Make cpp redeclaration an error (vs. a compiler crash). Fixes #523.
[cython.git] / runtests.py
index d4921d5bacddfa5a239260f642a10983df31717f..3436d473a081890eeb7e658d963c483afbfd22f6 100644 (file)
@@ -6,10 +6,12 @@ import re
 import gc
 import codecs
 import shutil
+import time
 import unittest
 import doctest
 import operator
 import tempfile
+import traceback
 try:
     from StringIO import StringIO
 except ImportError:
@@ -20,15 +22,32 @@ try:
 except ImportError:
     import pickle
 
+try:
+    import threading
+except ImportError: # No threads, no problems
+    threading = None
 
 WITH_CYTHON = True
+CY3_DIR = None
 
 from distutils.dist import Distribution
 from distutils.core import Extension
 from distutils.command.build_ext import build_ext as _build_ext
 distutils_distro = Distribution()
 
-TEST_DIRS = ['compile', 'errors', 'run', 'wrappers', 'pyregr']
+if sys.platform == 'win32':
+    # TODO: Figure out why this hackery (see http://thread.gmane.org/gmane.comp.python.cython.devel/8280/).
+    config_files = distutils_distro.find_config_files()
+    try: config_files.remove('setup.cfg')
+    except ValueError: pass
+    distutils_distro.parse_config_files(config_files)
+
+    cfgfiles = distutils_distro.find_config_files()
+    try: cfgfiles.remove('setup.cfg')
+    except ValueError: pass
+    distutils_distro.parse_config_files(cfgfiles)
+
+TEST_DIRS = ['compile', 'errors', 'run', 'wrappers', 'pyregr', 'build']
 TEST_RUN_DIRS = ['run', 'wrappers', 'pyregr']
 
 # Lists external modules, and a matcher matching tests
@@ -50,20 +69,37 @@ EXT_DEP_INCLUDES = [
 
 VER_DEP_MODULES = {
     # tests are excluded if 'CurrentPythonVersion OP VersionTuple', i.e.
-    # (2,4) : (operator.le, ...) excludes ... when PyVer <= 2.4.x
+    # (2,4) : (operator.lt, ...) excludes ... when PyVer < 2.4.x
+    (2,4) : (operator.lt, lambda x: x in ['run.extern_builtins_T258',
+                                          'run.builtin_sorted'
+                                          ]),
     (2,5) : (operator.lt, lambda x: x in ['run.any',
                                           'run.all',
                                           ]),
-    (2,4) : (operator.le, lambda x: x in ['run.extern_builtins_T258'
-                                          ]),
     (2,6) : (operator.lt, lambda x: x in ['run.print_function',
                                           'run.cython3',
+                                          'run.pure_py', # decorators, with statement
                                           ]),
+    # The next line should start (3,); but this is a dictionary, so
+    # we can only have one (3,) key.  Since 2.7 is supposed to be the
+    # last 2.x release, things would have to change drastically for this
+    # to be unsafe...
+    (2,999): (operator.lt, lambda x: x in ['run.special_methods_T561_py3']),
     (3,): (operator.ge, lambda x: x in ['run.non_future_division',
                                         'compile.extsetslice',
-                                        'compile.extdelslice']),
+                                        'compile.extdelslice',
+                                        'run.special_methods_T561_py2']),
 }
 
+# files that should not be converted to Python 3 code with 2to3
+KEEP_2X_FILES = [
+    os.path.join('Cython', 'Debugger', 'Tests', 'test_libcython_in_gdb.py'),
+    os.path.join('Cython', 'Debugger', 'Tests', 'test_libpython_in_gdb.py'),
+    os.path.join('Cython', 'Debugger', 'libcython.py'),
+    os.path.join('Cython', 'Debugger', 'libpython.py'),
+]
+
+COMPILER = None
 INCLUDE_DIRS = [ d for d in os.getenv('INCLUDE', '').split(os.pathsep) if d ]
 CFLAGS = os.getenv('CFLAGS', '').split()
 
@@ -71,7 +107,7 @@ class build_ext(_build_ext):
     def build_extension(self, ext):
         if ext.language == 'c++':
             try:
-                try: # Py2.7+ & Py3.2+ 
+                try: # Py2.7+ & Py3.2+
                     compiler_obj = self.compiler_obj
                 except AttributeError:
                     compiler_obj = self.compiler
@@ -111,7 +147,7 @@ class ErrorWriter(object):
 class TestBuilder(object):
     def __init__(self, rootdir, workdir, selectors, exclude_selectors, annotate,
                  cleanup_workdir, cleanup_sharedlibs, with_pyregr, cython_only,
-                 languages, test_bugs, fork):
+                 languages, test_bugs, fork, language_level):
         self.rootdir = rootdir
         self.workdir = workdir
         self.selectors = selectors
@@ -124,6 +160,7 @@ class TestBuilder(object):
         self.languages = languages
         self.test_bugs = test_bugs
         self.fork = fork
+        self.language_level = language_level
 
     def build_suite(self):
         suite = unittest.TestSuite()
@@ -140,9 +177,10 @@ class TestBuilder(object):
                     continue
                 suite.addTest(
                     self.handle_directory(path, filename))
-        if sys.platform not in ['win32'] and sys.version_info[0] < 3:
-            # Non-Windows makefile, can't run Cython under Py3.
-            if [1 for selector in self.selectors if selector("embedded")]:
+        if sys.platform not in ['win32']:
+            # Non-Windows makefile.
+            if [1 for selector in self.selectors if selector("embedded")] \
+                and not [1 for selector in self.exclude_selectors if selector("embedded")]:
                 suite.addTest(unittest.makeSuite(EmbedTest))
         return suite
 
@@ -156,6 +194,14 @@ class TestBuilder(object):
         filenames = os.listdir(path)
         filenames.sort()
         for filename in filenames:
+            if filename.endswith(".srctree"):
+                if not [ 1 for match in self.selectors if match(filename) ]:
+                    continue
+                if self.exclude_selectors:
+                    if [1 for match in self.exclude_selectors if match(filename)]:
+                        continue
+                suite.addTest(EndToEndTest(os.path.join(path, filename), workdir, self.cleanup_workdir))
+                continue
             if not (filename.endswith(".pyx") or filename.endswith(".py")):
                 continue
             if filename.startswith('.'): continue # certain emacs backup files
@@ -169,7 +215,9 @@ class TestBuilder(object):
             if self.exclude_selectors:
                 if [1 for match in self.exclude_selectors if match(fqmodule)]:
                     continue
-            if context in TEST_RUN_DIRS:
+            if context == 'pyregr':
+                test_class = CythonPyregrTestCase
+            elif context in TEST_RUN_DIRS:
                 if module.startswith("test_"):
                     test_class = CythonUnitTestCase
                 else:
@@ -179,6 +227,9 @@ class TestBuilder(object):
             for test in self.build_tests(test_class, path, workdir,
                                          module, expect_errors):
                 suite.addTest(test)
+            if context == 'run' and filename.endswith('.py'):
+                # additionally test file in real Python
+                suite.addTest(PureDoctestTestCase(module, os.path.join(path, filename)))
         return suite
 
     def build_tests(self, test_class, path, workdir, module, expect_errors):
@@ -209,12 +260,14 @@ class TestBuilder(object):
                           cleanup_workdir=self.cleanup_workdir,
                           cleanup_sharedlibs=self.cleanup_sharedlibs,
                           cython_only=self.cython_only,
-                          fork=self.fork)
+                          fork=self.fork,
+                          language_level=self.language_level)
 
 class CythonCompileTestCase(unittest.TestCase):
     def __init__(self, test_directory, workdir, module, language='c',
                  expect_errors=False, annotate=False, cleanup_workdir=True,
-                 cleanup_sharedlibs=True, cython_only=False, fork=True):
+                 cleanup_sharedlibs=True, cython_only=False, fork=True,
+                 language_level=2):
         self.test_directory = test_directory
         self.workdir = workdir
         self.module = module
@@ -225,6 +278,7 @@ class CythonCompileTestCase(unittest.TestCase):
         self.cleanup_sharedlibs = cleanup_sharedlibs
         self.cython_only = cython_only
         self.fork = fork
+        self.language_level = language_level
         unittest.TestCase.__init__(self)
 
     def shortDescription(self):
@@ -295,47 +349,64 @@ class CythonCompileTestCase(unittest.TestCase):
             if is_related(filename) and os.path.isfile(os.path.join(workdir, filename)) ]
 
     def split_source_and_output(self, test_directory, module, workdir):
-        source_file = os.path.join(test_directory, module) + '.pyx'
-        source_and_output = codecs.open(
-            self.find_module_source_file(source_file), 'rU', 'ISO-8859-1')
-        out = codecs.open(os.path.join(workdir, module + '.pyx'),
-                          'w', 'ISO-8859-1')
-        for line in source_and_output:
-            last_line = line
-            if line.startswith("_ERRORS"):
-                out.close()
-                out = ErrorWriter()
-            else:
-                out.write(line)
+        source_file = self.find_module_source_file(os.path.join(test_directory, module) + '.pyx')
+        source_and_output = codecs.open(source_file, 'rU', 'ISO-8859-1')
+        try:
+            out = codecs.open(os.path.join(workdir, module + os.path.splitext(source_file)[1]),
+                              'w', 'ISO-8859-1')
+            for line in source_and_output:
+                last_line = line
+                if line.startswith("_ERRORS"):
+                    out.close()
+                    out = ErrorWriter()
+                else:
+                    out.write(line)
+        finally:
+            source_and_output.close()
         try:
             geterrors = out.geterrors
         except AttributeError:
+            out.close()
             return []
         else:
             return geterrors()
 
-    def run_cython(self, test_directory, module, targetdir, incdir, annotate):
+    def run_cython(self, test_directory, module, targetdir, incdir, annotate,
+                   extra_compile_options=None):
         include_dirs = INCLUDE_DIRS[:]
         if incdir:
             include_dirs.append(incdir)
         source = self.find_module_source_file(
             os.path.join(test_directory, module + '.pyx'))
         target = os.path.join(targetdir, self.build_target_filename(module))
+
+        if extra_compile_options is None:
+            extra_compile_options = {}
+
+        try:
+            CompilationOptions
+        except NameError:
+            from Cython.Compiler.Main import CompilationOptions
+            from Cython.Compiler.Main import compile as cython_compile
+            from Cython.Compiler.Main import default_options
+
         options = CompilationOptions(
-            pyrex_default_options,
+            default_options,
             include_path = include_dirs,
             output_file = target,
             annotate = annotate,
             use_listing_file = False,
             cplus = self.language == 'cpp',
+            language_level = self.language_level,
             generate_pxi = False,
-#            evaluate_tree_assertions = True,
-            evaluate_tree_assertions = False,
+            evaluate_tree_assertions = True,
+            **extra_compile_options
             )
         cython_compile(source, options=options,
                        full_module_name=module)
 
-    def run_distutils(self, test_directory, module, workdir, incdir):
+    def run_distutils(self, test_directory, module, workdir, incdir,
+                      extra_extension_args=None):
         cwd = os.getcwd()
         os.chdir(workdir)
         try:
@@ -344,16 +415,25 @@ class CythonCompileTestCase(unittest.TestCase):
             if incdir:
                 build_extension.include_dirs.append(incdir)
             build_extension.finalize_options()
+            if COMPILER:
+                build_extension.compiler = COMPILER
             ext_include_dirs = []
             for match, get_additional_include_dirs in EXT_DEP_INCLUDES:
                 if match(module):
                     ext_include_dirs += get_additional_include_dirs()
+            ext_compile_flags = CFLAGS[:]
+            if  build_extension.compiler == 'mingw32':
+                ext_compile_flags.append('-Wno-format')
+            if extra_extension_args is None:
+                extra_extension_args = {}
+
             self.copy_related_files(test_directory, workdir, module)
             extension = Extension(
                 module,
                 sources = self.find_source_files(workdir, module),
                 include_dirs = ext_include_dirs,
-                extra_compile_args = CFLAGS,
+                extra_compile_args = ext_compile_flags,
+                **extra_extension_args
                 )
             if self.language == 'cpp':
                 extension.language = 'c++'
@@ -412,9 +492,11 @@ class CythonRunTestCase(CythonCompileTestCase):
         result.startTest(self)
         try:
             self.setUp()
-            self.runCompileTest()
-            if not self.cython_only:
-                self.run_doctests(self.module, result)
+            try:
+                self.runCompileTest()
+                self.run_tests(result)
+            finally:
+                check_thread_termination()
         except Exception:
             result.addError(self, sys.exc_info())
             result.stopTest(self)
@@ -423,6 +505,10 @@ class CythonRunTestCase(CythonCompileTestCase):
         except Exception:
             pass
 
+    def run_tests(self, result):
+        if not self.cython_only:
+            self.run_doctests(self.module, result)
+
     def run_doctests(self, module_name, result):
         if sys.version_info[0] >= 3 or not hasattr(os, 'fork') or not self.fork:
             doctest.DocTestSuite(module_name).run(result)
@@ -455,7 +541,6 @@ class CythonRunTestCase(CythonCompileTestCase):
                     output = open(result_file, 'wb')
                     pickle.dump(partial_result.data(), output)
                 except:
-                    import traceback
                     traceback.print_exc()
             finally:
                 try: output.close()
@@ -484,6 +569,39 @@ class CythonRunTestCase(CythonCompileTestCase):
             try: os.unlink(result_file)
             except: pass
 
+class PureDoctestTestCase(unittest.TestCase):
+    def __init__(self, module_name, module_path):
+        self.module_name = module_name
+        self.module_path = module_path
+        unittest.TestCase.__init__(self, 'run')
+
+    def shortDescription(self):
+        return "running pure doctests in %s" % self.module_name
+
+    def run(self, result=None):
+        if result is None:
+            result = self.defaultTestResult()
+        loaded_module_name = 'pure_doctest__' + self.module_name
+        result.startTest(self)
+        try:
+            self.setUp()
+
+            import imp
+            m = imp.load_source(loaded_module_name, self.module_path)
+            try:
+                doctest.DocTestSuite(m).run(result)
+            finally:
+                del m
+                if loaded_module_name in sys.modules:
+                    del sys.modules[loaded_module_name]
+                check_thread_termination()
+        except Exception:
+            result.addError(self, sys.exc_info())
+            result.stopTest(self)
+        try:
+            self.tearDown()
+        except Exception:
+            pass
 
 is_private_field = re.compile('^_[^_]').match
 
@@ -538,25 +656,56 @@ class PartialTestResult(_TextTestResult):
             self.write("%s\n" % line)
 
 
-class CythonUnitTestCase(CythonCompileTestCase):
+class CythonUnitTestCase(CythonRunTestCase):
     def shortDescription(self):
         return "compiling (%s) tests in %s" % (self.language, self.module)
 
-    def run(self, result=None):
-        if result is None:
-            result = self.defaultTestResult()
-        result.startTest(self)
+    def run_tests(self, result):
+        unittest.defaultTestLoader.loadTestsFromName(self.module).run(result)
+
+
+class CythonPyregrTestCase(CythonRunTestCase):
+    def _run_unittest(self, result, *classes):
+        """Run tests from unittest.TestCase-derived classes."""
+        valid_types = (unittest.TestSuite, unittest.TestCase)
+        suite = unittest.TestSuite()
+        for cls in classes:
+            if isinstance(cls, str):
+                if cls in sys.modules:
+                    suite.addTest(unittest.findTestCases(sys.modules[cls]))
+                else:
+                    raise ValueError("str arguments must be keys in sys.modules")
+            elif isinstance(cls, valid_types):
+                suite.addTest(cls)
+            else:
+                suite.addTest(unittest.makeSuite(cls))
+        suite.run(result)
+
+    def _run_doctest(self, result, module):
+        self.run_doctests(module, result)
+
+    def run_tests(self, result):
         try:
-            self.setUp()
-            self.runCompileTest()
-            unittest.defaultTestLoader.loadTestsFromName(self.module).run(result)
-        except Exception:
-            result.addError(self, sys.exc_info())
-            result.stopTest(self)
+            from test import test_support as support
+        except ImportError: # Py3k
+            from test import support
+
+        def run_unittest(*classes):
+            return self._run_unittest(result, *classes)
+        def run_doctest(module, verbosity=None):
+            return self._run_doctest(result, module)
+
+        support.run_unittest = run_unittest
+        support.run_doctest = run_doctest
+
         try:
-            self.tearDown()
-        except Exception:
-            pass
+            module = __import__(self.module)
+            if hasattr(module, 'test_main'):
+                module.test_main()
+        except (unittest.SkipTest, support.ResourceDenied):
+            result.addSkip(self, 'ok')
+
+include_debugger = sys.version_info[:2] > (2, 5)
 
 def collect_unittests(path, module_prefix, suite, selectors):
     def file_matches(filename):
@@ -567,7 +716,10 @@ def collect_unittests(path, module_prefix, suite, selectors):
 
     loader = unittest.TestLoader()
 
-    skipped_dirs = []
+    if include_debugger:
+        skipped_dirs = []
+    else:
+        skipped_dirs = ['Cython' + os.path.sep + 'Debugger' + os.path.sep]
 
     for dirpath, dirnames, filenames in os.walk(path):
         if dirpath != path and "__init__.py" not in filenames:
@@ -592,45 +744,136 @@ def collect_unittests(path, module_prefix, suite, selectors):
                         module = getattr(module, x)
                     suite.addTests([loader.loadTestsFromModule(module)])
 
+
+
 def collect_doctests(path, module_prefix, suite, selectors):
     def package_matches(dirname):
+        if dirname == 'Debugger' and not include_debugger:
+            return False
         return dirname not in ("Mac", "Distutils", "Plex")
     def file_matches(filename):
-        return (filename.endswith(".py") and not ('~' in filename
-                or '#' in filename or filename.startswith('.')))
+        filename, ext = os.path.splitext(filename)
+        blacklist = ['libcython', 'libpython', 'test_libcython_in_gdb',
+                     'TestLibCython']
+        return (ext == '.py' and not
+                '~' in filename and not
+                '#' in filename and not
+                filename.startswith('.') and not
+                filename in blacklist)
     import doctest, types
     for dirpath, dirnames, filenames in os.walk(path):
-        parentname = os.path.split(dirpath)[-1]
-        if package_matches(parentname):
-            for f in filenames:
-                if file_matches(f):
-                    if not f.endswith('.py'): continue
-                    filepath = os.path.join(dirpath, f)[:-len(".py")]
-                    modulename = module_prefix + filepath[len(path)+1:].replace(os.path.sep, '.')
-                    if not [ 1 for match in selectors if match(modulename) ]:
-                        continue
-                    module = __import__(modulename)
-                    for x in modulename.split('.')[1:]:
-                        module = getattr(module, x)
-                    if hasattr(module, "__doc__") or hasattr(module, "__test__"):
-                        try:
-                            suite.addTest(doctest.DocTestSuite(module))
-                        except ValueError: # no tests
-                            pass
+        for dir in list(dirnames):
+            if not package_matches(dir):
+                dirnames.remove(dir)
+        for f in filenames:
+            if file_matches(f):
+                if not f.endswith('.py'): continue
+                filepath = os.path.join(dirpath, f)
+                if os.path.getsize(filepath) == 0: continue
+                filepath = filepath[:-len(".py")]
+                modulename = module_prefix + filepath[len(path)+1:].replace(os.path.sep, '.')
+                if not [ 1 for match in selectors if match(modulename) ]:
+                    continue
+                if 'in_gdb' in modulename:
+                    # These should only be imported from gdb.
+                    continue
+                module = __import__(modulename)
+                for x in modulename.split('.')[1:]:
+                    module = getattr(module, x)
+                if hasattr(module, "__doc__") or hasattr(module, "__test__"):
+                    try:
+                        suite.addTest(doctest.DocTestSuite(module))
+                    except ValueError: # no tests
+                        pass
+
+
+class EndToEndTest(unittest.TestCase):
+    """
+    This is a test of build/*.srctree files, where srctree defines a full
+    directory structure and its header gives a list of commands to run.
+    """
+    cython_root = os.path.dirname(os.path.abspath(__file__))
+
+    def __init__(self, treefile, workdir, cleanup_workdir=True):
+        self.name = os.path.splitext(os.path.basename(treefile))[0]
+        self.treefile = treefile
+        self.workdir = os.path.join(workdir, self.name)
+        self.cleanup_workdir = cleanup_workdir
+        cython_syspath = self.cython_root
+        for path in sys.path[::-1]:
+            if path.startswith(self.cython_root):
+                # Py3 installation and refnanny build prepend their
+                # fixed paths to sys.path => prefer that over the
+                # generic one
+                cython_syspath = path + os.pathsep + cython_syspath
+        self.cython_syspath = cython_syspath
+        unittest.TestCase.__init__(self)
+
+    def shortDescription(self):
+        return "End-to-end %s" % self.name
+
+    def setUp(self):
+        from Cython.TestUtils import unpack_source_tree
+        _, self.commands = unpack_source_tree(self.treefile, self.workdir)
+        self.old_dir = os.getcwd()
+        os.chdir(self.workdir)
+        if self.workdir not in sys.path:
+            sys.path.insert(0, self.workdir)
+
+    def tearDown(self):
+        if self.cleanup_workdir:
+            for trial in range(5):
+                try:
+                    shutil.rmtree(self.workdir)
+                except OSError:
+                    time.sleep(0.1)
+                else:
+                    break
+        os.chdir(self.old_dir)
+
+    def runTest(self):
+        commands = (self.commands
+            .replace("CYTHON", "PYTHON %s" % os.path.join(self.cython_root, 'cython.py'))
+            .replace("PYTHON", sys.executable))
+        try:
+            old_path = os.environ.get('PYTHONPATH')
+            os.environ['PYTHONPATH'] = self.cython_syspath + os.pathsep + os.path.join(self.cython_syspath, (old_path or ''))
+            for command in commands.split('\n'):
+                if sys.version_info[:2] >= (2,4):
+                    import subprocess
+                    p = subprocess.Popen(commands,
+                                         stderr=subprocess.PIPE,
+                                         stdout=subprocess.PIPE,
+                                         shell=True)
+                    out, err = p.communicate()
+                    res = p.returncode
+                    if res != 0:
+                        print(command)
+                        print(out)
+                        print(err)
+                else:
+                    res = os.system(command)
+                self.assertEqual(0, res, "non-zero exit status")
+        finally:
+            if old_path:
+                os.environ['PYTHONPATH'] = old_path
+            else:
+                del os.environ['PYTHONPATH']
+
 
 # TODO: Support cython_freeze needed here as well.
 # TODO: Windows support.
 
 class EmbedTest(unittest.TestCase):
-    
+
     working_dir = "Demos/embed"
-    
+
     def setUp(self):
         self.old_dir = os.getcwd()
         os.chdir(self.working_dir)
         os.system(
             "make PYTHON='%s' clean > /dev/null" % sys.executable)
-    
+
     def tearDown(self):
         try:
             os.system(
@@ -638,10 +881,24 @@ class EmbedTest(unittest.TestCase):
         except:
             pass
         os.chdir(self.old_dir)
-        
+
     def test_embed(self):
+        from distutils import sysconfig
+        libname = sysconfig.get_config_var('LIBRARY')
+        libdir = sysconfig.get_config_var('LIBDIR')
+        if not os.path.isdir(libdir) or libname not in os.listdir(libdir):
+            libdir = os.path.join(os.path.dirname(sys.executable), '..', 'lib')
+            if not os.path.isdir(libdir) or libname not in os.listdir(libdir):
+                libdir = os.path.join(libdir, 'python%d.%d' % sys.version_info[:2], 'config')
+                if not os.path.isdir(libdir) or libname not in os.listdir(libdir):
+                    # report the error for the original directory
+                    libdir = sysconfig.get_config_var('LIBDIR')
+        cython = 'cython.py'
+        if sys.version_info[0] >=3:
+            cython = os.path.join(CY3_DIR, cython)
+        cython = os.path.abspath(os.path.join('..', '..', cython))
         self.assert_(os.system(
-            "make PYTHON='%s' test > make.output" % sys.executable) == 0)
+            "make PYTHON='%s' CYTHON='%s' LIBDIR1='%s' test > make.output" % (sys.executable, cython, libdir)) == 0)
         try:
             os.remove('make.output')
         except OSError:
@@ -684,11 +941,15 @@ class FileListExcluder:
 
     def __init__(self, list_file):
         self.excludes = {}
-        for line in open(list_file).readlines():
-            line = line.strip()
-            if line and line[0] != '#':
-                self.excludes[line.split()[0]] = True
-                
+        f = open(list_file)
+        try:
+            for line in f.readlines():
+                line = line.strip()
+                if line and line[0] != '#':
+                    self.excludes[line.split()[0]] = True
+        finally:
+            f.close()
+
     def __call__(self, testname):
         return testname in self.excludes or testname.split('.')[-1] in self.excludes
 
@@ -702,18 +963,58 @@ def refactor_for_py3(distdir, cy3_dir):
     if not os.path.exists(cy3_dir):
         os.makedirs(cy3_dir)
     import distutils.log as dlog
-    dlog.set_threshold(dlog.DEBUG)
+    dlog.set_threshold(dlog.INFO)
     copydir_run_2to3(distdir, cy3_dir, fixer_names=fixers,
                      template = '''
                      global-exclude *
                      graft Cython
                      recursive-exclude Cython *
                      recursive-include Cython *.py *.pyx *.pxd
+                     recursive-include Cython/Debugger/Tests *
+                     include runtests.py
+                     include cython.py
                      ''')
     sys.path.insert(0, cy3_dir)
 
+    for keep_2x_file in KEEP_2X_FILES:
+        destfile = os.path.join(cy3_dir, keep_2x_file)
+        shutil.copy(keep_2x_file, destfile)
+
+class PendingThreadsError(RuntimeError):
+    pass
+
+threads_seen = []
+
+def check_thread_termination(ignore_seen=True):
+    if threading is None: # no threading enabled in CPython
+        return
+    current = threading.currentThread()
+    blocking_threads = []
+    for t in threading.enumerate():
+        if not t.isAlive() or t == current:
+            continue
+        t.join(timeout=2)
+        if t.isAlive():
+            if not ignore_seen:
+                blocking_threads.append(t)
+                continue
+            for seen in threads_seen:
+                if t is seen:
+                    break
+            else:
+                threads_seen.append(t)
+                blocking_threads.append(t)
+    if not blocking_threads:
+        return
+    sys.stderr.write("warning: left-over threads found after running test:\n")
+    for t in blocking_threads:
+        sys.stderr.write('...%s\n'  % repr(t))
+    raise PendingThreadsError("left-over threads found after running test")
+
+def main():
+
+    DISTDIR = os.path.join(os.getcwd(), os.path.dirname(sys.argv[0]))
 
-if __name__ == '__main__':
     from optparse import OptionParser
     parser = OptionParser()
     parser.add_option("--no-cleanup", dest="cleanup_workdir",
@@ -725,6 +1026,8 @@ if __name__ == '__main__':
     parser.add_option("--no-cython", dest="with_cython",
                       action="store_false", default=True,
                       help="do not run the Cython compiler, only the C compiler")
+    parser.add_option("--compiler", dest="compiler", default=None,
+                      help="C compiler type")
     parser.add_option("--no-c", dest="use_c",
                       action="store_false", default=True,
                       help="do not test C compilation")
@@ -742,7 +1045,7 @@ if __name__ == '__main__':
                       help="do not run the file based tests")
     parser.add_option("--no-pyregr", dest="pyregr",
                       action="store_false", default=True,
-                      help="do not run the regression tests of CPython in tests/pyregr/")    
+                      help="do not run the regression tests of CPython in tests/pyregr/")
     parser.add_option("--cython-only", dest="cython_only",
                       action="store_true", default=False,
                       help="only compile pyx to c, do not run C compiler or run the tests")
@@ -776,17 +1079,23 @@ if __name__ == '__main__':
     parser.add_option("-T", "--ticket", dest="tickets",
                       action="append",
                       help="a bug ticket number to run the respective test in 'tests/*'")
+    parser.add_option("-3", dest="language_level",
+                      action="store_const", const=3, default=2,
+                      help="set language level to Python 3 (useful for running the CPython regression tests)'")
     parser.add_option("--xml-output", dest="xml_output_dir", metavar="DIR",
                       help="write test results in XML to directory DIR")
     parser.add_option("--exit-ok", dest="exit_ok", default=False,
                       action="store_true",
                       help="exit without error code even on test failures")
+    parser.add_option("--root-dir", dest="root_dir", default=os.path.join(DISTDIR, 'tests'),
+                      help="working directory")
+    parser.add_option("--work-dir", dest="work_dir", default=os.path.join(os.getcwd(), 'BUILD'),
+                      help="working directory")
 
     options, cmd_args = parser.parse_args()
 
-    DISTDIR = os.path.join(os.getcwd(), os.path.dirname(sys.argv[0]))
-    ROOTDIR = os.path.join(DISTDIR, 'tests')
-    WORKDIR = os.path.join(os.getcwd(), 'BUILD')
+    ROOTDIR = os.path.abspath(options.root_dir)
+    WORKDIR = os.path.abspath(options.work_dir)
 
     if sys.version_info[0] >= 3:
         options.doctests = False
@@ -795,12 +1104,15 @@ if __name__ == '__main__':
                 # try if Cython is installed in a Py3 version
                 import Cython.Compiler.Main
             except Exception:
+                # back out anything the import process loaded, then
+                # 2to3 the Cython sources to make them re-importable
                 cy_modules = [ name for name in sys.modules
                                if name == 'Cython' or name.startswith('Cython.') ]
                 for name in cy_modules:
                     del sys.modules[name]
                 # hasn't been refactored yet - do it now
-                cy3_dir = os.path.join(WORKDIR, 'Cy3')
+                global CY3_DIR
+                CY3_DIR = cy3_dir = os.path.join(WORKDIR, 'Cy3')
                 if sys.version_info >= (3,1):
                     refactor_for_py3(DISTDIR, cy3_dir)
                 elif os.path.isdir(cy3_dir):
@@ -820,6 +1132,7 @@ if __name__ == '__main__':
             coverage.start()
 
     if WITH_CYTHON:
+        global CompilationOptions, pyrex_default_options, cython_compile
         from Cython.Compiler.Main import \
             CompilationOptions, \
             default_options as pyrex_default_options, \
@@ -833,7 +1146,7 @@ if __name__ == '__main__':
 
     # RUN ALL TESTS!
     UNITTEST_MODULE = "Cython"
-    UNITTEST_ROOT = os.path.join(os.getcwd(), UNITTEST_MODULE)
+    UNITTEST_ROOT = os.path.join(os.path.dirname(__file__), UNITTEST_MODULE)
     if WITH_CYTHON:
         if os.path.exists(WORKDIR):
             for path in os.listdir(WORKDIR):
@@ -842,13 +1155,13 @@ if __name__ == '__main__':
     if not os.path.exists(WORKDIR):
         os.makedirs(WORKDIR)
 
+    sys.stderr.write("Python %s\n" % sys.version)
+    sys.stderr.write("\n")
     if WITH_CYTHON:
         from Cython.Compiler.Version import version
         sys.stderr.write("Running tests against Cython %s\n" % version)
     else:
         sys.stderr.write("Running tests without Cython.\n")
-    sys.stderr.write("Python %s\n" % sys.version)
-    sys.stderr.write("\n")
 
     if options.with_refnanny:
         from pyximport.pyxbuild import pyx_to_dll
@@ -863,6 +1176,11 @@ if __name__ == '__main__':
         sys.stderr.write("Disabling forked testing to support XML test output\n")
         options.fork = False
 
+    if WITH_CYTHON and options.language_level == 3:
+        sys.stderr.write("Using Cython language level 3.\n")
+
+    sys.stderr.write("\n")
+
     test_bugs = False
     if options.tickets:
         for ticket_number in options.tickets:
@@ -881,19 +1199,22 @@ if __name__ == '__main__':
     # Chech which external modules are not present and exclude tests
     # which depends on them (by prefix)
 
-    missing_dep_excluder = MissingDependencyExcluder(EXT_DEP_MODULES) 
-    version_dep_excluder = VersionDependencyExcluder(VER_DEP_MODULES) 
+    missing_dep_excluder = MissingDependencyExcluder(EXT_DEP_MODULES)
+    version_dep_excluder = VersionDependencyExcluder(VER_DEP_MODULES)
     exclude_selectors = [missing_dep_excluder, version_dep_excluder] # want to pring msg at exit
 
     if options.exclude:
         exclude_selectors += [ re.compile(r, re.I|re.U).search for r in options.exclude ]
-    
+
     if not test_bugs:
-        exclude_selectors += [ FileListExcluder("tests/bugs.txt") ]
-    
+        exclude_selectors += [ FileListExcluder(os.path.join(ROOTDIR, "bugs.txt")) ]
+
     if sys.platform in ['win32', 'cygwin'] and sys.version_info < (2,6):
         exclude_selectors += [ lambda x: x == "run.specialfloat" ]
 
+    global COMPILER
+    if options.compiler:
+        COMPILER = options.compiler
     languages = []
     if options.use_c:
         languages.append('c')
@@ -913,7 +1234,7 @@ if __name__ == '__main__':
                                 options.annotate_source, options.cleanup_workdir,
                                 options.cleanup_sharedlibs, options.pyregr,
                                 options.cython_only, languages, test_bugs,
-                                options.fork)
+                                options.fork, options.language_level)
         test_suite.addTest(filetests.build_suite())
 
     if options.system_pyregr and languages:
@@ -921,7 +1242,7 @@ if __name__ == '__main__':
                                 options.annotate_source, options.cleanup_workdir,
                                 options.cleanup_sharedlibs, True,
                                 options.cython_only, languages, test_bugs,
-                                options.fork)
+                                options.fork, options.language_level)
         test_suite.addTest(
             filetests.handle_directory(
                 os.path.join(sys.prefix, 'lib', 'python'+sys.version[:3], 'test'),
@@ -941,7 +1262,7 @@ if __name__ == '__main__':
         ignored_modules = ('Options', 'Version', 'DebugFlags', 'CmdLine')
         modules = [ module for name, module in sys.modules.items()
                     if module is not None and
-                    name.startswith('Cython.Compiler.') and 
+                    name.startswith('Cython.Compiler.') and
                     name[len('Cython.Compiler.'):] not in ignored_modules ]
         if options.coverage:
             coverage.report(modules, show_missing=0)
@@ -957,7 +1278,29 @@ if __name__ == '__main__':
         import refnanny
         sys.stderr.write("\n".join([repr(x) for x in refnanny.reflog]))
 
+    print("ALL DONE")
+
     if options.exit_ok:
-        sys.exit(0)
+        return_code = 0
     else:
-        sys.exit(not result.wasSuccessful())
+        return_code = not result.wasSuccessful()
+
+    try:
+        check_thread_termination(ignore_seen=False)
+        sys.exit(return_code)
+    except PendingThreadsError:
+        # normal program exit won't kill the threads, do it the hard way here
+        os._exit(return_code)
+
+if __name__ == '__main__':
+    try:
+        main()
+    except SystemExit: # <= Py2.4 ...
+        raise
+    except Exception:
+        traceback.print_exc()
+        try:
+            check_thread_termination(ignore_seen=False)
+        except PendingThreadsError:
+            # normal program exit won't kill the threads, do it the hard way here
+            os._exit(1)