| 1 | package agent |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "strings" |
| 8 | "sync" |
| 9 | "testing" |
| 10 | |
| 11 | "reasonix/internal/fileutil" |
| 12 | "reasonix/internal/provider" |
| 13 | "reasonix/internal/store" |
| 14 | ) |
| 15 | |
| 16 | func dagSavedSession(t *testing.T, path string, contents ...string) *Session { |
| 17 | t.Helper() |
| 18 | s := NewSession("sys") |
| 19 | for i, c := range contents { |
| 20 | role := provider.RoleUser |
| 21 | if i%2 == 1 { |
| 22 | role = provider.RoleAssistant |
| 23 | } |
| 24 | s.Add(provider.Message{Role: role, Content: c}) |
| 25 | } |
| 26 | if err := s.Save(path); err != nil { |
| 27 | t.Fatalf("save: %v", err) |
| 28 | } |
| 29 | return s |
| 30 | } |
| 31 | |
| 32 | func dagEntryTypes(t *testing.T, path string) []string { |
| 33 | t.Helper() |
| 34 | b, err := os.ReadFile(store.SessionEventLog(path)) |
| 35 | if err != nil { |
| 36 | t.Fatal(err) |
| 37 | } |
| 38 | var types []string |
| 39 | for line := range strings.SplitSeq(strings.TrimSpace(string(b)), "\n") { |
| 40 | _, rest, _ := strings.Cut(line, `"type":"`) |
| 41 | typ, _, _ := strings.Cut(rest, `"`) |
| 42 | types = append(types, typ) |
| 43 | } |
| 44 | return types |
| 45 | } |
| 46 | |
| 47 | func assertNoTranscriptCopies(t *testing.T, path string) { |
| 48 | t.Helper() |
| 49 | entries, _ := os.ReadDir(filepath.Dir(path)) |
| 50 | for _, entry := range entries { |
| 51 | if store.IsSessionTranscriptName(entry.Name()) && entry.Name() != filepath.Base(path) { |
| 52 | t.Fatalf("unexpected transcript copy %s", entry.Name()) |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | func TestDAGSaveCreatesSchemaTwoLogAndAppendsDelta(t *testing.T) { |
| 58 | path := dagTestSession(t) |
| 59 | s := dagSavedSession(t, path, "q1", "a1") |
| 60 | probe, err := probeSessionEventLog(path) |
| 61 | if err != nil || !probe.dag { |
| 62 | t.Fatalf("probe = %+v err=%v", probe, err) |
| 63 | } |
| 64 | if got := dagEntryTypes(t, path); strings.Join(got, ",") != "log,writer,message,message,message" { |
| 65 | t.Fatalf("entries = %v", got) |
| 66 | } |
| 67 | ref, ok := s.Head() |
| 68 | if !ok || ref.HeadID != SessionMainHead || ref.LeafID != s.LeafID() || ref.LogGeneration != 1 { |
| 69 | t.Fatalf("head = %+v ok=%v", ref, ok) |
| 70 | } |
| 71 | if b, err := os.ReadFile(path); err != nil || strings.Count(string(b), "\n") != 3 { |
| 72 | t.Fatalf("checkpoint cache: %v %q", err, b) |
| 73 | } |
| 74 | idx, err := ReadSessionHeadIndex(path) |
| 75 | if err != nil || idx == nil || !idx.Current(path) || idx.MessageCount != 3 || idx.SelectedHead != SessionMainHead { |
| 76 | t.Fatalf("index = %+v err=%v", idx, err) |
| 77 | } |
| 78 | meta, _, err := LoadBranchMeta(path) |
| 79 | if err != nil || meta.HeadID != SessionMainHead || meta.LogSchema != 2 || meta.HeadCount != 1 || meta.Revision == 0 { |
| 80 | t.Fatalf("meta = %+v err=%v", meta, err) |
| 81 | } |
| 82 | s.Add(provider.Message{Role: provider.RoleUser, Content: "q2"}) |
| 83 | if err := s.Save(path); err != nil { |
| 84 | t.Fatal(err) |
| 85 | } |
| 86 | if got := dagEntryTypes(t, path); strings.Join(got, ",") != "log,writer,message,message,message,message" { |
| 87 | t.Fatalf("entries after append = %v", got) |
| 88 | } |
| 89 | if err := s.Save(path); err != nil { |
| 90 | t.Fatal(err) |
| 91 | } |
| 92 | if got := len(dagEntryTypes(t, path)); got != 6 { |
| 93 | t.Fatalf("no-op save appended: %d entries", got) |
| 94 | } |
| 95 | loaded, err := LoadSession(path) |
| 96 | if err != nil || len(loaded.Messages) != 4 || loaded.LeafID() != s.LeafID() { |
| 97 | t.Fatalf("reload: err=%v len=%d", err, len(loaded.Messages)) |
| 98 | } |
| 99 | assertNoTranscriptCopies(t, path) |
| 100 | } |
| 101 | |
| 102 | func TestDAGSaveDisabledByEnvKeepsSchemaOne(t *testing.T) { |
| 103 | useSchemaOneLog(t) |
| 104 | path := dagTestSession(t) |
| 105 | dagSavedSession(t, path, "q1") |
| 106 | probe, err := probeSessionEventLog(path) |
| 107 | if err != nil || probe.dag || !probe.native { |
| 108 | t.Fatalf("probe = %+v err=%v", probe, err) |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | func TestLoadedLegacyCheckpointStaysOnLegacyWriter(t *testing.T) { |
| 113 | path := filepath.Join(t.TempDir(), "legacy.jsonl") |
| 114 | body := `{"role":"user","content":"old question"}` + "\n" |
| 115 | if err := os.WriteFile(path, []byte(body), 0o600); err != nil { |
| 116 | t.Fatal(err) |
| 117 | } |
| 118 | s, err := LoadSession(path) |
| 119 | if err != nil { |
| 120 | t.Fatal(err) |
| 121 | } |
| 122 | s.Add(provider.Message{Role: provider.RoleAssistant, Content: "continued answer"}) |
| 123 | if err := s.Save(path); err != nil { |
| 124 | t.Fatal(err) |
| 125 | } |
| 126 | probe, err := probeSessionEventLog(path) |
| 127 | if err != nil { |
| 128 | t.Fatal(err) |
| 129 | } |
| 130 | if probe.dag || probe.size != 0 { |
| 131 | t.Fatalf("legacy save changed format: %+v", probe) |
| 132 | } |
| 133 | if _, err := os.Stat(store.SessionEventLog(path)); !os.IsNotExist(err) { |
| 134 | t.Fatalf("checkpoint-only continuation created a duplicate log: %v", err) |
| 135 | } |
| 136 | loaded, err := LoadSession(path) |
| 137 | if err != nil || len(loaded.Messages) != 2 || loaded.Messages[1].Content != "continued answer" { |
| 138 | t.Fatalf("continued legacy session = %+v, err=%v", loaded, err) |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | func TestDAGSaveLocalMetadataBecomesPatch(t *testing.T) { |
| 143 | path := dagTestSession(t) |
| 144 | s := dagSavedSession(t, path, "q1", "a1") |
| 145 | msgs := s.Snapshot() |
| 146 | msgs[1].Edited = true |
| 147 | msgs[1].WorkDurationMs = 42 |
| 148 | s.ReplaceLocalMetadata(msgs) |
| 149 | if err := s.SaveRewrite(path); err != nil { |
| 150 | t.Fatal(err) |
| 151 | } |
| 152 | types := dagEntryTypes(t, path) |
| 153 | if types[len(types)-1] != sessionDAGTypePatch { |
| 154 | t.Fatalf("entries = %v", types) |
| 155 | } |
| 156 | loaded, err := LoadSession(path) |
| 157 | if err != nil || !loaded.Messages[1].Edited || loaded.Messages[1].WorkDurationMs != 42 || loaded.Messages[1].ID != msgs[1].ID { |
| 158 | t.Fatalf("reload = %+v err=%v", loaded.Messages[1], err) |
| 159 | } |
| 160 | if reasons := s.DrainContentRewriteReasons(); len(reasons) != 0 { |
| 161 | t.Fatalf("local metadata save queued cache reasons %v", reasons) |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | func TestDAGSaveSystemPromptRefreshKeepsLaterIDs(t *testing.T) { |
| 166 | path := dagTestSession(t) |
| 167 | s := dagSavedSession(t, path, "q1", "a1") |
| 168 | before := s.Snapshot() |
| 169 | s.SetLeadingSystemPrompt("sys-v2") |
| 170 | if err := s.SaveRewrite(path); err != nil { |
| 171 | t.Fatal(err) |
| 172 | } |
| 173 | types := dagEntryTypes(t, path) |
| 174 | if types[len(types)-1] != sessionDAGTypeSystem { |
| 175 | t.Fatalf("entries = %v", types) |
| 176 | } |
| 177 | loaded, err := LoadSession(path) |
| 178 | if err != nil || loaded.Messages[0].Content != "sys-v2" { |
| 179 | t.Fatalf("reload = %+v err=%v", loaded.Messages, err) |
| 180 | } |
| 181 | for i := range before { |
| 182 | if loaded.Messages[i].ID != before[i].ID { |
| 183 | t.Fatalf("message %d id changed across system refresh", i) |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | func TestDAGSaveTruncationRewindsWithoutErasingBytes(t *testing.T) { |
| 189 | path := dagTestSession(t) |
| 190 | s := dagSavedSession(t, path, "q1", "a1", "q2", "a2") |
| 191 | logBefore, _ := os.ReadFile(store.SessionEventLog(path)) |
| 192 | msgs := s.Snapshot() |
| 193 | s.Rewrite(msgs[:3], "rewind_truncate") |
| 194 | if err := s.SaveRewrite(path); err != nil { |
| 195 | t.Fatal(err) |
| 196 | } |
| 197 | logAfter, _ := os.ReadFile(store.SessionEventLog(path)) |
| 198 | if !strings.HasPrefix(string(logAfter), string(logBefore)) { |
| 199 | t.Fatal("rewind must not rewrite earlier bytes") |
| 200 | } |
| 201 | types := dagEntryTypes(t, path) |
| 202 | if types[len(types)-1] != sessionDAGTypeRewind { |
| 203 | t.Fatalf("entries = %v", types) |
| 204 | } |
| 205 | loaded, err := LoadSession(path) |
| 206 | if err != nil || len(loaded.Messages) != 3 || loaded.LeafID() != msgs[2].ID { |
| 207 | t.Fatalf("reload len=%d leaf=%q err=%v", len(loaded.Messages), loaded.LeafID(), err) |
| 208 | } |
| 209 | s.Add(provider.Message{Role: provider.RoleAssistant, Content: "a2-new"}) |
| 210 | if err := s.Save(path); err != nil { |
| 211 | t.Fatal(err) |
| 212 | } |
| 213 | loaded, err = LoadSession(path) |
| 214 | if err != nil || strings.Join(dagContents(loaded.Messages), ",") != "sys,q1,a1,a2-new" { |
| 215 | t.Fatalf("after re-append: %v err=%v", dagContents(loaded.Messages), err) |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | func TestLoadedSchemaOneLogStaysNativeEvenUnderLease(t *testing.T) { |
| 220 | t.Setenv(SessionLogSchemaEnv, "v1") |
| 221 | path := dagTestSession(t) |
| 222 | v1 := dagSavedSession(t, path, "q1", "a1") |
| 223 | if err := os.Unsetenv(SessionLogSchemaEnv); err != nil { |
| 224 | t.Fatal(err) |
| 225 | } |
| 226 | loaded, err := LoadSession(path) |
| 227 | if err != nil { |
| 228 | t.Fatal(err) |
| 229 | } |
| 230 | loaded.Add(provider.Message{Role: provider.RoleUser, Content: "q2"}) |
| 231 | if err := loaded.Save(path); err != nil { |
| 232 | t.Fatal(err) |
| 233 | } |
| 234 | if probe, _ := probeSessionEventLog(path); probe.dag { |
| 235 | t.Fatal("unleased writer must not upgrade an existing schema-1 log") |
| 236 | } |
| 237 | lease, err := TryAcquireSessionLease(path) |
| 238 | if err != nil { |
| 239 | t.Fatal(err) |
| 240 | } |
| 241 | defer lease.Release() |
| 242 | loaded.Add(provider.Message{Role: provider.RoleAssistant, Content: "a2"}) |
| 243 | if err := loaded.Save(path); err != nil { |
| 244 | t.Fatal(err) |
| 245 | } |
| 246 | probe, _ := probeSessionEventLog(path) |
| 247 | if probe.dag { |
| 248 | t.Fatal("a lease must not implicitly upgrade an existing schema-1 log") |
| 249 | } |
| 250 | again, err := LoadSession(path) |
| 251 | if err != nil || strings.Join(dagContents(again.Messages), ",") != "sys,q1,a1,q2,a2" { |
| 252 | t.Fatalf("after native append: %v err=%v", dagContents(again.Messages), err) |
| 253 | } |
| 254 | for i := range v1.Messages { |
| 255 | if again.Messages[i].ID != loaded.Messages[i].ID { |
| 256 | t.Fatalf("message %d id changed across native append", i) |
| 257 | } |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | func TestDAGSaveConcurrentWritersForkInsteadOfConflicting(t *testing.T) { |
| 262 | path := dagTestSession(t) |
| 263 | a := dagSavedSession(t, path, "q1", "a1") |
| 264 | b, err := LoadSession(path) |
| 265 | if err != nil { |
| 266 | t.Fatal(err) |
| 267 | } |
| 268 | a.Add(provider.Message{Role: provider.RoleUser, Content: "q2-from-a"}) |
| 269 | if err := a.Save(path); err != nil { |
| 270 | t.Fatal(err) |
| 271 | } |
| 272 | b.Add(provider.Message{Role: provider.RoleUser, Content: "q2-from-b"}) |
| 273 | if err := b.Save(path); err != nil { |
| 274 | t.Fatalf("second writer must not conflict: %v", err) |
| 275 | } |
| 276 | refA, _ := a.Head() |
| 277 | refB, _ := b.Head() |
| 278 | if refA.HeadID != SessionMainHead || refB.HeadID == SessionMainHead || refB.HeadID == "" { |
| 279 | t.Fatalf("heads a=%+v b=%+v", refA, refB) |
| 280 | } |
| 281 | events := b.DrainHeadEvents() |
| 282 | if len(events) != 1 || events[0].Kind != HeadEventForkedConcurrent || events[0].HeadID != refB.HeadID { |
| 283 | t.Fatalf("events = %+v", events) |
| 284 | } |
| 285 | heads, err := ListSessionHeads(path) |
| 286 | if err != nil || len(heads) != 2 || heads[1].Kind != HeadKindConcurrent || heads[1].MessageCount != 4 || heads[0].MessageCount != 4 { |
| 287 | t.Fatalf("heads = %+v err=%v", heads, err) |
| 288 | } |
| 289 | st := dagReplay(t, path) |
| 290 | if got := dagChain(st, SessionMainHead); strings.Join(got, ",") != "sys,q1,a1,q2-from-a" { |
| 291 | t.Fatalf("main chain %v", got) |
| 292 | } |
| 293 | if got := dagChain(st, refB.HeadID); strings.Join(got, ",") != "sys,q1,a1,q2-from-b" { |
| 294 | t.Fatalf("fork chain %v", got) |
| 295 | } |
| 296 | assertNoTranscriptCopies(t, path) |
| 297 | // Each writer keeps extending its own head afterwards. |
| 298 | a.Add(provider.Message{Role: provider.RoleAssistant, Content: "a2-from-a"}) |
| 299 | b.Add(provider.Message{Role: provider.RoleAssistant, Content: "a2-from-b"}) |
| 300 | if err := a.Save(path); err != nil { |
| 301 | t.Fatal(err) |
| 302 | } |
| 303 | if err := b.Save(path); err != nil { |
| 304 | t.Fatal(err) |
| 305 | } |
| 306 | if len(b.DrainHeadEvents()) != 0 { |
| 307 | t.Fatal("continuing on the fork must not fork again") |
| 308 | } |
| 309 | st = dagReplay(t, path) |
| 310 | if len(st.heads) != 2 || len(dagChain(st, SessionMainHead)) != 5 || len(dagChain(st, refB.HeadID)) != 5 { |
| 311 | t.Fatalf("heads=%d main=%d fork=%d", len(st.heads), len(dagChain(st, SessionMainHead)), len(dagChain(st, refB.HeadID))) |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | func TestDAGSaveBehindDiskReportsStalePrefix(t *testing.T) { |
| 316 | path := dagTestSession(t) |
| 317 | a := dagSavedSession(t, path, "q1", "a1") |
| 318 | b, err := LoadSession(path) |
| 319 | if err != nil { |
| 320 | t.Fatal(err) |
| 321 | } |
| 322 | a.Add(provider.Message{Role: provider.RoleUser, Content: "q2"}) |
| 323 | if err := a.Save(path); err != nil { |
| 324 | t.Fatal(err) |
| 325 | } |
| 326 | err = b.Save(path) |
| 327 | if !errors.Is(err, ErrSessionSnapshotConflict) { |
| 328 | t.Fatalf("behind writer err = %v, want stale prefix conflict", err) |
| 329 | } |
| 330 | if kind, ok := SnapshotConflictKind(err); !ok || kind != SessionSnapshotConflictStalePrefix { |
| 331 | t.Fatalf("kind = %q ok=%v", kind, ok) |
| 332 | } |
| 333 | if st := dagReplay(t, path); len(st.heads) != 1 || len(dagChain(st, SessionMainHead)) != 4 { |
| 334 | t.Fatal("a behind writer must not append or fork") |
| 335 | } |
| 336 | assertNoTranscriptCopies(t, path) |
| 337 | } |
| 338 | |
| 339 | func TestDAGSaveRedactionCompactErasesBytesUnderLease(t *testing.T) { |
| 340 | path := dagTestSession(t) |
| 341 | lease, err := TryAcquireSessionLease(path) |
| 342 | if err != nil { |
| 343 | t.Fatal(err) |
| 344 | } |
| 345 | defer lease.Release() |
| 346 | s := dagSavedSession(t, path, "q1 secret-token", "a1") |
| 347 | msgs := s.Snapshot() |
| 348 | ids := []string{msgs[0].ID, msgs[1].ID, msgs[2].ID} |
| 349 | msgs[1].Content = "q1 [redacted]" |
| 350 | s.Rewrite(msgs, "redact") |
| 351 | if err := s.SaveRewriteCompact(path); err != nil { |
| 352 | t.Fatal(err) |
| 353 | } |
| 354 | raw, _ := os.ReadFile(store.SessionEventLog(path)) |
| 355 | if strings.Contains(string(raw), "secret-token") { |
| 356 | t.Fatal("redaction left the secret in the log") |
| 357 | } |
| 358 | st := dagReplay(t, path) |
| 359 | if st.generation != 2 { |
| 360 | t.Fatalf("generation = %d, want rotation", st.generation) |
| 361 | } |
| 362 | loaded, err := LoadSession(path) |
| 363 | if err != nil || loaded.Messages[1].Content != "q1 [redacted]" { |
| 364 | t.Fatalf("reload = %+v err=%v", loaded.Messages, err) |
| 365 | } |
| 366 | for i, id := range ids { |
| 367 | if loaded.Messages[i].ID != id { |
| 368 | t.Fatalf("message %d id changed by redaction", i) |
| 369 | } |
| 370 | } |
| 371 | if ref, _ := s.Head(); ref.LogGeneration != 2 { |
| 372 | t.Fatalf("session did not follow the rotation: %+v", ref) |
| 373 | } |
| 374 | } |
| 375 | |
| 376 | func TestDAGSaveOversizeLogRotatesUnderLease(t *testing.T) { |
| 377 | path := dagTestSession(t) |
| 378 | lease, err := TryAcquireSessionLease(path) |
| 379 | if err != nil { |
| 380 | t.Fatal(err) |
| 381 | } |
| 382 | defer lease.Release() |
| 383 | big := strings.Repeat("x", 100<<10) |
| 384 | s := dagSavedSession(t, path, big+"1", big+"2", big+"3", big+"4", big+"5", big+"6") |
| 385 | msgs := s.Snapshot() |
| 386 | s.Rewrite(msgs[:2], "rewind_truncate") |
| 387 | if err := s.SaveRewrite(path); err != nil { |
| 388 | t.Fatal(err) |
| 389 | } |
| 390 | st := dagReplay(t, path) |
| 391 | if st.generation != 2 || len(st.nodes) != 2 { |
| 392 | t.Fatalf("generation=%d nodes=%d, want rotated log with only the live chain", st.generation, len(st.nodes)) |
| 393 | } |
| 394 | if info, _ := os.Stat(store.SessionEventLog(path)); info.Size() > int64(len(big))*3 { |
| 395 | t.Fatalf("rotated log still %d bytes", info.Size()) |
| 396 | } |
| 397 | loaded, err := LoadSession(path) |
| 398 | if err != nil || len(loaded.Messages) != 2 { |
| 399 | t.Fatalf("reload len=%d err=%v", len(loaded.Messages), err) |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | func TestDAGSaveCrashAtAppendRecoversOnNextSave(t *testing.T) { |
| 404 | path := dagTestSession(t) |
| 405 | s := dagSavedSession(t, path, "q1") |
| 406 | s.Add(provider.Message{Role: provider.RoleAssistant, Content: "a1"}) |
| 407 | fileutil.CrashPoint = func(op, _ string) { |
| 408 | if op == "dag-append" { |
| 409 | panic("crash:dag-append") |
| 410 | } |
| 411 | } |
| 412 | func() { |
| 413 | defer func() { |
| 414 | if recover() == nil { |
| 415 | t.Fatal("crash point did not fire") |
| 416 | } |
| 417 | }() |
| 418 | _ = s.Save(path) |
| 419 | }() |
| 420 | fileutil.CrashPoint = nil |
| 421 | // The crash happened inside the locked save; a later save from the same |
| 422 | // session must still land exactly one copy of the message. |
| 423 | if err := s.Save(path); err != nil { |
| 424 | t.Fatalf("save after crash: %v", err) |
| 425 | } |
| 426 | loaded, err := LoadSession(path) |
| 427 | if err != nil || strings.Join(dagContents(loaded.Messages), ",") != "sys,q1,a1" { |
| 428 | t.Fatalf("after crash: %v err=%v", dagContents(loaded.Messages), err) |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | func TestDAGSaveConcurrentGoroutinesExtendTheirOwnHeads(t *testing.T) { |
| 433 | path := dagTestSession(t) |
| 434 | a := dagSavedSession(t, path, "q1", "a1") |
| 435 | b, err := LoadSession(path) |
| 436 | if err != nil { |
| 437 | t.Fatal(err) |
| 438 | } |
| 439 | const rounds = 15 |
| 440 | var wg sync.WaitGroup |
| 441 | run := func(s *Session, tag string) { |
| 442 | defer wg.Done() |
| 443 | for i := range rounds { |
| 444 | s.Add(provider.Message{Role: provider.RoleUser, Content: tag + string(rune('a'+i))}) |
| 445 | if err := s.Save(path); err != nil { |
| 446 | t.Errorf("%s save %d: %v", tag, i, err) |
| 447 | return |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | wg.Add(2) |
| 452 | go run(a, "A") |
| 453 | go run(b, "B") |
| 454 | wg.Wait() |
| 455 | st := dagReplay(t, path) |
| 456 | if st.damaged || len(st.heads) != 2 { |
| 457 | t.Fatalf("damaged=%v heads=%d", st.damaged, len(st.heads)) |
| 458 | } |
| 459 | for _, id := range st.headOrder { |
| 460 | if got := len(dagChain(st, id)); got != 3+rounds { |
| 461 | t.Fatalf("head %s chain length %d", id, got) |
| 462 | } |
| 463 | } |
| 464 | assertNoTranscriptCopies(t, path) |
| 465 | } |
| 466 | |
| 467 | func TestExportSessionSchemaOneWritesReadableSchemaOneSession(t *testing.T) { |
| 468 | path := dagTestSession(t) |
| 469 | s := dagSavedSession(t, path, "q1", "a1") |
| 470 | dst := filepath.Join(t.TempDir(), "export.jsonl") |
| 471 | if err := ExportSessionSchemaOne(path, dst); err != nil { |
| 472 | t.Fatal(err) |
| 473 | } |
| 474 | probe, err := probeSessionEventLog(dst) |
| 475 | if err != nil || !probe.native || probe.dag { |
| 476 | t.Fatalf("export probe = %+v err=%v", probe, err) |
| 477 | } |
| 478 | exported, err := LoadSession(dst) |
| 479 | if err != nil || strings.Join(dagContents(exported.Messages), ",") != strings.Join(dagContents(s.Messages), ",") { |
| 480 | t.Fatalf("export reload = %v err=%v", dagContents(exported.Messages), err) |
| 481 | } |
| 482 | if _, ok := exported.Head(); ok { |
| 483 | t.Fatal("exported session must be schema 1") |
| 484 | } |
| 485 | if err := ExportSessionSchemaOne(path, dst); err == nil { |
| 486 | t.Fatal("export must refuse to overwrite an existing destination") |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | func TestDAGSaveIndependentIdenticalTranscriptsConverge(t *testing.T) { |
| 491 | path := dagTestSession(t) |
| 492 | a := dagSavedSession(t, path, "q1", "a1") |
| 493 | b := NewSession("sys") |
| 494 | b.Add(provider.Message{Role: provider.RoleUser, Content: "q1"}) |
| 495 | b.Add(provider.Message{Role: provider.RoleAssistant, Content: "a1"}) |
| 496 | b.Add(provider.Message{Role: provider.RoleUser, Content: "q2"}) |
| 497 | if err := b.Save(path); err != nil { |
| 498 | t.Fatal(err) |
| 499 | } |
| 500 | st := dagReplay(t, path) |
| 501 | if len(st.heads) != 1 || strings.Join(dagChain(st, SessionMainHead), ",") != "sys,q1,a1,q2" { |
| 502 | t.Fatalf("identical prefix must extend main: heads=%d chain=%v", len(st.heads), dagChain(st, SessionMainHead)) |
| 503 | } |
| 504 | for i := range a.Messages { |
| 505 | if b.Messages[i].ID != a.Messages[i].ID { |
| 506 | t.Fatalf("message %d: independent writer did not adopt the persisted id", i) |
| 507 | } |
| 508 | } |
| 509 | if ref, _ := b.Head(); ref.HeadID != SessionMainHead || ref.LeafID != b.LeafID() { |
| 510 | t.Fatalf("b head = %+v", ref) |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | func TestDAGSaveUnrelatedWriterForksInsteadOfRewinding(t *testing.T) { |
| 515 | path := dagTestSession(t) |
| 516 | dagSavedSession(t, path, "q1", "a1", "q2", "a2") |
| 517 | b := NewSession("sys") |
| 518 | b.Add(provider.Message{Role: provider.RoleUser, Content: "q1"}) |
| 519 | b.Add(provider.Message{Role: provider.RoleAssistant, Content: "a1"}) |
| 520 | b.Add(provider.Message{Role: provider.RoleUser, Content: "q2-other"}) |
| 521 | if err := b.Save(path); err != nil { |
| 522 | t.Fatal(err) |
| 523 | } |
| 524 | st := dagReplay(t, path) |
| 525 | ref, _ := b.Head() |
| 526 | if len(st.heads) != 2 || ref.HeadID == SessionMainHead { |
| 527 | t.Fatalf("unrelated writer must fork: heads=%d ref=%+v", len(st.heads), ref) |
| 528 | } |
| 529 | if got := dagChain(st, SessionMainHead); strings.Join(got, ",") != "sys,q1,a1,q2,a2" { |
| 530 | t.Fatalf("main was rewritten by an unrelated writer: %v", got) |
| 531 | } |
| 532 | if got := dagChain(st, ref.HeadID); strings.Join(got, ",") != "sys,q1,a1,q2-other" { |
| 533 | t.Fatalf("fork chain %v", got) |
| 534 | } |
| 535 | } |
| 536 |