1 files changed, 47 insertions, 0 deletions
diff --git a/internal/web/server_test.go b/internal/web/server_test.go
index 25d21f4..32ee412 100644
--- a/internal/web/server_test.go
+++ b/internal/web/server_test.go
@@ -227,6 +227,53 @@ func TestServer(t *testing.T) {
 	})
 }
 
+// TestRenderOrErrorNoSectionsLang checks the "no readings at all for this
+// day" fragment (finding §1) follows lang instead of always being Polish.
+func TestRenderOrErrorNoSectionsLang(t *testing.T) {
+	html := string(renderOrError(nil, nil, "new", "horizontal", "en", nil))
+	if !strings.Contains(html, "no readings for this day") {
+		t.Errorf("en renderOrError(no secs) = %q, want it to contain %q", html, "no readings for this day")
+	}
+	if strings.Contains(html, "czyta") {
+		t.Errorf("en renderOrError(no secs) should not carry Polish wording: %q", html)
+	}
+
+	html = string(renderOrError(nil, nil, "new", "horizontal", "pl", nil))
+	if !strings.Contains(html, "brak czytań na ten dzień") {
+		t.Errorf("pl renderOrError(no secs) = %q, want it to contain %q", html, "brak czytań na ten dzień")
+	}
+}
+
+// TestIndexHTMLLangAttribute checks index.html's <html lang="..."> follows
+// cfg.UILanguage (finding §6) instead of being hardcoded "pl".
+func TestIndexHTMLLangAttribute(t *testing.T) {
+	html, err := os.ReadFile("../liturgy/testdata/2026-07-22.html")
+	if err != nil {
+		t.Fatal(err)
+	}
+	fixtureServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Write(html)
+	}))
+	defer fixtureServer.Close()
+	liturgy.SetBaseURL(fixtureServer.URL + "/liturgia/%s/Ewangelia")
+	t.Setenv("XDG_CACHE_HOME", t.TempDir())
+
+	cfg := config.Default()
+	cfg.UILanguage = "en"
+	rec := httptest.NewRecorder()
+	NewServer(cfg).ServeHTTP(rec, httptest.NewRequest("GET", "/?date=2026-07-22&v=wuj", nil))
+	if !strings.Contains(rec.Body.String(), `<html lang="en">`) {
+		t.Errorf(`en index page missing <html lang="en">: %q`, rec.Body.String()[:min(400, rec.Body.Len())])
+	}
+
+	cfg.UILanguage = "pl"
+	rec = httptest.NewRecorder()
+	NewServer(cfg).ServeHTTP(rec, httptest.NewRequest("GET", "/?date=2026-07-22&v=wuj", nil))
+	if !strings.Contains(rec.Body.String(), `<html lang="pl">`) {
+		t.Errorf(`pl index page missing <html lang="pl">: %q`, rec.Body.String()[:min(400, rec.Body.Len())])
+	}
+}
+
 // TestChooseListener exercises chooseListener's port-selection logic
 // directly (no HTTP serving): port==0 prefers defaultWebPort (1099) and
 // falls back to a free OS port when 1099 is taken, and a non-zero port is