pytorch/test/export/test_torchbind.py
ydwu4 c77352b5cc Add torch._library.register_fake_class to fakify torchBind class (#122622)
This PR only adds abstract class registration logic without touching existing tests so they still trace with real script object. The added tests are only for registration APIs and test error messages.

Our design is that the abstract implementation should be in Python. This is much better in terms of usability. But this also has implications for custom op that takes script object as input, which is detailed later in this stack.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/122622
Approved by: https://github.com/zou3519
ghstack dependencies: #122619, #122620, #122621
2024-04-02 23:52:17 +00:00

628 lines
26 KiB
Python

# Owner(s): ["oncall: export"]
import unittest
import torch
import torch.utils._pytree as pytree
from torch._higher_order_ops.torchbind import enable_torchbind_tracing
from torch._library.fake_class_registry import FakeScriptObject
from torch.export import export
from torch.export._trace import _export
from torch.fx.experimental.proxy_tensor import make_fx
from torch.testing._internal.common_utils import (
find_library_location,
instantiate_parametrized_tests,
IS_FBCODE,
IS_MACOS,
IS_SANDCASTLE,
IS_WINDOWS,
parametrize,
run_tests,
skipIfTorchDynamo,
TestCase,
)
from torch.testing._internal.torchbind_impls import register_fake_operators
def load_torchbind_test_lib():
if IS_SANDCASTLE or IS_FBCODE:
torch.ops.load_library("//caffe2/test/cpp/jit:test_custom_class_registrations")
elif IS_MACOS:
raise unittest.SkipTest("non-portable load_library call used in test")
else:
lib_file_path = find_library_location("libtorchbind_test.so")
if IS_WINDOWS:
lib_file_path = find_library_location("torchbind_test.dll")
torch.ops.load_library(str(lib_file_path))
register_fake_operators()
@skipIfTorchDynamo("torchbind not supported with dynamo yet")
class TestExportTorchbind(TestCase):
def setUp(self):
load_torchbind_test_lib()
@torch._library.register_fake_class("_TorchScriptTesting::_Foo")
class FakeFoo:
def __init__(self, x: int, y: int):
self.x = x
self.y = y
@classmethod
def from_real(cls, foo):
(x, y), _ = foo.__getstate__()
return cls(x, y)
def add_tensor(self, z):
return (self.x + self.y) * z
test = self
test.tq_push_counter = 0
test.tq_pop_counter = 0
test.tq_size_counter = 0
@torch._library.register_fake_class("_TorchScriptTesting::_TensorQueue")
class FakeTensorQueue:
def __init__(self, q):
self.queue = q
@classmethod
def from_real(cls, real_tq):
ctx = torch.library.get_ctx()
fake_queue = [ctx.to_fake_tensor(t) for t in real_tq.get_raw_queue()]
return cls(fake_queue)
def push(self, x):
test.tq_push_counter += 1
self.queue.append(x)
def pop(self):
test.tq_pop_counter += 1
return self.queue.pop(0)
def size(self):
test.tq_size_counter += 1
return len(self.queue)
def tearDown(self):
torch._library.fake_class_registry.deregister_fake_class(
"_TorchScriptTesting::_Foo"
)
torch._library.fake_class_registry.deregister_fake_class(
"_TorchScriptTesting::_TensorQueue"
)
def _assertEqualSkipScriptObject(self, exp, actual):
flat_exp = pytree.tree_leaves(exp)
flat_actual = pytree.tree_leaves(actual)
self.assertEqual(len(flat_exp), len(flat_actual))
for a, b in zip(flat_exp, flat_actual):
if isinstance(a, torch.ScriptObject) and isinstance(b, torch.ScriptObject):
continue
self.assertEqual(a, b)
def _test_export_same_as_eager(
self, f, args, kwargs=None, strict=True, pre_dispatch=False
):
kwargs = kwargs or {}
def export_wrapper(f, args, kwargs, strcit, pre_dispatch):
with enable_torchbind_tracing():
if pre_dispatch:
exported_program = _export(
f, args, kwargs, strict=strict, pre_dispatch=True
)
else:
exported_program = export(f, args, kwargs, strict=strict)
return exported_program
exported_program = export_wrapper(f, args, kwargs, strict, pre_dispatch)
reversed_kwargs = {key: kwargs[key] for key in reversed(kwargs)}
unlifted = exported_program.module()
exp = f(*args, **kwargs)
self.assertEqual(unlifted(*args, **kwargs), exp)
self.assertEqual(
unlifted(*args, **reversed_kwargs),
exp,
)
# check re-tracing
retraced_ep = export_wrapper(unlifted, args, kwargs, strict, pre_dispatch)
self.assertEqual(retraced_ep.module()(*args, **kwargs), exp)
return exported_program
@parametrize("pre_dispatch", [True, False])
def test_none(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x, n):
return x + self.attr.add_tensor(x)
ep = self._test_export_same_as_eager(
MyModule(),
(torch.ones(2, 3), None),
strict=False,
pre_dispatch=pre_dispatch,
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0, arg_1):
arg0_1, arg1_1, = fx_pytree.tree_flatten_spec(([arg_0, arg_1], {}), self._in_spec)
attr_1 = self.attr
call_torchbind = torch.ops.higher_order.call_torchbind(attr_1, 'add_tensor', arg0_1); attr_1 = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return pytree.tree_unflatten((add,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, attr, arg0_1, arg1_1):
call_torchbind = torch.ops.higher_order.call_torchbind(attr, 'add_tensor', arg0_1); attr = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return (add,)""",
)
@parametrize("pre_dispatch", [True, False])
def test_attribute(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x):
return x + self.attr.add_tensor(x)
ep = self._test_export_same_as_eager(
MyModule(), (torch.ones(2, 3),), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0):
arg0_1, = fx_pytree.tree_flatten_spec(([arg_0], {}), self._in_spec)
attr_1 = self.attr
call_torchbind = torch.ops.higher_order.call_torchbind(attr_1, 'add_tensor', arg0_1); attr_1 = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return pytree.tree_unflatten((add,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, attr, arg0_1):
call_torchbind = torch.ops.higher_order.call_torchbind(attr, 'add_tensor', arg0_1); attr = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return (add,)""",
)
@parametrize("pre_dispatch", [True, False])
def test_attribute_as_custom_op_argument(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x):
return x + torch.ops._TorchScriptTesting.takes_foo(self.attr, x)
ep = self._test_export_same_as_eager(
MyModule(), (torch.ones(2, 3),), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0):
arg1_1, = fx_pytree.tree_flatten_spec(([arg_0], {}), self._in_spec)
attr_1 = self.attr
takes_foo_default = torch.ops._TorchScriptTesting.takes_foo.default(attr_1, arg1_1); attr_1 = None
add = torch.ops.aten.add.Tensor(arg1_1, takes_foo_default); arg1_1 = takes_foo_default = None
return pytree.tree_unflatten((add,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, attr, arg1_1):
with_effects = torch._higher_order_ops.effects.with_effects(arg0_1, torch.ops._TorchScriptTesting.takes_foo.default, attr, arg1_1); arg0_1 = attr = None
getitem = with_effects[0]
getitem_1 = with_effects[1]; with_effects = None
add = torch.ops.aten.add.Tensor(arg1_1, getitem_1); arg1_1 = getitem_1 = None
return (getitem, add)""", # noqa: B950
)
@parametrize("pre_dispatch", [True, False])
def test_input(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
def forward(self, x, cc):
return x + cc.add_tensor(x)
cc = torch.classes._TorchScriptTesting._Foo(10, 20)
ep = self._test_export_same_as_eager(
MyModule(), (torch.ones(2, 3), cc), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0, arg_1):
arg0_1, arg1_1, = fx_pytree.tree_flatten_spec(([arg_0, arg_1], {}), self._in_spec)
call_torchbind = torch.ops.higher_order.call_torchbind(arg1_1, 'add_tensor', arg0_1); arg1_1 = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return pytree.tree_unflatten((add,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, arg1_1):
call_torchbind = torch.ops.higher_order.call_torchbind(arg1_1, 'add_tensor', arg0_1); arg1_1 = None
add = torch.ops.aten.add.Tensor(arg0_1, call_torchbind); arg0_1 = call_torchbind = None
return (add,)""",
)
@parametrize("pre_dispatch", [True, False])
def test_input_as_custom_op_argument(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
def forward(self, x, cc):
return x + torch.ops._TorchScriptTesting.takes_foo(cc, x)
cc = torch.classes._TorchScriptTesting._Foo(10, 20)
ep = self._test_export_same_as_eager(
MyModule(), (torch.ones(2, 3), cc), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0, arg_1):
arg1_1, arg2_1, = fx_pytree.tree_flatten_spec(([arg_0, arg_1], {}), self._in_spec)
takes_foo_default = torch.ops._TorchScriptTesting.takes_foo.default(arg2_1, arg1_1); arg2_1 = None
add = torch.ops.aten.add.Tensor(arg1_1, takes_foo_default); arg1_1 = takes_foo_default = None
return pytree.tree_unflatten((add,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, arg1_1, arg2_1):
with_effects = torch._higher_order_ops.effects.with_effects(arg0_1, torch.ops._TorchScriptTesting.takes_foo.default, arg2_1, arg1_1); arg0_1 = arg2_1 = None
getitem = with_effects[0]
getitem_1 = with_effects[1]; with_effects = None
add = torch.ops.aten.add.Tensor(arg1_1, getitem_1); arg1_1 = getitem_1 = None
return (getitem, add)""", # noqa: B950
)
@parametrize("pre_dispatch", [True, False])
def test_unlift_custom_obj(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x):
a = torch.ops._TorchScriptTesting.takes_foo(self.attr, x)
b = torch.ops._TorchScriptTesting.takes_foo(self.attr, a)
return x + b
input = torch.ones(2, 3)
ep = self._test_export_same_as_eager(
MyModule(), (input,), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0):
arg1_1, = fx_pytree.tree_flatten_spec(([arg_0], {}), self._in_spec)
attr_1 = self.attr
takes_foo_default_1 = torch.ops._TorchScriptTesting.takes_foo.default(attr_1, arg1_1)
takes_foo_default = torch.ops._TorchScriptTesting.takes_foo.default(attr_1, takes_foo_default_1); attr_1 = takes_foo_default_1 = None
add = torch.ops.aten.add.Tensor(arg1_1, takes_foo_default); arg1_1 = takes_foo_default = None
return pytree.tree_unflatten((add,), self._out_spec)""", # noqa: B950
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, attr, arg1_1):
with_effects = torch._higher_order_ops.effects.with_effects(arg0_1, torch.ops._TorchScriptTesting.takes_foo.default, attr, arg1_1); arg0_1 = None
getitem = with_effects[0]
getitem_1 = with_effects[1]; with_effects = None
with_effects_1 = torch._higher_order_ops.effects.with_effects(getitem, torch.ops._TorchScriptTesting.takes_foo.default, attr, getitem_1); getitem = attr = getitem_1 = None
getitem_2 = with_effects_1[0]
getitem_3 = with_effects_1[1]; with_effects_1 = None
add = torch.ops.aten.add.Tensor(arg1_1, getitem_3); arg1_1 = getitem_3 = None
return (getitem_2, add)""", # noqa: B950
)
@parametrize("pre_dispatch", [True, False])
def test_custom_obj_list_out(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x):
a = torch.ops._TorchScriptTesting.takes_foo_list_return(self.attr, x)
y = a[0] + a[1] + a[2]
b = torch.ops._TorchScriptTesting.takes_foo(self.attr, y)
return x + b
input = torch.ones(2, 3)
ep = self._test_export_same_as_eager(
MyModule(), (input,), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0):
arg1_1, = fx_pytree.tree_flatten_spec(([arg_0], {}), self._in_spec)
attr_1 = self.attr
takes_foo_list_return_default = torch.ops._TorchScriptTesting.takes_foo_list_return.default(attr_1, arg1_1)
getitem_2 = takes_foo_list_return_default[0]
getitem_3 = takes_foo_list_return_default[1]
getitem_4 = takes_foo_list_return_default[2]; takes_foo_list_return_default = None
add = torch.ops.aten.add.Tensor(getitem_2, getitem_3); getitem_2 = getitem_3 = None
add_1 = torch.ops.aten.add.Tensor(add, getitem_4); add = getitem_4 = None
takes_foo_default = torch.ops._TorchScriptTesting.takes_foo.default(attr_1, add_1); attr_1 = add_1 = None
add_2 = torch.ops.aten.add.Tensor(arg1_1, takes_foo_default); arg1_1 = takes_foo_default = None
return pytree.tree_unflatten((add_2,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, attr, arg1_1):
with_effects = torch._higher_order_ops.effects.with_effects(arg0_1, torch.ops._TorchScriptTesting.takes_foo_list_return.default, attr, arg1_1); arg0_1 = None
getitem = with_effects[0]
getitem_1 = with_effects[1]; with_effects = None
getitem_2 = getitem_1[0]
getitem_3 = getitem_1[1]
getitem_4 = getitem_1[2]; getitem_1 = None
add = torch.ops.aten.add.Tensor(getitem_2, getitem_3); getitem_2 = getitem_3 = None
add_1 = torch.ops.aten.add.Tensor(add, getitem_4); add = getitem_4 = None
with_effects_1 = torch._higher_order_ops.effects.with_effects(getitem, torch.ops._TorchScriptTesting.takes_foo.default, attr, add_1); getitem = attr = add_1 = None
getitem_5 = with_effects_1[0]
getitem_6 = with_effects_1[1]; with_effects_1 = None
add_2 = torch.ops.aten.add.Tensor(arg1_1, getitem_6); arg1_1 = getitem_6 = None
return (getitem_5, add_2)""", # noqa: B950
)
@parametrize("pre_dispatch", [True, False])
def test_custom_obj_tuple_out(self, pre_dispatch):
class MyModule(torch.nn.Module):
def __init__(self):
super().__init__()
self.attr = torch.classes._TorchScriptTesting._Foo(10, 20)
def forward(self, x):
a = torch.ops._TorchScriptTesting.takes_foo_tuple_return(self.attr, x)
y = a[0] + a[1]
b = torch.ops._TorchScriptTesting.takes_foo(self.attr, y)
return x + b
input = torch.ones(2, 3)
ep = self._test_export_same_as_eager(
MyModule(), (input,), strict=False, pre_dispatch=pre_dispatch
)
self.assertExpectedInline(
ep.module().code.strip(),
"""\
def forward(self, arg_0):
arg1_1, = fx_pytree.tree_flatten_spec(([arg_0], {}), self._in_spec)
attr_1 = self.attr
takes_foo_tuple_return_default = torch.ops._TorchScriptTesting.takes_foo_tuple_return.default(attr_1, arg1_1)
getitem_1 = takes_foo_tuple_return_default[0]
getitem_2 = takes_foo_tuple_return_default[1]; takes_foo_tuple_return_default = None
add = torch.ops.aten.add.Tensor(getitem_1, getitem_2); getitem_1 = getitem_2 = None
takes_foo_default = torch.ops._TorchScriptTesting.takes_foo.default(attr_1, add); attr_1 = add = None
add_1 = torch.ops.aten.add.Tensor(arg1_1, takes_foo_default); arg1_1 = takes_foo_default = None
return pytree.tree_unflatten((add_1,), self._out_spec)""",
)
self.assertExpectedInline(
ep.graph_module.code.strip(),
"""\
def forward(self, arg0_1, attr, arg1_1):
with_effects = torch._higher_order_ops.effects.with_effects(arg0_1, torch.ops._TorchScriptTesting.takes_foo_tuple_return.default, attr, arg1_1); arg0_1 = None
getitem = with_effects[0]
getitem_1 = with_effects[1]
getitem_2 = with_effects[2]; with_effects = None
add = torch.ops.aten.add.Tensor(getitem_1, getitem_2); getitem_1 = getitem_2 = None
with_effects_1 = torch._higher_order_ops.effects.with_effects(getitem, torch.ops._TorchScriptTesting.takes_foo.default, attr, add); getitem = attr = add = None
getitem_3 = with_effects_1[0]
getitem_4 = with_effects_1[1]; with_effects_1 = None
add_1 = torch.ops.aten.add.Tensor(arg1_1, getitem_4); arg1_1 = getitem_4 = None
return (getitem_3, add_1)""", # noqa: B950
)
@parametrize("make_fx_tracing_mode", ["fake", "symbolic"])
def test_make_fx_tensor_queue_methods(self, make_fx_tracing_mode):
test = self
class Model(torch.nn.Module):
def __init__(self):
super().__init__()
self.linear = torch.nn.Linear(3, 2)
self.check_tq_is_fake = True
def forward(self, tq, x):
if self.check_tq_is_fake:
test.assertTrue(isinstance(tq, FakeScriptObject))
tq.push(x.cos())
tq.push(x.sin())
x_cos = tq.pop() + tq.size()
x_sin = tq.pop() - tq.size()
return x_sin, x_cos, tq
mod = Model()
tq = torch.classes._TorchScriptTesting._TensorQueue(
torch.empty(
0,
).fill_(-1)
)
tq1 = torch.classes._TorchScriptTesting._TensorQueue(
torch.empty(
0,
).fill_(-1)
)
x = torch.ones(2, 3)
gm = make_fx(mod, tracing_mode=make_fx_tracing_mode)(tq, x)
self.assertEqual(self.tq_push_counter, 2)
self.assertEqual(self.tq_pop_counter, 2)
self.assertEqual(self.tq_size_counter, 2)
self.assertEqual(tq.size(), 0)
self.assertExpectedInline(
gm.code.strip("\n"),
"""\
def forward(self, arg0_1, arg1_1):
cos = torch.ops.aten.cos.default(arg1_1)
call_torchbind = torch.ops.higher_order.call_torchbind(arg0_1, 'push', cos); cos = None
sin = torch.ops.aten.sin.default(arg1_1); arg1_1 = None
call_torchbind_1 = torch.ops.higher_order.call_torchbind(arg0_1, 'push', sin); sin = None
call_torchbind_2 = torch.ops.higher_order.call_torchbind(arg0_1, 'pop')
call_torchbind_3 = torch.ops.higher_order.call_torchbind(arg0_1, 'size')
add = torch.ops.aten.add.Tensor(call_torchbind_2, 1); call_torchbind_2 = None
call_torchbind_4 = torch.ops.higher_order.call_torchbind(arg0_1, 'pop')
call_torchbind_5 = torch.ops.higher_order.call_torchbind(arg0_1, 'size')
sub = torch.ops.aten.sub.Tensor(call_torchbind_4, 0); call_torchbind_4 = None
return (sub, add, arg0_1)
""",
)
mod.check_tq_is_fake = False
self._assertEqualSkipScriptObject(gm(tq, x), mod(tq1, x))
@parametrize("make_fx_tracing_mode", ["fake", "symbolic"])
def test_make_fx_tensor_queue_methods_fakify_internal_states(
self, make_fx_tracing_mode
):
test = self
class Model(torch.nn.Module):
def __init__(self):
super().__init__()
self.linear = torch.nn.Linear(3, 2)
self.check_tq_is_fake = True
self.current_test = test
def forward(self, tq, x):
if self.check_tq_is_fake:
self.current_test.assertTrue(isinstance(tq, FakeScriptObject))
x_cos = tq.pop() + tq.size() + x
x_sin = tq.pop() - tq.size() + x
return x_sin, x_cos, tq
mod = Model()
tq = torch.classes._TorchScriptTesting._TensorQueue(
torch.empty(
0,
).fill_(-1)
)
tq1 = torch.classes._TorchScriptTesting._TensorQueue(
torch.empty(
0,
).fill_(-1)
)
for _ in range(2):
tq.push(torch.ones(2, 3))
tq1.push(torch.ones(2, 3))
x = torch.ones(2, 3)
prev_size = tq.size()
gm = make_fx(mod, tracing_mode=make_fx_tracing_mode)(tq, x)
self.assertEqual(self.tq_push_counter, 0)
self.assertEqual(self.tq_pop_counter, 2)
self.assertEqual(self.tq_size_counter, 2)
self.assertEqual(tq.size(), prev_size)
self.assertExpectedInline(
gm.code.strip("\n"),
"""\
def forward(self, arg0_1, arg1_1):
call_torchbind = torch.ops.higher_order.call_torchbind(arg0_1, 'pop')
call_torchbind_1 = torch.ops.higher_order.call_torchbind(arg0_1, 'size')
add = torch.ops.aten.add.Tensor(call_torchbind, 1); call_torchbind = None
add_1 = torch.ops.aten.add.Tensor(add, arg1_1); add = None
call_torchbind_2 = torch.ops.higher_order.call_torchbind(arg0_1, 'pop')
call_torchbind_3 = torch.ops.higher_order.call_torchbind(arg0_1, 'size')
sub = torch.ops.aten.sub.Tensor(call_torchbind_2, 0); call_torchbind_2 = None
add_2 = torch.ops.aten.add.Tensor(sub, arg1_1); sub = arg1_1 = None
return (add_2, add_1, arg0_1)
""",
)
# turn off tq type checking in eager execution
mod.check_tq_is_fake = False
self._assertEqualSkipScriptObject(gm(tq, x), mod(tq1, x))
self.assertEqual(tq.size(), 0)
self.assertEqual(tq1.size(), 0)
@skipIfTorchDynamo("torchbind not supported with dynamo yet")
class TestRegisterFakeClass(TestCase):
def setUp(self):
load_torchbind_test_lib()
def tearDown(self):
torch._library.fake_class_registry.global_fake_class_registry.clear()
def test_register_fake_class_no_torch_bind_class(self):
with self.assertRaisesRegex(RuntimeError, "Tried to instantiate class"):
@torch._library.register_fake_class("_TorchScriptTesting::NOT_A_VALID_NAME")
class Invalid:
pass
def test_register_fake_class_no_from_real(self):
with self.assertRaisesRegex(RuntimeError, "define a classmethod from_real"):
@torch._library.register_fake_class("_TorchScriptTesting::_Foo")
class InvalidFakeFoo:
def __init__(self):
pass
def test_register_fake_class_from_real_not_classmethod(self):
with self.assertRaisesRegex(RuntimeError, "is not a classmethod"):
@torch._library.register_fake_class("_TorchScriptTesting::_Foo")
class FakeFoo:
def __init__(self, x, y):
self.x = x
self.y = y
def from_real(self, foo_obj):
x, y = foo_obj.__getstate__()
return FakeFoo(x, y)
def test_register_fake_class_valid(self):
class FakeFoo:
def __init__(self, x, y):
self.x = x
self.y = y
@classmethod
def from_real(cls, foo_obj):
x, y = foo_obj.__getstate__()
return cls(x, y)
torch._library.register_fake_class("_TorchScriptTesting::_Foo", FakeFoo)
def test_register_fake_class_duplicate_registration(self):
@torch._library.register_fake_class("_TorchScriptTesting::_Foo")
class FakeFoo:
def __init__(self, x, y):
self.x = x
self.y = y
@classmethod
def from_real(cls, foo_obj):
x, y = foo_obj.__getstate__()
return cls(x, y)
with self.assertWarnsRegex(UserWarning, "already registered"):
torch._library.register_fake_class("_TorchScriptTesting::_Foo", FakeFoo)
instantiate_parametrized_tests(TestExportTorchbind)
if __name__ == "__main__":
run_tests()