Deprecate raises(..., 'code(as_a_string)') / `warns(..., 'code(as_a_string)')

testing/python/raises.py

@@ -4,25 +4,32 @@ import six
 
 import pytest
 from _pytest.outcomes import Failed
+from _pytest.warning_types import PytestDeprecationWarning
 
 
 class TestRaises(object):
     def test_raises(self):
         source = "int('qwe')"
-        excinfo = pytest.raises(ValueError, source)
+        with pytest.warns(PytestDeprecationWarning):
+            excinfo = pytest.raises(ValueError, source)
         code = excinfo.traceback[-1].frame.code
         s = str(code.fullsource)
         assert s == source
 
     def test_raises_exec(self):
-        pytest.raises(ValueError, "a,x = []")
+        with pytest.warns(PytestDeprecationWarning) as warninfo:
+            pytest.raises(ValueError, "a,x = []")
+        assert warninfo[0].filename == __file__
 
     def test_raises_exec_correct_filename(self):
-        excinfo = pytest.raises(ValueError, 'int("s")')
-        assert __file__ in excinfo.traceback[-1].path
+        with pytest.warns(PytestDeprecationWarning):
+            excinfo = pytest.raises(ValueError, 'int("s")')
+            assert __file__ in excinfo.traceback[-1].path
 
     def test_raises_syntax_error(self):
-        pytest.raises(SyntaxError, "qwe qwe qwe")
+        with pytest.warns(PytestDeprecationWarning) as warninfo:
+            pytest.raises(SyntaxError, "qwe qwe qwe")
+        assert warninfo[0].filename == __file__
 
     def test_raises_function(self):
         pytest.raises(ValueError, int, "hello")