chore: import upstream snapshot with attribution

tests/api/answer/services/compression/test_threshold_checker.py

@@ -0,0 +1,46 @@
+from unittest.mock import patch
+
+import pytest
+
+
+@pytest.mark.unit
+class TestCompressionThresholdChecker:
+
+    def _make_checker(self, pct=0.7):
+        from application.api.answer.services.compression.threshold_checker import (
+            CompressionThresholdChecker,
+        )
+
+        return CompressionThresholdChecker(threshold_percentage=pct)
+
+    @patch(
+        "application.api.answer.services.compression.threshold_checker.get_token_limit",
+        return_value=8000,
+    )
+    @patch(
+        "application.api.answer.services.compression.threshold_checker.TokenCounter.count_message_tokens",
+        return_value=6000,
+    )
+    def test_check_message_tokens_above_threshold(self, mock_count, mock_limit):
+        checker = self._make_checker(0.7)
+        assert checker.check_message_tokens([{"role": "user"}], "gpt-4") is True
+
+    @patch(
+        "application.api.answer.services.compression.threshold_checker.get_token_limit",
+        return_value=8000,
+    )
+    @patch(
+        "application.api.answer.services.compression.threshold_checker.TokenCounter.count_message_tokens",
+        return_value=1000,
+    )
+    def test_check_message_tokens_below_threshold(self, mock_count, mock_limit):
+        checker = self._make_checker(0.7)
+        assert checker.check_message_tokens([{"role": "user"}], "gpt-4") is False
+
+    @patch(
+        "application.api.answer.services.compression.threshold_checker.TokenCounter.count_message_tokens",
+        side_effect=Exception("Token error"),
+    )
+    def test_check_message_tokens_exception_returns_false(self, mock_count):
+        checker = self._make_checker(0.7)
+        assert checker.check_message_tokens([], "gpt-4") is False