Batch crop farming and stop on unreachable barrels

tests/test_crop_batch.py

@@ -0,0 +1,35 @@
+import unittest
+from munch import Munch
+
+from mosfet.info import blocks
+from mosfet.jobs.gather_crop import GatherCropStates
+
+
+class CropBatchTests(unittest.TestCase):
+    def test_gather_crop_finishes_after_sixteen_successful_replants(self):
+        unripe_wheat = blocks.MCD_BLOCKS['wheat']['minStateId']
+        mature_wheat = blocks.MATURE_WHEAT_ID
+        self.assertNotEqual(unripe_wheat, mature_wheat)
+
+        class FakeWorld:
+            @staticmethod
+            def block_at(*_position):
+                return unripe_wheat
+
+        state = GatherCropStates(Munch(world=FakeWorld()))
+        state.crop = (1, 64, 1)
+        state.type_id = mature_wheat
+
+        for completed in range(1, state.CROPS_PER_BATCH):
+            state.wait_place()
+            self.assertEqual(state.completed_crops, completed)
+            self.assertIs(state.state.__func__, state.find_new_crop.__func__)
+            state.state = state.wait_place
+
+        state.wait_place()
+        self.assertEqual(state.completed_crops, 0)
+        self.assertIs(state.state.__func__, state.cleanup.__func__)
+
+
+if __name__ == '__main__':
+    unittest.main()