Adopt '[tool.pytest-enabler]' for configuration (PEP 518)

CHANGES.rst

@@ -1,3 +1,9 @@
+v1.3.0
+======
+
+#4: pytest-enabler now uses ``[tool.pytest-enabler]`` for configuration
+in accordance with :pep:`518#tool-table` (``[pytest.enabler]`` is deprecated).
+
 v1.2.1
 ======
 

README.rst

@@ -22,7 +22,7 @@
 
 The 'enabler' plugin allows configuration of plugins if present, but omits the settings if the plugin is not present. For example, to configure black to be enabled if the plugin is present, but not when it is not, add the following to your pyproject.toml::
 
-    [pytest.enabler.black]
+    [tool.pytest-enabler.black]
     addopts = "--black"
 
 Known to work with the following plugins:

pytest_enabler/__init__.py

@@ -1,6 +1,7 @@
 import contextlib
 import shlex
 import sys
+import warnings
 
 import toml
 from jaraco.context import suppress
@@ -24,7 +25,12 @@ def none_as_empty(ob):
 def read_plugins(filename):
     with open(filename) as strm:
         defn = toml.load(strm)
-    return defn["pytest"]["enabler"]
+    if "pytest" in defn and "enabler" in defn["pytest"]:
+        msg = "pytest-enabler configuration should use the `[tool.pytest-enabler]` "
+        msg += "table in pyproject.toml (`[pytest.enabler]` is now deprecated)."
+        warnings.warn(msg, DeprecationWarning)
+        return defn["pytest"]["enabler"]
+    return defn["tool"]["pytest-enabler"]
 
 
 def pytest_load_initial_conftests(early_config, parser, args):

tests/test_enabler.py

@@ -14,19 +14,24 @@ def tmpdir_cur(tmpdir):
         yield tmpdir
 
 
-def test_pytest_addoption(tmpdir_cur):
+@pytest.mark.parametrize("config_table", ["tool.pytest-enabler", "pytest.enabler"])
+def test_pytest_addoption(tmpdir_cur, config_table):
     pathlib.Path('pyproject.toml').write_text(
         textwrap.dedent(
-            """
-            [pytest.enabler.black]
+            f"""
+            [{config_table}.black]
             addopts = "--black"
             """
         )
     )
     config = mock.MagicMock()
     config.pluginmanager.has_plugin = lambda name: name == 'black'
     args = []
-    enabler.pytest_load_initial_conftests(config, None, args)
+    if config_table.startswith("tool."):
+        enabler.pytest_load_initial_conftests(config, None, args)
+    else:
+        with pytest.warns(DeprecationWarning):
+            enabler.pytest_load_initial_conftests(config, None, args)
     assert args == ['--black']