initial import of the packaging package in the standard library

Lib/packaging/command/test.py

@@ -0,0 +1,81 @@
+"""Run the project's test suite."""
+
+import os
+import sys
+import logging
+import unittest
+
+from packaging import logger
+from packaging.command.cmd import Command
+from packaging.database import get_distribution
+from packaging.errors import PackagingOptionError
+from packaging.util import resolve_name
+
+
+class test(Command):
+
+    description = "run the project's test suite"
+
+    user_options = [
+        ('suite=', 's',
+         "test suite to run (for example: 'some_module.test_suite')"),
+        ('runner=', None,
+         "test runner to be called."),
+        ('tests-require=', None,
+         "list of distributions required to run the test suite."),
+    ]
+
+    def initialize_options(self):
+        self.suite = None
+        self.runner = None
+        self.tests_require = []
+
+    def finalize_options(self):
+        self.build_lib = self.get_finalized_command("build").build_lib
+        for requirement in self.tests_require:
+            if get_distribution(requirement) is None:
+                logger.warning("test dependency %s is not installed, "
+                               "tests may fail", requirement)
+        if (not self.suite and not self.runner and
+            self.get_ut_with_discovery() is None):
+            raise PackagingOptionError(
+                "no test discovery available, please give a 'suite' or "
+                "'runner' option or install unittest2")
+
+    def get_ut_with_discovery(self):
+        if hasattr(unittest.TestLoader, "discover"):
+            return unittest
+        else:
+            try:
+                import unittest2
+                return unittest2
+            except ImportError:
+                return None
+
+    def run(self):
+        prev_syspath = sys.path[:]
+        try:
+            # build release
+            build = self.get_reinitialized_command('build')
+            self.run_command('build')
+            sys.path.insert(0, build.build_lib)
+
+            # Temporary kludge until we remove the verbose arguments and use
+            # logging everywhere
+            logger = logging.getLogger('packaging')
+            verbose = logger.getEffectiveLevel() >= logging.DEBUG
+            verbosity = verbose + 1
+
+            # run the tests
+            if self.runner:
+                resolve_name(self.runner)()
+            elif self.suite:
+                runner = unittest.TextTestRunner(verbosity=verbosity)
+                runner.run(resolve_name(self.suite)())
+            elif self.get_ut_with_discovery():
+                ut = self.get_ut_with_discovery()
+                test_suite = ut.TestLoader().discover(os.curdir)
+                runner = ut.TextTestRunner(verbosity=verbosity)
+                runner.run(test_suite)
+        finally:
+            sys.path[:] = prev_syspath