| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "reflect" |
| 8 | "strings" |
| 9 | "testing" |
| 10 | |
| 11 | "reasonix/internal/control" |
| 12 | "reasonix/internal/provider" |
| 13 | ) |
| 14 | |
| 15 | type pinnedPromptProvider struct { |
| 16 | requests chan provider.Request |
| 17 | } |
| 18 | |
| 19 | func (p *pinnedPromptProvider) Name() string { return "pinned-prompt" } |
| 20 | |
| 21 | func (p *pinnedPromptProvider) Stream(_ context.Context, req provider.Request) (<-chan provider.Chunk, error) { |
| 22 | p.requests <- req |
| 23 | chunks := make(chan provider.Chunk, 2) |
| 24 | chunks <- provider.Chunk{Type: provider.ChunkText, Text: "ok"} |
| 25 | chunks <- provider.Chunk{Type: provider.ChunkDone} |
| 26 | close(chunks) |
| 27 | return chunks, nil |
| 28 | } |
| 29 | |
| 30 | func submitAndCapturePinnedRequest(t *testing.T, ctrl *control.Controller, requests <-chan provider.Request, input string) provider.Request { |
| 31 | t.Helper() |
| 32 | if err := ctrl.RunTurn(context.Background(), input); err != nil { |
| 33 | t.Fatalf("RunTurn(%q): %v", input, err) |
| 34 | } |
| 35 | var req provider.Request |
| 36 | select { |
| 37 | case req = <-requests: |
| 38 | default: |
| 39 | t.Fatalf("provider request for %q was not recorded", input) |
| 40 | } |
| 41 | if len(req.Messages) == 0 || req.Messages[0].Role != provider.RoleSystem { |
| 42 | t.Fatalf("request %q has no leading system message: %+v", input, req.Messages) |
| 43 | } |
| 44 | return req |
| 45 | } |
| 46 | |
| 47 | func pinnedRevisionBodies(messages []provider.Message) []string { |
| 48 | var out []string |
| 49 | for _, message := range messages { |
| 50 | if message.Role == provider.RoleUser && strings.HasPrefix(strings.TrimSpace(message.Content), "<pinned_context_revision") { |
| 51 | out = append(out, message.Content) |
| 52 | } |
| 53 | } |
| 54 | return out |
| 55 | } |
| 56 | |
| 57 | func assertProviderRequestPrefix(t *testing.T, previous, current provider.Request) { |
| 58 | t.Helper() |
| 59 | if len(current.Messages) < len(previous.Messages) || !reflect.DeepEqual(current.Messages[:len(previous.Messages)], previous.Messages) { |
| 60 | t.Fatalf("previous request is not an exact prefix:\nprevious: %#v\ncurrent: %#v", previous.Messages, current.Messages) |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | func TestDesktopPinAPIAppendsRevisionOnlyWhenFileChanges(t *testing.T) { |
| 65 | prov := &pinnedPromptProvider{requests: make(chan provider.Request, 4)} |
| 66 | app, tab, ctrl, _ := pinnedConcurrencyFixture(t, prov) |
| 67 | path := filepath.Join(tab.WorkspaceRoot, "context.md") |
| 68 | if err := os.WriteFile(path, []byte("version one"), 0o600); err != nil { |
| 69 | t.Fatal(err) |
| 70 | } |
| 71 | if _, err := app.PinFileForTab(tab.ID, "context.md"); err != nil { |
| 72 | t.Fatalf("PinFileForTab: %v", err) |
| 73 | } |
| 74 | |
| 75 | first := submitAndCapturePinnedRequest(t, ctrl, prov.requests, "first") |
| 76 | second := submitAndCapturePinnedRequest(t, ctrl, prov.requests, "second") |
| 77 | assertProviderRequestPrefix(t, first, second) |
| 78 | if first.Messages[0].Content != "BASE" || second.Messages[0].Content != "BASE" { |
| 79 | t.Fatalf("pinned context changed leading system messages: first=%q second=%q", first.Messages[0].Content, second.Messages[0].Content) |
| 80 | } |
| 81 | if revisions := pinnedRevisionBodies(second.Messages); len(revisions) != 1 || !strings.Contains(revisions[0], "version one") { |
| 82 | t.Fatalf("unchanged pinned file should retain exactly one revision: %v", revisions) |
| 83 | } |
| 84 | if err := os.WriteFile(path, []byte("version two"), 0o600); err != nil { |
| 85 | t.Fatal(err) |
| 86 | } |
| 87 | third := submitAndCapturePinnedRequest(t, ctrl, prov.requests, "third") |
| 88 | assertProviderRequestPrefix(t, second, third) |
| 89 | if revisions := pinnedRevisionBodies(third.Messages); len(revisions) != 2 || !strings.Contains(revisions[1], "version two") { |
| 90 | t.Fatalf("changed pinned file did not append a delta revision: %v", revisions) |
| 91 | } |
| 92 | fourth := submitAndCapturePinnedRequest(t, ctrl, prov.requests, "fourth") |
| 93 | assertProviderRequestPrefix(t, third, fourth) |
| 94 | if revisions := pinnedRevisionBodies(fourth.Messages); len(revisions) != 2 { |
| 95 | t.Fatalf("stable post-change file appended another revision: %v", revisions) |
| 96 | } |
| 97 | } |
| 98 |