test(seer): Add tests for set_default_project_auto_open_prs

Cover all org-default-to-project mapping cases: Seer agent with
default and custom stopping points, auto_open_prs forcing open_pr,
external agents (Cursor/Claude) with handoff config, missing
integration ID edge case, API error handling, and dual-write
feature flag gating.

Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>
Made-with: Cursor

Author: srest2021

tests/sentry/seer/similarity/test_utils.py

@@ -15,6 +15,7 @@
     filter_null_from_string,
     get_stacktrace_string,
     get_token_count,
+    set_default_project_auto_open_prs,
     stacktrace_exceeds_limits,
 )
 from sentry.services.eventstore.models import Event
@@ -1220,3 +1221,140 @@ def test_generates_stacktrace_string_from_variants(self) -> None:
         assert token_count > 0
         # Verify we get the expected token count for this specific stacktrace
         assert token_count == 33
+
+
+class TestSetDefaultProjectAutoOpenPrs(TestCase):
+    """Tests for set_default_project_auto_open_prs which wires org-level Seer
+    defaults (stopping point, coding agent, auto_open_prs) into project-level
+    preferences at project creation time.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.project = self.create_project(organization=self.organization)
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=False)
+    def test_skips_when_tier_not_enabled(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        set_default_project_auto_open_prs(self.organization, self.project)
+        mock_set_pref.assert_not_called()
+        mock_dual_write.assert_not_called()
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_seer_agent_default_stopping_point(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        """Seer agent, no auto_open_prs, default stopping point (code_changes)."""
+        set_default_project_auto_open_prs(self.organization, self.project)
+
+        pref = mock_set_pref.call_args[0][0]
+        assert pref.automated_run_stopping_point == "code_changes"
+        assert pref.automation_handoff is None
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_seer_agent_custom_stopping_point(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        """Seer agent, no auto_open_prs, custom stopping point (root_cause)."""
+        self.organization.update_option("sentry:default_stopping_point", "root_cause")
+
+        set_default_project_auto_open_prs(self.organization, self.project)
+
+        pref = mock_set_pref.call_args[0][0]
+        assert pref.automated_run_stopping_point == "root_cause"
+        assert pref.automation_handoff is None
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_seer_agent_with_auto_open_prs(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        """auto_open_prs=True forces stopping point to open_pr regardless of default."""
+        self.organization.update_option("sentry:auto_open_prs", True)
+        self.organization.update_option("sentry:default_stopping_point", "root_cause")
+
+        set_default_project_auto_open_prs(self.organization, self.project)
+
+        pref = mock_set_pref.call_args[0][0]
+        assert pref.automated_run_stopping_point == "open_pr"
+        assert pref.automation_handoff is None
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_external_agent_no_auto_open_prs(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        agents = [
+            ("cursor_background_agent", 1234),
+            ("claude_code_agent", 5678),
+        ]
+        for agent, integration_id in agents:
+            with self.subTest(agent=agent):
+                mock_set_pref.reset_mock()
+                self.organization.update_option("sentry:seer_default_coding_agent", agent)
+                self.organization.update_option(
+                    "sentry:seer_default_coding_agent_integration_id", integration_id
+                )
+
+                set_default_project_auto_open_prs(self.organization, self.project)
+
+                pref = mock_set_pref.call_args[0][0]
+                assert pref.automated_run_stopping_point == "code_changes"
+                assert pref.automation_handoff is not None
+                assert pref.automation_handoff.handoff_point == "root_cause"
+                assert pref.automation_handoff.target == agent
+                assert pref.automation_handoff.integration_id == integration_id
+                assert pref.automation_handoff.auto_create_pr is False
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_external_agent_with_auto_open_prs(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        """auto_open_prs=True forces open_pr and sets auto_create_pr on handoff."""
+        self.organization.update_option("sentry:auto_open_prs", True)
+        agents = [
+            ("cursor_background_agent", 1234),
+            ("claude_code_agent", 5678),
+        ]
+        for agent, integration_id in agents:
+            with self.subTest(agent=agent):
+                mock_set_pref.reset_mock()
+                self.organization.update_option("sentry:seer_default_coding_agent", agent)
+                self.organization.update_option(
+                    "sentry:seer_default_coding_agent_integration_id", integration_id
+                )
+
+                set_default_project_auto_open_prs(self.organization, self.project)
+
+                pref = mock_set_pref.call_args[0][0]
+                assert pref.automated_run_stopping_point == "open_pr"
+                assert pref.automation_handoff is not None
+                assert pref.automation_handoff.target == agent
+                assert pref.automation_handoff.integration_id == integration_id
+                assert pref.automation_handoff.auto_create_pr is True
+
+    @patch("sentry.seer.similarity.utils.write_preference_to_sentry_db")
+    @patch("sentry.seer.similarity.utils.set_project_seer_preference")
+    @patch("sentry.seer.similarity.utils.is_seer_seat_based_tier_enabled", return_value=True)
+    def test_external_agent_without_integration_id_skips_handoff(
+        self, mock_tier: MagicMock, mock_set_pref: MagicMock, mock_dual_write: MagicMock
+    ):
+        self.organization.update_option(
+            "sentry:seer_default_coding_agent", "cursor_background_agent"
+        )
+
+        set_default_project_auto_open_prs(self.organization, self.project)
+
+        pref = mock_set_pref.call_args[0][0]
+        assert pref.automation_handoff is None