ext: Add pybind rev f4b81b3

Change-Id: I52e4fc9ebf2f59da57d8cf8f3e37cc79598c2f5f
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Hansson <andreas.hansson@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/2229
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Pierre-Yves Péneau <pierre-yves.peneau@lirmm.fr>

1 files changed, 97 insertions, 0 deletions

diff --git a/ext/pybind11/tests/test_keep_alive.py b/ext/pybind11/tests/test_keep_alive.py
new file mode 100644
index 000000000..0cef34658
--- /dev/null
+++ b/ext/pybind11/tests/test_keep_alive.py
@@ -0,0 +1,97 @@
+import gc
+
+
+def test_keep_alive_argument(capture):
+    from pybind11_tests import Parent, Child
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.addChild(Child())
+        gc.collect()
+    assert capture == """
+        Allocating child.
+        Releasing child.
+    """
+    with capture:
+        del p
+        gc.collect()
+    assert capture == "Releasing parent."
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.addChildKeepAlive(Child())
+        gc.collect()
+    assert capture == "Allocating child."
+    with capture:
+        del p
+        gc.collect()
+    assert capture == """
+        Releasing parent.
+        Releasing child.
+    """
+
+
+def test_keep_alive_return_value(capture):
+    from pybind11_tests import Parent
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.returnChild()
+        gc.collect()
+    assert capture == """
+        Allocating child.
+        Releasing child.
+    """
+    with capture:
+        del p
+        gc.collect()
+    assert capture == "Releasing parent."
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.returnChildKeepAlive()
+        gc.collect()
+    assert capture == "Allocating child."
+    with capture:
+        del p
+        gc.collect()
+    assert capture == """
+        Releasing parent.
+        Releasing child.
+    """
+
+
+def test_return_none(capture):
+    from pybind11_tests import Parent
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.returnNullChildKeepAliveChild()
+        gc.collect()
+    assert capture == ""
+    with capture:
+        del p
+        gc.collect()
+    assert capture == "Releasing parent."
+
+    with capture:
+        p = Parent()
+    assert capture == "Allocating parent."
+    with capture:
+        p.returnNullChildKeepAliveParent()
+        gc.collect()
+    assert capture == ""
+    with capture:
+        del p
+        gc.collect()
+    assert capture == "Releasing parent."