Remove unused code from packaging.tests.__init__

Lib/packaging/tests/__init__.py

@@ -14,16 +14,11 @@ standard library for packaging tests and unittest2 for distutils2 tests.
 import os
 import sys
 import unittest
-from io import StringIO
 
-# XXX move helpers to support, add tests for them, remove things that
-# duplicate test.support (or keep them for the backport; needs thinking)
-
-here = os.path.dirname(__file__) or os.curdir
-verbose = 1
 
 def test_suite():
     suite = unittest.TestSuite()
+    here = os.path.dirname(__file__) or os.curdir
     for fn in os.listdir(here):
         if fn.startswith("test") and fn.endswith(".py"):
             modname = "packaging.tests." + fn[:-3]
@@ -31,100 +26,3 @@ def test_suite():
             module = sys.modules[modname]
             suite.addTest(module.test_suite())
     return suite
-
-
-class Error(Exception):
-    """Base class for regression test exceptions."""
-
-
-class TestFailed(Error):
-    """Test failed."""
-
-
-class BasicTestRunner:
-    def run(self, test):
-        result = unittest.TestResult()
-        test(result)
-        return result
-
-
-def _run_suite(suite, verbose_=1):
-    """Run tests from a unittest.TestSuite-derived class."""
-    global verbose
-    verbose = verbose_
-    if verbose_:
-        runner = unittest.TextTestRunner(sys.stdout, verbosity=2)
-    else:
-        runner = BasicTestRunner()
-
-    result = runner.run(suite)
-    if not result.wasSuccessful():
-        if len(result.errors) == 1 and not result.failures:
-            err = result.errors[0][1]
-        elif len(result.failures) == 1 and not result.errors:
-            err = result.failures[0][1]
-        else:
-            err = "errors occurred; run in verbose mode for details"
-        raise TestFailed(err)
-
-
-def run_unittest(classes, verbose_=1):
-    """Run tests from unittest.TestCase-derived classes.
-
-    Originally extracted from stdlib test.test_support and modified to
-    support unittest2.
-    """
-    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))
-    _run_suite(suite, verbose_)
-
-
-def reap_children():
-    """Use this function at the end of test_main() whenever sub-processes
-    are started.  This will help ensure that no extra children (zombies)
-    stick around to hog resources and create problems when looking
-    for refleaks.
-
-    Extracted from stdlib test.support.
-    """
-
-    # Reap all our dead child processes so we don't leave zombies around.
-    # These hog resources and might be causing some of the buildbots to die.
-    if hasattr(os, 'waitpid'):
-        any_process = -1
-        while True:
-            try:
-                # This will raise an exception on Windows.  That's ok.
-                pid, status = os.waitpid(any_process, os.WNOHANG)
-                if pid == 0:
-                    break
-            except:
-                break
-
-
-def captured_stdout(func, *args, **kw):
-    orig_stdout = getattr(sys, 'stdout')
-    setattr(sys, 'stdout', StringIO())
-    try:
-        res = func(*args, **kw)
-        sys.stdout.seek(0)
-        return res, sys.stdout.read()
-    finally:
-        setattr(sys, 'stdout', orig_stdout)
-
-
-def unload(name):
-    try:
-        del sys.modules[name]
-    except KeyError:
-        pass

Lib/packaging/tests/test_command_bdist.py

 """Tests for distutils.command.bdist."""
 import os
+from test.support import captured_stdout
 from packaging.command.bdist import bdist, show_formats
-from packaging.tests import unittest, support, captured_stdout
+from packaging.tests import unittest, support
 
 
 class BuildTestCase(support.TempdirManager,
@@ -42,7 +43,9 @@ class BuildTestCase(support.TempdirManager,
                             '%s should take --skip-build from bdist' % name)
 
     def test_show_formats(self):
-        __, stdout = captured_stdout(show_formats)
+        with captured_stdout() as stdout:
+            show_formats()
+        stdout = stdout.getvalue()
 
         # the output should be a header line + one line per format
         num_formats = len(bdist.format_commands)

Lib/packaging/tests/test_command_sdist.py

@@ -17,8 +17,8 @@ from packaging.util import find_executable
 from packaging.errors import PackagingOptionError
 from packaging.command.sdist import sdist, show_formats
 
+from test.support import captured_stdout
 from packaging.tests import support, unittest
-from packaging.tests import captured_stdout
 from packaging.tests.support import requires_zlib
 
 
@@ -234,7 +234,9 @@ class SDistTestCase(support.TempdirManager,
         self.assertIn("'setup.cfg' file not found", warnings[1])
 
     def test_show_formats(self):
-        __, stdout = captured_stdout(show_formats)
+        with captured_stdout() as stdout:
+            show_formats()
+        stdout = stdout.getvalue()
 
         # the output should be a header line + one line per format
         num_formats = len(get_archive_formats())

Lib/packaging/tests/test_dist.py

@@ -8,7 +8,6 @@ import packaging.dist
 from packaging.dist import Distribution
 from packaging.command.cmd import Command
 from packaging.errors import PackagingModuleError, PackagingOptionError
-from packaging.tests import captured_stdout
 from packaging.tests import support, unittest
 from packaging.tests.support import create_distribution, use_command
 from test.support import unload