Add deprecation module to centralize deprecation messages and bits of code

_pytest/config.py

@@ -115,10 +115,8 @@ def _prepareconfig(args=None, plugins=None):
         if not isinstance(args, str):
             raise ValueError("not a string or argument list: %r" % (args,))
         args = shlex.split(args, posix=sys.platform != "win32")
-        # we want to remove this way of passing arguments to pytest.main()
-        # in pytest-4.0
-        warning = ('passing a string to pytest.main() is deprecated, '
-                   'pass a list of arguments instead.')
+        from _pytest import deprecated
+        warning = deprecated.MAIN_STR_ARGS
     config = get_config()
     pluginmanager = config.pluginmanager
     try:

_pytest/deprecated.py

@@ -0,0 +1,21 @@
+"""
+This module contains deprecation messages and bits of code used elsewhere in the codebase
+that is planned to be removed in the next pytest release.
+
+Keeping it in a central location makes it easy to track what is deprecated and should
+be removed when the time comes.
+"""
+
+
+MAIN_STR_ARGS = 'passing a string to pytest.main() is deprecated, ' \
+                      'pass a list of arguments instead.'
+
+YIELD_TESTS = 'yield tests are deprecated, and scheduled to be removed in pytest 4.0'
+
+FUNCARG_PREFIX = (
+    '{name}: declaring fixtures using "pytest_funcarg__" prefix is deprecated '
+    'and scheduled to be removed in pytest 4.0.  '
+    'Please remove the prefix and use the @pytest.fixture decorator instead.')
+
+GETFUNCARGVALUE = "use of getfuncargvalue is deprecated, use getfixturevalue"
+

_pytest/fixtures.py

@@ -450,8 +450,9 @@ class FixtureRequest(FuncargnamesCompatAttr):
 
     def getfuncargvalue(self, argname):
         """ Deprecated, use getfixturevalue. """
+        from _pytest import deprecated
         warnings.warn(
-            "use of getfuncargvalue is deprecated, use getfixturevalue",
+            deprecated.GETFUNCARGVALUE,
             DeprecationWarning)
         return self.getfixturevalue(argname)
 
@@ -880,10 +881,6 @@ def yield_fixture(scope="function", params=None, autouse=False, ids=None, name=N
 
 
 defaultfuncargprefixmarker = fixture()
-funcarg_prefix_warning = (
-    '{name}: declaring fixtures using "pytest_funcarg__" prefix is deprecated '
-    'and scheduled to be removed in pytest 4.0.  '
-    'Please remove the prefix and use the @pytest.fixture decorator instead.')
 
 
 @fixture(scope="session")
@@ -1066,7 +1063,8 @@ class FixtureManager:
                 if not callable(obj):
                     continue
                 marker = defaultfuncargprefixmarker
-                self.config.warn('C1', funcarg_prefix_warning.format(name=name))
+                from _pytest import deprecated
+                self.config.warn('C1', deprecated.FUNCARG_PREFIX.format(name=name))
                 name = name[len(self._argprefix):]
             elif not isinstance(marker, FixtureFunctionMarker):
                 # magic globals  with __getattr__ might have got us a wrong

_pytest/python.py

@@ -585,6 +585,7 @@ class Generator(FunctionMixin, PyCollector):
         # test generators are seen as collectors but they also
         # invoke setup/teardown on popular request
         # (induced by the common "test_*" naming shared with normal tests)
+        from _pytest import deprecated
         self.session._setupstate.prepare(self)
         # see FunctionMixin.setup and test_setupstate_is_preserved_134
         self._preservedparent = self.parent.obj
@@ -602,8 +603,7 @@ class Generator(FunctionMixin, PyCollector):
                 raise ValueError("%r generated tests with non-unique name %r" %(self, name))
             seen[name] = True
             l.append(self.Function(name, self, args=args, callobj=call))
-            msg = 'yield tests are deprecated, and scheduled to be removed in pytest 4.0'
-            self.config.warn('C1', msg, fslocation=self.fspath)
+            self.config.warn('C1', deprecated.YIELD_TESTS, fslocation=self.fspath)
         return l
 
     def getcallargs(self, obj):

testing/acceptance_test.py

@@ -763,51 +763,3 @@ class TestDurationWithFixture:
             * call *test_1*
         """)
 
-
-def test_yield_tests_deprecation(testdir):
-    testdir.makepyfile("""
-        def func1(arg, arg2):
-            assert arg == arg2
-        def test_gen():
-            yield "m1", func1, 15, 3*5
-            yield "m2", func1, 42, 6*7
-    """)
-    result = testdir.runpytest('-ra')
-    result.stdout.fnmatch_lines([
-        '*yield tests are deprecated, and scheduled to be removed in pytest 4.0*',
-        '*2 passed*',
-    ])
-
-
-def test_funcarg_prefix_deprecation(testdir):
-    testdir.makepyfile("""
-        def pytest_funcarg__value():
-            return 10
-
-        def test_funcarg_prefix(value):
-            assert value == 10
-    """)
-    result = testdir.runpytest('-ra')
-    result.stdout.fnmatch_lines([
-        ('WC1 None pytest_funcarg__value: '
-         'declaring fixtures using "pytest_funcarg__" prefix is deprecated '
-         'and scheduled to be removed in pytest 4.0.  '
-         'Please remove the prefix and use the @pytest.fixture decorator instead.'),
-        '*1 passed*',
-    ])
-
-
-def test_str_args_deprecated(tmpdir, testdir):
-    """Deprecate passing strings to pytest.main(). Scheduled for removal in pytest-4.0."""
-    warnings = []
-
-    class Collect:
-        def pytest_logwarning(self, message):
-            warnings.append(message)
-
-    ret = pytest.main("%s -x" % tmpdir, plugins=[Collect()])
-    testdir.delete_loaded_modules()
-    msg = ('passing a string to pytest.main() is deprecated, '
-           'pass a list of arguments instead.')
-    assert msg in warnings
-    assert ret == EXIT_NOTESTSCOLLECTED

testing/deprecated_test.py

@@ -0,0 +1,55 @@
+import pytest
+
+
+def test_yield_tests_deprecation(testdir):
+    testdir.makepyfile("""
+        def func1(arg, arg2):
+            assert arg == arg2
+        def test_gen():
+            yield "m1", func1, 15, 3*5
+            yield "m2", func1, 42, 6*7
+    """)
+    result = testdir.runpytest('-ra')
+    result.stdout.fnmatch_lines([
+        '*yield tests are deprecated, and scheduled to be removed in pytest 4.0*',
+        '*2 passed*',
+    ])
+
+
+def test_funcarg_prefix_deprecation(testdir):
+    testdir.makepyfile("""
+        def pytest_funcarg__value():
+            return 10
+
+        def test_funcarg_prefix(value):
+            assert value == 10
+    """)
+    result = testdir.runpytest('-ra')
+    result.stdout.fnmatch_lines([
+        ('WC1 None pytest_funcarg__value: '
+         'declaring fixtures using "pytest_funcarg__" prefix is deprecated '
+         'and scheduled to be removed in pytest 4.0.  '
+         'Please remove the prefix and use the @pytest.fixture decorator instead.'),
+        '*1 passed*',
+    ])
+
+
+def test_str_args_deprecated(tmpdir, testdir):
+    """Deprecate passing strings to pytest.main(). Scheduled for removal in pytest-4.0."""
+    from _pytest.main import EXIT_NOTESTSCOLLECTED
+    warnings = []
+
+    class Collect:
+        def pytest_logwarning(self, message):
+            warnings.append(message)
+
+    ret = pytest.main("%s -x" % tmpdir, plugins=[Collect()])
+    testdir.delete_loaded_modules()
+    msg = ('passing a string to pytest.main() is deprecated, '
+           'pass a list of arguments instead.')
+    assert msg in warnings
+    assert ret == EXIT_NOTESTSCOLLECTED
+
+
+def test_getfuncargvalue_is_deprecated(request):
+    pytest.deprecated_call(request.getfuncargvalue, 'tmpdir')

testing/python/fixture.py

@@ -2909,5 +2909,4 @@ class TestParameterizedSubRequest:
             """.format(fixfile.strpath, testfile.basename))
 
 
-def test_getfuncargvalue_is_deprecated(request):
-    pytest.deprecated_call(request.getfuncargvalue, 'tmpdir')
+

testing/test_tmpdir.py

@@ -29,7 +29,6 @@ def test_funcarg(testdir):
     assert bn == "qwe__abc"
 
 def test_ensuretemp(recwarn):
-    #pytest.deprecated_call(pytest.ensuretemp, 'hello')
     d1 = pytest.ensuretemp('hello')
     d2 = pytest.ensuretemp('hello')
     assert d1 == d2