gh-149219: Test `frozendict` in `Lib/test/test_crossinterp.py` (#149220)

diff --git a/Lib/test/test_crossinterp.py b/Lib/test/test_crossinterp.py
index 4e536211168747777e1932a5bdee68b135e9676c..f4bf5a66ad21550aa75ce516c0204286626217f4 100644 (file)
--- a/Lib/test/test_crossinterp.py
+++ b/Lib/test/test_crossinterp.py
@@ -157,6 +157,10 @@ BUILTIN_CONTAINERS = [
     {},
     {1: 7, 2: 8, 3: 9},
     {1: [1], 2: (2,), 3: {3: 4}},
+    # frozendict
+    frozendict(),
+    frozendict({1: 7, 2: 8, 3: 9}),
+    frozendict({1: [1], 2: (2,), 3: {3: 4}, 4: frozendict({5: 6})}),
     # set
     set(),
     {1, 2, 3},