allow reformatting of raids

subiquity/models/filesystem.py

@@ -994,6 +994,7 @@ class Raid(_Device):
         DeviceAction.FORMAT,
         DeviceAction.REMOVE,
         DeviceAction.DELETE,
+        DeviceAction.REFORMAT,
         ]
 
     @property
@@ -1008,6 +1009,7 @@ class Raid(_Device):
             return _generic_can_EDIT(self)
 
     _can_PARTITION = Disk._can_PARTITION
+    _can_REFORMAT = Disk._can_REFORMAT
     _can_FORMAT = property(
         lambda self: len(self._partitions) == 0 and
         self._constructed_device is None)

subiquity/models/tests/test_filesystem.py

@@ -596,8 +596,31 @@ class TestFilesystemModel(unittest.TestCase):
         self.assertActionNotPossible(raid3, DeviceAction.EDIT)
 
     def test_raid_action_REFORMAT(self):
-        model, raid = make_model_and_raid()
+        model = make_model()
-        self.assertActionNotSupported(raid, DeviceAction.REFORMAT)
+
+        raid1 = make_raid(model)
+        self.assertActionNotPossible(raid1, DeviceAction.REFORMAT)
+        raid1p1 = make_partition(model, raid1)
+        self.assertActionPossible(raid1, DeviceAction.REFORMAT)
+        model.add_volgroup('vg0', {raid1p1})
+        self.assertActionNotPossible(raid1, DeviceAction.REFORMAT)
+
+        raid2 = make_raid(model)
+        raid2.preserve = True
+        self.assertActionNotPossible(raid2, DeviceAction.REFORMAT)
+        raid2p1 = make_partition(model, raid2, preserve=True)
+        self.assertActionPossible(raid2, DeviceAction.REFORMAT)
+        model.add_volgroup('vg1', {raid2p1})
+        self.assertActionNotPossible(raid2, DeviceAction.REFORMAT)
+
+        raid3 = make_raid(model)
+        model.add_volgroup('vg2', {raid3})
+        self.assertActionNotPossible(raid3, DeviceAction.REFORMAT)
+
+        raid4 = make_raid(model)
+        raid4.preserve = True
+        model.add_volgroup('vg2', {raid4})
+        self.assertActionNotPossible(raid4, DeviceAction.REFORMAT)
 
     def test_raid_action_PARTITION(self):
         model, raid = make_model_and_raid()

subiquity/ui/views/filesystem/filesystem.py

@@ -330,6 +330,7 @@ class DeviceList(WidgetWrap):
     _raid_EDIT = _stretchy_shower(RaidStretchy)
     _raid_PARTITION = _disk_PARTITION
     _raid_FORMAT = _disk_FORMAT
+    _raid_REFORMAT = _disk_REFORMAT
     _raid_REMOVE = _disk_REMOVE
     _raid_DELETE = _partition_DELETE