diff --git a/webapp/src/components/ForgetPassword/ForgetPassword.test.js b/webapp/src/components/ForgetPassword/ForgetPassword.test.js
index 1a5b12d..7f7eef5 100644
--- a/webapp/src/components/ForgetPassword/ForgetPassword.test.js
+++ b/webapp/src/components/ForgetPassword/ForgetPassword.test.js
@@ -130,6 +130,18 @@ describe('ForgetPassword Component', () => {
         await expect(forgetPasswordFunctions.changePassword('test@example.com', 'testuser', 'newpassword', 'newpassword')).rejects.toThrow('Failed to change password');
       });
     });
+
+    describe('checkUrl', () => {
+      it('should have base url', async () => {
+        expect(forgetPasswordFunctions.apiUrl).toEqual('http://localhost:8000');
+      });
+  
+      it('should have env variable url', async () => {
+        process.env.REACT_APP_API_ENDPOINT = 'test';
+        forgetPasswordFunctions = new ForgetPasswordFunctions();
+        expect(forgetPasswordFunctions.apiUrl).toEqual('test');
+      });
+    });
   });
 });
 
diff --git a/webapp/src/components/questionView/QuestionGenerator.test.js b/webapp/src/components/questionView/QuestionGenerator.test.js
index 9764f98..d08fb0e 100644
--- a/webapp/src/components/questionView/QuestionGenerator.test.js
+++ b/webapp/src/components/questionView/QuestionGenerator.test.js
@@ -66,4 +66,14 @@ describe('QuestionGenerator', () => {
     expect(questions.length).toBe(1);
     expect(questions[0].question).toBe("What is the population of Oviedo?");
   });
+
+  it('should have the base url', () => {
+    expect(questionGenerator.apiUrl).toEqual('http://localhost:8000/questions')
+  })
+
+  it('should not have the base url', () => {
+    process.env.REACT_APP_API_ENDPOINT = 'test';
+    questionGenerator = new QuestionGenerator();
+    expect(questionGenerator.apiUrl).toEqual('test/questions')
+  })
 });
diff --git a/webapp/src/components/ranking/RankingRetriever.test.js b/webapp/src/components/ranking/RankingRetriever.test.js
new file mode 100644
index 0000000..b4c7857
--- /dev/null
+++ b/webapp/src/components/ranking/RankingRetriever.test.js
@@ -0,0 +1,44 @@
+import axios from 'axios';
+import RankingRetriever from './RankingRetriever'; // Ruta a tu archivo RankingRetriever
+
+jest.mock('axios'); // Simula las llamadas a Axios
+
+describe('RankingRetriever Tests', () => {
+  let rankingRetriever;
+
+  beforeEach(() => {
+    rankingRetriever = new RankingRetriever();
+  });
+
+  test('Throws error if endpoint is not set for getTopTen', async () => {
+    axios.get.mockRejectedValue(new Error('Endpoint not found')); // Simula error
+    
+    try {
+      await rankingRetriever.getTopTen('dummy-token');
+    } catch (error) {
+      expect(error).toBeInstanceOf(Error); // Verifica que se lanzó un error
+      expect(error.message).toContain('Endpoint not found'); // Verifica el mensaje del error
+    }
+  });
+
+  test('Throws error if endpoint is not set for getUser', async () => {
+    axios.get.mockRejectedValue(new Error('Endpoint not found')); // Simula error
+    
+    try {
+      await rankingRetriever.getUser('dummy-user', 'dummy-token');
+    } catch (error) {
+      expect(error).toBeInstanceOf(Error); // Verifica que se lanzó un error
+      expect(error.message).toContain('Endpoint not found'); // Verifica el mensaje del error
+    }
+  });
+
+  test('should have the base url', () => {
+    expect(rankingRetriever.apiUrl).toEqual('http://localhost:8000/record/ranking')
+  })
+
+  test('should not have the base url', () => {
+    process.env.REACT_APP_API_ENDPOINT = 'test';
+    rankingRetriever = new RankingRetriever();
+    expect(rankingRetriever.apiUrl).toEqual('test/record/ranking')
+  })
+});