穩定成長分析共享快取

tests/test_cache_manager.py

@@ -120,6 +120,43 @@ def test_clear_sales_cache_removes_shared_page_cache_files(tmp_path, monkeypatch
     assert not cache_file.exists()
 
 
+def test_growth_cache_shared_file_roundtrip(tmp_path, monkeypatch):
+    from services import cache_service
+
+    shared_cache = tmp_path / "growth_analysis_cache.pkl"
+    monkeypatch.setattr(cache_service, "_GROWTH_SHARED_CACHE_FILE", shared_cache)
+
+    cache_service.clear_growth_cache()
+    cache_service.set_growth_cache(
+        {"labels": ["2026-05"], "revenue": [1000]},
+        {"ytd_revenue": 1000},
+        source_fingerprint=("2026-05-17", 10),
+    )
+
+    cache_service._GROWTH_ANALYSIS_CACHE = {
+        "chart_data": None,
+        "kpi": None,
+        "timestamp": None,
+        "source_fingerprint": None,
+    }
+
+    assert cache_service.is_growth_cache_valid(("2026-05-17", 10))
+    assert cache_service.get_growth_cache()["chart_data"]["revenue"] == [1000]
+    assert shared_cache.exists()
+
+
+def test_clear_growth_cache_removes_shared_file(tmp_path, monkeypatch):
+    from services import cache_service
+
+    shared_cache = tmp_path / "growth_analysis_cache.pkl"
+    shared_cache.write_bytes(b"stale")
+    monkeypatch.setattr(cache_service, "_GROWTH_SHARED_CACHE_FILE", shared_cache)
+
+    cache_service.clear_growth_cache()
+
+    assert not shared_cache.exists()
+
+
 def test_daily_sales_shared_view_cache_roundtrip(tmp_path, monkeypatch):
     from routes import daily_sales_routes