mirror of
https://github.com/p2p-ld/numpydantic.git
synced 2024-11-14 10:44:28 +00:00
280 lines
8.2 KiB
Python
280 lines
8.2 KiB
Python
import pdb
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import pytest
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from typing import Union, Optional, Any
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import json
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import numpy as np
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from pydantic import BaseModel, ValidationError, Field
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from nptyping import Number
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from numpydantic import NDArray, Shape
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from numpydantic.exceptions import ShapeError, DtypeError
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from numpydantic import dtype
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def test_ndarray_type():
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class Model(BaseModel):
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array: NDArray[Shape["2 x, * y"], Number]
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array_any: Optional[NDArray[Any, Any]] = None
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schema = Model.model_json_schema()
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assert schema["properties"]["array"]["items"] == {
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"items": {"type": "number"},
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"type": "array",
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}
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assert schema["properties"]["array"]["maxItems"] == 2
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assert schema["properties"]["array"]["minItems"] == 2
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# models should instantiate correctly!
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instance = Model(array=np.zeros((2, 3)))
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with pytest.raises(ValidationError):
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instance = Model(array=np.zeros((4, 6)))
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with pytest.raises(DtypeError):
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instance = Model(array=np.ones((2, 3), dtype=bool))
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instance = Model(array=np.zeros((2, 3)), array_any=np.ones((3, 4, 5)))
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def test_ndarray_union():
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class Model(BaseModel):
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array: Optional[
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Union[
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NDArray[Shape["* x, * y"], Number],
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NDArray[Shape["* x, * y, 3 r_g_b"], Number],
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NDArray[Shape["* x, * y, 3 r_g_b, 4 r_g_b_a"], Number],
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]
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] = Field(None)
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instance = Model()
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instance = Model(array=np.random.random((5, 10)))
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instance = Model(array=np.random.random((5, 10, 3)))
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instance = Model(array=np.random.random((5, 10, 3, 4)))
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with pytest.raises(ValidationError):
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instance = Model(array=np.random.random((5,)))
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with pytest.raises(ValidationError):
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instance = Model(array=np.random.random((5, 10, 4)))
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with pytest.raises(ValidationError):
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instance = Model(array=np.random.random((5, 10, 3, 6)))
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with pytest.raises(ValidationError):
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instance = Model(array=np.random.random((5, 10, 4, 6)))
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@pytest.mark.parametrize("dtype", dtype.Number)
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def test_ndarray_unparameterized(dtype):
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"""
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NDArray without any parameters is any shape, any type
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Returns:
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"""
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class Model(BaseModel):
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array: NDArray
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# not very sophisticated fuzzing of "any shape"
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test_cases = 10
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for i in range(test_cases):
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n_dimensions = np.random.randint(1, 8)
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dim_sizes = np.random.randint(1, 7, size=n_dimensions)
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_ = Model(array=np.zeros(dim_sizes, dtype=dtype))
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def test_ndarray_any():
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"""
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using :class:`typing.Any` in for the shape means any shape
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"""
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class Model(BaseModel):
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array: NDArray[Any, np.uint8]
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# not very sophisticated fuzzing of "any shape"
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test_cases = 100
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for i in range(test_cases):
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n_dimensions = np.random.randint(1, 8)
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dim_sizes = np.random.randint(1, 16, size=n_dimensions)
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_ = Model(array=np.zeros(dim_sizes, dtype=np.uint8))
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def test_ndarray_coercion():
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"""
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Coerce lists to arrays
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"""
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class Model(BaseModel):
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array: NDArray[Shape["* x"], Number]
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amod = Model(array=[1, 2, 3, 4.5])
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assert np.allclose(amod.array, np.array([1, 2, 3, 4.5]))
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with pytest.raises(DtypeError):
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amod = Model(array=["a", "b", "c"])
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def test_ndarray_serialize():
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"""
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Arrays should be dumped to a list when using json, but kept as ndarray otherwise
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"""
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class Model(BaseModel):
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array: NDArray[Any, Number]
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mod = Model(array=np.random.random((3, 3)))
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mod_str = mod.model_dump_json()
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mod_json = json.loads(mod_str)
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assert isinstance(mod_json["array"], list)
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# but when we just dump to a dict we don't coerce
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mod_dict = mod.model_dump()
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assert isinstance(mod_dict["array"], np.ndarray)
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_json_schema_types = [
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*[(t, float) for t in dtype.Float],
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*[(t, int) for t in dtype.Integer],
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]
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def test_json_schema_basic(array_model):
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"""
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NDArray types should correctly generate a list of lists JSON schema
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"""
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shape = (15, 10)
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dtype = float
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model = array_model(shape, dtype)
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schema = model.model_json_schema()
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field = schema["properties"]["array"]
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# outer shape
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assert field["maxItems"] == shape[0]
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assert field["minItems"] == shape[0]
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assert field["type"] == "array"
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# inner shape
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inner = field["items"]
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assert inner["minItems"] == shape[1]
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assert inner["maxItems"] == shape[1]
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assert inner["items"]["type"] == "number"
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@pytest.mark.parametrize("dtype", [*dtype.Integer, *dtype.Float])
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def test_json_schema_dtype_single(dtype, array_model):
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"""
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dtypes should have correct mins and maxes set, and store the source dtype
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"""
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if issubclass(dtype, np.floating):
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info = np.finfo(dtype)
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min_val = info.min
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max_val = info.max
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schema_type = "number"
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elif issubclass(dtype, np.integer):
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info = np.iinfo(dtype)
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min_val = info.min
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max_val = info.max
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schema_type = "integer"
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else:
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raise ValueError("These should all be numpy types!")
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shape = (15, 10)
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model = array_model(shape, dtype)
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schema = model.model_json_schema()
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inner_type = schema["properties"]["array"]["items"]["items"]
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assert inner_type["minimum"] == min_val
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assert inner_type["maximum"] == max_val
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assert inner_type["type"] == schema_type
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assert schema["properties"]["array"]["dtype"] == ".".join(
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[dtype.__module__, dtype.__name__]
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)
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@pytest.mark.parametrize(
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"dtype,expected",
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[
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(dtype.Integer, "integer"),
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(dtype.Float, "number"),
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(dtype.Bool, "boolean"),
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(int, "integer"),
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(float, "number"),
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(bool, "boolean"),
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(complex, "any"),
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],
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)
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def test_json_schema_dtype_builtin(dtype, expected, array_model):
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"""
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Using builtin or generic (eg. `dtype.Integer` ) dtypes should
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make a simple json schema without mins/maxes/dtypes.
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"""
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model = array_model(dtype=dtype)
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schema = model.model_json_schema()
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inner_type = schema["properties"]["array"]["items"]["items"]
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if expected == "any":
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assert inner_type == {}
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else:
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assert inner_type["type"] == expected
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def _recursive_array(schema):
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assert "$defs" in schema
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# get the key uses for the array
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array_key = list(schema["$defs"].keys())[0]
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# the array property should be a ref to the recursive array
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# get the innermost part of the field schema
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field_schema = schema["properties"]["array"]
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while "items" in field_schema:
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field_schema = field_schema["items"]
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assert field_schema["$ref"] == f"#/$defs/{array_key}"
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# and the recursive array should indeed be recursive...
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# specifically it should be an array whose items can be itself or
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# of the type specified by the dtype
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any_of = schema["$defs"][array_key]["anyOf"]
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assert any_of[0]["items"]["$ref"] == f"#/$defs/{array_key}"
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assert any_of[0]["type"] == "array"
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# here we are just assuming that it's a uint8 array..
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assert any_of[1]["type"] == "integer"
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assert any_of[1]["maximum"] == 255
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assert any_of[1]["minimum"] == 0
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def test_json_schema_ellipsis():
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"""
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NDArray types should create a recursive JSON schema for any-shaped arrays
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"""
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class AnyShape(BaseModel):
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array: NDArray[Shape["*, ..."], np.uint8]
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schema = AnyShape.model_json_schema()
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_recursive_array(schema)
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class ConstrainedAnyShape(BaseModel):
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array: NDArray[Shape["3, 4, ..."], np.uint8]
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schema = ConstrainedAnyShape.model_json_schema()
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_recursive_array(schema)
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def test_instancecheck():
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"""
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NDArray should handle ``isinstance()`` s.t. valid arrays are ``True``
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and invalid arrays are ``False``
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We don't make this test exhaustive because correctness of validation
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is tested elsewhere. We are just testing that the type checking works
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"""
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array_type = NDArray[Shape["1, 2, 3"], int]
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assert isinstance(np.zeros((1, 2, 3), dtype=int), array_type)
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assert not isinstance(np.zeros((2, 2, 3), dtype=int), array_type)
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assert not isinstance(np.zeros((1, 2, 3), dtype=float), array_type)
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def my_function(array: NDArray[Shape["1, 2, 3"], int]):
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return array
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my_function(np.zeros((1, 2, 3), int))
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