From a095eb70939f62b64b281758eb20953765467ddc Mon Sep 17 00:00:00 2001
From: Manuel Reis <reis@dkrz.de>
Date: Wed, 1 Jul 2026 18:12:49 +0200
Subject: [PATCH 1/2] Test intergration decode_cf parameter

---
 data/misc/diff_missing_fill.nc | Bin 0 -> 8240 bytes
 tests/conftest.py              |   8 ++++++++
 tests/test_entrypoint.py       |  16 ++++++++++++++++
 3 files changed, 24 insertions(+)
 create mode 100644 data/misc/diff_missing_fill.nc

diff --git a/data/misc/diff_missing_fill.nc b/data/misc/diff_missing_fill.nc
new file mode 100644
index 0000000000000000000000000000000000000000..74e0e4863ba268264fcd47af6be49355dfd2c4dc
GIT binary patch
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diff --git a/tests/conftest.py b/tests/conftest.py
index a4d929c..2080b52 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -122,6 +122,14 @@ def sample_cordex_path(data_dir: Path) -> Path:
         / "pr_EUR-11_NCC-NorESM1-M_rcp85_r1i1p1_GERICS-REMO2015_v2_3hr_200701020130-200701020430.nc"
     )
 
+@pytest.fixture
+def sample_incoherent_encoding_path(data_dir: Path) -> Path:
+    """Return path to a incoherent NetCDF file."""
+    return (
+        data_dir
+        / "misc/diff_missing_fill.nc"
+    )
+
 
 def pytest_configure(config):
     """Register custom markers."""
diff --git a/tests/test_entrypoint.py b/tests/test_entrypoint.py
index b1aef6d..ccd8e93 100644
--- a/tests/test_entrypoint.py
+++ b/tests/test_entrypoint.py
@@ -214,6 +214,22 @@ def test_xarray_open_with_freva_engine(self, sample_netcdf_path: Path):
         assert isinstance(ds, xr.Dataset)
         ds.close()
 
+    @pytest.mark.required_data
+    def test_decoding(self, sample_incoherent_encoding_path: Path):
+        with pytest.warns():
+            ds = xr.open_dataset(str(sample_incoherent_encoding_path), engine="prism")
+            assert isinstance(ds, xr.Dataset)
+            ds.close()
+
+    @pytest.mark.required_data
+    def test_not_decoding(self, sample_incoherent_encoding_path: Path):
+        import warnings
+        with warnings.catch_warnings():
+            warnings.simplefilter("error")
+            ds = xr.open_dataset(str(sample_incoherent_encoding_path), engine="prism", decode_cf=False)
+            assert isinstance(ds, xr.Dataset)
+            ds.close()
+
 
 class TestCustomRegistry:
     """Tests for custom backend registration."""

From 0db81de7752bc110f13e4008a8f335a7075da1bd Mon Sep 17 00:00:00 2001
From: Manuel Reis <reis@dkrz.de>
Date: Thu, 2 Jul 2026 14:15:12 +0200
Subject: [PATCH 2/2] Format

---
 tests/conftest.py        | 6 ++----
 tests/test_entrypoint.py | 5 ++++-
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/tests/conftest.py b/tests/conftest.py
index 2080b52..512289c 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -122,13 +122,11 @@ def sample_cordex_path(data_dir: Path) -> Path:
         / "pr_EUR-11_NCC-NorESM1-M_rcp85_r1i1p1_GERICS-REMO2015_v2_3hr_200701020130-200701020430.nc"
     )
 
+
 @pytest.fixture
 def sample_incoherent_encoding_path(data_dir: Path) -> Path:
     """Return path to a incoherent NetCDF file."""
-    return (
-        data_dir
-        / "misc/diff_missing_fill.nc"
-    )
+    return data_dir / "misc/diff_missing_fill.nc"
 
 
 def pytest_configure(config):
diff --git a/tests/test_entrypoint.py b/tests/test_entrypoint.py
index ccd8e93..7768ac1 100644
--- a/tests/test_entrypoint.py
+++ b/tests/test_entrypoint.py
@@ -224,9 +224,12 @@ def test_decoding(self, sample_incoherent_encoding_path: Path):
     @pytest.mark.required_data
     def test_not_decoding(self, sample_incoherent_encoding_path: Path):
         import warnings
+
         with warnings.catch_warnings():
             warnings.simplefilter("error")
-            ds = xr.open_dataset(str(sample_incoherent_encoding_path), engine="prism", decode_cf=False)
+            ds = xr.open_dataset(
+                str(sample_incoherent_encoding_path), engine="prism", decode_cf=False
+            )
             assert isinstance(ds, xr.Dataset)
             ds.close()