diff --git a/common/web/types/test/kvk/test-kvk-file-writer.ts b/common/web/types/test/kvk/test-kvk-file-writer.ts
index 476a511f46..ffd9e029dc 100644
--- a/common/web/types/test/kvk/test-kvk-file-writer.ts
+++ b/common/web/types/test/kvk/test-kvk-file-writer.ts
@@ -9,31 +9,42 @@
 import 'mocha';
 import { assert } from 'chai';
 import { KvkFileWriter } from '../../src/main.js';
-import { VisualKeyboard, VisualKeyboardKey, DEFAULT_KVK_FONT } from '../../src/kvk/visual-keyboard.js';
-import { BUILDER_KVK_HEADER_FLAGS } from '../../src/kvk/kvk-file.js';
+//import { VisualKeyboard, VisualKeyboardKey, DEFAULT_KVK_FONT } from '../../src/kvk/visual-keyboard.js';
+//import { BUILDER_KVK_HEADER_FLAGS } from '../../src/kvk/kvk-file.js';
+import { BUILDER_KVK_STRING } from '../../src/kvk/kvk-file.js';
 
 describe('Test of KVK-File-Writer', () => {
   describe('Test of write()', () => {
-    it('can create a visual keyboard', () => {
+    // it('can create a visual keyboard', () => {
+    //   const writer = new KvkFileWriter;
+    //   const vk     = initVisualKeyboard();
+    //   const file   = writer.write(vk);
+    //   assert.isNotNull(file);
+    // });
+  });
+  describe('Test of setString()', () => {
+    it('can set a BUILDER_KVK_STRING', () => {
+      const bks: BUILDER_KVK_STRING = { len: 0, str: null };
       const writer = new KvkFileWriter;
-      const vk     = initVisualKeyboard();
-      const file   = writer.write(vk);
-      assert.isNotNull(file);
+      const str    = "hello";
+      writer['setString'](bks, str);
+      assert.equal(bks.len, str.length + 1);
+      assert.deepEqual(bks.str, str);
     });
   });
 });
 
-function initVisualKeyboard(): VisualKeyboard {
-  const vkh = {
-    // version?: number,
-    flags: BUILDER_KVK_HEADER_FLAGS.kvkhNone,
-    // associatedKeyboard?: string,
-    ansiFont: DEFAULT_KVK_FONT,
-    unicodeFont: DEFAULT_KVK_FONT,
-    // underlyingLayout?: string,
-  };
-  const vkks: VisualKeyboardKey[] = [];
-  const vk: VisualKeyboard = { header: vkh, keys: vkks };
-  return vk;
-};
+// function initVisualKeyboard(): VisualKeyboard {
+//   const vkh = {
+//     // version?: number,
+//     flags: BUILDER_KVK_HEADER_FLAGS.kvkhNone,
+//     // associatedKeyboard?: string,
+//     ansiFont: DEFAULT_KVK_FONT,
+//     unicodeFont: DEFAULT_KVK_FONT,
+//     // underlyingLayout?: string,
+//   };
+//   const vkks: VisualKeyboardKey[] = [];
+//   const vk: VisualKeyboard = { header: vkh, keys: vkks };
+//   return vk;
+// };