test: add response_metadata test.

README.md

@@ -5,5 +5,9 @@ Estudio: Librería para jugar con Freeswitch.
 + Al conectarse al servidor se recibe: "Content-Type: auth/request"
 + comando para autenticarse: "auth"
 + respuesta de autenticacion correcta: "Content-Type: command/reply\nReply-Text: +OK accepted"
-
+## Tests
+Correr los tests
+```sh
+python -m unittest tests/response_metadata.py
+```
 

tests/response_metadata.py

@@ -0,0 +1,12 @@
+import unittest
+
+from FreeTwitch.response_metadata import ResponseMetadata
+
+class TestResponseMetadata(unittest.TestCase):
+
+    def test_from_string(self):
+        response = """Content-Type: api/response
+Content-Length: 28"""
+        response_metadata = ResponseMetadata.from_string(response)
+        self.assertEqual(28, response_metadata.length)
+