1 files changed, 35 insertions, 0 deletions
diff --git a/tests/test_memory_leaks.py b/tests/test_memory_leaks.py
new file mode 100644
index 0000000..31ea7c8
--- /dev/null
+++ b/tests/test_memory_leaks.py
@@ -0,0 +1,35 @@
+from __future__ import annotations
+
+import gc
+
+import pytest
+
+from prompt_toolkit.shortcuts.prompt import PromptSession
+
+
+def _count_prompt_session_instances() -> int:
+    # Run full GC collection first.
+    gc.collect()
+
+    # Count number of remaining referenced `PromptSession` instances.
+    objects = gc.get_objects()
+    return len([obj for obj in objects if isinstance(obj, PromptSession)])
+
+
+# Fails in GitHub CI, probably due to GC differences.
+@pytest.mark.xfail(reason="Memory leak testing fails in GitHub CI.")
+def test_prompt_session_memory_leak() -> None:
+    before_count = _count_prompt_session_instances()
+
+    # Somehow in CI/CD, the before_count is > 0
+    assert before_count == 0
+
+    p = PromptSession()
+
+    after_count = _count_prompt_session_instances()
+    assert after_count == before_count + 1
+
+    del p
+
+    after_delete_count = _count_prompt_session_instances()
+    assert after_delete_count == before_count