Add test for authentication using private key

Signed-off-by: Roald Nefs <info@roaldnefs.com>

Author: roaldnefs

tests/fixtures/auth.json

@@ -0,0 +1,11 @@
+[
+    {
+        "method": "POST",
+        "url": "https://api.transip.nl/v6/auth",
+        "json": {
+            "token": "ACCESS_TOKEN"
+        },
+        "status": 200,
+        "content_type": "application/json"
+    }
+]

tests/test_transip.py

@@ -18,19 +18,55 @@
 # along with python-transip.  If not, see <https://www.gnu.org/licenses/>.
 
 import unittest
+import responses  # type: ignore
 
 from transip import TransIP
+from tests.utils import load_responses_fixtures
 
 
 class TransIPTest(unittest.TestCase):
     """Test the TransIP client class."""
 
     client: TransIP
+    privkey: str
 
     @classmethod
-    def setUpClass(self) -> None:
-        """Set up a minimal TransIP client."""
-        self.client = TransIP(access_token='ACCESS_TOKEN')
+    def setUpClass(cls) -> None:
+        """Set up a minimal TransIP client and RSA private key."""
+        cls.client = TransIP(access_token='ACCESS_TOKEN')
+        cls.privkey: str = (  # type: ignore
+            "-----BEGIN RSA PRIVATE KEY-----\n"
+            "MIIEpAIBAAKCAQEAsUSEHsMuB380OUZQWDyyND4q8lEuJAgNnMkO8s5NGwzP8XSi\n"
+            "2DdFglLGLe9kjpADs3XqZFsk8ZFFn7x0idFydGyh9tbJ2WkR9E+kNUJV5iQDzPOB\n"
+            "wvyygEREqnl/o1h3c1q8tD2HZKBcjChn9JbMzdWwAaIs3ppcGWrEI0jZFFfSAyIZ\n"
+            "GkC3k3umOykWIKflQcT/soAfdqW+2P9/KD/wb3AZCer2i6B2hiITiDbHh5q84Hgk\n"
+            "D/Zg1M4yrYDyxDeGkAJHkGKNaE0tgUPoz3XTGP7uFYIx00qJyhmnzQcyV/Xcw3ZQ\n"
+            "7DFUj1HQ5wG/kEF9a4F1+AAiO5C5QbGTFYSwBwIDAQABAoIBABbtIZlI7P8TOJHf\n"
+            "wixnTTTshWlpjmoikIAikMheXiKNeadkylrkaxz7z53JRFwbzB69tV7dWt3TSAns\n"
+            "ubXJXOAp3JisFtcDe8r5MeeheLKXHda396RcQknMioTxycw6eNh2d8ln28br5oxJ\n"
+            "/YfoqPxGEsljTCJOHHM9F7johwrWSQ6f+gmiOkABvIHKgTBLa++v0D+vNrUjM6rx\n"
+            "IE+dBrx8yIgkF4qSg4Dqnr7D0KqCZUGLZ/3K8ShQUtiQYzyHIWKUId3NUecIQcrT\n"
+            "2Ri2TITKuER0fa7Mr+3LMSh/3+HtP2AoM34ouxr9H98LFz/UXxuFIRFTx7UVRt4N\n"
+            "3zqhsEECgYEA+TnXanBJmFz3sNYtlQixtKrh496GB0NheuK4xeNEj9/3gJ6J/rtL\n"
+            "ZHI7VH8r6aqoqw7sO/WJdxkwZTBOz2fe1QJ5BN0HBI5S6jIBQv9Nfqar0TDvNLB+\n"
+            "pH6eYJZ/IEFIMObv9YmsPohXpGeXynecrpl8SazEIWLb8IzgLY0HpokCgYEAthX5\n"
+            "1th4Re0P9rzXp21bbEwcvOKcg5dcpSaTtA1eQEILl6qqT3FP7w8/Ed7NRRY9Gcs+\n"
+            "inAc96YRNAgIGgfT3R1BmxOMWfdFBT1zlCheS6egKKLzVPzKPiMoMP4zu4hy6uH5\n"
+            "YVqpDLu0YQu1J2L0VYdZ9xAC0//Rx8KRcs6m/g8CgYEA41VDja+HMhf7R67WPU+E\n"
+            "6YvGKRjdoNpxnKoaaUd5TtO46/WxYk5t4t3gCJ9H6wjkecRO8BJ0pdKwNlzuRno0\n"
+            "5JAw26LRt/Iq571dMUO36IMXzuWYDLPBkUJ+LRSaOU3TD+hXkd1W5GNxrmFgMCsT\n"
+            "HKCcooeZD+shPDcEdghipiECgYARBTDbYlSrxKMPX0uRPOmkz+CHz27t5gIk9dws\n"
+            "omtC+ml2/d75mg/surIci4UIhjGj7Zmk+yHaDE3jXTTUqhKlwoxVYJhn+HMdMEdT\n"
+            "fAqEa+DOq5yvPwnwkPy6x6gySWjkh8b10LGonQsZXyzJx7grHoHMVFTPWERVtdw+\n"
+            "rQ5zBQKBgQC0Iwx4eeQYx60OCZpioNEQ3QPaFgqoWYEexmcMlpgQ9ycdnHx3SkE8\n"
+            "SlMokcPIEJDhdF3632kIAHOOJeA4Tmshf+ol/O2U2PDgbJZL6W6FJlT28sZVUU8j\n"
+            "IjFmiAiW6IIEqkJxuR1diAjppEiMmSkjPavo7oQs0TZMMUkli1N9dw==\n"
+            "-----END RSA PRIVATE KEY-----"
+        )
+
+    def setUp(self) -> None:
+        """Setup mocked responses for the '/auth' endpoint."""
+        load_responses_fixtures("auth.json")
 
     def test_base_url(self) -> None:
         """Test the base URL of the API."""
@@ -43,3 +79,19 @@ def test_authorization_header(self) -> None:
         auth_header: str = self.client.headers["Authorization"]
 
         assert auth_header == "Bearer ACCESS_TOKEN"
+
+    @responses.activate
+    def test_private_key_authorization_header(self) -> None:
+        """
+        Test if TransIP instances initialized with a private key, results in
+        the 'Authorization' header containing the access token returned by the
+        mocked response.
+        """
+        client: TransIP = TransIP(login="testuser", private_key=self.privkey)
+        auth_header: str = self.client.headers["Authorization"]
+
+        # Assert a single request is made to the mocked TransIP API
+        self.assertEqual(len(responses.calls), 1)
+        # Assert the 'Authorization' header contains the access token returned
+        # by the mocked response
+        self.assertEqual(auth_header, "Bearer ACCESS_TOKEN")