feat: require approval at current PR head for merge (#471)
Add merge_approval_gate assessment so gitea_merge_pr fails closed when visible APPROVED reviews do not pin the live head SHA. Expose approval_at_current_head and stale_approval_block_reason in review feedback. Document re-review requirement in canonical merge workflow. Closes #471. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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@@ -115,6 +115,22 @@ class TestPRReviewFeedbackDiscovery(unittest.TestCase):
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result["latest_review_state_by_reviewer"], {"reviewer1": "APPROVED"})
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self.assertFalse(result["has_blocking_change_requests"])
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self.assertTrue(result["approval_visible"])
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self.assertTrue(result["approval_at_current_head"])
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@patch("mcp_server.api_request")
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@patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
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@patch("mcp_server.get_profile")
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def test_stale_approval_not_at_current_head(self, mock_get_profile, _auth, mock_api):
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mock_get_profile.return_value = self._profile()
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mock_api.side_effect = [
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_pr_details(head_sha="newhead3"),
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[_review("reviewer1", "APPROVED", commit_id="oldhead1")],
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]
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result = gitea_get_pr_review_feedback(pr_number=5, remote="prgs")
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self.assertTrue(result["approval_visible"])
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self.assertFalse(result["approval_at_current_head"])
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self.assertEqual(result["latest_approved_head_sha"], "oldhead1")
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self.assertIn("stale approval", result["stale_approval_block_reason"])
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@patch("mcp_server.api_request")
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@patch("mcp_server.get_auth_header", return_value=FAKE_AUTH)
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