/* * QEMU low level functions * * Copyright (c) 2003 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "config-host.h" #include #include #include #include #include #include #ifdef HOST_SOLARIS #include #include #endif #if defined(USE_KQEMU) #include "vl.h" #endif #ifdef _WIN32 #include #elif defined(_BSD) #include #else #include #endif void *get_mmap_addr(unsigned long size) { return NULL; } void qemu_free(void *ptr) { free(ptr); } void *qemu_malloc(size_t size) { return malloc(size); } #if defined(_WIN32) void *qemu_memalign(size_t alignment, size_t size) { return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE); } void *qemu_vmalloc(size_t size) { /* FIXME: this is not exactly optimal solution since VirtualAlloc has 64Kb granularity, but at least it guarantees us that the memory is page aligned. */ return VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE); } void qemu_vfree(void *ptr) { VirtualFree(ptr, 0, MEM_RELEASE); } #else #if defined(USE_KQEMU) #include #include #include void *kqemu_vmalloc(size_t size) { static int phys_ram_fd = -1; static int phys_ram_size = 0; const char *tmpdir; char phys_ram_file[1024]; void *ptr; #ifdef HOST_SOLARIS struct statvfs stfs; #else struct statfs stfs; #endif if (phys_ram_fd < 0) { tmpdir = getenv("QEMU_TMPDIR"); if (!tmpdir) #ifdef HOST_SOLARIS tmpdir = "/tmp"; if (statvfs(tmpdir, &stfs) == 0) { #else tmpdir = "/dev/shm"; if (statfs(tmpdir, &stfs) == 0) { #endif int64_t free_space; int ram_mb; extern int ram_size; free_space = (int64_t)stfs.f_bavail * stfs.f_bsize; if ((ram_size + 8192 * 1024) >= free_space) { ram_mb = (ram_size / (1024 * 1024)); fprintf(stderr, "You do not have enough space in '%s' for the %d MB of QEMU virtual RAM.\n", tmpdir, ram_mb); if (strcmp(tmpdir, "/dev/shm") == 0) { fprintf(stderr, "To have more space available provided you have enough RAM and swap, do as root:\n" "umount /dev/shm\n" "mount -t tmpfs -o size=%dm none /dev/shm\n", ram_mb + 16); } else { fprintf(stderr, "Use the '-m' option of QEMU to diminish the amount of virtual RAM or use the\n" "QEMU_TMPDIR environment variable to set another directory where the QEMU\n" "temporary RAM file will be opened.\n"); } fprintf(stderr, "Or disable the accelerator module with -no-kqemu\n"); exit(1); } } snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX", tmpdir); phys_ram_fd = mkstemp(phys_ram_file); if (phys_ram_fd < 0) { fprintf(stderr, "warning: could not create temporary file in '%s'.\n" "Use QEMU_TMPDIR to select a directory in a tmpfs filesystem.\n" "Using '/tmp' as fallback.\n", tmpdir); snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/qemuXXXXXX", "/tmp"); phys_ram_fd = mkstemp(phys_ram_file); if (phys_ram_fd < 0) { fprintf(stderr, "Could not create temporary memory file '%s'\n", phys_ram_file); exit(1); } } unlink(phys_ram_file); } size = (size + 4095) & ~4095; ftruncate(phys_ram_fd, phys_ram_size + size); ptr = mmap(NULL, size, PROT_WRITE | PROT_READ, MAP_SHARED, phys_ram_fd, phys_ram_size); if (ptr == MAP_FAILED) { fprintf(stderr, "Could not map physical memory\n"); exit(1); } phys_ram_size += size; return ptr; } void kqemu_vfree(void *ptr) { /* may be useful some day, but currently we do not need to free */ } #endif void *qemu_memalign(size_t alignment, size_t size) { #if defined(_POSIX_C_SOURCE) && !defined(__sun__) int ret; void *ptr; ret = posix_memalign(&ptr, alignment, size); if (ret != 0) return NULL; return ptr; #elif defined(_BSD) return valloc(size); #else return memalign(alignment, size); #endif } /* alloc shared memory pages */ void *qemu_vmalloc(size_t size) { #if defined(USE_KQEMU) if (kqemu_allowed) return kqemu_vmalloc(size); #endif #ifdef _BSD return valloc(size); #else return memalign(4096, size); #endif } void qemu_vfree(void *ptr) { #if defined(USE_KQEMU) if (kqemu_allowed) kqemu_vfree(ptr); #endif free(ptr); } #endif void *qemu_mallocz(size_t size) { void *ptr; ptr = qemu_malloc(size); if (!ptr) return NULL; memset(ptr, 0, size); return ptr; } char *qemu_strdup(const char *str) { char *ptr; ptr = qemu_malloc(strlen(str) + 1); if (!ptr) return NULL; strcpy(ptr, str); return ptr; } a> 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507
# -*- coding: utf-8 -*-
import pytest

import env  # noqa: F401

from pybind11_tests import methods_and_attributes as m
from pybind11_tests import ConstructorStats


def test_methods_and_attributes():
    instance1 = m.ExampleMandA()
    instance2 = m.ExampleMandA(32)

    instance1.add1(instance2)
    instance1.add2(instance2)
    instance1.add3(instance2)
    instance1.add4(instance2)
    instance1.add5(instance2)
    instance1.add6(32)
    instance1.add7(32)
    instance1.add8(32)
    instance1.add9(32)
    instance1.add10(32)

    assert str(instance1) == "ExampleMandA[value=320]"
    assert str(instance2) == "ExampleMandA[value=32]"
    assert str(instance1.self1()) == "ExampleMandA[value=320]"
    assert str(instance1.self2()) == "ExampleMandA[value=320]"
    assert str(instance1.self3()) == "ExampleMandA[value=320]"
    assert str(instance1.self4()) == "ExampleMandA[value=320]"
    assert str(instance1.self5()) == "ExampleMandA[value=320]"

    assert instance1.internal1() == 320
    assert instance1.internal2() == 320
    assert instance1.internal3() == 320
    assert instance1.internal4() == 320
    assert instance1.internal5() == 320

    assert instance1.overloaded() == "()"
    assert instance1.overloaded(0) == "(int)"
    assert instance1.overloaded(1, 1.0) == "(int, float)"
    assert instance1.overloaded(2.0, 2) == "(float, int)"
    assert instance1.overloaded(3, 3) == "(int, int)"
    assert instance1.overloaded(4.0, 4.0) == "(float, float)"
    assert instance1.overloaded_const(-3) == "(int) const"
    assert instance1.overloaded_const(5, 5.0) == "(int, float) const"
    assert instance1.overloaded_const(6.0, 6) == "(float, int) const"
    assert instance1.overloaded_const(7, 7) == "(int, int) const"
    assert instance1.overloaded_const(8.0, 8.0) == "(float, float) const"
    assert instance1.overloaded_float(1, 1) == "(float, float)"
    assert instance1.overloaded_float(1, 1.0) == "(float, float)"
    assert instance1.overloaded_float(1.0, 1) == "(float, float)"
    assert instance1.overloaded_float(1.0, 1.0) == "(float, float)"

    assert instance1.value == 320
    instance1.value = 100
    assert str(instance1) == "ExampleMandA[value=100]"

    cstats = ConstructorStats.get(m.ExampleMandA)
    assert cstats.alive() == 2
    del instance1, instance2
    assert cstats.alive() == 0
    assert cstats.values() == ["32"]
    assert cstats.default_constructions == 1
    assert cstats.copy_constructions == 2
    assert cstats.move_constructions >= 2
    assert cstats.copy_assignments == 0
    assert cstats.move_assignments == 0


def test_copy_method():
    """Issue #443: calling copied methods fails in Python 3"""

    m.ExampleMandA.add2c = m.ExampleMandA.add2
    m.ExampleMandA.add2d = m.ExampleMandA.add2b
    a = m.ExampleMandA(123)
    assert a.value == 123
    a.add2(m.ExampleMandA(-100))
    assert a.value == 23
    a.add2b(m.ExampleMandA(20))
    assert a.value == 43
    a.add2c(m.ExampleMandA(6))
    assert a.value == 49
    a.add2d(m.ExampleMandA(-7))
    assert a.value == 42


def test_properties():
    instance = m.TestProperties()

    assert instance.def_readonly == 1
    with pytest.raises(AttributeError):
        instance.def_readonly = 2

    instance.def_readwrite = 2
    assert instance.def_readwrite == 2

    assert instance.def_property_readonly == 2
    with pytest.raises(AttributeError):
        instance.def_property_readonly = 3

    instance.def_property = 3
    assert instance.def_property == 3

    with pytest.raises(AttributeError) as excinfo:
        dummy = instance.def_property_writeonly  # noqa: F841 unused var
    assert "unreadable attribute" in str(excinfo.value)

    instance.def_property_writeonly = 4
    assert instance.def_property_readonly == 4

    with pytest.raises(AttributeError) as excinfo:
        dummy = instance.def_property_impossible  # noqa: F841 unused var
    assert "unreadable attribute" in str(excinfo.value)

    with pytest.raises(AttributeError) as excinfo:
        instance.def_property_impossible = 5
    assert "can't set attribute" in str(excinfo.value)


def test_static_properties():
    assert m.TestProperties.def_readonly_static == 1
    with pytest.raises(AttributeError) as excinfo:
        m.TestProperties.def_readonly_static = 2
    assert "can't set attribute" in str(excinfo.value)

    m.TestProperties.def_readwrite_static = 2
    assert m.TestProperties.def_readwrite_static == 2

    with pytest.raises(AttributeError) as excinfo:
        dummy = m.TestProperties.def_writeonly_static  # noqa: F841 unused var
    assert "unreadable attribute" in str(excinfo.value)

    m.TestProperties.def_writeonly_static = 3
    assert m.TestProperties.def_readonly_static == 3

    assert m.TestProperties.def_property_readonly_static == 3
    with pytest.raises(AttributeError) as excinfo:
        m.TestProperties.def_property_readonly_static = 99
    assert "can't set attribute" in str(excinfo.value)

    m.TestProperties.def_property_static = 4
    assert m.TestProperties.def_property_static == 4

    with pytest.raises(AttributeError) as excinfo:
        dummy = m.TestProperties.def_property_writeonly_static
    assert "unreadable attribute" in str(excinfo.value)

    m.TestProperties.def_property_writeonly_static = 5
    assert m.TestProperties.def_property_static == 5

    # Static property read and write via instance
    instance = m.TestProperties()

    m.TestProperties.def_readwrite_static = 0
    assert m.TestProperties.def_readwrite_static == 0
    assert instance.def_readwrite_static == 0

    instance.def_readwrite_static = 2
    assert m.TestProperties.def_readwrite_static == 2
    assert instance.def_readwrite_static == 2

    with pytest.raises(AttributeError) as excinfo:
        dummy = instance.def_property_writeonly_static  # noqa: F841 unused var
    assert "unreadable attribute" in str(excinfo.value)

    instance.def_property_writeonly_static = 4
    assert instance.def_property_static == 4

    # It should be possible to override properties in derived classes
    assert m.TestPropertiesOverride().def_readonly == 99
    assert m.TestPropertiesOverride.def_readonly_static == 99

    # Only static attributes can be deleted
    del m.TestPropertiesOverride.def_readonly_static
    assert (
        hasattr(m.TestPropertiesOverride, "def_readonly_static")
        and m.TestPropertiesOverride.def_readonly_static
        is m.TestProperties.def_readonly_static
    )
    assert "def_readonly_static" not in m.TestPropertiesOverride.__dict__
    properties_override = m.TestPropertiesOverride()
    with pytest.raises(AttributeError) as excinfo:
        del properties_override.def_readonly
    assert "can't delete attribute" in str(excinfo.value)


def test_static_cls():
    """Static property getter and setters expect the type object as the their only argument"""

    instance = m.TestProperties()
    assert m.TestProperties.static_cls is m.TestProperties
    assert instance.static_cls is m.TestProperties

    def check_self(self):
        assert self is m.TestProperties

    m.TestProperties.static_cls = check_self
    instance.static_cls = check_self


def test_metaclass_override():
    """Overriding pybind11's default metaclass changes the behavior of `static_property`"""

    assert type(m.ExampleMandA).__name__ == "pybind11_type"
    assert type(m.MetaclassOverride).__name__ == "type"

    assert m.MetaclassOverride.readonly == 1
    assert (
        type(m.MetaclassOverride.__dict__["readonly"]).__name__
        == "pybind11_static_property"
    )

    # Regular `type` replaces the property instead of calling `__set__()`
    m.MetaclassOverride.readonly = 2
    assert m.MetaclassOverride.readonly == 2
    assert isinstance(m.MetaclassOverride.__dict__["readonly"], int)


def test_no_mixed_overloads():
    from pybind11_tests import debug_enabled

    with pytest.raises(RuntimeError) as excinfo:
        m.ExampleMandA.add_mixed_overloads1()
    assert str(
        excinfo.value
    ) == "overloading a method with both static and instance methods is not supported; " + (
        "compile in debug mode for more details"
        if not debug_enabled
        else "error while attempting to bind static method ExampleMandA.overload_mixed1"
        "(arg0: float) -> str"
    )

    with pytest.raises(RuntimeError) as excinfo:
        m.ExampleMandA.add_mixed_overloads2()
    assert str(
        excinfo.value
    ) == "overloading a method with both static and instance methods is not supported; " + (
        "compile in debug mode for more details"
        if not debug_enabled
        else "error while attempting to bind instance method ExampleMandA.overload_mixed2"
        "(self: pybind11_tests.methods_and_attributes.ExampleMandA, arg0: int, arg1: int)"
        " -> str"
    )


@pytest.mark.parametrize("access", ["ro", "rw", "static_ro", "static_rw"])
def test_property_return_value_policies(access):
    if not access.startswith("static"):
        obj = m.TestPropRVP()
    else:
        obj = m.TestPropRVP

    ref = getattr(obj, access + "_ref")
    assert ref.value == 1
    ref.value = 2
    assert getattr(obj, access + "_ref").value == 2
    ref.value = 1  # restore original value for static properties

    copy = getattr(obj, access + "_copy")
    assert copy.value == 1
    copy.value = 2
    assert getattr(obj, access + "_copy").value == 1

    copy = getattr(obj, access + "_func")
    assert copy.value == 1
    copy.value = 2
    assert getattr(obj, access + "_func").value == 1


def test_property_rvalue_policy():
    """When returning an rvalue, the return value policy is automatically changed from
    `reference(_internal)` to `move`. The following would not work otherwise."""

    instance = m.TestPropRVP()
    o = instance.rvalue
    assert o.value == 1

    os = m.TestPropRVP.static_rvalue
    assert os.value == 1


# https://foss.heptapod.net/pypy/pypy/-/issues/2447
@pytest.mark.xfail("env.PYPY")
def test_dynamic_attributes():
    instance = m.DynamicClass()
    assert not hasattr(instance, "foo")
    assert "foo" not in dir(instance)

    # Dynamically add attribute
    instance.foo = 42
    assert hasattr(instance, "foo")
    assert instance.foo == 42
    assert "foo" in dir(instance)

    # __dict__ should be accessible and replaceable
    assert "foo" in instance.__dict__
    instance.__dict__ = {"bar": True}
    assert not hasattr(instance, "foo")
    assert hasattr(instance, "bar")

    with pytest.raises(TypeError) as excinfo:
        instance.__dict__ = []
    assert str(excinfo.value) == "__dict__ must be set to a dictionary, not a 'list'"

    cstats = ConstructorStats.get(m.DynamicClass)
    assert cstats.alive() == 1
    del instance
    assert cstats.alive() == 0

    # Derived classes should work as well
    class PythonDerivedDynamicClass(m.DynamicClass):
        pass

    for cls in m.CppDerivedDynamicClass, PythonDerivedDynamicClass:
        derived = cls()
        derived.foobar = 100
        assert derived.foobar == 100

        assert cstats.alive() == 1
        del derived
        assert cstats.alive() == 0


# https://foss.heptapod.net/pypy/pypy/-/issues/2447
@pytest.mark.xfail("env.PYPY")
def test_cyclic_gc():
    # One object references itself
    instance = m.DynamicClass()
    instance.circular_reference = instance

    cstats = ConstructorStats.get(m.DynamicClass)
    assert cstats.alive() == 1
    del instance
    assert cstats.alive() == 0

    # Two object reference each other
    i1 = m.DynamicClass()
    i2 = m.DynamicClass()
    i1.cycle = i2
    i2.cycle = i1

    assert cstats.alive() == 2
    del i1, i2
    assert cstats.alive() == 0


def test_bad_arg_default(msg):
    from pybind11_tests import debug_enabled

    with pytest.raises(RuntimeError) as excinfo:
        m.bad_arg_def_named()
    assert msg(excinfo.value) == (
        "arg(): could not convert default argument 'a: UnregisteredType' in function "
        "'should_fail' into a Python object (type not registered yet?)"
        if debug_enabled
        else "arg(): could not convert default argument into a Python object (type not registered "
        "yet?). Compile in debug mode for more information."
    )

    with pytest.raises(RuntimeError) as excinfo:
        m.bad_arg_def_unnamed()
    assert msg(excinfo.value) == (
        "arg(): could not convert default argument 'UnregisteredType' in function "
        "'should_fail' into a Python object (type not registered yet?)"
        if debug_enabled
        else "arg(): could not convert default argument into a Python object (type not registered "
        "yet?). Compile in debug mode for more information."
    )


def test_accepts_none(msg):
    a = m.NoneTester()
    assert m.no_none1(a) == 42
    assert m.no_none2(a) == 42
    assert m.no_none3(a) == 42
    assert m.no_none4(a) == 42
    assert m.no_none5(a) == 42
    assert m.ok_none1(a) == 42
    assert m.ok_none2(a) == 42
    assert m.ok_none3(a) == 42
    assert m.ok_none4(a) == 42
    assert m.ok_none5(a) == 42

    with pytest.raises(TypeError) as excinfo:
        m.no_none1(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none2(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none3(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none4(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none5(None)
    assert "incompatible function arguments" in str(excinfo.value)

    # The first one still raises because you can't pass None as a lvalue reference arg:
    with pytest.raises(TypeError) as excinfo:
        assert m.ok_none1(None) == -1
    assert (
        msg(excinfo.value)
        == """
        ok_none1(): incompatible function arguments. The following argument types are supported:
            1. (arg0: m.methods_and_attributes.NoneTester) -> int

        Invoked with: None
    """
    )

    # The rest take the argument as pointer or holder, and accept None:
    assert m.ok_none2(None) == -1
    assert m.ok_none3(None) == -1
    assert m.ok_none4(None) == -1
    assert m.ok_none5(None) == -1

    with pytest.raises(TypeError) as excinfo:
        m.no_none_kwarg(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none_kwarg(a=None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none_kwarg_kw_only(None)
    assert "incompatible function arguments" in str(excinfo.value)
    with pytest.raises(TypeError) as excinfo:
        m.no_none_kwarg_kw_only(a=None)
    assert "incompatible function arguments" in str(excinfo.value)


def test_str_issue(msg):
    """#283: __str__ called on uninitialized instance when constructor arguments invalid"""

    assert str(m.StrIssue(3)) == "StrIssue[3]"

    with pytest.raises(TypeError) as excinfo:
        str(m.StrIssue("no", "such", "constructor"))
    assert (
        msg(excinfo.value)
        == """
        __init__(): incompatible constructor arguments. The following argument types are supported:
            1. m.methods_and_attributes.StrIssue(arg0: int)
            2. m.methods_and_attributes.StrIssue()

        Invoked with: 'no', 'such', 'constructor'
    """
    )


def test_unregistered_base_implementations():
    a = m.RegisteredDerived()
    a.do_nothing()
    assert a.rw_value == 42
    assert a.ro_value == 1.25
    a.rw_value += 5
    assert a.sum() == 48.25
    a.increase_value()
    assert a.rw_value == 48
    assert a.ro_value == 1.5
    assert a.sum() == 49.5
    assert a.rw_value_prop == 48
    a.rw_value_prop += 1
    assert a.rw_value_prop == 49
    a.increase_value()
    assert a.ro_value_prop == 1.75


def test_ref_qualified():
    """Tests that explicit lvalue ref-qualified methods can be called just like their
    non ref-qualified counterparts."""

    r = m.RefQualified()
    assert r.value == 0
    r.refQualified(17)
    assert r.value == 17
    assert r.constRefQualified(23) == 40


def test_overload_ordering():
    "Check to see if the normal overload order (first defined) and prepend overload order works"
    assert m.overload_order("string") == 1
    assert m.overload_order(0) == 4

    # Different for Python 2 vs. 3
    uni_name = type(u"").__name__

    assert "1. overload_order(arg0: int) -> int" in m.overload_order.__doc__
    assert (
        "2. overload_order(arg0: {}) -> int".format(uni_name)
        in m.overload_order.__doc__
    )
    assert (
        "3. overload_order(arg0: {}) -> int".format(uni_name)
        in m.overload_order.__doc__
    )
    assert "4. overload_order(arg0: int) -> int" in m.overload_order.__doc__

    with pytest.raises(TypeError) as err:
        m.overload_order(1.1)

    assert "1. (arg0: int) -> int" in str(err.value)
    assert "2. (arg0: {}) -> int".format(uni_name) in str(err.value)
    assert "3. (arg0: {}) -> int".format(uni_name) in str(err.value)
    assert "4. (arg0: int) -> int" in str(err.value)