Try to narrow down skipped tests

tests/test_buffers.py

@@ -70,7 +70,6 @@ def test_format_descriptor_format_buffer_info_equiv(cpp_name, np_dtype):
             assert not np_array_is_matching
 
 
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_from_python():
     with pytest.raises(RuntimeError) as excinfo:
         m.Matrix(np.array([1, 2, 3]))  # trying to assign a 1D array
@@ -83,23 +82,23 @@ def test_from_python():
         for j in range(m4.cols()):
             assert m3[i, j] == m4[i, j]
 
-    cstats = ConstructorStats.get(m.Matrix)
-    assert cstats.alive() == 1
-    del m3, m4
-    assert cstats.alive() == 0
-    assert cstats.values() == ["2x3 matrix"]
-    assert cstats.copy_constructions == 0
-    # assert cstats.move_constructions >= 0  # Don't invoke any
-    assert cstats.copy_assignments == 0
-    assert cstats.move_assignments == 0
+    if not env.GRAALPY:
+        cstats = ConstructorStats.get(m.Matrix)
+        assert cstats.alive() == 1
+        del m3, m4
+        assert cstats.alive() == 0
+        assert cstats.values() == ["2x3 matrix"]
+        assert cstats.copy_constructions == 0
+        # assert cstats.move_constructions >= 0  # Don't invoke any
+        assert cstats.copy_assignments == 0
+        assert cstats.move_assignments == 0
 
 
 # https://foss.heptapod.net/pypy/pypy/-/issues/2444
 # TODO: fix on recent PyPy
 @pytest.mark.xfail(
     env.PYPY, reason="PyPy 7.3.7 doesn't clear this anymore", strict=False
 )
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_to_python():
     mat = m.Matrix(5, 4)
     assert memoryview(mat).shape == (5, 4)
@@ -120,19 +119,20 @@ def test_to_python():
     mat2[2, 3] = 5
     assert mat2[2, 3] == 5
 
-    cstats = ConstructorStats.get(m.Matrix)
-    assert cstats.alive() == 1
-    del mat
-    pytest.gc_collect()
-    assert cstats.alive() == 1
-    del mat2  # holds a mat reference
-    pytest.gc_collect()
-    assert cstats.alive() == 0
-    assert cstats.values() == ["5x4 matrix"]
-    assert cstats.copy_constructions == 0
-    # assert cstats.move_constructions >= 0  # Don't invoke any
-    assert cstats.copy_assignments == 0
-    assert cstats.move_assignments == 0
+    if not env.GRAALPY:
+        cstats = ConstructorStats.get(m.Matrix)
+        assert cstats.alive() == 1
+        del mat
+        pytest.gc_collect()
+        assert cstats.alive() == 1
+        del mat2  # holds a mat reference
+        pytest.gc_collect()
+        assert cstats.alive() == 0
+        assert cstats.values() == ["5x4 matrix"]
+        assert cstats.copy_constructions == 0
+        # assert cstats.move_constructions >= 0  # Don't invoke any
+        assert cstats.copy_assignments == 0
+        assert cstats.move_assignments == 0
 
 
 def test_inherited_protocol():

tests/test_cpp_conduit.py

@@ -7,7 +7,7 @@
 import home_planet_very_lonely_traveler
 import pytest
 
-import env  # noqa: F401
+import env
 from pybind11_tests import cpp_conduit as home_planet
 
 
@@ -21,15 +21,17 @@ def test_premium_traveler_getattr_actually_exists():
     assert t_h.secret_name == "PremiumTraveler GetAttr: secret_name points: 7"
 
 
-@pytest.mark.xfail("env.GRAALPY", reason="TODO should get fixed on GraalPy side")
 def test_call_cpp_conduit_success():
     t_h = home_planet.Traveler("home")
     cap = t_h._pybind11_conduit_v1_(
         home_planet.PYBIND11_PLATFORM_ABI_ID,
         home_planet.cpp_type_info_capsule_Traveler,
         b"raw_pointer_ephemeral",
     )
-    assert cap.__class__.__name__ == "PyCapsule"
+    assert cap.__class__.__name__ == "PyCapsule" or (
+        # Note: this will become unnecessary in the next GraalPy release
+        env.GRAALPY and cap.__class__.__name__ == "capsule"
+    )
 
 
 def test_call_cpp_conduit_platform_abi_id_mismatch():

tests/test_methods_and_attributes.py

@@ -4,7 +4,7 @@
 
 import pytest
 
-import env  # noqa: F401
+import env
 from pybind11_tests import ConstructorStats
 from pybind11_tests import methods_and_attributes as m
 
@@ -19,7 +19,6 @@
 )
 
 
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_methods_and_attributes():
     instance1 = m.ExampleMandA()
     instance2 = m.ExampleMandA(32)
@@ -69,16 +68,17 @@ def test_methods_and_attributes():
     instance1.value = 100
     assert str(instance1) == "ExampleMandA[value=100]"
 
-    cstats = ConstructorStats.get(m.ExampleMandA)
-    assert cstats.alive() == 2
-    del instance1, instance2
-    assert cstats.alive() == 0
-    assert cstats.values() == ["32"]
-    assert cstats.default_constructions == 1
-    assert cstats.copy_constructions == 2
-    assert cstats.move_constructions >= 2
-    assert cstats.copy_assignments == 0
-    assert cstats.move_assignments == 0
+    if not env.GRAALPY:
+        cstats = ConstructorStats.get(m.ExampleMandA)
+        assert cstats.alive() == 2
+        del instance1, instance2
+        assert cstats.alive() == 0
+        assert cstats.values() == ["32"]
+        assert cstats.default_constructions == 1
+        assert cstats.copy_constructions == 2
+        assert cstats.move_constructions >= 2
+        assert cstats.copy_assignments == 0
+        assert cstats.move_assignments == 0
 
 
 def test_copy_method():
@@ -296,7 +296,6 @@ def test_property_rvalue_policy():
 
 # https://foss.heptapod.net/pypy/pypy/-/issues/2447
 @pytest.mark.xfail("env.PYPY")
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_dynamic_attributes():
     instance = m.DynamicClass()
     assert not hasattr(instance, "foo")
@@ -314,14 +313,17 @@ def test_dynamic_attributes():
     assert not hasattr(instance, "foo")
     assert hasattr(instance, "bar")
 
-    with pytest.raises(TypeError) as excinfo:
-        instance.__dict__ = []
-    assert str(excinfo.value) == "__dict__ must be set to a dictionary, not a 'list'"
+    if not env.GRAALPY:
+        with pytest.raises(TypeError) as excinfo:
+            instance.__dict__ = []
+        assert (
+            str(excinfo.value) == "__dict__ must be set to a dictionary, not a 'list'"
+        )
 
-    cstats = ConstructorStats.get(m.DynamicClass)
-    assert cstats.alive() == 1
-    del instance
-    assert cstats.alive() == 0
+        cstats = ConstructorStats.get(m.DynamicClass)
+        assert cstats.alive() == 1
+        del instance
+        assert cstats.alive() == 0
 
     # Derived classes should work as well
     class PythonDerivedDynamicClass(m.DynamicClass):
@@ -332,9 +334,10 @@ class PythonDerivedDynamicClass(m.DynamicClass):
         derived.foobar = 100
         assert derived.foobar == 100
 
-        assert cstats.alive() == 1
-        del derived
-        assert cstats.alive() == 0
+        if not env.GRAALPY:
+            assert cstats.alive() == 1
+            del derived
+            assert cstats.alive() == 0
 
 
 # https://foss.heptapod.net/pypy/pypy/-/issues/2447

tests/test_modules.py

@@ -25,7 +25,6 @@ def test_nested_modules():
     assert ms.submodule_func() == "submodule_func()"
 
 
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_reference_internal():
     b = ms.B()
     assert str(b.get_a1()) == "A[1]"
@@ -40,24 +39,25 @@ def test_reference_internal():
     assert str(b.get_a2()) == "A[43]"
     assert str(b.a2) == "A[43]"
 
-    astats, bstats = ConstructorStats.get(ms.A), ConstructorStats.get(ms.B)
-    assert astats.alive() == 2
-    assert bstats.alive() == 1
-    del b
-    assert astats.alive() == 0
-    assert bstats.alive() == 0
-    assert astats.values() == ["1", "2", "42", "43"]
-    assert bstats.values() == []
-    assert astats.default_constructions == 0
-    assert bstats.default_constructions == 1
-    assert astats.copy_constructions == 0
-    assert bstats.copy_constructions == 0
-    # assert astats.move_constructions >= 0  # Don't invoke any
-    # assert bstats.move_constructions >= 0  # Don't invoke any
-    assert astats.copy_assignments == 2
-    assert bstats.copy_assignments == 0
-    assert astats.move_assignments == 0
-    assert bstats.move_assignments == 0
+    if not env.GRAALPY:
+        astats, bstats = ConstructorStats.get(ms.A), ConstructorStats.get(ms.B)
+        assert astats.alive() == 2
+        assert bstats.alive() == 1
+        del b
+        assert astats.alive() == 0
+        assert bstats.alive() == 0
+        assert astats.values() == ["1", "2", "42", "43"]
+        assert bstats.values() == []
+        assert astats.default_constructions == 0
+        assert bstats.default_constructions == 1
+        assert astats.copy_constructions == 0
+        assert bstats.copy_constructions == 0
+        # assert astats.move_constructions >= 0  # Don't invoke any
+        # assert bstats.move_constructions >= 0  # Don't invoke any
+        assert astats.copy_assignments == 2
+        assert bstats.copy_assignments == 0
+        assert astats.move_assignments == 0
+        assert bstats.move_assignments == 0
 
 
 def test_importing():

tests/test_multiple_inheritance.py

@@ -2,7 +2,7 @@
 
 import pytest
 
-import env  # noqa: F401
+import env
 from pybind11_tests import ConstructorStats
 from pybind11_tests import multiple_inheritance as m
 
@@ -272,16 +272,16 @@ def test_mi_dynamic_attributes():
         assert d.dynamic == 1
 
 
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_mi_unaligned_base():
     """Returning an offset (non-first MI) base class pointer should recognize the instance"""
 
     n_inst = ConstructorStats.detail_reg_inst()
 
     c = m.I801C()
     d = m.I801D()
-    # + 4 below because we have the two instances, and each instance has offset base I801B2
-    assert ConstructorStats.detail_reg_inst() == n_inst + 4
+    if not env.GRAALPY:
+        # + 4 below because we have the two instances, and each instance has offset base I801B2
+        assert ConstructorStats.detail_reg_inst() == n_inst + 4
     b1c = m.i801b1_c(c)
     assert b1c is c
     b2c = m.i801b2_c(c)
@@ -291,14 +291,14 @@ def test_mi_unaligned_base():
     b2d = m.i801b2_d(d)
     assert b2d is d
 
-    assert ConstructorStats.detail_reg_inst() == n_inst + 4  # no extra instances
-    del c, b1c, b2c
-    assert ConstructorStats.detail_reg_inst() == n_inst + 2
-    del d, b1d, b2d
-    assert ConstructorStats.detail_reg_inst() == n_inst
+    if not env.GRAALPY:
+        assert ConstructorStats.detail_reg_inst() == n_inst + 4  # no extra instances
+        del c, b1c, b2c
+        assert ConstructorStats.detail_reg_inst() == n_inst + 2
+        del d, b1d, b2d
+        assert ConstructorStats.detail_reg_inst() == n_inst
 
 
-@pytest.mark.skipif("env.GRAALPY", reason="Cannot reliably trigger GC")
 def test_mi_base_return():
     """Tests returning an offset (non-first MI) base class pointer to a derived instance"""
 
@@ -314,7 +314,8 @@ def test_mi_base_return():
     assert d1.a == 1
     assert d1.b == 2
 
-    assert ConstructorStats.detail_reg_inst() == n_inst + 4
+    if not env.GRAALPY:
+        assert ConstructorStats.detail_reg_inst() == n_inst + 4
 
     c2 = m.i801c_b2()
     assert type(c2) is m.I801C
@@ -326,12 +327,13 @@ def test_mi_base_return():
     assert d2.a == 1
     assert d2.b == 2
 
-    assert ConstructorStats.detail_reg_inst() == n_inst + 8
+    if not env.GRAALPY:
+        assert ConstructorStats.detail_reg_inst() == n_inst + 8
 
-    del c2
-    assert ConstructorStats.detail_reg_inst() == n_inst + 6
-    del c1, d1, d2
-    assert ConstructorStats.detail_reg_inst() == n_inst
+        del c2
+        assert ConstructorStats.detail_reg_inst() == n_inst + 6
+        del c1, d1, d2
+        assert ConstructorStats.detail_reg_inst() == n_inst
 
     # Returning an unregistered derived type with a registered base; we won't
     # pick up the derived type, obviously, but should still work (as an object