refactor(10.2-01): nest framework packages under modules

- Move remaining beach packages and embedded admin assets\n- Rewrite framework, example, build, and gate paths

modules/surf/locale_from_principal_test.go

@@ -0,0 +1,53 @@
+package surf
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.golem15.com/golem15/summercms/modules/bouncer"
+	"git.golem15.com/golem15/summercms/modules/towel"
+)
+
+func TestLocaleFromPrincipal(t *testing.T) {
+	var got string
+	var ok bool
+	h := LocaleFromPrincipal(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		got, ok = towel.Locale(r.Context())
+	}))
+
+	ctx := towel.WithLocale(t.Context(), "en")
+	ctx = bouncer.WithUser(ctx, &bouncer.Principal{PreferredLocale: "pl"})
+	req := httptest.NewRequest(http.MethodGet, "/", nil).WithContext(ctx)
+	h.ServeHTTP(httptest.NewRecorder(), req)
+	if !ok || got != "pl" {
+		t.Fatalf("locale = %q ok=%t", got, ok)
+	}
+
+	got, ok = "", false
+	ctx = towel.WithLocale(t.Context(), "en")
+	ctx = bouncer.WithUser(ctx, &bouncer.Principal{})
+	req = httptest.NewRequest(http.MethodGet, "/", nil).WithContext(ctx)
+	h.ServeHTTP(httptest.NewRecorder(), req)
+	if !ok || got != "en" {
+		t.Fatalf("empty preferred locale = %q ok=%t", got, ok)
+	}
+
+	got, ok = "", false
+	req = httptest.NewRequest(http.MethodGet, "/", nil).WithContext(towel.WithLocale(t.Context(), "de"))
+	h.ServeHTTP(httptest.NewRecorder(), req)
+	if !ok || got != "de" {
+		t.Fatalf("no principal locale = %q ok=%t", got, ok)
+	}
+}
+
+func TestBuildRouterRegistersLocaleFromPrincipal(t *testing.T) {
+	r, err := BuildRouter(nil, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	mw, ok := r.named["locale.from-principal"]
+	if !ok || mw.pluginID != "surf" || mw.fn == nil {
+		t.Fatalf("registration ok=%t mw=%+v", ok, mw)
+	}
+}