fix: Solve delete GitHub integration issue (#4622)

api/integrations/github/client.py

@@ -116,9 +116,20 @@ def post_comment_to_github(
 def delete_github_installation(installation_id: str) -> requests.Response:
     url = f"{GITHUB_API_URL}app/installations/{installation_id}"
     headers = build_request_headers(installation_id, use_jwt=True)
-    response = requests.delete(url, headers=headers, timeout=GITHUB_API_CALLS_TIMEOUT)
-    response.raise_for_status()
-    return response
+    try:
+        response = requests.delete(
+            url, headers=headers, timeout=GITHUB_API_CALLS_TIMEOUT
+        )
+        response.raise_for_status()
+        return response
+    except HTTPError:
+        response_content = response.content.decode("utf-8")
+        error_data = json.loads(response_content)
+        if error_data.get("message") == "Not Found" and response.status_code == 404:
+            logger.info(
+                f"The GitHub application with the installation ID: {installation_id} was not found."
+            )
+            return response
 
 
 def fetch_search_github_resource(

api/tests/unit/integrations/github/test_unit_github_views.py

@@ -189,7 +189,7 @@ def test_delete_github_configuration(
 
 
 @responses.activate
-def test_cannot_delete_github_configuration_when_delete_github_installation_response_was_404(
+def test_can_delete_github_configuration_when_delete_github_installation_response_was_404(
     admin_client_new: APIClient,
     organisation: Organisation,
     github_configuration: GithubConfiguration,
@@ -213,18 +213,14 @@ def test_cannot_delete_github_configuration_when_delete_github_installation_resp
         method="DELETE",
         url=f"{GITHUB_API_URL}app/installations/{github_configuration.installation_id}",
         status=404,
-        json={"message": "not found"},
+        json={"message": "Not Found", "status": "404"},
     )
 
     # When
     response = admin_client_new.delete(url)
     # Then
-    assert response.status_code == status.HTTP_502_BAD_GATEWAY
-    assert (
-        response.json()["detail"]
-        == "Failed to delete GitHub Installation. Error: 404 Client Error: Not Found for url: https://api.github.com/app/installations/1234567"  # noqa: E501
-    )
-    assert GithubConfiguration.objects.filter(id=github_configuration.id).exists()
+    assert response.status_code == status.HTTP_204_NO_CONTENT
+    assert not GithubConfiguration.objects.filter(id=github_configuration.id).exists()
 
 
 def test_get_github_repository(