Implement item cachine for 26.3

tests/test_crop_cache.py

@@ -0,0 +1,31 @@
+import unittest
+
+from munch import Munch
+
+from mosfet.info import items
+from mosfet.job import JobStates
+
+
+class TestCropCaching(unittest.TestCase):
+    def test_crop_farm_runs_silent_cache_machine_and_keeps_seeds(self):
+        old_wanted = items.WANTED_ITEMS
+        crop_state = object()
+        cache_state = Munch(silent=False)
+        jobs = JobStates.__new__(JobStates)
+        jobs.gather_crop_states = crop_state
+        jobs.cache_items_states = cache_state
+
+        try:
+            machines = JobStates.farm_crop(jobs)
+            self.assertEqual(machines, [crop_state, cache_state])
+            self.assertTrue(cache_state.silent)
+            self.assertTrue({
+                items.CARROT_ID, items.POTATO_ID,
+                items.WHEAT_SEEDS_ID, items.BEETROOT_SEEDS_ID,
+            }.issubset(items.WANTED_ITEMS))
+        finally:
+            items.WANTED_ITEMS = old_wanted
+
+
+if __name__ == '__main__':
+    unittest.main()