tests: Adjust tests for new set-env syntax

main_tests.py

@@ -1,8 +1,11 @@
 import asyncio
+import os
+import tempfile
 from asyncio import Semaphore
 from copy import deepcopy
 from datetime import datetime, timedelta, timezone
 from functools import partial
+from io import StringIO
 from unittest.mock import AsyncMock, Mock
 
 import pytest as pytest
@@ -37,6 +40,16 @@
 mock_http_client.delete.return_value = mock_response
 
 
+@pytest.fixture(autouse=True)
+def github_env():
+    """
+    Create a GITHUB_ENV env value to mock the Github actions equivalent.
+    """
+    temp = tempfile.NamedTemporaryFile()
+    os.environ['GITHUB_ENV'] = temp.name
+    yield
+
+
 @pytest.mark.asyncio
 async def test_list_org_package_version():
     await list_org_package_versions(org_name='test', image_name=ImageName('test', 'test'), http_client=mock_http_client)
@@ -540,7 +553,7 @@ def json(self):
 
 
 @pytest.mark.asyncio
-async def test_outputs_are_set(mocker, capsys):
+async def test_outputs_are_set(mocker):
     mock_list_response = Mock()
     mock_list_response.is_error = True
     mock_list_response.status_code = 200
@@ -572,11 +585,12 @@ async def test_outputs_are_set(mocker, capsys):
             'token': 'test',
         }
     )
-    captured = capsys.readouterr()
-    out = captured.out
+    with open(os.environ['GITHUB_ENV']) as f:
+        env_vars = f.readlines()[0]
+
     for i in [
-        '::set-output name=needs-github-assistance::',
-        '::set-output name=deleted::',
-        '::set-output name=failed::',
+        'needs-github-assistance=',
+        'deleted=',
+        'failed=',
     ]:
-        assert i in out
+        assert i in env_vars