Clean up warnings generated by pytest's own suite

_pytest/python.py

@@ -936,7 +936,7 @@ def _idval(val, argname, idx, idfn, config=None):
             import warnings
             msg = "Raised while trying to determine id of parameter %s at position %d." % (argname, idx)
             msg += '\nUpdate your code as this will raise an error in pytest-4.0.'
-            warnings.warn(msg)
+            warnings.warn(msg, DeprecationWarning)
         if s:
             return _escape_strings(s)
 

testing/acceptance_test.py

@@ -339,10 +339,16 @@ class TestGeneralUsage(object):
             "*ERROR*test_b.py::b*",
         ])
 
+    @pytest.mark.usefixtures('recwarn')
     def test_namespace_import_doesnt_confuse_import_hook(self, testdir):
-        # Ref #383. Python 3.3's namespace package messed with our import hooks
-        # Importing a module that didn't exist, even if the ImportError was
-        # gracefully handled, would make our test crash.
+        """
+        Ref #383. Python 3.3's namespace package messed with our import hooks
+        Importing a module that didn't exist, even if the ImportError was
+        gracefully handled, would make our test crash.
+
+        Use recwarn here to silence this warning in Python 2.6 and 2.7:
+            ImportWarning: Not importing directory '...\not_a_package': missing __init__.py
+        """
         testdir.mkdir('not_a_package')
         p = testdir.makepyfile("""
             try:

testing/python/fixture.py

@@ -545,9 +545,21 @@ class TestRequestBasic(object):
                 return l.pop()
             def test_func(something): pass
         """)
+        import contextlib
+        if getfixmethod == 'getfuncargvalue':
+            warning_expectation = pytest.warns(DeprecationWarning)
+        else:
+            # see #1830 for a cleaner way to accomplish this
+            @contextlib.contextmanager
+            def expecting_no_warning(): yield
+
+            warning_expectation = expecting_no_warning()
+
         req = item._request
+        with warning_expectation:
             fixture_fetcher = getattr(req, getfixmethod)
-        pytest.raises(FixtureLookupError, fixture_fetcher, "notexists")
+            with pytest.raises(FixtureLookupError):
+                fixture_fetcher("notexists")
             val = fixture_fetcher("something")
             assert val == 1
             val = fixture_fetcher("something")
@@ -560,7 +572,6 @@ class TestRequestBasic(object):
             assert item.funcargs["something"] == 1
             assert len(get_public_names(item.funcargs)) == 2
             assert "request" in item.funcargs
-        #assert item.funcargs == {'something': 1, "other": 2}
 
     def test_request_addfinalizer(self, testdir):
         item = testdir.getitem("""

testing/python/metafunc.py

@@ -347,6 +347,7 @@ class TestMetafunc(object):
                 def test_foo(arg):
                     pass
             """)
+        with pytest.warns(DeprecationWarning):
             result = testdir.runpytest("--collect-only")
         result.stdout.fnmatch_lines([
             "<Module 'test_parametrize_ids_exception.py'>",

testing/test_config.py

@@ -141,7 +141,7 @@ class TestConfigAPI(object):
             from __future__ import unicode_literals
 
             def pytest_addoption(parser):
-                parser.addoption('--hello', type='string')
+                parser.addoption('--hello', type=str)
         """)
         config = testdir.parseconfig('--hello=this')
         assert config.getoption('hello') == 'this'

testing/test_parseopt.py

@@ -34,15 +34,16 @@ class TestParser(object):
         )
 
     def test_argument_type(self):
-        argument = parseopt.Argument('-t', dest='abc', type='int')
+        argument = parseopt.Argument('-t', dest='abc', type=int)
         assert argument.type is int
-        argument = parseopt.Argument('-t', dest='abc', type='string')
+        argument = parseopt.Argument('-t', dest='abc', type=str)
         assert argument.type is str
         argument = parseopt.Argument('-t', dest='abc', type=float)
         assert argument.type is float
+        with pytest.warns(DeprecationWarning):
             with pytest.raises(KeyError):
                 argument = parseopt.Argument('-t', dest='abc', type='choice')
-        argument = parseopt.Argument('-t', dest='abc', type='choice',
+        argument = parseopt.Argument('-t', dest='abc', type=str,
                                      choices=['red', 'blue'])
         assert argument.type is str
 
@@ -176,8 +177,8 @@ class TestParser(object):
             elif option.type is str:
                 option.default = "world"
         parser = parseopt.Parser(processopt=defaultget)
-        parser.addoption("--this", dest="this", type="int", action="store")
-        parser.addoption("--hello", dest="hello", type="string", action="store")
+        parser.addoption("--this", dest="this", type=int, action="store")
+        parser.addoption("--hello", dest="hello", type=str, action="store")
         parser.addoption("--no", dest="no", action="store_true")
         option = parser.parse([])
         assert option.hello == "world"

tox.ini

@@ -176,7 +176,11 @@ python_files=test_*.py *_test.py testing/*/*.py
 python_classes=Test Acceptance
 python_functions=test
 norecursedirs = .tox ja .hg cx_freeze_source
-
+filterwarnings= error
+                # produced by path.local
+                ignore:bad escape.*:DeprecationWarning:re
+                # produced by path.readlines
+                ignore:.*U.*mode is deprecated:DeprecationWarning
 
 [flake8]
 ignore =E401,E225,E261,E128,E124,E301,E302,E121,E303,W391,E501,E231,E126,E701,E265,E241,E251,E226,E101,W191,E131,E203,E122,E123,E271,E712,E222,E127,E125,E221,W292,E111,E113,E293,E262,W293,E129,E702,E201,E272,E202,E704,E731,E402