mirror of
https://github.com/RYDE-WORK/pybind11.git
synced 2026-01-19 21:23:26 +08:00
99773fc5f6
* Throw error_already_set in py::len on failing PyObject_Length * Fix tests to mach error message on PyPy
435 lines
13 KiB
Python
435 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import division
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import pytest
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import sys
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import env # noqa: F401
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from pybind11_tests import pytypes as m
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from pybind11_tests import debug_enabled
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def test_int(doc):
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assert doc(m.get_int) == "get_int() -> int"
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def test_iterator(doc):
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assert doc(m.get_iterator) == "get_iterator() -> Iterator"
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def test_iterable(doc):
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assert doc(m.get_iterable) == "get_iterable() -> Iterable"
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def test_list(capture, doc):
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with capture:
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lst = m.get_list()
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assert lst == ["inserted-0", "overwritten", "inserted-2"]
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lst.append("value2")
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m.print_list(lst)
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assert capture.unordered == """
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Entry at position 0: value
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list item 0: inserted-0
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list item 1: overwritten
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list item 2: inserted-2
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list item 3: value2
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"""
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assert doc(m.get_list) == "get_list() -> list"
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assert doc(m.print_list) == "print_list(arg0: list) -> None"
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def test_none(capture, doc):
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assert doc(m.get_none) == "get_none() -> None"
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assert doc(m.print_none) == "print_none(arg0: None) -> None"
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def test_set(capture, doc):
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s = m.get_set()
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assert s == {"key1", "key2", "key3"}
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with capture:
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s.add("key4")
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m.print_set(s)
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assert capture.unordered == """
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key: key1
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key: key2
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key: key3
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key: key4
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"""
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assert not m.set_contains(set([]), 42)
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assert m.set_contains({42}, 42)
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assert m.set_contains({"foo"}, "foo")
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assert doc(m.get_list) == "get_list() -> list"
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assert doc(m.print_list) == "print_list(arg0: list) -> None"
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def test_dict(capture, doc):
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d = m.get_dict()
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assert d == {"key": "value"}
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with capture:
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d["key2"] = "value2"
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m.print_dict(d)
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assert capture.unordered == """
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key: key, value=value
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key: key2, value=value2
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"""
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assert not m.dict_contains({}, 42)
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assert m.dict_contains({42: None}, 42)
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assert m.dict_contains({"foo": None}, "foo")
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assert doc(m.get_dict) == "get_dict() -> dict"
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assert doc(m.print_dict) == "print_dict(arg0: dict) -> None"
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assert m.dict_keyword_constructor() == {"x": 1, "y": 2, "z": 3}
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def test_str(doc):
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assert m.str_from_string().encode().decode() == "baz"
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assert m.str_from_bytes().encode().decode() == "boo"
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assert doc(m.str_from_bytes) == "str_from_bytes() -> str"
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class A(object):
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def __str__(self):
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return "this is a str"
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def __repr__(self):
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return "this is a repr"
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assert m.str_from_object(A()) == "this is a str"
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assert m.repr_from_object(A()) == "this is a repr"
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assert m.str_from_handle(A()) == "this is a str"
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s1, s2 = m.str_format()
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assert s1 == "1 + 2 = 3"
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assert s1 == s2
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malformed_utf8 = b"\x80"
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assert m.str_from_object(malformed_utf8) is malformed_utf8 # To be fixed; see #2380
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if env.PY2:
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# with pytest.raises(UnicodeDecodeError):
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# m.str_from_object(malformed_utf8)
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with pytest.raises(UnicodeDecodeError):
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m.str_from_handle(malformed_utf8)
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else:
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# assert m.str_from_object(malformed_utf8) == "b'\\x80'"
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assert m.str_from_handle(malformed_utf8) == "b'\\x80'"
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def test_bytes(doc):
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assert m.bytes_from_string().decode() == "foo"
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assert m.bytes_from_str().decode() == "bar"
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assert doc(m.bytes_from_str) == "bytes_from_str() -> {}".format(
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"str" if env.PY2 else "bytes"
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)
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def test_capsule(capture):
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pytest.gc_collect()
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with capture:
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a = m.return_capsule_with_destructor()
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del a
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pytest.gc_collect()
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assert capture.unordered == """
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creating capsule
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destructing capsule
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"""
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with capture:
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a = m.return_capsule_with_destructor_2()
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del a
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pytest.gc_collect()
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assert capture.unordered == """
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creating capsule
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destructing capsule: 1234
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"""
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with capture:
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a = m.return_capsule_with_name_and_destructor()
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del a
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pytest.gc_collect()
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assert capture.unordered == """
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created capsule (1234, 'pointer type description')
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destructing capsule (1234, 'pointer type description')
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"""
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def test_accessors():
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class SubTestObject:
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attr_obj = 1
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attr_char = 2
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class TestObject:
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basic_attr = 1
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begin_end = [1, 2, 3]
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d = {"operator[object]": 1, "operator[char *]": 2}
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sub = SubTestObject()
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def func(self, x, *args):
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return self.basic_attr + x + sum(args)
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d = m.accessor_api(TestObject())
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assert d["basic_attr"] == 1
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assert d["begin_end"] == [1, 2, 3]
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assert d["operator[object]"] == 1
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assert d["operator[char *]"] == 2
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assert d["attr(object)"] == 1
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assert d["attr(char *)"] == 2
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assert d["missing_attr_ptr"] == "raised"
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assert d["missing_attr_chain"] == "raised"
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assert d["is_none"] is False
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assert d["operator()"] == 2
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assert d["operator*"] == 7
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assert d["implicit_list"] == [1, 2, 3]
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assert all(x in TestObject.__dict__ for x in d["implicit_dict"])
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assert m.tuple_accessor(tuple()) == (0, 1, 2)
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d = m.accessor_assignment()
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assert d["get"] == 0
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assert d["deferred_get"] == 0
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assert d["set"] == 1
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assert d["deferred_set"] == 1
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assert d["var"] == 99
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def test_constructors():
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"""C++ default and converting constructors are equivalent to type calls in Python"""
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types = [bytes, str, bool, int, float, tuple, list, dict, set]
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expected = {t.__name__: t() for t in types}
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if env.PY2:
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# Note that bytes.__name__ == 'str' in Python 2.
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# pybind11::str is unicode even under Python 2.
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expected["bytes"] = bytes()
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expected["str"] = unicode() # noqa: F821
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assert m.default_constructors() == expected
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data = {
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bytes: b'41', # Currently no supported or working conversions.
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str: 42,
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bool: "Not empty",
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int: "42",
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float: "+1e3",
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tuple: range(3),
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list: range(3),
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dict: [("two", 2), ("one", 1), ("three", 3)],
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set: [4, 4, 5, 6, 6, 6],
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memoryview: b'abc'
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}
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inputs = {k.__name__: v for k, v in data.items()}
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expected = {k.__name__: k(v) for k, v in data.items()}
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if env.PY2: # Similar to the above. See comments above.
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inputs["bytes"] = b'41'
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inputs["str"] = 42
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expected["bytes"] = b'41'
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expected["str"] = u"42"
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assert m.converting_constructors(inputs) == expected
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assert m.cast_functions(inputs) == expected
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# Converting constructors and cast functions should just reference rather
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# than copy when no conversion is needed:
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noconv1 = m.converting_constructors(expected)
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for k in noconv1:
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assert noconv1[k] is expected[k]
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noconv2 = m.cast_functions(expected)
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for k in noconv2:
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assert noconv2[k] is expected[k]
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def test_non_converting_constructors():
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non_converting_test_cases = [
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("bytes", range(10)),
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("none", 42),
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("ellipsis", 42),
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]
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for t, v in non_converting_test_cases:
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with pytest.raises(TypeError) as excinfo:
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m.nonconverting_constructor(t, v)
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expected_error = "Object of type '{}' is not an instance of '{}'".format(
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type(v).__name__, t)
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assert str(excinfo.value) == expected_error
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def test_pybind11_str_raw_str():
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# specifically to exercise pybind11::str::raw_str
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cvt = m.convert_to_pybind11_str
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assert cvt(u"Str") == u"Str"
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assert cvt(b'Bytes') == u"Bytes" if env.PY2 else "b'Bytes'"
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assert cvt(None) == u"None"
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assert cvt(False) == u"False"
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assert cvt(True) == u"True"
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assert cvt(42) == u"42"
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assert cvt(2**65) == u"36893488147419103232"
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assert cvt(-1.50) == u"-1.5"
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assert cvt(()) == u"()"
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assert cvt((18,)) == u"(18,)"
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assert cvt([]) == u"[]"
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assert cvt([28]) == u"[28]"
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assert cvt({}) == u"{}"
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assert cvt({3: 4}) == u"{3: 4}"
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assert cvt(set()) == u"set([])" if env.PY2 else "set()"
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assert cvt({3, 3}) == u"set([3])" if env.PY2 else "{3}"
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valid_orig = u"DZ"
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valid_utf8 = valid_orig.encode("utf-8")
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valid_cvt = cvt(valid_utf8)
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assert type(valid_cvt) == bytes # Probably surprising.
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assert valid_cvt == b'\xc7\xb1'
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malformed_utf8 = b'\x80'
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malformed_cvt = cvt(malformed_utf8)
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assert type(malformed_cvt) == bytes # Probably surprising.
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assert malformed_cvt == b'\x80'
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def test_implicit_casting():
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"""Tests implicit casting when assigning or appending to dicts and lists."""
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z = m.get_implicit_casting()
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assert z['d'] == {
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'char*_i1': 'abc', 'char*_i2': 'abc', 'char*_e': 'abc', 'char*_p': 'abc',
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'str_i1': 'str', 'str_i2': 'str1', 'str_e': 'str2', 'str_p': 'str3',
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'int_i1': 42, 'int_i2': 42, 'int_e': 43, 'int_p': 44
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}
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assert z['l'] == [3, 6, 9, 12, 15]
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def test_print(capture):
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with capture:
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m.print_function()
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assert capture == """
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Hello, World!
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1 2.0 three True -- multiple args
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*args-and-a-custom-separator
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no new line here -- next print
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flush
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py::print + str.format = this
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"""
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assert capture.stderr == "this goes to stderr"
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with pytest.raises(RuntimeError) as excinfo:
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m.print_failure()
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assert str(excinfo.value) == "make_tuple(): unable to convert " + (
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"argument of type 'UnregisteredType' to Python object"
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if debug_enabled else
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"arguments to Python object (compile in debug mode for details)"
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)
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def test_hash():
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class Hashable(object):
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def __init__(self, value):
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self.value = value
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def __hash__(self):
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return self.value
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class Unhashable(object):
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__hash__ = None
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assert m.hash_function(Hashable(42)) == 42
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with pytest.raises(TypeError):
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m.hash_function(Unhashable())
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def test_number_protocol():
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for a, b in [(1, 1), (3, 5)]:
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li = [a == b, a != b, a < b, a <= b, a > b, a >= b, a + b,
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a - b, a * b, a / b, a | b, a & b, a ^ b, a >> b, a << b]
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assert m.test_number_protocol(a, b) == li
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def test_list_slicing():
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li = list(range(100))
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assert li[::2] == m.test_list_slicing(li)
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def test_issue2361():
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# See issue #2361
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assert m.issue2361_str_implicit_copy_none() == "None"
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with pytest.raises(TypeError) as excinfo:
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assert m.issue2361_dict_implicit_copy_none()
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assert "'NoneType' object is not iterable" in str(excinfo.value)
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@pytest.mark.parametrize('method, args, fmt, expected_view', [
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(m.test_memoryview_object, (b'red',), 'B', b'red'),
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(m.test_memoryview_buffer_info, (b'green',), 'B', b'green'),
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(m.test_memoryview_from_buffer, (False,), 'h', [3, 1, 4, 1, 5]),
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(m.test_memoryview_from_buffer, (True,), 'H', [2, 7, 1, 8]),
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(m.test_memoryview_from_buffer_nativeformat, (), '@i', [4, 7, 5]),
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])
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def test_memoryview(method, args, fmt, expected_view):
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view = method(*args)
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assert isinstance(view, memoryview)
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assert view.format == fmt
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if isinstance(expected_view, bytes) or not env.PY2:
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view_as_list = list(view)
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else:
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# Using max to pick non-zero byte (big-endian vs little-endian).
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view_as_list = [max([ord(c) for c in s]) for s in view]
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assert view_as_list == list(expected_view)
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@pytest.mark.xfail("env.PYPY", reason="getrefcount is not available")
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@pytest.mark.parametrize('method', [
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m.test_memoryview_object,
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m.test_memoryview_buffer_info,
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])
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def test_memoryview_refcount(method):
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buf = b'\x0a\x0b\x0c\x0d'
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ref_before = sys.getrefcount(buf)
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view = method(buf)
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ref_after = sys.getrefcount(buf)
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assert ref_before < ref_after
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assert list(view) == list(buf)
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def test_memoryview_from_buffer_empty_shape():
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view = m.test_memoryview_from_buffer_empty_shape()
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assert isinstance(view, memoryview)
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assert view.format == 'B'
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if env.PY2:
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# Python 2 behavior is weird, but Python 3 (the future) is fine.
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# PyPy3 has <memoryview, while CPython 2 has <memory
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assert bytes(view).startswith(b'<memory')
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else:
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assert bytes(view) == b''
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def test_test_memoryview_from_buffer_invalid_strides():
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with pytest.raises(RuntimeError):
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m.test_memoryview_from_buffer_invalid_strides()
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def test_test_memoryview_from_buffer_nullptr():
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if env.PY2:
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m.test_memoryview_from_buffer_nullptr()
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else:
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with pytest.raises(ValueError):
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m.test_memoryview_from_buffer_nullptr()
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@pytest.mark.skipif("env.PY2")
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def test_memoryview_from_memory():
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view = m.test_memoryview_from_memory()
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assert isinstance(view, memoryview)
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assert view.format == 'B'
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assert bytes(view) == b'\xff\xe1\xab\x37'
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def test_builtin_functions():
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assert m.get_len([i for i in range(42)]) == 42
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with pytest.raises(TypeError) as exc_info:
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m.get_len(i for i in range(42))
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assert str(exc_info.value) in ["object of type 'generator' has no len()",
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"'generator' has no length"] # PyPy
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