diff --git a/__mocks__/gatsby-plugin-firebase.js b/__mocks__/gatsby-plugin-firebase.js
index 8678a132..fa530f79 100644
--- a/__mocks__/gatsby-plugin-firebase.js
+++ b/__mocks__/gatsby-plugin-firebase.js
@@ -115,11 +115,19 @@ class Database {
 
   initializeData() {
     const resumes = {};
+
     const demoStateResume = Database.readFile('../src/data/demoState.json');
+    let date = new Date('December 15, 2020 11:20:25');
+    demoStateResume.updatedAt = date.valueOf();
+    date.setMonth(date.getMonth() - 2);
+    demoStateResume.createdAt = date.valueOf();
     resumes[this.demoStateResumeId] = demoStateResume;
+
     const initialStateResume = Database.readFile(
       '../src/data/initialState.json',
     );
+    initialStateResume.updatedAt = date.valueOf();
+    initialStateResume.createdAt = date.valueOf();
     resumes[this.initialStateResumeId] = initialStateResume;
 
     for (var key in resumes) {
@@ -128,11 +136,6 @@ class Database {
       resume.id = key;
       resume.name = `Test Resume ${key}`;
       resume.user = this.anonymousUser.uid;
-
-      let date = new Date('December 15, 2020 11:20:25');
-      resume.updatedAt = date.valueOf();
-      date.setMonth(date.getMonth() - 2);
-      resume.createdAt = date.valueOf();
     }
 
     this.#data[this.resumesPath] = resumes;
diff --git a/src/pages/app/__tests__/builder.test.js b/src/pages/app/__tests__/builder.test.js
index 45ceaec6..22ccbf9e 100644
--- a/src/pages/app/__tests__/builder.test.js
+++ b/src/pages/app/__tests__/builder.test.js
@@ -25,7 +25,7 @@ beforeEach(() => {
 
 afterEach(cleanup);
 
-describe('builder', () => {
+describe('Builder', () => {
   const resumesPath = FirebaseStub.database().resumesPath;
   let resumeId = null;
   let resume = null;
@@ -107,4 +107,34 @@ describe('builder', () => {
       );
     });
   });
+
+  describe('settings', () => {
+    it('allow to change the language', async () => {
+      const languageSelectElement = screen.getByLabelText('Language');
+      console.log(languageSelectElement.value);
+      fireEvent.change(languageSelectElement, { target: { value: 'it' } });
+      console.log(languageSelectElement.value);
+      expect(languageSelectElement).toHaveValue('it');
+
+      expect(
+        screen.getByLabelText(new RegExp('date of birth', 'i')),
+      ).toBeInTheDocument();
+      expect(
+        screen.getByLabelText(new RegExp('data di nascita', 'i')),
+      ).toBeInTheDocument();
+
+      await waitFor(() => expect(mockUpdateFunction).toHaveBeenCalledTimes(1), {
+        timeout: DebounceWaitTime,
+      });
+      const mockUpdateFunctionCallArgument =
+        mockUpdateFunction.mock.calls[0][0];
+      expect(mockUpdateFunctionCallArgument.id).toBe(resume.id);
+      expect(mockUpdateFunctionCallArgument.profile.address.line1).toBe(
+        newInputValue,
+      );
+      expect(mockUpdateFunctionCallArgument.updatedAt).toBeGreaterThanOrEqual(
+        now,
+      );
+    });
+  });
 });