feat: Add tests for filter presets save/load/delete behavior in SearchFilterWidget

tests/test_filter_presets.py

@@ -0,0 +1,112 @@
+"""Tests for filter presets save/load/delete behavior in SearchFilterWidget."""
+
+import tkinter as tk
+import pytest
+from unittest.mock import MagicMock
+
+from src.search_filter_ui import SearchFilterWidget
+from src.search_filter import DataFilter
+
+
+@pytest.fixture
+def tk_root():
+    root = tk.Tk()
+    root.withdraw()
+    yield root
+    root.destroy()
+
+
+@pytest.fixture
+def widget(tk_root):
+    # Minimal managers
+    med_mgr = MagicMock()
+    med_mgr.get_medicine_keys.return_value = ["med1", "med2"]
+    m1 = MagicMock(); m1.display_name = "Medicine 1"
+    m2 = MagicMock(); m2.display_name = "Medicine 2"
+    med_mgr.get_medicine.side_effect = lambda k: {"med1": m1, "med2": m2}.get(k)
+
+    path_mgr = MagicMock()
+    path_mgr.get_pathology_keys.return_value = ["path1", "path2"]
+    p1 = MagicMock(); p1.display_name = "Pathology 1"
+    p2 = MagicMock(); p2.display_name = "Pathology 2"
+    path_mgr.get_pathology.side_effect = lambda k: {"path1": p1, "path2": p2}.get(k)
+
+    data_filter = MagicMock(spec=DataFilter)
+    update_cb = MagicMock()
+
+    w = SearchFilterWidget(
+        parent=tk_root,
+        data_filter=data_filter,
+        update_callback=update_cb,
+        medicine_manager=med_mgr,
+        pathology_manager=path_mgr,
+    )
+    return w, data_filter, update_cb
+
+
+def test_save_preset_creates_when_new(widget, monkeypatch):
+    w, data_filter, _update_cb = widget
+
+    # DataFilter summary to save
+    summary = {"has_filters": True, "search_term": "abc", "filters": {}}
+    data_filter.get_filter_summary.return_value = summary
+
+    # Pretend no existing presets
+    monkeypatch.setattr("src.search_filter_ui.get_pref", lambda k, d=None: {})
+
+    saved = {}
+    def fake_set_pref(key, value):
+        saved[key] = value
+    monkeypatch.setattr("src.search_filter_ui.set_pref", fake_set_pref)
+
+    called = {"saved": False}
+    def fake_save_preferences():
+        called["saved"] = True
+    monkeypatch.setattr("src.search_filter_ui.save_preferences", fake_save_preferences)
+
+    # Bypass dialog
+    monkeypatch.setattr(SearchFilterWidget, "_ask_preset_name", lambda self, initial="": "TestPreset")
+
+    w._save_preset()
+
+    assert "filter_presets" in saved
+    assert saved["filter_presets"]["TestPreset"] == summary
+    assert called["saved"] is True
+
+
+def test_load_preset_applies_filters(widget, monkeypatch):
+    w, data_filter, update_cb = widget
+
+    # Craft a saved preset summary
+    summary = {
+        "has_filters": True,
+        "search_term": "headache",
+        "filters": {
+            "date_range": {"start": "2024-01-01", "end": "2024-12-31"},
+            "medicines": {"taken": ["med1"], "not_taken": ["med2"]},
+            "pathologies": {"path1": "2-8"}
+        },
+    }
+
+    # Provide get_pref to return our preset
+    monkeypatch.setattr(
+        "src.search_filter_ui.get_pref",
+        lambda k, d=None: {"filter_presets": {"MyPreset": summary}}.get(k, d),
+    )
+
+    # Select the preset and load
+    w.preset_var.set("MyPreset")
+
+    # Suppress any warnings
+    monkeypatch.setattr("src.search_filter_ui.messagebox.showwarning", lambda *a, **k: None)
+
+    w._load_preset()
+
+    # Verify DataFilter received expected calls
+    data_filter.clear_all_filters.assert_called()
+    data_filter.set_search_term.assert_called_with("headache")
+    data_filter.set_date_range_filter.assert_called_with("2024-01-01", "2024-12-31")
+    data_filter.set_medicine_filter.assert_any_call("med1", True)
+    data_filter.set_medicine_filter.assert_any_call("med2", False)
+    data_filter.set_pathology_range_filter.assert_any_call("path1", 2, 8)
+    update_cb.assert_called()