chore: import upstream snapshot with attribution

tests/defaults/test_defaults.py

@@ -0,0 +1,92 @@
+"""Tests for defaults module."""
+
+from pathlib import Path
+from unittest.mock import patch
+
+
+class TestDefaultsDir:
+    def test_defaults_dir_exists(self):
+        from local_deep_research.defaults import DEFAULTS_DIR
+
+        assert isinstance(DEFAULTS_DIR, Path)
+        assert DEFAULTS_DIR.exists()
+
+
+class TestDefaultFiles:
+    def test_default_files_dict(self):
+        from local_deep_research.defaults import DEFAULT_FILES
+
+        assert isinstance(DEFAULT_FILES, dict)
+        assert len(DEFAULT_FILES) > 0
+
+    def test_main_toml_in_defaults(self):
+        from local_deep_research.defaults import DEFAULT_FILES
+
+        assert "main.toml" in DEFAULT_FILES
+
+    def test_search_engines_toml_in_defaults(self):
+        from local_deep_research.defaults import DEFAULT_FILES
+
+        assert "search_engines.toml" in DEFAULT_FILES
+
+
+class TestGetDefaultFilePath:
+    def test_returns_path_for_known_file(self):
+        from local_deep_research.defaults import get_default_file_path
+
+        path = get_default_file_path("main.toml")
+        assert path is not None
+        assert isinstance(path, Path)
+
+    def test_returns_none_for_unknown_file(self):
+        from local_deep_research.defaults import get_default_file_path
+
+        path = get_default_file_path("nonexistent.toml")
+        assert path is None
+
+
+class TestListDefaultFiles:
+    def test_returns_list(self):
+        from local_deep_research.defaults import list_default_files
+
+        files = list_default_files()
+        assert isinstance(files, list)
+        assert len(files) > 0
+
+    def test_contains_expected_files(self):
+        from local_deep_research.defaults import list_default_files
+
+        files = list_default_files()
+        assert "main.toml" in files
+
+
+class TestEnsureDefaultsExist:
+    def test_returns_boolean(self):
+        from local_deep_research.defaults import ensure_defaults_exist
+
+        result = ensure_defaults_exist()
+        assert isinstance(result, bool)
+
+    def test_returns_true_when_all_exist(self):
+        from local_deep_research.defaults import ensure_defaults_exist
+
+        # In a properly installed package, all defaults should exist
+        result = ensure_defaults_exist()
+        # Don't assert True because some files may be missing in test env
+        assert result is True or result is False
+
+    def test_returns_false_when_files_missing(self):
+        """Cover the 'return False' branch when files are missing."""
+        from local_deep_research.defaults import (
+            DEFAULTS_DIR,
+            ensure_defaults_exist,
+        )
+
+        fake_files = {
+            "nonexistent_file.toml": DEFAULTS_DIR / "does_not_exist.toml",
+        }
+        with patch.dict(
+            "local_deep_research.defaults.DEFAULT_FILES", fake_files, clear=True
+        ):
+            result = ensure_defaults_exist()
+            assert result is False