add test for sendgrid api

Author: surajit

requirements.txt

@@ -34,4 +34,4 @@ typing_extensions==4.2.0
 urllib3==1.26.9
 zipp==3.8.0
 sqlalchemy-utils==0.38.2
-
+pytest-asyncio==0.18.3

tests/integrations/test_sendgrid.py

@@ -0,0 +1,42 @@
+import json
+from unittest import mock
+
+import pytest
+
+from email_api.email import send_email
+from email_api.email import UnauthorizedException
+from email_api.email import BadRequestException
+from settings import TEST_DATA_DIR
+
+
+def read_json(filename):
+    with open(TEST_DATA_DIR.joinpath(filename)) as resp_file:
+        return json.load(resp_file)
+
+
+@mock.patch("email_api.email.SendGridAPIClient.send")
+@pytest.mark.asyncio
+async def test_send_email(mock_email_client):
+    mock_email_client.return_value = {"status_code": 202}
+    response = await send_email(data=read_json("email_data.json"))
+    assert response["status_code"] == 202
+
+
+@mock.patch("email_api.email.SendGridAPIClient.send")
+@pytest.mark.asyncio
+async def test_send_email_raises_unauthorized_exception(mock_email_client):
+    mock_email_client.side_effect = UnauthorizedException("Invalid api key")
+    with pytest.raises(UnauthorizedException) as exc:
+        await send_email(data=read_json("email_data.json"))
+    assert isinstance(exc.value, UnauthorizedException)
+    assert exc.value.args[0] == "Invalid api key"
+
+
+@mock.patch("email_api.email.SendGridAPIClient.send")
+@pytest.mark.asyncio
+async def test_send_email_raises_bad_request_exception(mock_email_client):
+    mock_email_client.side_effect = BadRequestException("Bad request")
+    with pytest.raises(BadRequestException) as exc:
+        await send_email(data=read_json("email_data.json"))
+    assert isinstance(exc.value, BadRequestException)
+    assert exc.value.args[0] == "Bad request"