mirror of
https://github.com/pybind/pybind11.git
synced 2024-12-01 17:37:15 +00:00
222 lines
7.8 KiB
Python
222 lines
7.8 KiB
Python
# Python < 3 needs this: coding=utf-8
|
||
import pytest
|
||
|
||
from pybind11_tests import builtin_casters as m
|
||
from pybind11_tests import UserType, IncType
|
||
|
||
|
||
def test_simple_string():
|
||
assert m.string_roundtrip("const char *") == "const char *"
|
||
|
||
|
||
def test_unicode_conversion():
|
||
"""Tests unicode conversion and error reporting."""
|
||
assert m.good_utf8_string() == u"Say utf8‽ 🎂 𝐀"
|
||
assert m.good_utf16_string() == u"b‽🎂𝐀z"
|
||
assert m.good_utf32_string() == u"a𝐀🎂‽z"
|
||
assert m.good_wchar_string() == u"a⸘𝐀z"
|
||
|
||
with pytest.raises(UnicodeDecodeError):
|
||
m.bad_utf8_string()
|
||
|
||
with pytest.raises(UnicodeDecodeError):
|
||
m.bad_utf16_string()
|
||
|
||
# These are provided only if they actually fail (they don't when 32-bit and under Python 2.7)
|
||
if hasattr(m, "bad_utf32_string"):
|
||
with pytest.raises(UnicodeDecodeError):
|
||
m.bad_utf32_string()
|
||
if hasattr(m, "bad_wchar_string"):
|
||
with pytest.raises(UnicodeDecodeError):
|
||
m.bad_wchar_string()
|
||
|
||
assert m.u8_Z() == 'Z'
|
||
assert m.u8_eacute() == u'é'
|
||
assert m.u16_ibang() == u'‽'
|
||
assert m.u32_mathbfA() == u'𝐀'
|
||
assert m.wchar_heart() == u'♥'
|
||
|
||
|
||
def test_single_char_arguments():
|
||
"""Tests failures for passing invalid inputs to char-accepting functions"""
|
||
def toobig_message(r):
|
||
return "Character code point not in range({0:#x})".format(r)
|
||
toolong_message = "Expected a character, but multi-character string found"
|
||
|
||
assert m.ord_char(u'a') == 0x61 # simple ASCII
|
||
assert m.ord_char(u'é') == 0xE9 # requires 2 bytes in utf-8, but can be stuffed in a char
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_char(u'Ā') == 0x100 # requires 2 bytes, doesn't fit in a char
|
||
assert str(excinfo.value) == toobig_message(0x100)
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_char(u'ab')
|
||
assert str(excinfo.value) == toolong_message
|
||
|
||
assert m.ord_char16(u'a') == 0x61
|
||
assert m.ord_char16(u'é') == 0xE9
|
||
assert m.ord_char16(u'Ā') == 0x100
|
||
assert m.ord_char16(u'‽') == 0x203d
|
||
assert m.ord_char16(u'♥') == 0x2665
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_char16(u'🎂') == 0x1F382 # requires surrogate pair
|
||
assert str(excinfo.value) == toobig_message(0x10000)
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_char16(u'aa')
|
||
assert str(excinfo.value) == toolong_message
|
||
|
||
assert m.ord_char32(u'a') == 0x61
|
||
assert m.ord_char32(u'é') == 0xE9
|
||
assert m.ord_char32(u'Ā') == 0x100
|
||
assert m.ord_char32(u'‽') == 0x203d
|
||
assert m.ord_char32(u'♥') == 0x2665
|
||
assert m.ord_char32(u'🎂') == 0x1F382
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_char32(u'aa')
|
||
assert str(excinfo.value) == toolong_message
|
||
|
||
assert m.ord_wchar(u'a') == 0x61
|
||
assert m.ord_wchar(u'é') == 0xE9
|
||
assert m.ord_wchar(u'Ā') == 0x100
|
||
assert m.ord_wchar(u'‽') == 0x203d
|
||
assert m.ord_wchar(u'♥') == 0x2665
|
||
if m.wchar_size == 2:
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_wchar(u'🎂') == 0x1F382 # requires surrogate pair
|
||
assert str(excinfo.value) == toobig_message(0x10000)
|
||
else:
|
||
assert m.ord_wchar(u'🎂') == 0x1F382
|
||
with pytest.raises(ValueError) as excinfo:
|
||
assert m.ord_wchar(u'aa')
|
||
assert str(excinfo.value) == toolong_message
|
||
|
||
|
||
def test_bytes_to_string():
|
||
"""Tests the ability to pass bytes to C++ string-accepting functions. Note that this is
|
||
one-way: the only way to return bytes to Python is via the pybind11::bytes class."""
|
||
# Issue #816
|
||
import sys
|
||
byte = bytes if sys.version_info[0] < 3 else str
|
||
|
||
assert m.strlen(byte("hi")) == 2
|
||
assert m.string_length(byte("world")) == 5
|
||
assert m.string_length(byte("a\x00b")) == 3
|
||
assert m.strlen(byte("a\x00b")) == 1 # C-string limitation
|
||
|
||
# passing in a utf8 encoded string should work
|
||
assert m.string_length(u'💩'.encode("utf8")) == 4
|
||
|
||
|
||
@pytest.mark.skipif(not hasattr(m, "has_string_view"), reason="no <string_view>")
|
||
def test_string_view(capture):
|
||
"""Tests support for C++17 string_view arguments and return values"""
|
||
assert m.string_view_chars("Hi") == [72, 105]
|
||
assert m.string_view_chars("Hi 🎂") == [72, 105, 32, 0xf0, 0x9f, 0x8e, 0x82]
|
||
assert m.string_view16_chars("Hi 🎂") == [72, 105, 32, 0xd83c, 0xdf82]
|
||
assert m.string_view32_chars("Hi 🎂") == [72, 105, 32, 127874]
|
||
|
||
assert m.string_view_return() == "utf8 secret 🎂"
|
||
assert m.string_view16_return() == "utf16 secret 🎂"
|
||
assert m.string_view32_return() == "utf32 secret 🎂"
|
||
|
||
with capture:
|
||
m.string_view_print("Hi")
|
||
m.string_view_print("utf8 🎂")
|
||
m.string_view16_print("utf16 🎂")
|
||
m.string_view32_print("utf32 🎂")
|
||
assert capture == """
|
||
Hi 2
|
||
utf8 🎂 9
|
||
utf16 🎂 8
|
||
utf32 🎂 7
|
||
"""
|
||
|
||
with capture:
|
||
m.string_view_print("Hi, ascii")
|
||
m.string_view_print("Hi, utf8 🎂")
|
||
m.string_view16_print("Hi, utf16 🎂")
|
||
m.string_view32_print("Hi, utf32 🎂")
|
||
assert capture == """
|
||
Hi, ascii 9
|
||
Hi, utf8 🎂 13
|
||
Hi, utf16 🎂 12
|
||
Hi, utf32 🎂 11
|
||
"""
|
||
|
||
|
||
def test_tuple(doc):
|
||
"""std::pair <-> tuple & std::tuple <-> tuple"""
|
||
assert m.pair_passthrough((True, "test")) == ("test", True)
|
||
assert m.tuple_passthrough((True, "test", 5)) == (5, "test", True)
|
||
# Any sequence can be cast to a std::pair or std::tuple
|
||
assert m.pair_passthrough([True, "test"]) == ("test", True)
|
||
assert m.tuple_passthrough([True, "test", 5]) == (5, "test", True)
|
||
|
||
assert doc(m.pair_passthrough) == """
|
||
pair_passthrough(arg0: Tuple[bool, str]) -> Tuple[str, bool]
|
||
|
||
Return a pair in reversed order
|
||
"""
|
||
assert doc(m.tuple_passthrough) == """
|
||
tuple_passthrough(arg0: Tuple[bool, str, int]) -> Tuple[int, str, bool]
|
||
|
||
Return a triple in reversed order
|
||
"""
|
||
|
||
|
||
def test_builtins_cast_return_none():
|
||
"""Casters produced with PYBIND11_TYPE_CASTER() should convert nullptr to None"""
|
||
assert m.return_none_string() is None
|
||
assert m.return_none_char() is None
|
||
assert m.return_none_bool() is None
|
||
assert m.return_none_int() is None
|
||
assert m.return_none_float() is None
|
||
|
||
|
||
def test_none_deferred():
|
||
"""None passed as various argument types should defer to other overloads"""
|
||
assert not m.defer_none_cstring("abc")
|
||
assert m.defer_none_cstring(None)
|
||
assert not m.defer_none_custom(UserType())
|
||
assert m.defer_none_custom(None)
|
||
assert m.nodefer_none_void(None)
|
||
|
||
|
||
def test_void_caster():
|
||
assert m.load_nullptr_t(None) is None
|
||
assert m.cast_nullptr_t() is None
|
||
|
||
|
||
def test_reference_wrapper():
|
||
"""std::reference_wrapper for builtin and user types"""
|
||
assert m.refwrap_builtin(42) == 420
|
||
assert m.refwrap_usertype(UserType(42)) == 42
|
||
|
||
with pytest.raises(TypeError) as excinfo:
|
||
m.refwrap_builtin(None)
|
||
assert "incompatible function arguments" in str(excinfo.value)
|
||
|
||
with pytest.raises(TypeError) as excinfo:
|
||
m.refwrap_usertype(None)
|
||
assert "incompatible function arguments" in str(excinfo.value)
|
||
|
||
a1 = m.refwrap_list(copy=True)
|
||
a2 = m.refwrap_list(copy=True)
|
||
assert [x.value for x in a1] == [2, 3]
|
||
assert [x.value for x in a2] == [2, 3]
|
||
assert not a1[0] is a2[0] and not a1[1] is a2[1]
|
||
|
||
b1 = m.refwrap_list(copy=False)
|
||
b2 = m.refwrap_list(copy=False)
|
||
assert [x.value for x in b1] == [1, 2]
|
||
assert [x.value for x in b2] == [1, 2]
|
||
assert b1[0] is b2[0] and b1[1] is b2[1]
|
||
|
||
assert m.refwrap_iiw(IncType(5)) == 5
|
||
assert m.refwrap_call_iiw(IncType(10), m.refwrap_iiw) == [10, 10, 10, 10]
|
||
|
||
|
||
def test_complex_cast():
|
||
"""std::complex casts"""
|
||
assert m.complex_cast(1) == "1.0"
|
||
assert m.complex_cast(2j) == "(0.0, 2.0)"
|