| # 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 utf8β½ π π" |
| assert m.good_utf16_string() == u"bβ½ππz" |
| assert m.good_utf32_string() == u"aππβ½z" |
| assert m.good_wchar_string() == u"aβΈπz" |
| |
| 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'Γ©' |
| assert m.u16_ibang() == u'β½' |
| assert m.u32_mathbfA() == u'π' |
| assert m.wchar_heart() == u'β₯' |
| |
| |
| 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'Γ©') == 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'Δ') == 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'Γ©') == 0xE9 |
| assert m.ord_char16(u'Δ') == 0x100 |
| assert m.ord_char16(u'β½') == 0x203d |
| assert m.ord_char16(u'β₯') == 0x2665 |
| with pytest.raises(ValueError) as excinfo: |
| assert m.ord_char16(u'π') == 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'Γ©') == 0xE9 |
| assert m.ord_char32(u'Δ') == 0x100 |
| assert m.ord_char32(u'β½') == 0x203d |
| assert m.ord_char32(u'β₯') == 0x2665 |
| assert m.ord_char32(u'π') == 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'Γ©') == 0xE9 |
| assert m.ord_wchar(u'Δ') == 0x100 |
| assert m.ord_wchar(u'β½') == 0x203d |
| assert m.ord_wchar(u'β₯') == 0x2665 |
| if m.wchar_size == 2: |
| with pytest.raises(ValueError) as excinfo: |
| assert m.ord_wchar(u'π') == 0x1F382 # requires surrogate pair |
| assert str(excinfo.value) == toobig_message(0x10000) |
| else: |
| assert m.ord_wchar(u'π') == 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'π©'.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 π") == [72, 105, 32, 0xf0, 0x9f, 0x8e, 0x82] |
| assert m.string_view16_chars("Hi π") == [72, 105, 32, 0xd83c, 0xdf82] |
| assert m.string_view32_chars("Hi π") == [72, 105, 32, 127874] |
| |
| assert m.string_view_return() == "utf8 secret π" |
| assert m.string_view16_return() == "utf16 secret π" |
| assert m.string_view32_return() == "utf32 secret π" |
| |
| with capture: |
| m.string_view_print("Hi") |
| m.string_view_print("utf8 π") |
| m.string_view16_print("utf16 π") |
| m.string_view32_print("utf32 π") |
| assert capture == """ |
| Hi 2 |
| utf8 π 9 |
| utf16 π 8 |
| utf32 π 7 |
| """ |
| |
| with capture: |
| m.string_view_print("Hi, ascii") |
| m.string_view_print("Hi, utf8 π") |
| m.string_view16_print("Hi, utf16 π") |
| m.string_view32_print("Hi, utf32 π") |
| assert capture == """ |
| Hi, ascii 9 |
| Hi, utf8 π 13 |
| Hi, utf16 π 12 |
| Hi, utf32 π 11 |
| """ |
| |
| |
| def test_integer_casting(): |
| """Issue #929 - out-of-range integer values shouldn't be accepted""" |
| import sys |
| assert m.i32_str(-1) == "-1" |
| assert m.i64_str(-1) == "-1" |
| assert m.i32_str(2000000000) == "2000000000" |
| assert m.u32_str(2000000000) == "2000000000" |
| if sys.version_info < (3,): |
| assert m.i32_str(long(-1)) == "-1" # noqa: F821 undefined name 'long' |
| assert m.i64_str(long(-1)) == "-1" # noqa: F821 undefined name 'long' |
| assert m.i64_str(long(-999999999999)) == "-999999999999" # noqa: F821 undefined name |
| assert m.u64_str(long(999999999999)) == "999999999999" # noqa: F821 undefined name 'long' |
| else: |
| assert m.i64_str(-999999999999) == "-999999999999" |
| assert m.u64_str(999999999999) == "999999999999" |
| |
| with pytest.raises(TypeError) as excinfo: |
| m.u32_str(-1) |
| assert "incompatible function arguments" in str(excinfo.value) |
| with pytest.raises(TypeError) as excinfo: |
| m.u64_str(-1) |
| assert "incompatible function arguments" in str(excinfo.value) |
| with pytest.raises(TypeError) as excinfo: |
| m.i32_str(-3000000000) |
| assert "incompatible function arguments" in str(excinfo.value) |
| with pytest.raises(TypeError) as excinfo: |
| m.i32_str(3000000000) |
| assert "incompatible function arguments" in str(excinfo.value) |
| |
| if sys.version_info < (3,): |
| with pytest.raises(TypeError) as excinfo: |
| m.u32_str(long(-1)) # noqa: F821 undefined name 'long' |
| assert "incompatible function arguments" in str(excinfo.value) |
| with pytest.raises(TypeError) as excinfo: |
| m.u64_str(long(-1)) # noqa: F821 undefined name 'long' |
| assert "incompatible function arguments" in str(excinfo.value) |
| |
| |
| 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 m.empty_tuple() == () |
| |
| 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 |
| """ |
| |
| assert m.rvalue_pair() == ("rvalue", "rvalue") |
| assert m.lvalue_pair() == ("lvalue", "lvalue") |
| assert m.rvalue_tuple() == ("rvalue", "rvalue", "rvalue") |
| assert m.lvalue_tuple() == ("lvalue", "lvalue", "lvalue") |
| assert m.rvalue_nested() == ("rvalue", ("rvalue", ("rvalue", "rvalue"))) |
| assert m.lvalue_nested() == ("lvalue", ("lvalue", ("lvalue", "lvalue"))) |
| |
| |
| 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)" |
| |
| |
| def test_bool_caster(): |
| """Test bool caster implicit conversions.""" |
| convert, noconvert = m.bool_passthrough, m.bool_passthrough_noconvert |
| |
| def require_implicit(v): |
| pytest.raises(TypeError, noconvert, v) |
| |
| def cant_convert(v): |
| pytest.raises(TypeError, convert, v) |
| |
| # straight up bool |
| assert convert(True) is True |
| assert convert(False) is False |
| assert noconvert(True) is True |
| assert noconvert(False) is False |
| |
| # None requires implicit conversion |
| require_implicit(None) |
| assert convert(None) is False |
| |
| class A(object): |
| def __init__(self, x): |
| self.x = x |
| |
| def __nonzero__(self): |
| return self.x |
| |
| def __bool__(self): |
| return self.x |
| |
| class B(object): |
| pass |
| |
| # Arbitrary objects are not accepted |
| cant_convert(object()) |
| cant_convert(B()) |
| |
| # Objects with __nonzero__ / __bool__ defined can be converted |
| require_implicit(A(True)) |
| assert convert(A(True)) is True |
| assert convert(A(False)) is False |
| |
| |
| @pytest.requires_numpy |
| def test_numpy_bool(): |
| import numpy as np |
| convert, noconvert = m.bool_passthrough, m.bool_passthrough_noconvert |
| |
| # np.bool_ is not considered implicit |
| assert convert(np.bool_(True)) is True |
| assert convert(np.bool_(False)) is False |
| assert noconvert(np.bool_(True)) is True |
| assert noconvert(np.bool_(False)) is False |