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chore: import upstream snapshot with attribution

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2026-07-13 13:24:13 +08:00
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decoding/IAD/fairseq/tests/test_constraints.py
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# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
import sys
import unittest
import torch
from fairseq.token_generation_constraints import *
def tensorize(constraints: List[List[int]]) -> torch.Tensor:
return [torch.tensor(x) for x in constraints]
class TestHelperRoutines(unittest.TestCase):
def setUp(self):
self.examples = [
([[]], torch.tensor([[0]])),
([[], []], torch.tensor([[0], [0]])),
([[torch.tensor([1, 2])], []], torch.tensor([[1, 1, 2, 0], [0, 0, 0, 0]])),
(
[
[
torch.tensor([3, 1, 2]),
torch.tensor([3]),
torch.tensor([4, 5, 6, 7]),
],
[],
[torch.tensor([1, 8, 9, 10, 1, 4, 11, 12])],
],
torch.tensor(
[
[3, 3, 1, 2, 0, 3, 0, 4, 5, 6, 7, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 8, 9, 10, 1, 4, 11, 12, 0, 0, 0],
]
),
),
]
def test_packing(self):
"""Ensures the list of lists of tensors gets packed correctly."""
for batch_constraints, expected_tensor in self.examples:
packed = pack_constraints(batch_constraints)
assert torch.equal(packed, expected_tensor)
class TestUnorderedConstraintState(unittest.TestCase):
def setUp(self):
# Tuples of (contraint set, expected printed graph, token counts per node)
self.examples = [
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
"([None].False#6 ([1].True#4 ([2].False#1 [3].True#1) [3].True#1 [4].True#1) ([4].False#2 ([5].True#2 ([6].False#1 [7].True#1))))",
{1: 4, 2: 1, 3: 2, 4: 3, 5: 2, 6: 1, 7: 1},
),
([], "[None].False#0", {}),
(tensorize([[0]]), "([None].False#1 [0].True#1)", {0: 1}),
(
tensorize([[100000, 1, 2, 3, 4, 5]]),
"([None].False#1 ([100000].False#1 ([1].False#1 ([2].False#1 ([3].False#1 ([4].False#1 [5].True#1))))))",
{100000: 1, 1: 1, 2: 1, 3: 1, 4: 1, 5: 1},
),
(
tensorize([[1, 2], [1, 2]]),
"([None].False#2 ([1].False#2 [2].True#2))",
{1: 2, 2: 2},
),
(
tensorize([[1, 2], [3, 4]]),
"([None].False#2 ([1].False#1 [2].True#1) ([3].False#1 [4].True#1))",
{1: 1, 2: 1, 3: 1, 4: 1},
),
]
self.sequences = [
(
self.examples[0][0],
[],
{"bank": 0, "num_completed": 0, "finished": False, "is_root": True},
),
(
self.examples[0][0],
[1, 2],
{"bank": 2, "num_completed": 0, "finished": False, "is_root": False},
),
(
self.examples[0][0],
[1, 2, 94],
{"bank": 1, "num_completed": 1, "finished": False, "is_root": True},
),
(
self.examples[0][0],
[1, 3, 999, 1, 4],
{"bank": 4, "num_completed": 2, "finished": False, "is_root": False},
),
(
self.examples[0][0],
[1, 3, 999, 1, 4, 999],
{"bank": 4, "num_completed": 2, "finished": False, "is_root": True},
),
(
self.examples[0][0],
[4, 5, 6, 8],
{"bank": 2, "num_completed": 1, "finished": False, "is_root": True},
),
(
self.examples[0][0],
# Tricky, because in last three, goes down [1->4] branch, could miss [1] and [4->5]
# [[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]],
[1, 2, 3, 1, 3, 1, 4, 4, 5, 6, 7, 1, 4, 5],
{"bank": 14, "num_completed": 6, "finished": True, "is_root": False},
),
(
self.examples[0][0],
[1, 2, 3, 999, 1, 3, 1, 4, 4, 5, 6, 7, 1, 4, 5, 117],
{"bank": 14, "num_completed": 6, "finished": True, "is_root": True},
),
(
tensorize([[1], [2, 3]]),
# Should not be able to get credit for entering 1 a second time
[1, 1],
{"bank": 1, "num_completed": 1, "finished": False, "is_root": True},
),
(
self.examples[4][0],
[1, 2, 1, 2],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": False},
),
(
self.examples[4][0],
[1, 2, 1, 2, 1],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": True},
),
(
self.examples[5][0],
[1, 2, 3, 4, 5],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": True},
),
]
def test_graphs(self):
"""
Test whether unordered graph systems are created correctly.
"""
for example in self.examples:
constraints, expected, gold_counts = example
c = ConstraintNode.create(constraints)
assert (
ConstraintNode.print_graph(c) == expected
), f"got {ConstraintNode.print_graph(c)}, expected {expected}"
assert (
c.token_counts() == gold_counts
), f"{c} got {c.token_counts()} wanted {gold_counts}"
def test_next_tokens(self):
"""
Tests that the set of next tokens is correct.
"""
for example in self.examples:
constraints, expected, gold_counts = example
root = ConstraintNode.create(constraints)
root_tokens = set(root.children.keys())
for sequence in constraints:
state = UnorderedConstraintState(root)
for token in sequence:
all_tokens = root_tokens.union(state.node.children.keys())
assert (
all_tokens == state.next_tokens()
), f"ALL {all_tokens} NEXT {state.next_tokens()}"
state = state.advance(token)
def test_sequences(self):
for constraints, tokens, expected in self.sequences:
state = UnorderedConstraintState.create(pack_constraints([constraints])[0])
for token in tokens:
state = state.advance(token)
result = {}
for attr in expected.keys():
result[attr] = getattr(state, attr)
assert (
result == expected
), f"TEST({tokens}) GOT: {result} WANTED: {expected}"
class TestOrderedConstraintState(unittest.TestCase):
def setUp(self):
self.sequences = [
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[],
{"bank": 0, "num_completed": 0, "finished": False, "is_root": True},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2],
{"bank": 2, "num_completed": 0, "finished": False, "is_root": False},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2, 94],
{"bank": 0, "num_completed": 0, "finished": False, "is_root": True},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 3, 999, 1, 4],
{"bank": 0, "num_completed": 0, "finished": False, "is_root": True},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2, 3, 999, 999],
{"bank": 3, "num_completed": 1, "finished": False, "is_root": False},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2, 3, 77, 1, 3, 1],
{"bank": 6, "num_completed": 2, "finished": False, "is_root": False},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2, 3, 1, 3, 1, 4, 4, 5, 6, 7, 1, 4, 5],
{"bank": 14, "num_completed": 6, "finished": True, "is_root": False},
),
(
tensorize([[1, 2, 3], [1, 3], [1, 4], [4, 5, 6, 7], [1], [4, 5]]),
[1, 2, 999, 1, 2, 3, 999, 1, 3, 1, 4, 4, 5, 6, 7, 1, 4, 5, 117],
{"bank": 14, "num_completed": 6, "finished": True, "is_root": False},
),
(
tensorize([[1], [2, 3]]),
[1, 1],
{"bank": 1, "num_completed": 1, "finished": False, "is_root": False},
),
(
tensorize([[1, 2], [1, 2]]),
[1, 2, 1, 2],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": False},
),
(
tensorize([[1, 2], [1, 2]]),
[1, 2, 1, 2, 1],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": False},
),
(
tensorize([[1, 2], [3, 4]]),
[1, 2, 3, 4, 5],
{"bank": 4, "num_completed": 2, "finished": True, "is_root": False},
),
]
def test_sequences(self):
for i, (constraints, tokens, expected) in enumerate(self.sequences):
state = OrderedConstraintState.create(pack_constraints([constraints])[0])
for token in tokens:
state = state.advance(token)
result = {}
for attr in expected.keys():
result[attr] = getattr(state, attr)
assert (
result == expected
), f"TEST({tokens}) GOT: {result} WANTED: {expected}"
if __name__ == "__main__":
unittest.main()