test: imporve (#25461)

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api/tests/unit_tests/libs/test_sendgrid_client.py

@@ -0,0 +1,53 @@
+from unittest.mock import MagicMock, patch
+
+import pytest
+from python_http_client.exceptions import UnauthorizedError
+
+from libs.sendgrid import SendGridClient
+
+
+def _mail(to: str = "user@example.com") -> dict:
+    return {"to": to, "subject": "Hi", "html": "<b>Hi</b>"}
+
+
+@patch("libs.sendgrid.sendgrid.SendGridAPIClient")
+def test_sendgrid_success(mock_client_cls: MagicMock):
+    mock_client = MagicMock()
+    mock_client_cls.return_value = mock_client
+    # nested attribute access: client.mail.send.post
+    mock_client.client.mail.send.post.return_value = MagicMock(status_code=202, body=b"", headers={})
+
+    sg = SendGridClient(sendgrid_api_key="key", _from="noreply@example.com")
+    sg.send(_mail())
+
+    mock_client_cls.assert_called_once()
+    mock_client.client.mail.send.post.assert_called_once()
+
+
+@patch("libs.sendgrid.sendgrid.SendGridAPIClient")
+def test_sendgrid_missing_to_raises(mock_client_cls: MagicMock):
+    sg = SendGridClient(sendgrid_api_key="key", _from="noreply@example.com")
+    with pytest.raises(ValueError):
+        sg.send(_mail(to=""))
+
+
+@patch("libs.sendgrid.sendgrid.SendGridAPIClient")
+def test_sendgrid_auth_errors_reraise(mock_client_cls: MagicMock):
+    mock_client = MagicMock()
+    mock_client_cls.return_value = mock_client
+    mock_client.client.mail.send.post.side_effect = UnauthorizedError(401, "Unauthorized", b"{}", {})
+
+    sg = SendGridClient(sendgrid_api_key="key", _from="noreply@example.com")
+    with pytest.raises(UnauthorizedError):
+        sg.send(_mail())
+
+
+@patch("libs.sendgrid.sendgrid.SendGridAPIClient")
+def test_sendgrid_timeout_reraise(mock_client_cls: MagicMock):
+    mock_client = MagicMock()
+    mock_client_cls.return_value = mock_client
+    mock_client.client.mail.send.post.side_effect = TimeoutError("timeout")
+
+    sg = SendGridClient(sendgrid_api_key="key", _from="noreply@example.com")
+    with pytest.raises(TimeoutError):
+        sg.send(_mail())