Since sysconfig.get_python_inc() now works when building in a

directory other than the source directory, simplify the test code in
test_sysconfig.py.

tests/test_sysconfig.py

@@ -19,27 +19,10 @@ class SysconfigTestCase(unittest.TestCase):
         # test for pythonxx.lib?
 
     def test_get_python_inc(self):
-        # The check for srcdir is copied from Python's setup.py,
-        # and is necessary to make this test pass when building
-        # Python in a directory other than the source directory.
-        (srcdir,) = sysconfig.get_config_vars('srcdir')
-        if not srcdir:
-            inc_dir = sysconfig.get_python_inc()
-        else:
-            # This test is not really a proper test: when building
-            # Python from source, even in the same directory,
-            # we won't be testing the same thing as when running
-            # distutils' tests on an installed Python. Nevertheless,
-            # let's try to do our best: if we are running Python's
-            # unittests from a build directory that is not the source
-            # directory, the normal inc_dir will exist, it will just not
-            # contain anything of interest.
-            inc_dir = sysconfig.get_python_inc()
-            self.assert_(os.path.isdir(inc_dir))
-            # Now test the source location, to make sure Python.h does
-            # exist.
-            inc_dir = os.path.join(os.getcwd(), srcdir, 'Include')
-            inc_dir = os.path.normpath(inc_dir)
+        inc_dir = sysconfig.get_python_inc()
+        # This is not much of a test.  We make sure Python.h exists
+        # in the directory returned by get_python_inc() but we don't know
+        # it is the correct file.
         self.assert_(os.path.isdir(inc_dir), inc_dir)
         python_h = os.path.join(inc_dir, "Python.h")
         self.assert_(os.path.isfile(python_h), python_h)