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fix: support pydantic list of structs or optional struct (#2953)

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Closes #2950

*This code is generated by codex-gpt5.2*
This commit is contained in:
Lei Xu
2026-01-28 21:08:18 -08:00
committed by GitHub
parent e9e904783c
commit ad51e2dd1f
2 changed files with 294 additions and 19 deletions
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247
python/python/tests/test_pydantic.py
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@@ -105,6 +105,253 @@ def test_optional_types_py310():
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info < (3, 10),
reason="using PEP 604 union types requires python3.10 or higher",
)
def test_optional_structs_py310():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
split: SplitInfo | None = None
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"split",
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
),
True,
),
]
)
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info < (3, 10),
reason="using PEP 604 union types requires python3.10 or higher",
)
def test_optional_struct_list_py310():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: list[SplitInfo] | None = None
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
)
),
True,
),
]
)
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info < (3, 9),
reason="using native type alias requires python3.9 or higher",
)
def test_nested_struct_list():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: list[SplitInfo]
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
)
),
False,
),
]
)
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info < (3, 9),
reason="using native type alias requires python3.9 or higher",
)
def test_nested_struct_list_optional():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: Optional[list[SplitInfo]] = None
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
)
),
True,
),
]
)
assert schema == expect_schema
def test_nested_struct_list_optional_items():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: list[Optional[SplitInfo]]
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.field(
"item",
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
),
True,
)
),
False,
),
]
)
assert schema == expect_schema
def test_nested_struct_list_optional_container_and_items():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: Optional[list[Optional[SplitInfo]]] = None
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.field(
"item",
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
),
True,
)
),
True,
),
]
)
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info < (3, 10),
reason="using PEP 604 union types requires python3.10 or higher",
)
def test_nested_struct_list_optional_items_pep604():
class SplitInfo(pydantic.BaseModel):
start_frame: int
end_frame: int
class TestModel(pydantic.BaseModel):
id: str
splits: list[SplitInfo | None]
schema = pydantic_to_schema(TestModel)
expect_schema = pa.schema(
[
pa.field("id", pa.utf8(), False),
pa.field(
"splits",
pa.list_(
pa.field(
"item",
pa.struct(
[
pa.field("start_frame", pa.int64(), False),
pa.field("end_frame", pa.int64(), False),
]
),
True,
)
),
False,
),
]
)
assert schema == expect_schema
@pytest.mark.skipif(
sys.version_info > (3, 8),
reason="using native type alias requires python3.9 or higher",