Apply ruff/flake8-pytest-style preview rules (PT) (#606)

* Enforce ruff/flake8-pytest-style rule PT001

PT001 Use `@pytest.fixture` over `@pytest.fixture()`

* Enforce ruff/flake8-pytest-style rule PT012

PT012 `pytest.raises()` block should contain a single simple statement

Author: DimitriPapadopoulos

numcodecs/tests/test_entrypoints.py

@@ -8,7 +8,7 @@
 here = os.path.abspath(os.path.dirname(__file__))
 
 
-@pytest.fixture()
+@pytest.fixture
 def set_path():
     sys.path.append(here)
     numcodecs.registry.run_entrypoints()

numcodecs/tests/test_pcodec.py

@@ -57,8 +57,8 @@ def test_config():
 
 
 def test_invalid_config_error():
+    codec = PCodec(mode_spec='bogus')
     with pytest.raises(ValueError):
-        codec = PCodec(mode_spec='bogus')
         check_encode_decode_array_to_bytes(arrays[0], codec)
 
 

numcodecs/tests/test_shuffle.py

@@ -162,7 +162,7 @@ def test_expected_result():
 
 
 def test_incompatible_elementsize():
+    arr = np.arange(1001, dtype='u1')
+    codec = Shuffle(elementsize=4)
     with pytest.raises(ValueError):
-        arr = np.arange(1001, dtype='u1')
-        codec = Shuffle(elementsize=4)
         codec.encode(arr)

pyproject.toml

@@ -162,7 +162,6 @@ ignore = [
     "PT004",  # deprecated
     "PT005",  # deprecated
     "PT011",
-    "PT012",
 	"RUF001",
     "UP007",
     "UP027",  # deprecated