diff --git a/packages/demobank-ui/dev.mjs b/packages/demobank-ui/dev.mjs
index 1471df2f9..0c8289156 100755
--- a/packages/demobank-ui/dev.mjs
+++ b/packages/demobank-ui/dev.mjs
@@ -18,8 +18,7 @@
 import { serve } from "@gnu-taler/web-util/node";
 import { initializeDev, getFilesInDirectory } from "@gnu-taler/web-util/build";
 
-const allTestFiles = getFilesInDirectory("src", /.test.tsx?$/);
-const devEntryPoints = ["src/stories.tsx", "src/index.tsx", ...allTestFiles];
+const devEntryPoints = ["src/stories.tsx", "src/index.tsx"];
 
 const build = initializeDev({
   source: {
diff --git a/packages/demobank-ui/package.json b/packages/demobank-ui/package.json
index f23173da4..d5dc6b1fc 100644
--- a/packages/demobank-ui/package.json
+++ b/packages/demobank-ui/package.json
@@ -8,7 +8,7 @@
     "build": "./build.mjs",
     "check": "tsc",
     "compile": "tsc && ./build.mjs",
-    "test": "mocha --require source-map-support/register 'dist/**/*.test.js' 'dist/**/test.js'",
+    "test": "./test.mjs && mocha --require source-map-support/register 'dist/test/**/*.test.js' 'dist/test/**/test.js'",
     "lint": "eslint 'src/**/*.{js,jsx,ts,tsx}'",
     "i18n:extract": "pogen extract",
     "i18n:merge": "pogen merge",
diff --git a/packages/demobank-ui/test.mjs b/packages/demobank-ui/test.mjs
new file mode 100755
index 000000000..73daa6580
--- /dev/null
+++ b/packages/demobank-ui/test.mjs
@@ -0,0 +1,30 @@
+#!/usr/bin/env node
+/*
+ This file is part of GNU Taler
+ (C) 2022 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+import { build } from "@gnu-taler/web-util/build";
+import { getFilesInDirectory } from "@gnu-taler/web-util/build";
+
+const allTestFiles = getFilesInDirectory("src", /.test.tsx?$/);
+
+await build({
+  source: {
+    js: allTestFiles,
+    assets: ["src/index.html"],
+  },
+  destination: "./dist/test",
+  css: "sass",
+});