Add a test to check that FLAGS is deepcopy-able.

There are some unit tests for deepcopy support, but none that ensure the
flags defined by absl behave correctly.

PiperOrigin-RevId: 305146969
Change-Id: Ib46316634aac60142a99a5163753e565148818ef

1 files changed, 9 insertions, 0 deletions

diff --git a/absl/tests/app_test.py b/absl/tests/app_test.py
index d5435d2..9494979 100644
--- a/absl/tests/app_test.py
+++ b/absl/tests/app_test.py
@@ -20,6 +20,7 @@ from __future__ import print_function
 
 import codecs
 import contextlib
+import copy
 import os
 import re
 import subprocess
@@ -313,6 +314,14 @@ class FunctionalTests(absltest.TestCase):
     self.assertIn('during real_main', stdout)
 
 
+class FlagDeepCopyTest(absltest.TestCase):
+  """Make sure absl flags are copy.deepcopy() compatible."""
+
+  def test_deepcopyable(self):
+    copy.deepcopy(FLAGS)
+    # Nothing to assert
+
+
 class FlagValuesExternalizationTest(absltest.TestCase):
   """Test to make sure FLAGS can be serialized out and parsed back in."""