sm-journal-plugin/mcp_smoke_test.go

package journal_test

import (
	"context"
	"os"
	"path/filepath"
	"slices"
	"strings"
	"testing"

	journal "git.golem15.com/golem15/sm-journal-plugin"
	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/compass"
	"git.golem15.com/golem15/summercms/modules/pact"
	"git.golem15.com/golem15/summercms/modules/party"
	"git.golem15.com/golem15/summercms/modules/surf"
)

// TestJournalMCPSmoke pins the Journal's MCP declaration (P-17, D-15, D-16):
// exactly the seven post, category and tag tools and the draft_post prompt,
// each with Guard backend and golem15.journal.access_posts, delete marked
// destructive, and every tool bound to a route the plugin registers (the
// same method and pattern in a router built from the booted plugins).
// Runs under -short (no database).
func TestJournalMCPSmoke(t *testing.T) {
	var _ pact.HasMCP = (*journal.Plugin)(nil)
	decl := (&journal.Plugin{}).MCP()

	wantTools := []string{"list_posts", "show_post", "list_categories", "list_tags", "create_post", "update_post", "delete_post"}
	var names []string
	for _, tool := range decl.Tools {
		names = append(names, tool.Name)
		if tool.Guard != "backend" || !slices.Equal(tool.Permissions, []string{"golem15.journal.access_posts"}) {
			t.Errorf("tool %s guard %q permissions %v, want backend and access_posts", tool.Name, tool.Guard, tool.Permissions)
		}
		if tool.Title == "" || tool.Description == "" || tool.Input == nil {
			t.Errorf("tool %s lacks a title, description or input", tool.Name)
		}
		if (tool.Destructive != nil && *tool.Destructive) != (tool.Name == "delete_post") {
			t.Errorf("tool %s destructive = %v", tool.Name, tool.Destructive)
		}
	}
	if !slices.Equal(names, wantTools) {
		t.Fatalf("tools %v, want %v", names, wantTools)
	}
	if len(decl.Prompts) != 1 || decl.Prompts[0].Name != "draft_post" || decl.Prompts[0].Guard != "backend" ||
		!slices.Equal(decl.Prompts[0].Permissions, []string{"golem15.journal.access_posts"}) {
		t.Fatalf("prompts %+v, want draft_post (backend, access_posts)", decl.Prompts)
	}
	prompt := decl.Prompts[0]
	if len(prompt.Arguments) != 2 || prompt.Arguments[0].Name != "topic" || !prompt.Arguments[0].Required || prompt.Arguments[1].Name != "tone" || prompt.Arguments[1].Required {
		t.Fatalf("draft_post arguments %+v, want topic (required) and tone", prompt.Arguments)
	}
	msgs, err := prompt.Render(context.Background(), map[string]string{"topic": "Release notes", "tone": "formal"})
	if err != nil || len(msgs) != 1 || msgs[0].Role != "user" ||
		!strings.Contains(msgs[0].Text, "Release notes") || !strings.Contains(msgs[0].Text, "formal") ||
		!strings.Contains(msgs[0].Text, "journal_create_post") || !strings.Contains(msgs[0].Text, "published set to false") {
		t.Fatalf("draft_post render = %+v, %v", msgs, err)
	}

	// Every tool's method and path is a route the plugin registers.
	dir := t.TempDir()
	if err := os.WriteFile(filepath.Join(dir, "app.yaml"), []byte("name: journal-mcp\nlocale: en\nfallback_locale: en\nurl: https://app.example.test\n"), 0o644); err != nil {
		t.Fatal(err)
	}
	cfg, err := compass.Open(compass.Options{Dir: dir, Environ: []string{"SUMMER_ENV=development", "SUMMER_ADMIN__JWT__SECRET=" + adminJWTSecret}})
	if err != nil {
		t.Fatal(err)
	}
	for key, value := range map[string]any{"http.body_limits.default_bytes": 1048576, "http.body_limits.upload_bytes": 8388608} {
		if err := cfg.Set(key, value); err != nil {
			t.Fatal(err)
		}
	}
	app := backpack.New(cfg)
	plugins, err := party.Activate(app, []string{"golem15.translate", "golem15.journal"})
	if err != nil {
		t.Fatal(err)
	}
	rt, err := surf.BuildRouter(app, plugins)
	if err != nil {
		t.Fatalf("surf.BuildRouter: %v", err)
	}
	routes := map[string]string{}
	for _, r := range rt.Routes() {
		routes[r.Method+" "+r.Pattern] = r.PluginID
	}
	for _, tool := range decl.Tools {
		if owner, ok := routes[tool.Method+" "+tool.Path]; !ok || owner != "golem15.journal" {
			t.Errorf("tool %s targets %s %s, which golem15.journal does not register (owner %q)", tool.Name, tool.Method, tool.Path, owner)
		}
	}
}