| 1 | package agent |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "fmt" |
| 6 | "os" |
| 7 | "path/filepath" |
| 8 | "testing" |
| 9 | |
| 10 | "reasonix/internal/provider" |
| 11 | "reasonix/internal/store" |
| 12 | ) |
| 13 | |
| 14 | type checkpointObserver struct{ events []SessionPersistEvent } |
| 15 | |
| 16 | func (o *checkpointObserver) EnqueueSessionPersist(e SessionPersistEvent) bool { |
| 17 | o.events = append(o.events, e) |
| 18 | return true |
| 19 | } |
| 20 | |
| 21 | func TestToolCheckpointDefersOnlyDerivedProjection(t *testing.T) { |
| 22 | path := schemaOneSessionPath(t, "session.jsonl") |
| 23 | s := NewSession("system") |
| 24 | s.Add(provider.Message{Role: provider.RoleUser, Content: "task"}) |
| 25 | bindSessionWriter(t, s, path) |
| 26 | observer := &checkpointObserver{} |
| 27 | s.SetPersistObserver(observer) |
| 28 | if err := s.SaveSnapshot(path); err != nil { |
| 29 | t.Fatal(err) |
| 30 | } |
| 31 | before, err := os.ReadFile(store.SessionDisplayIndex(path)) |
| 32 | if err != nil { |
| 33 | t.Fatal(err) |
| 34 | } |
| 35 | observer.events = nil |
| 36 | for i := range 3 { |
| 37 | id := fmt.Sprint(i) |
| 38 | s.AddBatch(provider.Message{Role: provider.RoleAssistant, ToolCalls: []provider.ToolCall{{ID: id, Name: "write_file", Arguments: `{}`}}}, provider.Message{Role: provider.RoleTool, ToolCallID: id, Name: "write_file", Content: "done", ToolRunState: provider.ToolRunCompleted}) |
| 39 | if err := s.SaveToolCheckpoint(path, false); err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | loaded, err := LoadSession(path) |
| 43 | if err != nil { |
| 44 | t.Fatal(err) |
| 45 | } |
| 46 | if len(loaded.Snapshot()) != len(s.Snapshot()) { |
| 47 | t.Fatal("canonical receipt was not durable") |
| 48 | } |
| 49 | } |
| 50 | after, err := os.ReadFile(store.SessionDisplayIndex(path)) |
| 51 | if err != nil { |
| 52 | t.Fatal(err) |
| 53 | } |
| 54 | if !bytes.Equal(before, after) || len(observer.events) != 0 { |
| 55 | t.Fatal("tool checkpoint refreshed the display projection") |
| 56 | } |
| 57 | if s.snapshotUpToDate(path) { |
| 58 | t.Fatal("deferred projection bypasses normal save") |
| 59 | } |
| 60 | if err := s.SaveSnapshot(path); err != nil { |
| 61 | t.Fatal(err) |
| 62 | } |
| 63 | after, err = os.ReadFile(store.SessionDisplayIndex(path)) |
| 64 | if err != nil { |
| 65 | t.Fatal(err) |
| 66 | } |
| 67 | if bytes.Equal(before, after) || len(observer.events) != 1 || !s.snapshotUpToDate(path) { |
| 68 | t.Fatal("normal save did not publish deferred projection") |
| 69 | } |
| 70 | if observer.events[0].Rewrite { |
| 71 | t.Fatal("append checkpoint falsely invalidated history as a rewrite") |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | func TestToolCheckpointRewriteKeepsCanonicalEvidence(t *testing.T) { |
| 76 | path := filepath.Join(t.TempDir(), "session.jsonl") |
| 77 | s := NewSession("system") |
| 78 | s.Add(provider.Message{Role: provider.RoleUser, Content: "old"}) |
| 79 | bindSessionWriter(t, s, path) |
| 80 | if err := s.SaveSnapshot(path); err != nil { |
| 81 | t.Fatal(err) |
| 82 | } |
| 83 | observer := &checkpointObserver{} |
| 84 | s.SetPersistObserver(observer) |
| 85 | s.mu.Lock() |
| 86 | s.Messages[1].Content = "repaired" |
| 87 | s.version++ |
| 88 | s.rewriteVersion++ |
| 89 | s.mu.Unlock() |
| 90 | if err := s.SaveToolCheckpoint(path, true); err != nil { |
| 91 | t.Fatal(err) |
| 92 | } |
| 93 | loaded, err := LoadSession(path) |
| 94 | if err != nil { |
| 95 | t.Fatal(err) |
| 96 | } |
| 97 | if len(observer.events) != 1 || !observer.events[0].Rewrite { |
| 98 | t.Fatal("rewrite checkpoint did not invalidate indexed history") |
| 99 | } |
| 100 | if loaded.Snapshot()[1].Content != "repaired" { |
| 101 | t.Fatal("rewrite was not durable") |
| 102 | } |
| 103 | if err := s.SaveSnapshot(path); err != nil { |
| 104 | t.Fatal(err) |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | func TestToolCheckpointReloadRefreshesProjection(t *testing.T) { |
| 109 | path := schemaOneSessionPath(t, "session.jsonl") |
| 110 | s := NewSession("system") |
| 111 | if err := s.SaveSnapshot(path); err != nil { |
| 112 | t.Fatal(err) |
| 113 | } |
| 114 | s.Add(provider.Message{Role: provider.RoleUser, Content: "durable task"}) |
| 115 | if err := s.SaveToolCheckpoint(path, false); err != nil { |
| 116 | t.Fatal(err) |
| 117 | } |
| 118 | loaded, err := LoadSession(path) |
| 119 | if err != nil { |
| 120 | t.Fatal(err) |
| 121 | } |
| 122 | if err := loaded.SaveSnapshot(path); err != nil { |
| 123 | t.Fatal(err) |
| 124 | } |
| 125 | index, err := LoadSessionDisplayIndex(store.SessionDisplayIndex(path)) |
| 126 | if err != nil { |
| 127 | t.Fatal(err) |
| 128 | } |
| 129 | if index.MessageCount != len(loaded.Snapshot()) { |
| 130 | t.Fatal("restart left stale projection") |
| 131 | } |
| 132 | } |
| 133 |