMap::for_class("V", "A");
    let env_b = EnvironmentMap::for_class("V", "B");
    let env_c = EnvironmentMap::for_class("V", "C");
    let a = b.declare_env("a", env_a.clone()).expect("declare ok");
    let c = b.declare_env("c", env_c.clone()).expect("declare ok");

    // Mix one inline env with two refs in the trustees list.
    let comid = b
        .add_reference_triple_for(&a, vec![one_measurement(1)])
        .add_dependency_triple_for(&a, vec![EnvSpec::from(env_b.clone()), EnvSpec::from(&c)])
        .build()
        .expect("build ok");

    let deps = comid
        .triples
        .dependency_triples
        .expect("dependency present");
    assert_eq!(deps.len(), 1);
    assert_eq!(&deps[0].0, &env_a);
    assert_eq!(deps[0].1, vec![env_b, env_c]);
}

#[test]
fn comid_builder_conditional_endorsement_series_for_resolves_ref() {
    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env = EnvironmentMap::for_class("V", "M");
    let env_ref = b.declare_env("platform", env.clone()).expect("declare ok");

    let series = vec![ConditionalSeriesRecord::new(
        vec![one_measurement(1)],
        vec![one_measurement(2)],
    )];

    // Same ref drives both the reference and the CES condition env — this is
    // the by-construction equivalence that the catalog API exists to provide.
    let comid = b
        .add_reference_triple_for(&env_ref, vec![one_measurement(1)])
        .add_conditional_endorsement_series_for(&env_ref, vec![], None, series)
        .strict_links(true)
        .build()
        .expect("build ok");

    let refs = comid.triples.reference_triples.expect("ref present");
    let cess = comid
        .triples
        .conditional_endorsement_series
        .expect("ces present");
    assert_eq!(refs.len(), 1);
    assert_eq!(cess.len(), 1);
    assert_eq!(&refs[0].0, &env);
    assert_eq!(&cess[0].0.environment, &env);
    // Wire-format equivalence: the two envs are structurally identical.
    assert_eq!(&refs[0].0, &cess[0].0.environment);
}

#[test]
fn comid_builder_conditional_endorsement_series_for_inline_env_also_works() {
    let env = EnvironmentMap::for_class("V", "M");
    let comid = ComidBuilder::new(TagIdChoice::Text("t".into()))
        .add_reference_triple_for(env.clone(), vec![one_measurement(1)])
        .add_conditional_endorsement_series_for(
            env,
            vec![one_measurement(7)],
            None,
            vec![ConditionalSeriesRecord::new(
                vec![one_measurement(1)],
                vec![one_measurement(2)],
            )],
        )
        .build()
        .expect("build ok");
    let cess = comid
        .triples
        .conditional_endorsement_series
        .expect("ces present");
    assert_eq!(cess.len(), 1);
    assert_eq!(cess[0].0.claims_list.len(), 1);
}

#[test]
fn comid_builder_conditional_endorsement_for_resolves_refs() {
    use corim::builder::EnvSpec;

    let mut b = ComidBuilder::new(TagIdChoice::Text("t".into()));
    let env_a = EnvironmentMap::for_class("V", "A");
    let env_b = EnvironmentMap::for_class("V", "B");
    let a = b.declare_env("a", env_a.clone()).expect("declare ok");
    // Two stateful-environment-records, one by ref, one inline.
    let comid = b
        .add_reference_triple_for(&a, vec![one_measurement(1)])
        .add_reference_triple_for(env_b.clone(), vec![one_measurement(2)])
        .add_conditional_endorsement_for(
            vec![
                (EnvSpec::from(&a), vec![one_measurement(1)]),
                (EnvSpec::from(env_b.clone()), vec![one_measurement(2)]),
            ],
            vec![EndorsedTriple::new(env_a.clone(), vec![one_measurement(9)])],
        )
        .strict_links(true)
        .build()
        .expect("build ok");

    let ces = comid.triples.conditional_endorsement.expect("ce present");
    assert_eq!(ces.len(), 1);
    assert_eq!(ces[0].0.len(), 2);
    assert_eq!(&ces[0].0[0].0, &env_a);
    assert_eq!(&ces[0].0[1].0, &env_b);
    // Endorsement env preserved as-passed.
    assert_eq!(&ces[0].1[0].0, &env_a);
}

#[test]
fn comid_builder_conditional_endorsement_series_for_rejects_foreign_ref() {
    use corim::error::BuilderError;

    let mut b1 = ComidBuilder::new(TagIdChoice::Text("t1".into()));
    let env = EnvironmentMap::for_class("V", "M");
    let foreign_ref = b1.declare_env("e", env.clone()).expect("declare ok");

    let mut b2 = ComidBuilder::new(TagIdChoice::Text("t2".into()));
    let local = b2.declare_env("e", env.clone()).expect("declare ok");
    let err = b2
        .add_reference_triple_for(&local, vec![one_measurement(1)])
        .add_conditional_endorsement_series_for(
            &foreign_ref,
            vec![],
            None,
            vec![ConditionalSeriesRecord::new(
                vec![one_measurement(1)],
                vec![one_measurement(2)],
            )],
        )
        .build()
        .expect_err("foreign ref must be rejected");
    match err {
        BuilderError::RefFromOtherBuilder { label } => assert_eq!(label, "e"),
        other => panic!("expected RefFromOtherBuilder, got {other:?}"),
    }
}

#[test]
fn comid_builder_conditional_endorsement_for_rejects_foreign_ref() {
    use corim::builder::EnvSpec;
    use corim::error::BuilderError;

    let mut b1 = ComidBuilder::new(TagIdChoice::Text("t1".into()));
    let env = EnvironmentMap::for_class("V", "M");
    let foreign_ref = b1.declare_env("e", env.clone()).expect("declare ok");

    let mut b2 = ComidBuilder::new(TagIdChoice::Text("t2".into()));
    let local = b2.declare_env("e", env.clone()).expect("declare ok");
    let err = b2
        .add_reference_triple_for(&local, vec![one_measurement(1)])
        .add_conditional_endorsement_for(
            vec![(EnvSpec::from(&foreign_ref), vec![one_measurement(1)])],
            vec![EndorsedTriple::new(env, vec![one_measurement(9)])],
        )
        .build()
        .expect_err("foreign ref must be rejected");
    match err {
        BuilderError::RefFromOtherBuilder { label } => assert_eq!(label, "e"),
        other => panic!("expected RefFromOtherBuilder, got {other:?}"),
    }
}