Remove 'message' parameter from pytest.raises

changelog/5180.removal.rst

@@ -1,10 +1,12 @@
-As per our policy, the following features have been deprecated in the 4.X series and are now being
+As per our policy, the following features have been deprecated in the 4.X series and are now
 removed:
 
 * ``Request.getfuncargvalue``: use ``Request.getfixturevalue`` instead.
 
 * ``pytest.raises`` and ``pytest.warns`` no longer support strings as the second argument.
 
+* ``message`` parameter of ``pytest.raises``.
+
 
 For more information consult
 `Deprecations and Removals <https://docs.pytest.org/en/latest/deprecations.html>`__ in the docs.

doc/en/deprecations.rst

@@ -20,8 +20,8 @@ Below is a complete list of all pytest features which are considered deprecated.
 :ref:`standard warning filters <warnings>`.
 
 
-Removal of ``funcargnames`` alias for ``fixturenames``
+``funcargnames`` alias for ``fixturenames``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 .. deprecated:: 5.0
 
@@ -34,40 +34,6 @@ in places where we or plugin authors must distinguish between fixture names and
 names supplied by non-fixture things such as ``pytest.mark.parametrize``.
 
 
-.. _`raises message deprecated`:
-
-``"message"`` parameter of ``pytest.raises``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-.. deprecated:: 4.1
-
-It is a common mistake to think this parameter will match the exception message, while in fact
-it only serves to provide a custom message in case the ``pytest.raises`` check fails. To prevent
-users from making this mistake, and because it is believed to be little used, pytest is
-deprecating it without providing an alternative for the moment.
-
-If you have a valid use case for this parameter, consider that to obtain the same results
-you can just call ``pytest.fail`` manually at the end of the ``with`` statement.
-
-For example:
-
-.. code-block:: python
-
-    with pytest.raises(TimeoutError, message="Client got unexpected message"):
-        wait_for(websocket.recv(), 0.5)
-
-
-Becomes:
-
-.. code-block:: python
-
-    with pytest.raises(TimeoutError):
-        wait_for(websocket.recv(), 0.5)
-        pytest.fail("Client got unexpected message")
-
-
-If you still have concerns about this deprecation and future removal, please comment on
-`issue #3974 <https://github.com/pytest-dev/pytest/issues/3974>`__.
 
 
 ``pytest.config`` global
@@ -103,6 +69,43 @@ Removed Features
 As stated in our :ref:`backwards-compatibility` policy, deprecated features are removed only in major releases after
 an appropriate period of deprecation has passed.
 
+
+.. _`raises message deprecated`:
+
+``"message"`` parameter of ``pytest.raises``
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. versionremoved:: 5.0
+
+It is a common mistake to think this parameter will match the exception message, while in fact
+it only serves to provide a custom message in case the ``pytest.raises`` check fails. To prevent
+users from making this mistake, and because it is believed to be little used, pytest is
+deprecating it without providing an alternative for the moment.
+
+If you have a valid use case for this parameter, consider that to obtain the same results
+you can just call ``pytest.fail`` manually at the end of the ``with`` statement.
+
+For example:
+
+.. code-block:: python
+
+    with pytest.raises(TimeoutError, message="Client got unexpected message"):
+        wait_for(websocket.recv(), 0.5)
+
+
+Becomes:
+
+.. code-block:: python
+
+    with pytest.raises(TimeoutError):
+        wait_for(websocket.recv(), 0.5)
+        pytest.fail("Client got unexpected message")
+
+
+If you still have concerns about this deprecation and future removal, please comment on
+`issue #3974 <https://github.com/pytest-dev/pytest/issues/3974>`__.
+
+
 .. _raises-warns-exec:
 
 ``raises`` / ``warns`` with a string as the second argument

src/_pytest/deprecated.py

@@ -42,12 +42,6 @@ FUNCARGNAMES = PytestDeprecationWarning(
     "since pytest 2.3 - use the newer attribute instead."
 )
 
-RAISES_MESSAGE_PARAMETER = PytestDeprecationWarning(
-    "The 'message' parameter is deprecated.\n"
-    "(did you mean to use `match='some regex'` to check the exception message?)\n"
-    "Please see:\n"
-    "  https://docs.pytest.org/en/4.6-maintenance/deprecations.html#message-parameter-of-pytest-raises"
-)
 
 RESULT_LOG = PytestDeprecationWarning(
     "--result-log is deprecated and scheduled for removal in pytest 6.0.\n"

src/_pytest/python_api.py

@@ -1,7 +1,6 @@
 import inspect
 import math
 import pprint
-import warnings
 from collections.abc import Iterable
 from collections.abc import Mapping
 from collections.abc import Sized
@@ -12,7 +11,6 @@ from numbers import Number
 from more_itertools.more import always_iterable
 
 import _pytest._code
-from _pytest import deprecated
 from _pytest.compat import STRING_TYPES
 from _pytest.outcomes import fail
 
@@ -538,8 +536,6 @@ def raises(expected_exception, *args, **kwargs):
 
     __ https://docs.python.org/3/library/re.html#regular-expression-syntax
 
-    :kwparam message: **(deprecated since 4.1)** if specified, provides a custom failure message
-        if the exception is not raised. See :ref:`the deprecation docs <raises message deprecated>` for a workaround.
 
     .. currentmodule:: _pytest._code
 
@@ -656,9 +652,6 @@ def raises(expected_exception, *args, **kwargs):
     match_expr = None
 
     if not args:
-        if "message" in kwargs:
-            message = kwargs.pop("message")
-            warnings.warn(deprecated.RAISES_MESSAGE_PARAMETER, stacklevel=2)
         if "match" in kwargs:
             match_expr = kwargs.pop("match")
         if kwargs:

testing/deprecated_test.py

@@ -76,12 +76,6 @@ def test_external_plugins_integrated(testdir, plugin):
         testdir.parseconfig("-p", plugin)
 
 
-def test_raises_message_argument_deprecated():
-    with pytest.warns(pytest.PytestDeprecationWarning):
-        with pytest.raises(RuntimeError, message="foobar"):
-            raise RuntimeError
-
-
 def test_pytest_plugins_in_non_top_level_conftest_deprecated(testdir):
     from _pytest.deprecated import PYTEST_PLUGINS_FROM_NON_TOP_LEVEL_CONFTEST
 

testing/python/raises.py

@@ -2,7 +2,6 @@ import sys
 
 import pytest
 from _pytest.outcomes import Failed
-from _pytest.warning_types import PytestDeprecationWarning
 
 
 class TestRaises:
@@ -155,17 +154,6 @@ class TestRaises:
         else:
             assert False, "Expected pytest.raises.Exception"
 
-    def test_custom_raise_message(self):
-        message = "TEST_MESSAGE"
-        try:
-            with pytest.warns(PytestDeprecationWarning):
-                with pytest.raises(ValueError, message=message):
-                    pass
-        except pytest.raises.Exception as e:
-            assert e.msg == message
-        else:
-            assert False, "Expected pytest.raises.Exception"
-
     @pytest.mark.parametrize("method", ["function", "with"])
     def test_raises_cyclic_reference(self, method):
         """