#9886-deprecate-nose-support

changelog/9886.deprecation.rst

@@ -0,0 +1 @@
+The functionality for running tests written for `nose` has been officially deprecated.

doc/en/deprecations.rst

@@ -15,9 +15,21 @@ should be used instead.
 Deprecated Features
 -------------------
 
+
 Below is a complete list of all pytest features which are considered deprecated. Using those features will issue
 :class:`~pytest.PytestWarning` or subclasses, which can be filtered using :ref:`standard warning filters <warnings>`.
 
+
+Support for tests written for nose
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. deprecated:: 7.1.3
+
+Support for running tests written for nose is now deprecated.
+
+.. _node-ctor-fspath-deprecation:
+
+
 .. _instance-collector-deprecation:
 
 The ``pytest.Instance`` collector
@@ -37,7 +49,7 @@ However, to keep such uses working, a dummy type has been instanted in ``pytest.
 and importing it emits a deprecation warning. This will be removed in pytest 8.
 
 
-.. _node-ctor-fspath-deprecation:
+.. _support_for_tests_written_for_nose:
 
 ``fspath`` argument for Node constructors replaced with ``pathlib.Path``
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

doc/en/how-to/nose.rst

@@ -3,7 +3,8 @@
 How to run tests written for nose
 =======================================
 
-``pytest`` has basic support for running tests written for nose_.
+``pytest`` has basic support for running tests written for nose_. This functionality has been
+deprecated and is likely to be removed in ``pytest 8.x``.
 
 .. _nosestyle:
 

src/_pytest/deprecated.py

@@ -22,6 +22,10 @@ DEPRECATED_EXTERNAL_PLUGINS = {
     "pytest_faulthandler",
 }
 
+NOSE_SUPPORT = PytestRemovedIn8Warning(
+    "Support for nose tests is deprecated and will be removed in a future release."
+)
+
 
 # This can be* removed pytest 8, but it's harmless and common, so no rush to remove.
 # * If you're in the future: "could have been".

src/_pytest/nose.py

@@ -1,5 +1,8 @@
 """Run testsuites written for nose."""
+import warnings
+
 from _pytest.config import hookimpl
+from _pytest.deprecated import NOSE_SUPPORT
 from _pytest.fixtures import getfixturemarker
 from _pytest.nodes import Item
 from _pytest.python import Function
@@ -38,5 +41,6 @@ def call_optional(obj: object, name: str) -> bool:
         return False
     # If there are any problems allow the exception to raise rather than
     # silently ignoring it.
+    warnings.warn(NOSE_SUPPORT, stacklevel=2)
     method()
     return True

testing/test_nose.py

@@ -496,3 +496,25 @@ def test_nose_setup_skipped_if_non_callable(pytester: Pytester) -> None:
     )
     result = pytester.runpytest(p, "-p", "nose")
     assert result.ret == 0
+
+
+def test_nose_setup_is_deprecated(pytester: Pytester) -> None:
+    pytester.makepyfile(
+        """
+        from nose.tools import with_setup
+
+        def setup_fn_no_op():
+            ...
+
+        def teardown_fn_no_op():
+            ...
+
+        @with_setup(setup_fn_no_op, teardown_fn_no_op)
+        def test_omits_warnings():
+            ...
+        """
+    )
+    output = pytester.runpytest()
+    message = "*PytestRemovedIn8Warning: Support for nose tests is deprecated and will be removed in a future release.*"
+    output.stdout.fnmatch_lines([message])
+    output.assert_outcomes(passed=1, warnings=2)