From 62b45e611b76394da9b81539315a489db1f1d144 Mon Sep 17 00:00:00 2001
From: gboscagli <gabrieleboscagli99@gmail.com>
Date: Thu, 5 Mar 2026 14:56:34 +0100
Subject: [PATCH 1/2] adding test_deconcatenate.py

---
 tests/test_deconcatenate.py | 43 +++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 tests/test_deconcatenate.py

diff --git a/tests/test_deconcatenate.py b/tests/test_deconcatenate.py
new file mode 100644
index 00000000..bb6bbb51
--- /dev/null
+++ b/tests/test_deconcatenate.py
@@ -0,0 +1,43 @@
+from anndata import AnnData
+from spatialdata_io.converters.legacy_anndata import to_legacy_anndata
+from spatialdata import SpatialData, match_sdata_to_table
+
+def test_deconcatenate(
+        full_sdata: SpatialData, 
+        by: str,
+        target_coordinate_system: str,
+        sdata_table_name: str = "table",
+        region_key: str = "region",
+        join: str = "right") -> AnnData:
+    """
+    From a `SpatialData` object containing multiple regions, subset to a single region and return as an AnnData object.
+
+    Parameters
+    ----------
+    full_sdata : SpatialData
+        `SpatialData` object containing regions to deconcatenate.
+    by : str
+        Value in `region_key` to use for subsetting.
+    target_coordinate_system : str
+        Coordinate system to use to populate `AnnData` object.
+    sdata_table_name : str, optional
+        Name of the table in `full_sdata` to subset. Default is "table".
+    region_key : str, optional
+        Name of obs column to filter `full_sdata` on. Default is "region".
+    join : str, optional
+        Join method to use in `match_sdata_to_table`. Default is "right" to keep all rows in the table.
+
+    Returns
+    -------
+    AnnData
+        An `AnnData` object containing a subset of `full_sdata` filtered according to `region_key == by`.
+    """
+
+    sdata_table = full_sdata[sdata_table_name]
+
+    #maybe add "table" parameter coupled with "table_name" to follow match_sdata_to_table structure?
+    sdata_deconcat = match_sdata_to_table(full_sdata, table=sdata_table[sdata_table.obs[region_key] == by], table_name="table_name_test", how=join)
+    adata = to_legacy_anndata(sdata_deconcat, coordinate_system=target_coordinate_system, table_name="table_name_test", include_images=False)
+    #TODO: support for adding images to anndata object?
+
+    return adata
\ No newline at end of file

From 3a77cdc5ab34ad85091e961b3bd95b034021f647 Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 5 Mar 2026 14:18:27 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 tests/test_deconcatenate.py | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/tests/test_deconcatenate.py b/tests/test_deconcatenate.py
index bb6bbb51..b1129ff9 100644
--- a/tests/test_deconcatenate.py
+++ b/tests/test_deconcatenate.py
@@ -1,16 +1,18 @@
 from anndata import AnnData
-from spatialdata_io.converters.legacy_anndata import to_legacy_anndata
 from spatialdata import SpatialData, match_sdata_to_table
 
+from spatialdata_io.converters.legacy_anndata import to_legacy_anndata
+
+
 def test_deconcatenate(
-        full_sdata: SpatialData, 
-        by: str,
-        target_coordinate_system: str,
-        sdata_table_name: str = "table",
-        region_key: str = "region",
-        join: str = "right") -> AnnData:
-    """
-    From a `SpatialData` object containing multiple regions, subset to a single region and return as an AnnData object.
+    full_sdata: SpatialData,
+    by: str,
+    target_coordinate_system: str,
+    sdata_table_name: str = "table",
+    region_key: str = "region",
+    join: str = "right",
+) -> AnnData:
+    """From a `SpatialData` object containing multiple regions, subset to a single region and return as an AnnData object.
 
     Parameters
     ----------
@@ -32,12 +34,15 @@ def test_deconcatenate(
     AnnData
         An `AnnData` object containing a subset of `full_sdata` filtered according to `region_key == by`.
     """
-
     sdata_table = full_sdata[sdata_table_name]
 
-    #maybe add "table" parameter coupled with "table_name" to follow match_sdata_to_table structure?
-    sdata_deconcat = match_sdata_to_table(full_sdata, table=sdata_table[sdata_table.obs[region_key] == by], table_name="table_name_test", how=join)
-    adata = to_legacy_anndata(sdata_deconcat, coordinate_system=target_coordinate_system, table_name="table_name_test", include_images=False)
-    #TODO: support for adding images to anndata object?
+    # maybe add "table" parameter coupled with "table_name" to follow match_sdata_to_table structure?
+    sdata_deconcat = match_sdata_to_table(
+        full_sdata, table=sdata_table[sdata_table.obs[region_key] == by], table_name="table_name_test", how=join
+    )
+    adata = to_legacy_anndata(
+        sdata_deconcat, coordinate_system=target_coordinate_system, table_name="table_name_test", include_images=False
+    )
+    # TODO: support for adding images to anndata object?
 
-    return adata
\ No newline at end of file
+    return adata