Add __enter__/__exit__ for TileDB Groups

[johnkerl]

Context: single-cell-data/TileDB-SOMA#113

Then this:

https://github.com/single-cell-data/TileDB-SingleCell/blob/836d02a47c6f53d6df5ca77acc081834fc323079/apis/python/src/tiledbsc/tiledb_group.py#L57-L79

will become as simple as it already is for arrays:

https://github.com/single-cell-data/TileDB-SingleCell/blob/836d02a47c6f53d6df5ca77acc081834fc323079/apis/python/src/tiledbsc/tiledb_array.py#L34-L45

[nguyenv]

Thanks! Would just like this added in test_group.py. Just one in area like this should be sufficient:

(tiledb-3.10) vivian@mangonada:~/TileDB-Py$ git diff
diff --git a/tiledb/tests/test_group.py b/tiledb/tests/test_group.py
index a4cc6f3..734a1d7 100644
--- a/tiledb/tests/test_group.py
+++ b/tiledb/tests/test_group.py
@@ -200,10 +200,9 @@ class GroupTest(GroupTestCase):
         assert grp["subgroup"].type == tiledb.Group
         grp.close()

-        grp.open("w")
-        del grp["subarray"]
-        grp.remove("subgroup")
-        grp.close()
+        with grp.open("w") as g:
+            del g["subarray"]
+            g.remove("subgroup")

         grp.open("r")
         assert len(grp) == 0

[nguyenv]

Opps sorry. Told you the wrong thing before. This will work -->

(tiledb-3.10) vivian@mangonada:~/TileDB-Py$ git diff
diff --git a/tiledb/tests/test_group.py b/tiledb/tests/test_group.py
index d092595..b65387c 100644
--- a/tiledb/tests/test_group.py
+++ b/tiledb/tests/test_group.py
@@ -197,9 +197,9 @@ class GroupTest(GroupTestCase):
         assert grp["subgroup"].type == tiledb.Group
         grp.close()

-        with grp.open("w") as g: # test __enter__ and __exit__
-            del g["subarray"]
-            g.remove("subgroup")
+        with tiledb.Group(grp_path, "w") as grp:  # test __enter__ and __exit__
+            del grp["subarray"]
+            grp.remove("subgroup")

         grp.open("r")
         assert len(grp) == 0
(tiledb-3.10) vivian@mangonada:~/TileDB-Py$ pytest tiledb/tests/test_group.py
================================================ test session starts ================================================
platform linux -- Python 3.10.4, pytest-7.1.2, pluggy-1.0.0
rootdir: /home/vivian/TileDB-Py, configfile: pyproject.toml
plugins: hypothesis-6.46.6
collected 9 items

tiledb/tests/test_group.py .........                                                                          [100%]

================================================= 9 passed in 0.25s =================================================

[johnkerl]

@nguyenv can you please merge this? 🙏