diff --git a/googletest/test/gtest_xml_output_unittest.py b/googletest/test/gtest_xml_output_unittest.py
index 9ba08dfb..3b0abaea 100755
--- a/googletest/test/gtest_xml_output_unittest.py
+++ b/googletest/test/gtest_xml_output_unittest.py
@@ -46,11 +46,16 @@ import gtest_xml_test_utils
 
 GTEST_FILTER_FLAG = '--gtest_filter'
 GTEST_LIST_TESTS_FLAG = '--gtest_list_tests'
-GTEST_OUTPUT_FLAG         = "--gtest_output"
-GTEST_DEFAULT_OUTPUT_FILE = "test_detail.xml"
-GTEST_PROGRAM_NAME = "gtest_xml_output_unittest_"
+GTEST_OUTPUT_FLAG = '--gtest_output'
+GTEST_DEFAULT_OUTPUT_FILE = 'test_detail.xml'
+GTEST_PROGRAM_NAME = 'gtest_xml_output_unittest_'
 
-SUPPORTS_STACK_TRACES = False
+# The environment variables for test sharding.
+TOTAL_SHARDS_ENV_VAR = 'TEST_TOTAL_SHARDS'
+SHARD_INDEX_ENV_VAR = 'TEST_SHARD_INDEX'
+SHARD_STATUS_FILE_ENV_VAR = 'GTEST_SHARD_STATUS_FILE'
+
+SUPPORTS_STACK_TRACES = IS_LINUX
 
 if SUPPORTS_STACK_TRACES:
   STACK_TRACE_TEMPLATE = '\nStack trace:\n*'
@@ -276,7 +281,22 @@ class GTestXMLOutputUnitTest(gtest_xml_test_utils.GTestXMLTestCase):
     self._TestXmlOutput(GTEST_PROGRAM_NAME, EXPECTED_FILTERED_TEST_XML, 0,
                         extra_args=['%s=SuccessfulTest.*' % GTEST_FILTER_FLAG])
 
-  def _GetXmlOutput(self, gtest_prog_name, extra_args, expected_exit_code):
+  def testShardedTestXmlOutput(self):
+    """Verifies XML output when run using multiple shards.
+
+    Runs a test program that executes only one shard and verifies that tests
+    from other shards do not show up in the XML output.
+    """
+
+    self._TestXmlOutput(
+        GTEST_PROGRAM_NAME,
+        EXPECTED_SHARDED_TEST_XML,
+        0,
+        extra_env={SHARD_INDEX_ENV_VAR: '0',
+                   TOTAL_SHARDS_ENV_VAR: '10'})
+
+  def _GetXmlOutput(self, gtest_prog_name, extra_args, extra_env,
+                    expected_exit_code):
     """
     Returns the xml output generated by running the program gtest_prog_name.
     Furthermore, the program's exit code must be expected_exit_code.