unittest: add tests, filesystemmodel, blockdev

- add blockdev tests on available_partitions
- fix type issue in Disk.partition OrderedDict keys, always use integers
- Add __repr__ for Disk related Actions
- Fix issue with available partition logic, ensure we and them together
- Filter out 'leave unformatted' fstype, set to None as needed.
- Whitespace cleanup in unittests
- add fsm test on get_partitions

Signed-off-by: Ryan Harper <ryan.harper@canonical.com>

subiquity/models/actions.py

@@ -135,6 +135,9 @@ class DiskAction():
             action.update({'wipe': self._wipe})
         return action
 
+    def __repr__(self):
+        return str(self.get())
+
     def dump(self):
         return yaml.dump(self.get(), default_flow_style=False)
 

subiquity/models/blockdev.py

@@ -119,7 +119,7 @@ class Disk():
            'size': self.size,
            'partitions': self.partitions
         }
-        return yaml.dump(o, default_flow_format=False)
+        return yaml.dump(o, default_flow_style=False)
 
     @property
     def devpath(self):
@@ -251,13 +251,13 @@ class Blockdev():
 
     @property
     def available_partitions(self):
-        ''' return list of non-zero sized partitions
+        ''' return list of non-zero sized partitions that are 
-            defined but not mounted or formatted or used in
+            defined but not mounted, not formatted, and not used in
             raid, lvm, bcache'''
         return [part.devpath for (num, part) in self.partitions.items()
                 if part.size > 0 and
                    part.flags not in ['raid', 'lvm', 'bcache'] and
-                   (part.devpath not in self._mounts.keys() or
+                   (part.devpath not in self._mounts.keys() and 
                     part.devpath not in self._filesystems.keys())]
 
     @property
@@ -298,6 +298,9 @@ class Blockdev():
             raise Exception('Not enough space (requested:{} free:{}'.format(
                             size, self.freespace))
 
+        # ensure we always use integers for partitions
+        partnum = int(partnum)
+
         if len(self.disk.partitions) == 0:
             offset = FIRST_PARTITION_OFFSET
         else:
@@ -321,7 +324,7 @@ class Blockdev():
         partpath = "{}{}".format(self.disk.devpath, partnum)
 
         # record filesystem formating
-        if fstype:
+        if fstype and fstype not in ['leave unformatted']:
             fs_action = FormatAction(part_action, fstype)
             log.debug('Adding filesystem on {}'.format(partpath))
             log.debug('FormatAction:\n{}'.format(fs_action.get()))

subiquity/models/filesystem.py

@@ -314,7 +314,7 @@ class FilesystemModel(ModelPolicy):
         log.debug('probe_storage: get_partitions()')
         partitions = []
         for dev in self.devices.values():
-            partnames = [part.path for (num, part) in
+            partnames = [part.devpath for (num, part) in
                          dev.disk.partitions.items()]
             partitions += partnames
 

subiquity/tests/test_models_filesystems.py

@@ -122,6 +122,27 @@ class TestFilesystemModel(testtools.TestCase):
         self.fsm.add_device(devname, disk)
         self.assertTrue(devname in self.fsm.devices)
 
+    def test_filesystemmodel_get_partitions(self):
+        self.fsm.probe_storage()
+
+        # no partitions
+        partitions = self.fsm.get_partitions()
+        self.assertEqual(len(partitions), 0)
+
+        # add one to a random disk
+        diskname = random.choice(list(self.fsm.info.keys()))
+        disk = self.fsm.get_disk(diskname)
+        disk.add_partition(1, disk.freespace, None, None, flag='raid')
+
+        # we added one, we should get one
+        partitions = self.fsm.get_partitions()
+        self.assertEqual(len(partitions), 1)
+
+        # it should have the same base device name
+        print(partitions, diskname)
+        self.assertTrue(partitions[0].startswith(diskname))
+
+
 class TestBlockdev(testtools.TestCase):
     def setUp(self):
         super(TestBlockdev, self).setUp()
@@ -229,6 +250,23 @@ class TestBlockdev(testtools.TestCase):
         part2 = self.bd.get_partition(partpath)
         self.assertEqual(new_part, part2)
 
+    def test_blockdev_get_partition_with_string(self):
+        ''' attempt to add a partition with number as a string type '''
+        partnum = '1'
+        self.add_partition(partnum=partnum)
+
+        # format the partpath with devpath and partnum
+        partpath='{}{}'.format(self.devpath, partnum)
+
+        # we shouldn't be able to get it via a string index
+        self.assertRaises(KeyError, lambda x: self.bd.partitions[x], partnum)
+
+        # check that we did create the partition and store it
+        # with an integer as the key in the partitions dictionary
+        new_part = self.bd.partitions[int(partnum)]
+        part2 = self.bd.get_partition(partpath)
+        self.assertEqual(new_part, part2)
+
     def test_blockdev_get_actions(self):
         self.add_partition()
         actions = self.bd.get_actions()
@@ -295,3 +333,22 @@ class TestBlockdev(testtools.TestCase):
         self.assertEqual(partsize, fs_table[1][1])
         self.assertEqual(fstype, fs_table[1][2])
         self.assertEqual(partpath, fs_table[1][3])
+
+    def test_blockdev_available_partitions(self):
+        # add a non-empty partition
+        self.add_partition()
+
+        # we shouldn't have any empty partitions
+        empty = self.bd.available_partitions
+        self.assertEqual(empty, [])
+
+
+        partnum=2
+        self.add_partition(partnum=partnum, partsize=1 * GB,
+                           fstype='leave unformatted',
+                           mountpoint=None, flag=None)
+
+        # we should have one empty partition
+        empty = self.bd.available_partitions
+        print(empty)
+        self.assertEqual(len(empty), 1)