tests/stress: Add test to verify the GC can trace nested objects.

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/stress/gc_trace.py b/tests/stress/gc_trace.py
new file mode 100644
index 000000000..72dc7b627
--- /dev/null
+++ b/tests/stress/gc_trace.py
@@ -0,0 +1,17 @@
+# test that the GC can trace nested objects
+
+try:
+    import gc
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+# test a big shallow object pointing to many unique objects
+lst = [[i] for i in range(200)]
+gc.collect()
+print(lst)
+
+# test a deep object
+lst = [[[[[(i, j, k, l)] for i in range(3)] for j in range(3)] for k in range(3)] for l in range(3)]
+gc.collect()
+print(lst)