|
| 1 | +package mcp |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "encoding/json" |
| 6 | + "os" |
| 7 | + "path/filepath" |
| 8 | + "strings" |
| 9 | + "sync" |
| 10 | + "testing" |
| 11 | + |
| 12 | + sdk "github.com/modelcontextprotocol/go-sdk/mcp" |
| 13 | + |
| 14 | + "github.com/ZenNotes/tui/internal/backend" |
| 15 | +) |
| 16 | + |
| 17 | +// runServer serves Run over an in-memory transport and returns a connected |
| 18 | +// client; resolve is consulted before every tool call, like the app's config. |
| 19 | +func runServer(t *testing.T, resolve func() (backend.Target, error)) *sdk.ClientSession { |
| 20 | + t.Helper() |
| 21 | + t.Setenv("ZENNOTES_CONFIG_DIR", t.TempDir()) |
| 22 | + ctx, cancel := context.WithCancel(context.Background()) |
| 23 | + serverT, clientT := sdk.NewInMemoryTransports() |
| 24 | + done := make(chan struct{}) |
| 25 | + go func() { |
| 26 | + defer close(done) |
| 27 | + _ = Run(ctx, Options{ |
| 28 | + ResolveTarget: resolve, |
| 29 | + OpenBackend: func(t backend.Target) (Backend, error) { return backend.New(t, backend.Options{}) }, |
| 30 | + Transport: serverT, |
| 31 | + }) |
| 32 | + }() |
| 33 | + client := sdk.NewClient(&sdk.Implementation{Name: "test", Version: "0"}, nil) |
| 34 | + cs, err := client.Connect(ctx, clientT, nil) |
| 35 | + if err != nil { |
| 36 | + cancel() |
| 37 | + t.Fatal(err) |
| 38 | + } |
| 39 | + t.Cleanup(func() { |
| 40 | + _ = cs.Close() |
| 41 | + cancel() |
| 42 | + <-done |
| 43 | + }) |
| 44 | + return cs |
| 45 | +} |
| 46 | + |
| 47 | +func callTool(t *testing.T, cs *sdk.ClientSession, name string, args map[string]any) (string, bool) { |
| 48 | + t.Helper() |
| 49 | + res, err := cs.CallTool(context.Background(), &sdk.CallToolParams{Name: name, Arguments: args}) |
| 50 | + if err != nil { |
| 51 | + t.Fatalf("%s: %v", name, err) |
| 52 | + } |
| 53 | + var text strings.Builder |
| 54 | + for _, c := range res.Content { |
| 55 | + if tc, ok := c.(*sdk.TextContent); ok { |
| 56 | + text.WriteString(tc.Text) |
| 57 | + } |
| 58 | + } |
| 59 | + return text.String(), res.IsError |
| 60 | +} |
| 61 | + |
| 62 | +func seedVault(t *testing.T, note string) string { |
| 63 | + t.Helper() |
| 64 | + root := t.TempDir() |
| 65 | + if err := os.MkdirAll(filepath.Join(root, "inbox"), 0o755); err != nil { |
| 66 | + t.Fatal(err) |
| 67 | + } |
| 68 | + if err := os.WriteFile(filepath.Join(root, "inbox", note), []byte("# "+strings.TrimSuffix(note, ".md")+"\n"), 0o644); err != nil { |
| 69 | + t.Fatal(err) |
| 70 | + } |
| 71 | + return root |
| 72 | +} |
| 73 | + |
| 74 | +func TestRunFollowsAVaultSwitchOnlyAfterVaultInfo(t *testing.T) { |
| 75 | + first, second := seedVault(t, "First.md"), seedVault(t, "Second.md") |
| 76 | + var mu sync.Mutex |
| 77 | + current := backend.Target{Kind: backend.KindLocal, Root: first} |
| 78 | + cs := runServer(t, func() (backend.Target, error) { |
| 79 | + mu.Lock() |
| 80 | + defer mu.Unlock() |
| 81 | + return current, nil |
| 82 | + }) |
| 83 | + |
| 84 | + if text, isErr := callTool(t, cs, "list_notes", nil); isErr || !strings.Contains(text, "inbox/First.md") { |
| 85 | + t.Fatalf("before the switch: %s", text) |
| 86 | + } |
| 87 | + mu.Lock() |
| 88 | + current = backend.Target{Kind: backend.KindLocal, Root: second} |
| 89 | + mu.Unlock() |
| 90 | + |
| 91 | + // A write planned against the first vault must not land in the second. |
| 92 | + text, isErr := callTool(t, cs, "write_note", map[string]any{"path": "inbox/First.md", "content": "planned for the first vault"}) |
| 93 | + if !isErr || !strings.Contains(text, "The ZenNotes vault changed") || !strings.Contains(text, first) || !strings.Contains(text, second) { |
| 94 | + t.Fatalf("write after the switch: error=%v %s", isErr, text) |
| 95 | + } |
| 96 | + if _, err := os.Stat(filepath.Join(second, "inbox", "First.md")); !os.IsNotExist(err) { |
| 97 | + t.Fatalf("the refused write reached the second vault: %v", err) |
| 98 | + } |
| 99 | + if text, isErr := callTool(t, cs, "list_notes", nil); !isErr || !strings.Contains(text, "vault_info") { |
| 100 | + t.Fatalf("reads stop too until vault_info: %s", text) |
| 101 | + } |
| 102 | + |
| 103 | + text, isErr = callTool(t, cs, "vault_info", nil) |
| 104 | + if isErr { |
| 105 | + t.Fatalf("vault_info: %s", text) |
| 106 | + } |
| 107 | + var info struct { |
| 108 | + VaultRoot string `json:"vaultRoot"` |
| 109 | + Notes string `json:"notes"` |
| 110 | + } |
| 111 | + if err := json.Unmarshal([]byte(text), &info); err != nil { |
| 112 | + t.Fatalf("vault_info payload: %v\n%s", err, text) |
| 113 | + } |
| 114 | + if info.VaultRoot != second || !strings.HasPrefix(info.Notes, "The vault changed: until this call the session worked in the local vault "+first) { |
| 115 | + t.Fatalf("vault_info after the switch: %+v", info) |
| 116 | + } |
| 117 | + |
| 118 | + if text, isErr := callTool(t, cs, "list_notes", nil); isErr || !strings.Contains(text, "inbox/Second.md") || strings.Contains(text, "First.md") { |
| 119 | + t.Fatalf("after vault_info: %s", text) |
| 120 | + } |
| 121 | + if text, _ := callTool(t, cs, "vault_info", nil); strings.Contains(text, "The vault changed") { |
| 122 | + t.Fatalf("the switch note repeats: %s", text) |
| 123 | + } |
| 124 | +} |
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