Issue #14371: Support bzip2 in zipfile module.
Patch by Serhiy Storchaka.
diff --git a/Lib/test/support.py b/Lib/test/support.py
index 6c96501..48e8332 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -40,6 +40,11 @@
 except ImportError:
     zlib = None
 
+try:
+    import bz2
+except ImportError:
+    bz2 = None
+
 __all__ = [
     "Error", "TestFailed", "ResourceDenied", "import_module",
     "verbose", "use_resources", "max_memuse", "record_original_stdout",
@@ -57,7 +62,7 @@
     "get_attribute", "swap_item", "swap_attr", "requires_IEEE_754",
     "TestHandler", "Matcher", "can_symlink", "skip_unless_symlink",
     "import_fresh_module", "requires_zlib", "PIPE_MAX_SIZE", "failfast",
-    "anticipate_failure", "run_with_tz"
+    "anticipate_failure", "run_with_tz", "requires_bz2"
     ]
 
 class Error(Exception):
@@ -506,6 +511,8 @@
 
 requires_zlib = unittest.skipUnless(zlib, 'requires zlib')
 
+requires_bz2 = unittest.skipUnless(bz2, 'requires bz2')
+
 is_jython = sys.platform.startswith('java')
 
 # Filename used for testing