solverforge-cli 1.1.3

CLI for scaffolding and managing SolverForge constraint solver projects
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
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
// Integration tests for project scaffolding.
//
// Some tests invoke `cargo check` inside a temp directory and therefore require a full Rust
// toolchain plus dependency resolution access.

use std::process::Command;

#[path = "support/local_dependencies.rs"]
mod local_dependencies;

use local_dependencies::{pin_generated_project_to_local_solverforge, USE_PUBLISHED_DEPS_ENV};

const RUNTIME_DEP_LABEL: &str = "crates.io: solverforge 0.8.5";
const UI_DEP_LABEL: &str = "crates.io: solverforge-ui 0.4.3";
const MAPS_DEP_LABEL: &str = "crates.io: solverforge-maps 2.1.3";
const CLI_VERSION: &str = env!("CARGO_PKG_VERSION");

fn cli_command() -> Command {
    let mut command = Command::new("cargo");
    command.args([
        "run",
        "--quiet",
        "--manifest-path",
        concat!(env!("CARGO_MANIFEST_DIR"), "/Cargo.toml"),
        "--bin",
        "solverforge",
        "--",
    ]);
    command
}

fn legacy_data_loader_stub() -> &'static str {
    "/* Data loading module.\n\n   Replace `load()` with code that reads your real inputs and constructs the\n   domain objects your API or solver layer needs. */\n\npub fn load() -> Result<(), Box<dyn std::error::Error>> {\n    Ok(())\n}\n"
}

fn remove_module_export(path: &std::path::Path, export_line: &str) {
    let current = std::fs::read_to_string(path).expect("failed to read module file");
    let updated = current
        .lines()
        .filter(|line| line.trim_end_matches('\r') != export_line)
        .collect::<Vec<_>>()
        .join("\n");
    let trailing_newline = current.ends_with('\n') || current.ends_with("\r\n");
    let final_content = if trailing_newline && !updated.is_empty() {
        format!("{updated}\n")
    } else {
        updated
    };
    std::fs::write(path, final_content).expect("failed to rewrite module file");
}

#[test]
fn test_version_output_distinguishes_cli_from_runtime_target() {
    let output = cli_command()
        .arg("--version")
        .output()
        .expect("failed to run solverforge --version");

    assert!(output.status.success(), "--version failed");

    let stdout = String::from_utf8_lossy(&output.stdout);
    assert!(
        stdout.contains(&format!("solverforge-cli {}", CLI_VERSION))
            && stdout.contains(&format!("CLI version: {}", CLI_VERSION))
            && stdout.contains("Scaffold runtime target: SolverForge crate target 0.8.5")
            && stdout.contains(RUNTIME_DEP_LABEL)
            && stdout.contains(UI_DEP_LABEL)
            && stdout.contains(MAPS_DEP_LABEL),
        "version output should distinguish the CLI version from the scaffold dependency targets: {}",
        stdout
    );
}

#[test]
fn test_new_creates_neutral_project_files() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_unified_project";

    let status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(status.success(), "solverforge new failed");

    let project_dir = tmp.path().join(project_name);
    assert!(project_dir.exists(), "project directory not created");
    assert!(
        project_dir.join("Cargo.toml").exists(),
        "Cargo.toml missing"
    );
    assert!(project_dir.join("src").exists(), "src/ directory missing");
    assert!(
        project_dir.join(".gitignore").exists(),
        ".gitignore missing"
    );
    assert!(
        project_dir.join("solver.toml").exists(),
        "solver.toml missing"
    );
    assert!(
        project_dir.join("solverforge.app.toml").exists(),
        "solverforge.app.toml missing"
    );

    let app_spec =
        std::fs::read_to_string(project_dir.join("solverforge.app.toml")).expect("read app spec");
    let sf_config =
        std::fs::read_to_string(project_dir.join("static").join("sf-config.json")).unwrap();
    let app_js = std::fs::read_to_string(project_dir.join("static").join("app.js")).unwrap();
    let cargo_toml = std::fs::read_to_string(project_dir.join("Cargo.toml")).unwrap();
    let plan_rs =
        std::fs::read_to_string(project_dir.join("src").join("domain").join("plan.rs")).unwrap();
    let main_rs = std::fs::read_to_string(project_dir.join("src").join("main.rs")).unwrap();
    let ui_model = std::fs::read_to_string(
        project_dir
            .join("static")
            .join("generated")
            .join("ui-model.json"),
    )
    .unwrap();
    let solver_service =
        std::fs::read_to_string(project_dir.join("src").join("solver").join("service.rs")).unwrap();
    let routes_rs =
        std::fs::read_to_string(project_dir.join("src").join("api").join("routes.rs")).unwrap();
    let sse_rs =
        std::fs::read_to_string(project_dir.join("src").join("api").join("sse.rs")).unwrap();

    assert!(
        app_spec.contains("starter = \"neutral-shell\"")
            && app_spec.contains("[demo]")
            && app_spec.contains("default_size = \"standard\"")
            && app_spec.contains("available_sizes = [\"small\", \"standard\", \"large\"]")
            && !app_spec.contains("[[variables]]"),
        "neutral scaffold should ship an empty app spec: {}",
        app_spec
    );
    assert!(
        sf_config.contains("\"title\"") && sf_config.contains("\"subtitle\""),
        "neutral scaffold should keep only the shell config in sf-config.json: {}",
        sf_config
    );
    assert!(
        ui_model.contains("\"views\": []")
            && ui_model.contains("\"constraints\": []")
            && ui_model.contains("\"entities\": []")
            && ui_model.contains("\"facts\": []"),
        "neutral scaffold should start with an empty UI model: {}",
        ui_model
    );
    assert!(
        app_js.contains("SF.createHeader")
            && app_js.contains("SF.createStatusBar")
            && app_js.contains("SF.createSolver")
            && app_js.contains("generated/ui-model.json")
            && app_js.contains("renderStandardView")
            && app_js.contains("renderListView")
            && app_js.contains("No planning variables are declared yet")
            && app_js.contains("onSolution")
            && app_js.contains("onPaused")
            && app_js.contains("onResume")
            && app_js.contains("onCancel")
            && app_js.contains("onComplete"),
        "neutral scaffold should render variable-driven views from solverforge-ui primitives: {}",
        app_js
    );
    assert!(
        cargo_toml.contains(
            "solverforge = { version = \"0.8.5\", features = [\"serde\", \"console\", \"verbose-logging\"] }"
        ) && cargo_toml.contains("solverforge-ui = { version = \"0.4.3\" }")
            && cargo_toml.contains("solverforge-maps = { version = \"2.1.3\" }"),
        "unified scaffold should point at the current SolverForge, solverforge-ui, and solverforge-maps crate targets: {}",
        cargo_toml
    );
    assert!(
        !plan_rs.contains("#[planning_entity_collection]")
            && !plan_rs.contains("#[problem_fact_collection]")
            && plan_rs.contains("pub score: Option<HardSoftScore>")
            && plan_rs.contains("pub fn new() -> Self"),
        "neutral scaffold should start with a score-only plan shell: {plan_rs}"
    );
    assert!(
        main_rs.contains("std::env::var(\"PORT\")") && main_rs.contains("unwrap_or(7860)"),
        "neutral scaffold should honor PORT when binding the generated app: {}",
        main_rs
    );
    assert!(
        solver_service.contains("mpsc::UnboundedReceiver<SolverEvent<Plan>>")
            && solver_service.contains("event_type: &'static str")
            && solver_service.contains("snapshot_revision: Option<u64>")
            && solver_service.contains("\"pause_requested\"")
            && solver_service.contains("\"paused\"")
            && solver_service.contains("\"resumed\"")
            && solver_service.contains("\"completed\"")
            && solver_service.contains("\"cancelled\"")
            && solver_service.contains("\"failed\"")
            && solver_service.contains("pub fn start_job(&self, plan: Plan)")
            && solver_service.contains("\"best_solution\"")
            && solver_service.contains("MANAGER.pause(parse_job_id(id)?)")
            && solver_service.contains("MANAGER.resume(parse_job_id(id)?)"),
        "neutral scaffold should align solver SSE payloads with the retained job lifecycle contract: {}",
        solver_service
    );
    assert!(
        routes_rs.contains("Json<CreateJobResponse>")
            && routes_rs.contains("Json(CreateJobResponse { id })")
            && routes_rs.contains(".route(\"/jobs\", post(create_job))")
            && routes_rs.contains(".route(\"/jobs/{id}/snapshot\", get(get_snapshot))")
            && routes_rs.contains(".route(\"/jobs/{id}/pause\", post(pause_job))")
            && routes_rs.contains(".route(\"/jobs/{id}/resume\", post(resume_job))")
            && routes_rs.contains(".route(\"/jobs/{id}/cancel\", post(cancel_job))"),
        "neutral scaffold should expose the retained /jobs lifecycle routes: {}",
        routes_rs
    );
    assert!(
        sse_rs.contains("\"eventType\":\"progress\"")
            && sse_rs.contains("\"lifecycleState\":\"SOLVING\"")
            && sse_rs.contains("\"snapshotRevision\":null"),
        "neutral scaffold SSE bootstrap should use the retained lifecycle payload shape: {}",
        sse_rs
    );
}

#[test]
fn test_new_readme_records_cli_and_runtime_versions_separately() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_readme_versions";

    let status = cli_command()
        .args(["new", project_name, "--skip-git", "--quiet"])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(status.success(), "solverforge new failed");

    let readme = std::fs::read_to_string(tmp.path().join(project_name).join("README.md"))
        .expect("failed to read scaffold README.md");
    assert!(
        readme.contains(&format!(
            "CLI version used to scaffold this project: `{}`",
            CLI_VERSION
        )) && readme.contains("SolverForge runtime target for this scaffold: `solverforge 0.8.5`")
            && readme.contains(RUNTIME_DEP_LABEL)
            && readme.contains(UI_DEP_LABEL)
            && readme.contains(MAPS_DEP_LABEL)
            && readme.contains("configured crate dependency targets")
            && readme.contains("solverforge.app.toml"),
        "scaffold README should distinguish CLI version from runtime target: {}",
        readme
    );
}

#[test]
fn test_new_removed_template_flags_fail() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");

    let output = cli_command()
        .args(["new", "test_removed_template", "--standard"])
        .current_dir(tmp.path())
        .output()
        .expect("failed to run solverforge new");

    assert!(
        !output.status.success(),
        "solverforge new --standard unexpectedly succeeded"
    );

    let stderr = String::from_utf8_lossy(&output.stderr);
    assert!(
        stderr.contains("unexpected argument '--standard' found"),
        "unexpected stderr: {stderr}"
    );
}

#[test]
fn test_new_neutral_cargo_check_passes() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_cargo_check_unified";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    let pinned_to_local = pin_generated_project_to_local_solverforge(&project_dir);
    if !pinned_to_local {
        eprintln!(
            "using published SolverForge crate targets for scaffold validation; set {}=0 and keep sibling repos present to validate against local checkouts",
            USE_PUBLISHED_DEPS_ENV
        );
    }
    let check_status = Command::new("cargo")
        .arg("check")
        .current_dir(&project_dir)
        .status()
        .expect("failed to run cargo check");

    assert!(
        check_status.success(),
        "cargo check failed on scaffolded neutral project"
    );
}

#[test]
fn test_generate_variable_updates_app_spec_and_ui_model() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_generated_variable_ui_model";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    let fact_status = cli_command()
        .args(["generate", "fact", "resource"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate fact");
    assert!(fact_status.success(), "fact generation failed");

    let entity_status = cli_command()
        .args(["generate", "entity", "task"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate entity");
    assert!(entity_status.success(), "entity generation failed");

    let variable_status = cli_command()
        .args([
            "generate",
            "variable",
            "resource_idx",
            "--entity",
            "Task",
            "--kind",
            "standard",
            "--range",
            "resources",
            "--allows-unassigned",
        ])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate variable");
    assert!(variable_status.success(), "variable generation failed");

    let spec = std::fs::read_to_string(project_dir.join("solverforge.app.toml")).unwrap();
    let ui_model = std::fs::read_to_string(
        project_dir
            .join("static")
            .join("generated")
            .join("ui-model.json"),
    )
    .unwrap();

    assert!(spec.contains("field = \"resource_idx\"") && spec.contains("kind = \"standard\""));
    assert!(
        ui_model.contains("\"kind\": \"standard\"")
            && ui_model.contains("\"entityPlural\": \"tasks\"")
            && ui_model.contains("\"sourcePlural\": \"resources\"")
    );
}

#[test]
fn test_generate_constraint_workflow_cargo_check_passes() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_generated_constraint_workflow";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    pin_generated_project_to_local_solverforge(&project_dir);

    let fact_status = cli_command()
        .args(["generate", "fact", "resource"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to run solverforge generate fact");
    assert!(fact_status.success(), "fact generation failed");

    let entity_status = cli_command()
        .args(["generate", "entity", "task"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to run solverforge generate entity");
    assert!(entity_status.success(), "entity generation failed");

    let variable_status = cli_command()
        .args([
            "generate",
            "variable",
            "resource_idx",
            "--entity",
            "Task",
            "--kind",
            "standard",
            "--range",
            "resources",
            "--allows-unassigned",
        ])
        .current_dir(&project_dir)
        .status()
        .expect("failed to run solverforge generate variable");
    assert!(variable_status.success(), "variable generation failed");

    let generate_status = cli_command()
        .args(["generate", "constraint", "coverage_gap", "--join", "--hard"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to run solverforge generate constraint");

    assert!(generate_status.success(), "constraint generation failed");

    let check_status = Command::new("cargo")
        .arg("check")
        .current_dir(&project_dir)
        .status()
        .expect("failed to run cargo check");

    assert!(
        check_status.success(),
        "cargo check failed after generate constraint workflow"
    );
}

#[test]
fn test_generate_data_creates_compiler_owned_seed_and_preserves_wrapper() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_generate_data";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    pin_generated_project_to_local_solverforge(&project_dir);

    let fact_status = cli_command()
        .args([
            "generate",
            "fact",
            "resource",
            "--field",
            "category:String",
            "--field",
            "load:i32",
        ])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate fact");
    assert!(fact_status.success(), "fact generation failed");

    let entity_status = cli_command()
        .args([
            "generate",
            "entity",
            "task",
            "--field",
            "label:String",
            "--field",
            "priority:i32",
        ])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate entity");
    assert!(entity_status.success(), "entity generation failed");

    let variable_status = cli_command()
        .args([
            "generate",
            "variable",
            "resource_idx",
            "--entity",
            "Task",
            "--kind",
            "standard",
            "--range",
            "resources",
            "--allows-unassigned",
        ])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate variable");
    assert!(variable_status.success(), "variable generation failed");

    let data_status = cli_command()
        .args(["generate", "data", "--size", "large"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate data");
    assert!(data_status.success(), "data generation failed");

    let data_wrapper =
        std::fs::read_to_string(project_dir.join("src").join("data").join("mod.rs")).unwrap();
    let generated_mod =
        std::fs::read_to_string(project_dir.join("src").join("generated").join("mod.rs")).unwrap();
    let generated_seed = std::fs::read_to_string(
        project_dir
            .join("src")
            .join("generated")
            .join("data_seed.rs"),
    )
    .unwrap();
    let spec = std::fs::read_to_string(project_dir.join("solverforge.app.toml")).unwrap();

    assert!(
        data_wrapper.contains("pub use crate::generated::data_seed::DemoData;")
            && data_wrapper.contains("crate::generated::data_seed::generate(demo)"),
        "data wrapper should remain a stable shim over the compiler-owned generated seed: {}",
        data_wrapper
    );
    assert_eq!(
        generated_mod, "pub mod data_seed;\n",
        "generated module should expose the compiler-owned data seed"
    );
    assert!(
        generated_seed.contains("pub enum DemoData")
            && generated_seed.contains("DemoData::Small => generate_plan(")
            && generated_seed.contains("DemoData::Standard => generate_plan(")
            && generated_seed.contains("DemoData::Large => generate_plan(")
            && generated_seed.contains("let resources =")
            && generated_seed.contains("let tasks =")
            && generated_seed.contains("category: format!(\"resource-category-{idx}\")")
            && generated_seed.contains("load: ((idx % 7) as i32) - 2")
            && generated_seed.contains("label: format!(\"task-label-{idx}\")")
            && generated_seed.contains("priority: ((idx % 7) as i32) - 2")
            && generated_seed.contains("Plan::new(resources, tasks)"),
        "generated data seed should be rebuilt from the current project model: {}",
        generated_seed
    );
    assert!(
        spec.contains("default_size = \"large\"")
            && spec.contains("[demo]")
            && spec.contains("\"small\"")
            && spec.contains("\"standard\"")
            && spec.contains("\"large\""),
        "generate data --size should persist the project default in solverforge.app.toml: {}",
        spec
    );

    let check_status = Command::new("cargo")
        .arg("check")
        .current_dir(&project_dir)
        .status()
        .expect("failed to run cargo check");

    assert!(
        check_status.success(),
        "cargo check failed after generate data workflow"
    );
}

#[test]
fn test_generate_data_migrates_legacy_owned_loader_and_backfills_lib_export() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_generate_data_legacy_migration";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    pin_generated_project_to_local_solverforge(&project_dir);

    std::fs::write(
        project_dir.join("src").join("data").join("mod.rs"),
        legacy_data_loader_stub(),
    )
    .unwrap();

    let lib_path = project_dir.join("src").join("lib.rs");
    remove_module_export(&lib_path, "pub mod generated;");

    let fact_status = cli_command()
        .args(["generate", "fact", "resource"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate fact");
    assert!(fact_status.success(), "fact generation failed");

    let data_wrapper =
        std::fs::read_to_string(project_dir.join("src").join("data").join("mod.rs")).unwrap();
    let lib_rs = std::fs::read_to_string(&lib_path).unwrap();

    assert!(
        data_wrapper.contains("@generated by solverforge-cli: data-wrapper v1")
            && data_wrapper.contains("crate::generated::data_seed::generate(demo)"),
        "legacy owned data loader should be migrated to the generated wrapper: {}",
        data_wrapper
    );
    assert!(
        lib_rs.contains("pub mod generated;"),
        "legacy app migration should backfill pub mod generated; into src/lib.rs: {}",
        lib_rs
    );

    let check_status = Command::new("cargo")
        .arg("check")
        .current_dir(&project_dir)
        .status()
        .expect("failed to run cargo check");

    assert!(
        check_status.success(),
        "cargo check failed after migrating legacy data loader"
    );
}

#[test]
fn test_generate_data_preserves_customized_legacy_loader() {
    let tmp = tempfile::tempdir().expect("failed to create temp dir");
    let project_name = "test_generate_data_preserve_custom_legacy_loader";

    let scaffold_status = cli_command()
        .args([
            "new",
            project_name,
            "--skip-git",
            "--skip-readme",
            "--quiet",
        ])
        .current_dir(tmp.path())
        .status()
        .expect("failed to run solverforge new");

    assert!(scaffold_status.success(), "scaffolding failed");

    let project_dir = tmp.path().join(project_name);
    pin_generated_project_to_local_solverforge(&project_dir);

    let custom_loader = "/* Data loading module.\n\n   Replace `load()` with code that reads your real inputs and constructs the\n   domain objects your API or solver layer needs. */\n\nuse std::str::FromStr;\n\nuse crate::domain::{Plan, Resource};\n\n#[derive(Debug, Clone, Copy)]\npub enum DemoData {\n    Standard,\n}\n\nimpl FromStr for DemoData {\n    type Err = ();\n\n    fn from_str(s: &str) -> Result<Self, Self::Err> {\n        match s.to_uppercase().as_str() {\n            \"STANDARD\" => Ok(DemoData::Standard),\n            _ => Err(()),\n        }\n    }\n}\n\npub fn generate(_demo: DemoData) -> Plan {\n    let resources = vec![Resource::new(\"resource-0\", \"custom-resource\")];\n    Plan::new(resources)\n}\n\npub fn custom_source() -> &'static str { \"csv\" }\n"
        .to_string();
    std::fs::write(
        project_dir.join("src").join("data").join("mod.rs"),
        &custom_loader,
    )
    .unwrap();

    let lib_path = project_dir.join("src").join("lib.rs");
    remove_module_export(&lib_path, "pub mod generated;");

    let fact_status = cli_command()
        .args(["generate", "fact", "resource"])
        .current_dir(&project_dir)
        .status()
        .expect("failed to generate fact");
    assert!(fact_status.success(), "fact generation failed");

    let data_mod =
        std::fs::read_to_string(project_dir.join("src").join("data").join("mod.rs")).unwrap();
    let lib_rs = std::fs::read_to_string(&lib_path).unwrap();

    assert_eq!(
        data_mod, custom_loader,
        "customized legacy data loader should not be overwritten"
    );
    assert!(
        !lib_rs.contains("pub mod generated;"),
        "customized legacy app should not be rewritten to depend on generated data wiring"
    );

    let check_status = Command::new("cargo")
        .arg("check")
        .current_dir(&project_dir)
        .status()
        .expect("failed to run cargo check");

    assert!(
        check_status.success(),
        "cargo check failed after preserving customized legacy data loader"
    );
}