cppjit/test/test_pythonization.py at main · compiler-research/cppjit · GitHub

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import sys

import py

from pytest import mark, raises

from support import (

IS_CLANG_REPL,

IS_LINUX_ARM,

IS_MAC,

IS_VALGRIND,

setup_make,

)

currpath = py.path.local(__file__).dirpath()

test_dct = str(currpath.join("cpp/pythonizablesDict"))

def setup_module(mod):

setup_make("pythonizables")

class TestClassPYTHONIZATION:

def setup_class(cls):

cls.test_dct = test_dct

import cppjit

cls.pyzables = cppjit.load_reflection_info(cls.test_dct)

@mark.xfail(condition=IS_MAC, reason="Fails on OSX")

def test00_api(self):

"""Test basic semantics of the pythonization API"""

import cppjit

raises(TypeError, cppjit.py.add_pythonization, 1)

def pythonizor1(klass, name):

pass

def pythonizor2(klass, name):

pass

pythonizor3 = pythonizor1

cppjit.py.add_pythonization(pythonizor1)

assert cppjit.py.remove_pythonization(pythonizor2) == False

assert cppjit.py.remove_pythonization(pythonizor3) == True

def pythonizor(klass, name):

if name == "pyzables::SomeDummy1":

klass.test = 1

cppjit.py.add_pythonization(pythonizor)

assert cppjit.gbl.pyzables.SomeDummy1.test == 1

def pythonizor(klass, name):

if name == "SomeDummy2":

klass.test = 2

cppjit.py.add_pythonization(pythonizor, "pyzables")

# global pythonizors are still run even if namespaced ones available

def pythonizor(klass, name):

if name == "pyzables::SomeDummy2":

klass.test = 3

cppjit.py.add_pythonization(pythonizor)

assert cppjit.gbl.pyzables.SomeDummy2.test == 3

cppjit.cppdef("""

namespace pyzables {

class TObjString {

public:

std::string s;

TObjString(std::string ss) : s(ss) {}

size_t Sizeof() { return s.size() + 1; }

};

}

""")

def root_pythonizor(klass, name):

if name == "pyzables::TObjString":

klass.__len__ = klass.Sizeof

cppjit.py.add_pythonization(root_pythonizor)

assert len(cppjit.gbl.pyzables.TObjString("aap")) == 4 # include '\0'

def test01_size_mapping(self):

"""Use composites to map GetSize() onto buffer returns"""

import cppjit

def set_size(self, buf):

buf.reshape((self.GetN(),))

return buf

cppjit.py.add_pythonization(

cppjit.py.compose_method("NakedBuffers$", "Get[XY]$", set_size), "pyzables"

)

bsize, xval, yval = 3, 2, 5

m = cppjit.gbl.pyzables.NakedBuffers(bsize, xval, yval)

x = m.GetX()

assert len(x) == bsize

assert list(x) == list(map(lambda x: x * xval, range(bsize)))

y = m.GetY()

assert len(y) == bsize

assert list(y) == list(map(lambda x: x * yval, range(bsize)))

def test02_size_mapping_of_templated_method(self):

"""Use composites to map GetSize() onto buffer returns"""

import cppjit

def set_size(self, buf):

buf.reshape((self.GetN(),))

return buf

cppjit.py.add_pythonization(

cppjit.py.compose_method("NakedBuffers2.*Vector.*", "Get[XY]$", set_size),

"pyzables",

)

bsize, xval, yval = 3, 2, 5

m = cppjit.gbl.pyzables.NakedBuffers2[cppjit.gbl.pyzables.Vector](

bsize, xval, yval

)

x = m.GetX()

assert len(x) == bsize

assert list(x) == list(map(lambda x: x * xval, range(bsize)))

y = m.GetY()

assert len(y) == bsize

assert list(y) == list(map(lambda x: x * yval, range(bsize)))

def test03_type_pinning(self):

"""Verify pinnability of returns"""

import cppjit

cppjit.gbl.pyzables.GimeDerived.__creates__ = True

result = cppjit.gbl.pyzables.GimeDerived()

assert type(result) == cppjit.gbl.pyzables.MyDerived

cppjit.py.pin_type(cppjit.gbl.pyzables.MyBase)

assert type(result) == cppjit.gbl.pyzables.MyDerived

def test04_transparency(self):

"""Transparent use of smart pointers"""

import cppjit

Countable = cppjit.gbl.pyzables.Countable

mine = cppjit.gbl.pyzables.mine

assert type(mine) == Countable

assert mine.m_check == 0xCDCDCDCD

assert type(mine.__smartptr__()) == cppjit.gbl.std.shared_ptr(Countable)

assert mine.__smartptr__().get().m_check == 0xCDCDCDCD

assert mine.say_hi() == "Hi!"

@mark.xfail(

run=False,

condition=IS_VALGRIND and IS_LINUX_ARM and IS_CLANG_REPL,

reason="Crashes on Valgind Clang-Repl-ARM",

)

def test05_converters(self):

"""Smart pointer argument passing"""

import cppjit

pz = cppjit.gbl.pyzables

mine = pz.mine

assert 0xCDCDCDCD == pz.pass_mine_rp_ptr(mine)

assert 0xCDCDCDCD == pz.pass_mine_rp_ref(mine)

assert 0xCDCDCDCD == pz.pass_mine_rp(mine)

assert 0xCDCDCDCD == pz.pass_mine_sp_ptr(mine)

assert 0xCDCDCDCD == pz.pass_mine_sp_ref(mine)

assert 0xCDCDCDCD == pz.pass_mine_sp_ptr(mine.__smartptr__())

assert 0xCDCDCDCD == pz.pass_mine_sp_ref(mine.__smartptr__())

assert 0xCDCDCDCD == pz.pass_mine_sp(mine)

assert 0xCDCDCDCD == pz.pass_mine_sp(mine.__smartptr__())

# TODO:

# cppjit.gbl.mine = mine

pz.renew_mine()

@mark.xfail(

run=False,

condition=IS_VALGRIND and IS_LINUX_ARM and IS_CLANG_REPL,

reason="Fails with Valgrind with Clang-Repl ARM",

)

def test06_executors(self):

"""Smart pointer return types"""

import cppjit

pz = cppjit.gbl.pyzables

Countable = pz.Countable

mine = pz.gime_mine_ptr()

assert type(mine) == Countable

assert mine.m_check == 0xCDCDCDCD

assert type(mine.__smartptr__()) == cppjit.gbl.std.shared_ptr(Countable)

assert mine.__smartptr__().get().m_check == 0xCDCDCDCD

assert mine.say_hi() == "Hi!"

mine = pz.gime_mine_ref()

assert type(mine) == Countable

assert mine.m_check == 0xCDCDCDCD

assert type(mine.__smartptr__()) == cppjit.gbl.std.shared_ptr(Countable)

assert mine.__smartptr__().get().m_check == 0xCDCDCDCD

assert mine.say_hi() == "Hi!"

mine = pz.gime_mine()

assert type(mine) == Countable

assert mine.m_check == 0xCDCDCDCD

assert type(mine.__smartptr__()) == cppjit.gbl.std.shared_ptr(Countable)

assert mine.__smartptr__().get().m_check == 0xCDCDCDCD

assert mine.say_hi() == "Hi!"

def test07_creates_flag(self):

"""Effect of creates flag on return type"""

import gc

import cppjit

pz = cppjit.gbl.pyzables

Countable = pz.Countable

gc.collect()

oldcount = Countable.sInstances # there's eg. one global variable

pz.gime_naked_countable.__creates__ = True

for i in range(10):

cnt = pz.gime_naked_countable()

gc.collect()

assert Countable.sInstances == oldcount + 1

del cnt

gc.collect()

assert Countable.sInstances == oldcount

def test08_base_class_pythonization(self):

"""Derived class should not re-pythonize base class pythonization"""

import cppjit

d = cppjit.gbl.pyzables.IndexableDerived()

assert d[0] == 42

assert d[-1] == 42

# skip the IndexErorr test: pythonization for __getitem__[index] < size()

# can not be applied strict enough (instead of an index, this could be an

# associative container, with 'index' a key, not a counter

# raises(IndexError, d.__getitem__, 1)

@mark.xfail(condition=IS_MAC, reason="Fails on OS X")

def test09_cpp_side_pythonization(self):

"""Use of C++ side pythonizations"""

import cppjit

# explicit pythonization

for kls in [

cppjit.gbl.pyzables.WithCallback1,

cppjit.gbl.pyzables.WithCallback2,

w = kls(42)

assert hasattr(w, "GetInt")

assert not hasattr(w, "get_int")

assert w.GetInt() == 42

assert hasattr(w, "SetInt")

assert not hasattr(w, "set_int")

w.SetInt(17)

assert w.GetInt() == 17

assert kls.klass_name == kls.__cpp_name__

# up-the-hierarchy pythonization

w = cppjit.gbl.pyzables.WithCallback3(42)

assert hasattr(w, "GetInt")

assert not hasattr(w, "get_int")

assert w.GetInt() == 2 * 42

assert hasattr(w, "SetInt")

assert not hasattr(w, "set_int")

w.SetInt(17)

assert w.GetInt() == 4 * 17

assert cppjit.gbl.pyzables.WithCallback2.klass_name == "pyzables::WithCallback3"

@mark.xfail(condition=IS_MAC, reason="Fails on OS X")

def test10_shared_ptr_reset(self):

"""Checks that smart pointer types are Pythonized with the special

__smartptr__ member that can also be used to reset the underlying smart

pointer."""

import cppjit

optr = cppjit.gbl.std.make_shared["std::string"]("hello smart pointer")

o2 = cppjit.gbl.std.string()

cppjit._backend.SetOwnership(

o2, False

) # This object will be owned by the smart pointer

optr.__smartptr__().reset(o2)

assert optr == o2

## actual test run

if __name__ == "__main__":

result = run_pytest(__file__) # noqa: F821

sys.exit(result)

cppjit/test/test_pythonization.py at main · compiler-research/cppjit · GitHub

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