Issue #15494: test.support is now a package rather than a module

Also including this change in 3.3 to help avoid spurious conflicts
between the two most active branches.

(Initial patch by Indra Talip)

Lib/test/support/__init__.py

@@ -787,9 +787,12 @@ if hasattr(os, "umask"):
         finally:
             os.umask(oldmask)
 
+# TEST_HOME refers to the top level directory of the "test" package
+# that contains Python's regression test suite
+TEST_HOME = os.path.dirname(os.path.abspath(__file__))
 
-def findfile(file, here=__file__, subdir=None):
-    """Try to find a file on sys.path and the working directory.  If it is not
+def findfile(file, here=TEST_HOME, subdir=None):
+    """Try to find a file on sys.path or in the test directory.  If it is not
     found the argument passed to the function is returned (this does not
     necessarily signal failure; could still be the legitimate path)."""
     if os.path.isabs(file):

Lib/test/test_linecache.py

@@ -11,7 +11,7 @@ INVALID_NAME = '!@$)(!@#_1'
 EMPTY = ''
 TESTS = 'inspect_fodder inspect_fodder2 mapping_tests'
 TESTS = TESTS.split()
-TEST_PATH = os.path.dirname(support.__file__)
+TEST_PATH = os.path.dirname(__file__)
 MODULES = "linecache abc".split()
 MODULE_PATH = os.path.dirname(FILENAME)
 

Misc/ACKS

@@ -1202,6 +1202,7 @@ Thenault Sylvain
 Péter Szabó
 Amir Szekely
 Arfrever Frehtes Taifersar Arahesis
+Indra Talip
 Neil Tallim
 Geoff Talvola
 Musashi Tamura

Misc/NEWS

@@ -222,6 +222,9 @@ IDLE
 Tests
 -----
 
+- Issue #15494: test.support is now a package rather than a module (Initial
+  patch by Indra Talip)
+
 - Issue #17944: test_zipfile now discoverable and uses subclassing to
   generate tests for different compression types.  Fixed a bug with skipping
   some tests due to use of exhausted iterators.