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Add an example on how to update config.warn calls 

As commented in https://github.com/pytest-dev/pytest-cov/pull/230#pullrequestreview-157958838
This commit is contained in:
Bruno Oliveira 2018-09-23 22:42:09 -03:00
parent 4474beeb82
commit 9899b8f1fb
1 changed files with 13 additions and 3 deletions
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doc/en/deprecations.rst
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@ -22,14 +22,24 @@ Below is a complete list of all pytest features which are considered deprecated.
Those methods were part of the internal pytest warnings system, but since ``3.8`` pytest is using the builtin warning
system for its own warnings, so those two functions are now deprecated.
``Config.warn`` should be replaced by calls to the standard ``warnings.warn``.
``Config.warn`` should be replaced by calls to the standard ``warnings.warn``, example:
.. code-block:: python
config.warn("C1", "some warning")
Becomes:
.. code-block:: python
warnings.warn(pytest.PytestWarning("some warning"))
``Node.warn`` now supports two signatures:
* ``node.warn(PytestWarning("some message"))``: is now the recommended way to call this function.
* ``node.warn(PytestWarning("some message"))``: is now the **recommended** way to call this function.
The warning instance must be a PytestWarning or subclass.
* ``node.warn("CI", "some message")``: this code/message form is now deprecated and should be converted to the warning instance form above.
* ``node.warn("CI", "some message")``: this code/message form is now **deprecated** and should be converted to the warning instance form above.
``pytest_namespace``