pytest: basic cache recovery test

Signed-off-by: Adam Rutkowski <adam.j.rutkowski@intel.com>

tests/functional/pyocf/types/volume.py

@@ -104,6 +104,11 @@ class Volume(Structure):
         self.reset_stats()
         self.opened = False
 
+    def get_copy(self):
+        new_volume = Volume(self.size)
+        memmove(new_volume.data, self.data, self.size)
+        return new_volume
+
     @classmethod
     def get_props(cls):
         if not cls.props:

tests/functional/tests/basic/test_pyocf.py

@@ -72,3 +72,15 @@ def test_load_cache(pyocf_ctx):
     cache.stop()
 
     cache = Cache.load_from_device(cache_device)
+
+
+def test_load_cache_recovery(pyocf_ctx):
+    cache_device = Volume(S.from_MiB(30))
+
+    cache = Cache.start_on_device(cache_device)
+
+    device_copy = cache_device.get_copy()
+
+    cache.stop()
+
+    cache = Cache.load_from_device(device_copy)