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test_numpy.py
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"""Tests for the [Numpy-style parser][griffe.docstrings.numpy]."""
from __future__ import annotations
import pytest
from griffe.dataclasses import Attribute, Class, Docstring, Function, Module, Parameter, Parameters
from griffe.docstrings.dataclasses import (
DocstringAttribute,
DocstringParameter,
DocstringRaise,
DocstringReceive,
DocstringReturn,
DocstringSectionKind,
DocstringWarn,
DocstringYield,
)
from griffe.docstrings.utils import parse_annotation
from griffe.expressions import Name
from tests.test_docstrings.helpers import assert_attribute_equal, assert_element_equal, assert_parameter_equal
# =============================================================================================
# Markup flow (multilines, indentation, etc.)
def test_simple_docstring(parse_numpy):
"""Parse a simple docstring.
Parameters:
parse_numpy: Fixture parser.
"""
sections, warnings = parse_numpy("A simple docstring.")
assert len(sections) == 1
assert not warnings
def test_multiline_docstring(parse_numpy):
"""Parse a multi-line docstring.
Parameters:
parse_numpy: Fixture parser.
"""
sections, warnings = parse_numpy(
"""
A somewhat longer docstring.
Blablablabla.
"""
)
assert len(sections) == 1
assert not warnings
def test_code_blocks(parse_numpy):
"""Parse code blocks.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
This docstring contains a docstring in a code block o_O!
```python
\"\"\"
This docstring is contained in another docstring O_o!
Parameters:
s: A string.
\"\"\"
```
"""
sections, warnings = parse_numpy(docstring)
assert len(sections) == 1
assert not warnings
def test_indented_code_block(parse_numpy):
"""Parse indented code blocks.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
This docstring contains a docstring in a code block o_O!
\"\"\"
This docstring is contained in another docstring O_o!
Parameters:
s: A string.
\"\"\"
"""
sections, warnings = parse_numpy(docstring)
assert len(sections) == 1
assert not warnings
# =============================================================================================
# Annotations (general)
def test_prefer_docstring_type_over_annotation(parse_numpy):
"""Prefer the type written in the docstring over the annotation in the parent.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
a : int
"""
sections, _ = parse_numpy(
docstring, parent=Function("func", parameters=Parameters(Parameter("a", annotation="str")))
)
assert len(sections) == 1
assert_parameter_equal(sections[0].value[0], DocstringParameter("a", description="", annotation=Name("int", "int")))
def test_parse_complex_annotations(parse_numpy):
"""Check the type regex accepts all the necessary characters.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
a : typing.Tuple[str, random0123456789]
b : int | float | None
c : Literal['hello'] | Literal["world"]
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
param_a, param_b, param_c = sections[0].value
assert param_a.name == "a"
assert param_a.description == ""
assert param_a.annotation == "typing.Tuple[str, random0123456789]"
assert param_b.name == "b"
assert param_b.description == ""
assert param_b.annotation == "int | float | None"
assert param_c.name == "c"
assert param_c.description == ""
assert param_c.annotation == "Literal['hello'] | Literal[\"world\"]"
@pytest.mark.parametrize(
("docstring", "name"),
[
("Attributes\n---\na : {name}\n Description.\n", "int"),
("Parameters\n---\na : {name}\n Description.\n", "int"),
("Other Parameters\n---\na : {name}\n Description.\n", "int"),
("Yields\n---\na : {name}\n Description.\n", "int"),
("Receives\n---\na : {name}\n Description.\n", "int"),
("Returns\n---\na : {name}\n Description.\n", "int"),
("Raises\n---\n{name}\n Description.\n", "RuntimeError"),
("Warns\n---\n{name}\n Description.\n", "UserWarning"),
],
)
def test_parse_annotations_in_all_sections(parse_numpy, docstring, name):
"""Assert annotations are parsed in all relevant sections.
Parameters:
parse_numpy: Fixture parser.
docstring: Parametrized docstring.
name: Parametrized name in annotation.
"""
docstring = docstring.format(name=name)
sections, _ = parse_numpy(docstring, parent=Function("f"))
assert len(sections) == 1
assert sections[0].value[0].annotation == Name(name, name)
# https://github.com/mkdocstrings/mkdocstrings/issues/416
def test_dont_crash_on_text_annotations(parse_numpy):
"""Don't crash while parsing annotations containing unhandled nodes.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
region : str, list-like, geopandas.GeoSeries, geopandas.GeoDataFrame, geometric
Description.
"""
assert parse_numpy(docstring, parent=Function("f"))
# =============================================================================================
# Sections (general)
def test_parameters_section(parse_numpy):
"""Parse parameters section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
a
b : int
c : str, optional
d : float, default=1.0
e, f
g, h : bytes, optional, default=b''
i : {0, 1, 2}
j : {"a", 1, None, True}
k
K's description.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
def test_parse_starred_parameters(parse_numpy):
"""Parse parameters names with stars in them.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
*a : str
**b : int
***c : float
"""
sections, warnings = parse_numpy(docstring)
assert len(sections) == 1
assert len(warnings) == 1
def test_other_parameters_section(parse_numpy):
"""Parse other parameters section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Other Parameters
----------------
a
b : int
c : str, optional
d : float, default=1.0
e, f
g, h : bytes, optional, default=b''
i : {0, 1, 2}
j : {"a", 1, None, True}
k
K's description.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
def test_retrieve_annotation_from_parent(parse_numpy):
"""Retrieve parameter annotation from the parent object.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
a
"""
sections, _ = parse_numpy(
docstring, parent=Function("func", parameters=Parameters(Parameter("a", annotation="str")))
)
assert len(sections) == 1
assert_parameter_equal(sections[0].value[0], DocstringParameter("a", description="", annotation="str"))
def test_deprecated_section(parse_numpy):
"""Parse deprecated section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Deprecated
----------
1.23.4
Deprecated.
Sorry.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert sections[0].value.version == "1.23.4"
assert sections[0].value.description == "Deprecated.\nSorry."
def test_returns_section(parse_numpy):
"""Parse returns section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Returns
-------
list of int
A list of integers.
flag : bool
Some kind
of flag.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_element_equal(
sections[0].value[0], DocstringReturn(name="", annotation="list of int", description="A list of integers.")
)
assert_element_equal(
sections[0].value[1], DocstringReturn(name="", annotation="bool", description="Some kind\nof flag.")
)
def test_yields_section(parse_numpy):
"""Parse yields section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Yields
------
list of int
A list of integers.
flag : bool
Some kind
of flag.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_element_equal(
sections[0].value[0], DocstringYield(name="", annotation="list of int", description="A list of integers.")
)
assert_element_equal(
sections[0].value[1], DocstringYield(name="", annotation="bool", description="Some kind\nof flag.")
)
def test_receives_section(parse_numpy):
"""Parse receives section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Receives
--------
list of int
A list of integers.
flag : bool
Some kind
of flag.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_element_equal(
sections[0].value[0], DocstringReceive(name="", annotation="list of int", description="A list of integers.")
)
assert_element_equal(
sections[0].value[1], DocstringReceive(name="", annotation="bool", description="Some kind\nof flag.")
)
def test_raises_section(parse_numpy):
"""Parse raises section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Raises
------
RuntimeError
There was an issue.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_element_equal(
sections[0].value[0], DocstringRaise(annotation="RuntimeError", description="There was an issue.")
)
def test_warns_section(parse_numpy):
"""Parse warns section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Warns
-----
ResourceWarning
Heads up.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_element_equal(sections[0].value[0], DocstringWarn(annotation="ResourceWarning", description="Heads up."))
def test_attributes_section(parse_numpy):
"""Parse attributes section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Attributes
----------
a
Hello.
m
z : int
Bye.
"""
sections, _ = parse_numpy(docstring)
assert len(sections) == 1
assert_attribute_equal(sections[0].value[0], DocstringAttribute(name="a", annotation=None, description="Hello."))
assert_attribute_equal(sections[0].value[1], DocstringAttribute(name="m", annotation=None, description=""))
assert_attribute_equal(sections[0].value[2], DocstringAttribute(name="z", annotation="int", description="Bye."))
def test_examples_section(parse_numpy):
"""Parse examples section.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Examples
--------
Hello.
>>> 1 + 2
3
```python
>>> print("Hello again.")
```
>>> a = 0 # doctest: +SKIP
>>> b = a + 1
>>> print(b)
1
Bye.
--------
Not in the section.
"""
sections, _ = parse_numpy(docstring, trim_doctest_flags=False)
assert len(sections) == 2
examples = sections[0]
assert len(examples.value) == 5
assert examples.value[0] == (DocstringSectionKind.text, "Hello.")
assert examples.value[1] == (DocstringSectionKind.examples, ">>> 1 + 2\n3")
assert examples.value[3][1].startswith(">>> a = 0 # doctest: +SKIP")
def test_examples_section_when_followed_by_named_section(parse_numpy):
"""Parse examples section.
Parameters:
parse_numpy: Parse function (fixture).
"""
docstring = """
Examples
--------
Hello, hello.
Parameters
----------
foo : int
"""
sections, _ = parse_numpy(docstring, trim_doctest_flags=False)
assert len(sections) == 2
assert sections[0].kind is DocstringSectionKind.examples
assert sections[1].kind is DocstringSectionKind.parameters
# =============================================================================================
# Attributes sections
def test_retrieve_attributes_annotation_from_parent(parse_numpy):
"""Retrieve the annotations of attributes from the parent object.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Summary.
Attributes
----------
a :
Whatever.
b :
Whatever.
"""
parent = Class("cls")
parent["a"] = Attribute("a", annotation=Name("int", "int"))
parent["b"] = Attribute("b", annotation=Name("str", "str"))
sections, _ = parse_numpy(docstring, parent=parent)
attributes = sections[1].value
assert attributes[0].name == "a"
assert attributes[0].annotation.source == "int"
assert attributes[1].name == "b"
assert attributes[1].annotation.source == "str"
# =============================================================================================
# Parameters sections
def test_warn_about_unknown_parameters(parse_numpy):
"""Warn about unknown parameters in "Parameters" sections.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Parameters
----------
x : int
Integer.
y : int
Integer.
"""
_, warnings = parse_numpy(
docstring,
parent=Function(
"func",
parameters=Parameters(
Parameter("a"),
Parameter("y"),
),
),
)
assert len(warnings) == 1
assert "'x' does not appear in the parent signature" in warnings[0]
def test_never_warn_about_unknown_other_parameters(parse_numpy):
"""Never warn about unknown parameters in "Other parameters" sections.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Other Parameters
----------------
x : int
Integer.
z : int
Integer.
"""
_, warnings = parse_numpy(
docstring,
parent=Function(
"func",
parameters=Parameters(
Parameter("a"),
Parameter("y"),
),
),
)
assert not warnings
# =============================================================================================
# Yields sections
@pytest.mark.parametrize(
"return_annotation",
[
"Iterator[tuple[int, float]]",
"Generator[tuple[int, float], ..., ...]",
],
)
def test_parse_yields_tuple_in_iterator_or_generator(parse_numpy, return_annotation):
"""Parse Yields annotations in Iterator or Generator types.
Parameters:
parse_numpy: Fixture parser.
return_annotation: Parametrized return annotation as a string.
"""
docstring = """
Summary.
Yields
------
a :
Whatever.
b :
Whatever.
"""
sections, _ = parse_numpy(
docstring,
parent=Function(
"func",
returns=parse_annotation(return_annotation, Docstring("d", parent=Function("f"))),
),
)
yields = sections[1].value
assert yields[0].name == "a"
assert yields[0].annotation.source == "int"
assert yields[1].name == "b"
assert yields[1].annotation.source == "float"
# =============================================================================================
# Receives sections
def test_parse_receives_tuple_in_generator(parse_numpy):
"""Parse Receives annotations in Generator type.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Summary.
Receives
--------
a :
Whatever.
b :
Whatever.
"""
sections, _ = parse_numpy(
docstring,
parent=Function(
"func",
returns=parse_annotation("Generator[..., tuple[int, float], ...]", Docstring("d", parent=Function("f"))),
),
)
receives = sections[1].value
assert receives[0].name == "a"
assert receives[0].annotation.source == "int"
assert receives[1].name == "b"
assert receives[1].annotation.source == "float"
# =============================================================================================
# Returns sections
def test_parse_returns_tuple_in_generator(parse_numpy):
"""Parse Returns annotations in Generator type.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = """
Summary.
Returns
-------
a :
Whatever.
b :
Whatever.
"""
sections, _ = parse_numpy(
docstring,
parent=Function(
"func",
returns=parse_annotation("Generator[..., ..., tuple[int, float]]", Docstring("d", parent=Function("f"))),
),
)
returns = sections[1].value
assert returns[0].name == "a"
assert returns[0].annotation.source == "int"
assert returns[1].name == "b"
assert returns[1].annotation.source == "float"
# =============================================================================================
# Parser special features
@pytest.mark.parametrize(
"docstring",
[
"",
"\n",
"\n\n",
"Summary.",
"Summary.\n\n\n",
"Summary.\n\nParagraph.",
"Summary\non two lines.",
"Summary\non two lines.\n\nParagraph.",
],
)
def test_ignore_init_summary(parse_numpy, docstring):
"""Correctly ignore summary in `__init__` methods' docstrings.
Parameters:
parse_numpy: Fixture parser.
docstring: The docstring to parse (parametrized).
"""
sections, _ = parse_numpy(docstring, parent=Function("__init__", parent=Class("C")), ignore_init_summary=True)
for section in sections:
assert "Summary" not in section.value
if docstring.strip():
sections, _ = parse_numpy(docstring, parent=Function("__init__", parent=Module("M")), ignore_init_summary=True)
assert "Summary" in sections[0].value
sections, _ = parse_numpy(docstring, parent=Function("f", parent=Class("C")), ignore_init_summary=True)
assert "Summary" in sections[0].value
sections, _ = parse_numpy(docstring, ignore_init_summary=True)
assert "Summary" in sections[0].value
@pytest.mark.parametrize(
"docstring",
[
"""
Examples
--------
Base case 1. We want to skip the following test.
>>> 1 + 1 == 3 # doctest: +SKIP
True
""",
r"""
Examples
--------
Base case 2. We have a blankline test.
>>> print("a\n\nb")
a
<BLANKLINE>
b
""",
],
)
def test_trim_doctest_flags_basic_example(parse_numpy, docstring):
"""Correctly parse_numpy simple example docstrings when `trim_doctest_flags` option is turned on.
Parameters:
parse_numpy: Fixture parser.
docstring: The docstring to parse_numpy (parametrized).
"""
sections, warnings = parse_numpy(docstring, trim_doctest_flags=True)
assert len(sections) == 1
assert len(sections[0].value) == 2
assert not warnings
# verify that doctest flags have indeed been trimmed
example_str = sections[0].value[1][1]
assert "# doctest: +SKIP" not in example_str
assert "<BLANKLINE>" not in example_str
def test_trim_doctest_flags_multi_example(parse_numpy):
"""Correctly parse_numpy multiline example docstrings when `trim_doctest_flags` option is turned on.
Parameters:
parse_numpy: Fixture parser.
"""
docstring = r"""
Examples
--------
Test multiline example blocks.
We want to skip the following test.
>>> 1 + 1 == 3 # doctest: +SKIP
True
And then a few more examples here:
>>> print("a\n\nb")
a
<BLANKLINE>
b
>>> 1 + 1 == 2 # doctest: +SKIP
>>> print(list(range(1, 100))) # doctest: +ELLIPSIS
[1, 2, ..., 98, 99]
"""
sections, warnings = parse_numpy(docstring, trim_doctest_flags=True)
assert len(sections) == 1
assert len(sections[0].value) == 4
assert not warnings
# verify that doctest flags have indeed been trimmed
example_str = sections[0].value[1][1]
assert "# doctest: +SKIP" not in example_str
example_str = sections[0].value[3][1]
assert "<BLANKLINE>" not in example_str
assert "\n>>> print(list(range(1, 100)))\n" in example_str