diff --git a/2e/ej2e3.py b/2e/ej2e3.py
index b46a4e4..b4de630 100644
--- a/2e/ej2e3.py
+++ b/2e/ej2e3.py
@@ -119,3 +119,88 @@ def post_binary():
 if __name__ == '__main__':
     app = create_app()
     app.run(debug=True)
+
+import pytest
+from flask.testing import FlaskClient
+from ej2e3 import create_app
+import io
+import os
+
+@pytest.fixture
+def client() -> FlaskClient:
+   app = create_app()
+   with app.test_client() as client:
+      yield client
+
+def test_post_text(client):
+    response = client.post("/text", data="Este es un texto de prueba", content_type="text/plain")
+    assert response.status_code == 200
+    assert response.data.decode("utf-8") == "Este es un texto de prueba"
+    assert response.content_type == "text/plain"
+
+def test_post_html(client):
+    response = client.post("/html", data="<h1>Prueba HTML<H1>", content_type="text/html")
+    assert response.status_code == 200
+    assert response.data.decode("utf-8") == "<h1>Prueba HTML<H1>"
+    assert response.content_type == "text/html"
+
+def test_post_json(client):
+    response = client.post("/json", json={"key": "value"})  
+    assert response.status_code == 200
+    assert response.json == {"key": "value"})
+    assert response.content_type == "application/json"
+
+def test_post_xml(client):
+    xml_data = "<root><key>value</key></root>"
+    response = client.post("/xml", data=xml_data, content_type="application/xml")
+    assert response.status_code == 200
+    assert response.data.decode("utf-8") == xml_data
+    assert response.content_type == "application/xml"
+
+def test_post_image(client):
+   """
+   Test POST/ image endpoint -should accept an image file and save it
+   """
+   # Create a test image using scipy.misc.face()
+   from scipy import misc
+   import numpy as np
+   from PIL import Image
+
+   # Get the face image from scipy
+   face = misc.face()
+
+   # Convert to bytes in PNG format
+   img = Image.fromarray(face)
+   img_bytes_io = io.BytesIO()
+   img.save(img_bytes_io, format='PNG')
+   img_bytes = img_bytes_io_getvalue()
+
+   #Send image
+   response = client.post(
+      "/image",
+      data=img_bytes,
+      content_type="image/png"
+
+   # Check response
+    assert response.status_code == 200
+    assert response.is_json
+    assert "mensaje" in response.json
+    assert "archivo" in response.json
+
+def test_post_binary(client):
+   # Create some binary data
+   binary_data = os.urandom(64) # 64 random bytes
+
+   # Send the binary data
+   response = client.post(
+      "/binary",
+      data=binary_data,
+      content_type="application/octet-stream"
+   )
+
+   # Check response
+    assert response.status_code == 200
+    assert response.is_json
+    assert "mensaje" in response.json
+    assert "tamaño" in response.json
+    assert response.json["tamaño"] == 64  # Should match the size of our test data