mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-30 00:47:12 +00:00
3f589379ec
This commit rewrites the examples that look for constructor/destructor calls to do so via static variable tracking rather than output parsing. The added ConstructorStats class provides methods to keep track of constructors and destructors, number of default/copy/move constructors, and number of copy/move assignments. It also provides a mechanism for storing values (e.g. for value construction), and then allows all of this to be checked at the end of a test by getting the statistics for a C++ (or python mapping) class. By not relying on the precise pattern of constructions/destructions, but rather simply ensuring that every construction is matched with a destruction on the same object, we ensure that everything that gets created also gets destroyed as expected. This replaces all of the various "std::cout << whatever" code in constructors/destructors with `print_created(this)`/`print_destroyed(this)`/etc. functions which provide similar output, but now has a unified format across the different examples, including a new ### prefix that makes mixed example output and lifecycle events easier to distinguish. With this change, relaxed mode is no longer needed, which enables testing for proper destruction under MSVC, and under any other compiler that generates code calling extra constructors, or optimizes away any constructors. GCC/clang are used as the baseline for move constructors; the tests are adapted to allow more move constructors to be evoked (but other types are constructors much have matching counts). This commit also disables output buffering of tests, as the buffering sometimes results in C++ output ending up in the middle of python output (or vice versa), depending on the OS/python version.
94 lines
2.5 KiB
Python
Executable File
94 lines
2.5 KiB
Python
Executable File
#!/usr/bin/env python
|
|
from __future__ import print_function
|
|
from functools import partial
|
|
import sys
|
|
sys.path.append('.')
|
|
|
|
from example import Pet
|
|
from example import Dog
|
|
from example import Rabbit
|
|
from example import dog_bark
|
|
from example import pet_print
|
|
|
|
polly = Pet('Polly', 'parrot')
|
|
molly = Dog('Molly')
|
|
roger = Rabbit('Rabbit')
|
|
print(roger.name() + " is a " + roger.species())
|
|
pet_print(roger)
|
|
print(polly.name() + " is a " + polly.species())
|
|
pet_print(polly)
|
|
print(molly.name() + " is a " + molly.species())
|
|
pet_print(molly)
|
|
dog_bark(molly)
|
|
try:
|
|
dog_bark(polly)
|
|
except Exception as e:
|
|
print('The following error is expected: ' + str(e))
|
|
|
|
from example import test_callback1
|
|
from example import test_callback2
|
|
from example import test_callback3
|
|
from example import test_callback4
|
|
from example import test_callback5
|
|
from example import test_cleanup
|
|
|
|
def func1():
|
|
print('Callback function 1 called!')
|
|
|
|
def func2(a, b, c, d):
|
|
print('Callback function 2 called : ' + str(a) + ", " + str(b) + ", " + str(c) + ", "+ str(d))
|
|
return d
|
|
|
|
def func3(a):
|
|
print('Callback function 3 called : ' + str(a))
|
|
|
|
print(test_callback1(func1))
|
|
print(test_callback2(func2))
|
|
print(test_callback1(partial(func2, "Hello", "from", "partial", "object")))
|
|
print(test_callback1(partial(func3, "Partial object with one argument")))
|
|
|
|
test_callback3(lambda i: i + 1)
|
|
f = test_callback4()
|
|
print("func(43) = %i" % f(43))
|
|
f = test_callback5()
|
|
print("func(number=43) = %i" % f(number=43))
|
|
|
|
test_cleanup()
|
|
|
|
from example import payload_cstats
|
|
cstats = payload_cstats()
|
|
print("Payload instances not destroyed:", cstats.alive())
|
|
print("Copy constructions:", cstats.copy_constructions)
|
|
print("Move constructions:", cstats.move_constructions >= 1)
|
|
|
|
from example import dummy_function
|
|
from example import dummy_function2
|
|
from example import test_dummy_function
|
|
from example import roundtrip
|
|
|
|
test_dummy_function(dummy_function)
|
|
test_dummy_function(roundtrip(dummy_function))
|
|
test_dummy_function(lambda x: x + 2)
|
|
|
|
try:
|
|
test_dummy_function(dummy_function2)
|
|
print("Problem!")
|
|
except Exception as e:
|
|
if 'Incompatible function arguments' in str(e):
|
|
print("All OK!")
|
|
else:
|
|
print("Problem!")
|
|
|
|
try:
|
|
test_dummy_function(lambda x, y: x + y)
|
|
print("Problem!")
|
|
except Exception as e:
|
|
if 'missing 1 required positional argument' in str(e) or \
|
|
'takes exactly 2 arguments' in str(e):
|
|
print("All OK!")
|
|
else:
|
|
print("Problem!")
|
|
|
|
print(test_callback3.__doc__)
|
|
print(test_callback4.__doc__)
|