Implement mcdoc v0.1.0: public documentation server

Single-binary Go server that fetches markdown from Gitea (mc org),
renders to HTML with goldmark (GFM, chroma syntax highlighting,
heading anchors), and serves a navigable read-only documentation site.

Features:
- Boot fetch with retry, webhook refresh, 15-minute poll fallback
- In-memory cache with atomic per-repo swap
- chi router with htmx partial responses for SPA-like navigation
- HMAC-SHA256 webhook validation
- Responsive CSS, TOC generation, priority doc ordering
- $PORT env var support for MCP agent port assignment

33 tests across config, cache, render, and server packages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-03-27 13:04:15 -07:00
parent 0578dbcb02
commit 28afaa2c56
31 changed files with 2870 additions and 1 deletions

View File

@@ -0,0 +1,325 @@
package server
import (
"crypto/hmac"
"crypto/sha256"
"encoding/hex"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"git.wntrmute.dev/mc/mcdoc/internal/cache"
"git.wntrmute.dev/mc/mcdoc/internal/render"
)
func newTestServer(t *testing.T, c *cache.Cache, secret string) *Server {
t.Helper()
srv, err := New(Config{
Cache: c,
WebhookSecret: secret,
})
if err != nil {
t.Fatalf("new server: %v", err)
}
return srv
}
func TestHealthNotReady(t *testing.T) {
c := cache.New()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/health", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusServiceUnavailable {
t.Fatalf("expected 503, got %d", w.Code)
}
}
func TestHealthReady(t *testing.T) {
c := cache.New()
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/health", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Fatalf("expected 200, got %d", w.Code)
}
}
func TestIndexNotReady(t *testing.T) {
c := cache.New()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusServiceUnavailable {
t.Fatalf("expected 503, got %d", w.Code)
}
}
func TestIndexReady(t *testing.T) {
c := cache.New()
c.SetRepo(&cache.RepoInfo{Name: "testrepo", Description: "A test"})
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Fatalf("expected 200, got %d", w.Code)
}
if !strings.Contains(w.Body.String(), "testrepo") {
t.Fatal("expected testrepo in index page")
}
}
func TestRepoPage(t *testing.T) {
c := cache.New()
c.SetRepo(&cache.RepoInfo{
Name: "mcr",
Docs: []*cache.Document{
{Repo: "mcr", URLPath: "README", Title: "README"},
},
})
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/mcr/", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Fatalf("expected 200, got %d", w.Code)
}
if !strings.Contains(w.Body.String(), "README") {
t.Fatal("expected README in repo page")
}
}
func TestRepoPageNotFound(t *testing.T) {
c := cache.New()
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/nonexistent/", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusNotFound {
t.Fatalf("expected 404, got %d", w.Code)
}
}
func TestDocPage(t *testing.T) {
c := cache.New()
c.SetRepo(&cache.RepoInfo{
Name: "mcr",
Docs: []*cache.Document{
{
Repo: "mcr",
URLPath: "ARCHITECTURE",
Title: "Architecture",
HTML: "<h1>Architecture</h1><p>content</p>",
Headings: []render.Heading{
{Level: 1, ID: "architecture", Text: "Architecture"},
},
},
},
})
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/mcr/ARCHITECTURE", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Fatalf("expected 200, got %d", w.Code)
}
body := w.Body.String()
if !strings.Contains(body, "Architecture") {
t.Fatal("expected Architecture in doc page")
}
if !strings.Contains(body, "content") {
t.Fatal("expected rendered content in doc page")
}
}
func TestDocPageNotFound(t *testing.T) {
c := cache.New()
c.SetRepo(&cache.RepoInfo{Name: "mcr"})
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/mcr/nonexistent", nil)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusNotFound {
t.Fatalf("expected 404, got %d", w.Code)
}
}
func TestHTMXPartialResponse(t *testing.T) {
c := cache.New()
c.SetRepo(&cache.RepoInfo{Name: "r", Description: "test"})
c.SetReady()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodGet, "/", nil)
req.Header.Set("HX-Request", "true")
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusOK {
t.Fatalf("expected 200, got %d", w.Code)
}
body := w.Body.String()
// Partial should not include the full layout (no <html> tag)
if strings.Contains(body, "<html") {
t.Fatal("htmx response should not include full layout")
}
}
func TestWebhookValidSignature(t *testing.T) {
secret := "test-secret"
payload := `{"repository":{"name":"mcr","full_name":"mc/mcr"}}`
mac := hmac.New(sha256.New, []byte(secret))
mac.Write([]byte(payload))
sig := hex.EncodeToString(mac.Sum(nil))
c := cache.New()
c.SetReady()
webhookCh := make(chan string, 1)
srv := newTestServer(t, c, secret)
srv.onWebhook = func(repo string) {
webhookCh <- repo
}
handler := srv.Handler()
req := httptest.NewRequest(http.MethodPost, "/webhook", strings.NewReader(payload))
req.Header.Set("X-Gitea-Signature", sig)
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusNoContent {
t.Fatalf("expected 204, got %d: %s", w.Code, w.Body.String())
}
select {
case repo := <-webhookCh:
if repo != "mcr" {
t.Fatalf("webhook repo = %q, want mcr", repo)
}
case <-time.After(2 * time.Second):
t.Fatal("webhook callback not called within timeout")
}
}
func TestWebhookInvalidSignature(t *testing.T) {
c := cache.New()
srv := newTestServer(t, c, "real-secret")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodPost, "/webhook", strings.NewReader(`{"repository":{"name":"mcr"}}`))
req.Header.Set("X-Gitea-Signature", "bad-signature")
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusForbidden {
t.Fatalf("expected 403, got %d", w.Code)
}
}
func TestWebhookNoSecret(t *testing.T) {
c := cache.New()
srv := newTestServer(t, c, "")
handler := srv.Handler()
req := httptest.NewRequest(http.MethodPost, "/webhook", strings.NewReader(`{}`))
w := httptest.NewRecorder()
handler.ServeHTTP(w, req)
if w.Code != http.StatusInternalServerError {
t.Fatalf("expected 500, got %d", w.Code)
}
}
func TestExtractRepoName(t *testing.T) {
tests := []struct {
name string
payload string
want string
}{
{
name: "valid payload",
payload: `{"repository":{"id":1,"name":"mcr","full_name":"mc/mcr"}}`,
want: "mcr",
},
{
name: "no repository",
payload: `{"action":"push"}`,
want: "",
},
{
name: "empty",
payload: `{}`,
want: "",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := extractRepoName([]byte(tt.payload))
if got != tt.want {
t.Fatalf("extractRepoName = %q, want %q", got, tt.want)
}
})
}
}
func TestSanitizePath(t *testing.T) {
tests := []struct {
input string
want string
}{
{"/foo/bar", "foo/bar"},
{"../etc/passwd", "etc/passwd"},
{"normal/path", "normal/path"},
{"../../bad", "bad"},
}
for _, tt := range tests {
got := sanitizePath(tt.input)
if got != tt.want {
t.Fatalf("sanitizePath(%q) = %q, want %q", tt.input, got, tt.want)
}
}
}