Fixed oauth_authorization_uri creation and added a test.

bunq/sdk/http/http_util.py

@@ -2,9 +2,8 @@
 
 
 class HttpUtil:
-    # Query constants.
-    QUERY_FORMAT = "%s=%s"
-    QUERY_DELIMITER = "&"
+    QUERY_FORMAT = '{}={}'
+    QUERY_DELIMITER = '&'
 
     @classmethod
     def create_query_string(cls, all_parameter: Dict[str, str]):

bunq/sdk/model/core/oauth_authorization_uri.py

@@ -11,8 +11,8 @@
 
 class OauthAuthorizationUri(BunqModel):
     # Auth constants.
-    AUTH_URI_FORMAT_SANDBOX = "https://oauth.sandbox.bunq.com/auth?%s"
-    AUTH_URI_FORMAT_PRODUCTION = "https://oauth.bunq.com/auth?%s"
+    AUTH_URI_FORMAT_SANDBOX = "https://oauth.sandbox.bunq.com/auth?{}"
+    AUTH_URI_FORMAT_PRODUCTION = "https://oauth.bunq.com/auth?{}"
 
     # Field constants
     FIELD_RESPONSE_TYPE = "response_type"
@@ -38,17 +38,22 @@ def create(cls,
                state: str = None) -> OauthAuthorizationUri:
         all_request_parameter = {
             cls.FIELD_REDIRECT_URI: redirect_uri,
-            cls.FIELD_RESPONSE_TYPE: response_type.value,
-            cls.FIELD_CLIENT_ID: client.client_id
+            cls.FIELD_RESPONSE_TYPE: response_type.name.lower()
         }
 
+        if client.client_id is not None:
+            all_request_parameter[cls.FIELD_CLIENT_ID] = client.client_id
+
         if state is not None:
             all_request_parameter[cls.FIELD_STATE] = state
 
         return OauthAuthorizationUri(
             cls.determine_auth_uri_format().format(HttpUtil.create_query_string(all_request_parameter))
         )
 
+    def get_authorization_uri(self) -> str:
+        return self._authorization_uri
+
     def is_all_field_none(self) -> bool:
         if self._authorization_uri is None:
             return True

tests/model/core/test_oauth_authorization_uri.py

@@ -0,0 +1,26 @@
+from bunq.sdk.context.bunq_context import BunqContext
+from bunq.sdk.model.core.oauth_authorization_uri import OauthAuthorizationUri
+from bunq.sdk.model.core.oauth_response_type import OauthResponseType
+from bunq.sdk.model.generated.endpoint import OauthClient
+from tests.bunq_test import BunqSdkTestCase
+
+
+class TestOauthAuthorizationUri(BunqSdkTestCase):
+    _TEST_EXPECT_URI = 'https://oauth.sandbox.bunq.com/auth?redirect_uri=redirecturi&response_type=code&state=state'
+    _TEST_REDIRECT_URI = 'redirecturi'
+    _TEST_STATUS = 'status'
+    _TEST_STATE = 'state'
+
+    @classmethod
+    def setUpClass(cls) -> None:
+        BunqContext.load_api_context(cls._get_api_context())
+
+    def test_oauth_authorization_uri_create(self) -> None:
+        uri = OauthAuthorizationUri.create(
+            OauthResponseType(OauthResponseType.CODE),
+            self._TEST_REDIRECT_URI,
+            OauthClient(self._TEST_STATUS),
+            self._TEST_STATE
+        ).get_authorization_uri()
+
+        self.assertEqual(self._TEST_EXPECT_URI, uri)