add annexworktree to ls_file_collection

Thie commit adds the type `annexworktree`
to the command `ls_file_collection`.

The type `annexworktree` is implemented
by `iter_annexworktree`.

datalad_next/commands/ls_file_collection.py

@@ -59,6 +59,9 @@
     GitWorktreeFileSystemItem,
     iter_gitworktree,
 )
+from datalad_next.iter_collections.annexworktree import (
+    iter_annexworktree,
+)
 
 
 lgr = getLogger('datalad.local.ls_file_collection')
@@ -72,6 +75,7 @@
     'directory',
     'tarfile',
     'gitworktree',
+    'annexworktree',
 )
 
 
@@ -110,7 +114,7 @@ def get_collection_iter(self, **kwargs):
         hash = kwargs['hash']
         iter_fx = None
         iter_kwargs = None
-        if type in ('directory', 'tarfile', 'gitworktree'):
+        if type in ('directory', 'tarfile', 'gitworktree', 'annexworktree'):
             if not isinstance(collection, Path):
                 self.raise_for(
                     kwargs,
@@ -131,6 +135,9 @@ def get_collection_iter(self, **kwargs):
         elif type == 'gitworktree':
             iter_fx = iter_gitworktree
             item2res = gitworktreeitem_to_dict
+        elif type == 'annexworktree':
+            iter_fx = iter_annexworktree
+            item2res = annexworktreeitem_to_dict
         else:
             raise RuntimeError(
                 'unhandled collection-type: this is a defect, please report.')
@@ -205,6 +212,20 @@ def gitworktreeitem_to_dict(item, hash) -> Dict:
     return d
 
 
+def annexworktreeitem_to_dict(item, hash) -> Dict:
+    d = gitworktreeitem_to_dict(item, hash)
+    if item.annexkey:
+        d['annexkey'] = item.annexkey
+
+    if item.annexsize:
+        d['annexsize'] = item.annexsize
+
+    if item.annexobjpath:
+        d['annexobjpath'] = item.annexobjpath
+
+    return d
+
+
 @build_doc
 class LsFileCollection(ValidatedInterface):
     """Report information on files in a collection

datalad_next/commands/tests/test_ls_file_collection.py

@@ -165,3 +165,19 @@ def test_ls_renderer():
         Path(__file__).parent,
         result_renderer='tailored',
     )
+
+
+def test_ls_annexworktree_empty_dataset(existing_dataset):
+
+    (existing_dataset.pathobj / 'sample.bin').write_bytes(b'\x00' * 1024)
+    existing_dataset.save(message='add sample file')
+
+    res = ls_file_collection('annexworktree', existing_dataset.pathobj)
+    assert len(res) == 4
+    annexed_files = [annex_info for annex_info in res if 'annexkey' in annex_info]
+    assert len(annexed_files) == 1
+    assert {
+        'annexkey',
+        'annexsize',
+        'annexobjpath'
+    }.issubset(set(annexed_files[0].keys()))