From e47d7190d51d34cd8026a396b3fbc63305e9909e Mon Sep 17 00:00:00 2001
From: AndyMik90 <andre@mikalsenutvikling.no>
Date: Sat, 14 Feb 2026 09:15:24 +0100
Subject: [PATCH] auto-claude: subtask-8-8 - Create tests/test_fallback.py:
 Test RuleBasedExtra

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 tests/test_fallback.py | 89 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 tests/test_fallback.py

diff --git a/tests/test_fallback.py b/tests/test_fallback.py
new file mode 100644
index 00000000..7bb97b31
--- /dev/null
+++ b/tests/test_fallback.py
@@ -0,0 +1,89 @@
+"""Tests for RuleBasedExtractor fallback pattern matching."""
+
+import pytest
+
+from observer.fallback import RuleBasedExtractor
+from observer.models import ObservationCategory, SessionEvent
+
+
+def _event(text: str, event_type: str = "tool_result", source: str = "test") -> SessionEvent:
+    """Helper to create a SessionEvent with output text."""
+    return SessionEvent(event_type=event_type, data={"output": text}, source=source)
+
+
+@pytest.fixture
+def extractor():
+    return RuleBasedExtractor()
+
+
+def _extract(extractor, text, event_type="tool_result"):
+    events = [_event(text, event_type=event_type)]
+    return extractor.extract(events, spec_id="001", project_id="proj", session_num=1)
+
+
+class TestErrorResolution:
+    def test_module_not_found(self, extractor):
+        obs = _extract(extractor, "ModuleNotFoundError: No module named 'foo'")
+        errors = [o for o in obs if o.category == ObservationCategory.ERROR_RESOLUTION]
+        assert len(errors) >= 1
+        assert "ModuleNotFoundError" in errors[0].content
+
+    def test_import_error(self, extractor):
+        obs = _extract(extractor, "ImportError: cannot import name 'bar' from 'baz'")
+        errors = [o for o in obs if o.category == ObservationCategory.ERROR_RESOLUTION]
+        assert len(errors) >= 1
+        assert "ImportError" in errors[0].content
+
+
+class TestTestingInsight:
+    def test_pytest_output(self, extractor):
+        obs = _extract(extractor, "5 passed, 2 failed")
+        insights = [o for o in obs if o.category == ObservationCategory.TESTING_INSIGHT]
+        assert len(insights) == 1
+        assert "passed" in insights[0].content
+        assert "failed" in insights[0].content
+
+
+class TestBuildSystem:
+    def test_ts_error_2339(self, extractor):
+        obs = _extract(extractor, "error TS2339: Property 'x' does not exist on type 'Y'.")
+        builds = [o for o in obs if o.category == ObservationCategory.BUILD_SYSTEM]
+        assert len(builds) >= 1
+        assert "TS2339" in builds[0].content
+
+    def test_ts_error_2345(self, extractor):
+        obs = _extract(extractor, "error TS2345: Argument of type 'A' is not assignable.")
+        builds = [o for o in obs if o.category == ObservationCategory.BUILD_SYSTEM]
+        assert len(builds) >= 1
+        assert "TS2345" in builds[0].content
+
+
+class TestFileRelationship:
+    def test_extracts_file_paths_from_tool_result(self, extractor):
+        obs = _extract(extractor, "Modified ./src/components/App.tsx and ./utils/helpers.ts")
+        files = [o for o in obs if o.category == ObservationCategory.FILE_RELATIONSHIP]
+        assert len(files) == 1
+        assert "App.tsx" in files[0].content
+
+    def test_no_file_paths_for_non_tool_result(self, extractor):
+        obs = _extract(extractor, "Modified ./src/App.tsx", event_type="assistant_message")
+        files = [o for o in obs if o.category == ObservationCategory.FILE_RELATIONSHIP]
+        assert len(files) == 0
+
+
+class TestNoPatterns:
+    def test_empty_for_plain_text(self, extractor):
+        obs = _extract(extractor, "Everything looks good, no issues found.")
+        assert obs == []
+
+    def test_empty_for_no_events(self, extractor):
+        obs = extractor.extract([], spec_id="001", project_id="proj", session_num=1)
+        assert obs == []
+
+
+class TestConfigurationGotcha:
+    def test_env_var_error(self, extractor):
+        obs = _extract(extractor, "DATABASE_URL=postgres://localhost:5432/mydb")
+        configs = [o for o in obs if o.category == ObservationCategory.CONFIGURATION_GOTCHA]
+        assert len(configs) >= 1
+        assert any("DATABASE_URL" in o.content for o in configs)