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from __future__ import division, absolute_import, print_function
import unittest
import os
import sys
import copy
import platform
import nose
from numpy.testing import *
from numpy import (array, alltrue, ndarray, asarray, can_cast, zeros, dtype,
intp, clongdouble)
from numpy.core.multiarray import typeinfo
import util
wrap = None
def setup():
"""
Build the required testing extension module
"""
global wrap
# Check compiler availability first
if not util.has_c_compiler():
raise nose.SkipTest("No C compiler available")
if wrap is None:
config_code = """
config.add_extension('test_array_from_pyobj_ext',
sources=['wrapmodule.c', 'fortranobject.c'],
define_macros=[])
"""
d = os.path.dirname(__file__)
src = [os.path.join(d, 'src', 'array_from_pyobj', 'wrapmodule.c'),
os.path.join(d, '..', 'src', 'fortranobject.c'),
os.path.join(d, '..', 'src', 'fortranobject.h')]
wrap = util.build_module_distutils(src, config_code,
'test_array_from_pyobj_ext')
def flags_info(arr):
flags = wrap.array_attrs(arr)[6]
return flags2names(flags)
def flags2names(flags):
info = []
for flagname in ['CONTIGUOUS', 'FORTRAN', 'OWNDATA', 'ENSURECOPY',
'ENSUREARRAY', 'ALIGNED', 'NOTSWAPPED', 'WRITEABLE',
'UPDATEIFCOPY', 'BEHAVED', 'BEHAVED_RO',
'CARRAY', 'FARRAY'
]:
if abs(flags) & getattr(wrap, flagname, 0):
info.append(flagname)
return info
class Intent(object):
def __init__(self,intent_list=[]):
self.intent_list = intent_list[:]
flags = 0
for i in intent_list:
if i=='optional':
flags |= wrap.F2PY_OPTIONAL
else:
flags |= getattr(wrap, 'F2PY_INTENT_'+i.upper())
self.flags = flags
def __getattr__(self, name):
name = name.lower()
if name=='in_': name='in'
return self.__class__(self.intent_list+[name])
def __str__(self):
return 'intent(%s)' % (','.join(self.intent_list))
def __repr__(self):
return 'Intent(%r)' % (self.intent_list)
def is_intent(self,*names):
for name in names:
if name not in self.intent_list:
return False
return True
def is_intent_exact(self,*names):
return len(self.intent_list)==len(names) and self.is_intent(*names)
intent = Intent()
_type_names = ['BOOL', 'BYTE', 'UBYTE', 'SHORT', 'USHORT', 'INT', 'UINT',
'LONG', 'ULONG', 'LONGLONG', 'ULONGLONG',
'FLOAT', 'DOUBLE', 'CFLOAT']
_cast_dict = {'BOOL':['BOOL']}
_cast_dict['BYTE'] = _cast_dict['BOOL'] + ['BYTE']
_cast_dict['UBYTE'] = _cast_dict['BOOL'] + ['UBYTE']
_cast_dict['BYTE'] = ['BYTE']
_cast_dict['UBYTE'] = ['UBYTE']
_cast_dict['SHORT'] = _cast_dict['BYTE'] + ['UBYTE', 'SHORT']
_cast_dict['USHORT'] = _cast_dict['UBYTE'] + ['BYTE', 'USHORT']
_cast_dict['INT'] = _cast_dict['SHORT'] + ['USHORT', 'INT']
_cast_dict['UINT'] = _cast_dict['USHORT'] + ['SHORT', 'UINT']
_cast_dict['LONG'] = _cast_dict['INT'] + ['LONG']
_cast_dict['ULONG'] = _cast_dict['UINT'] + ['ULONG']
_cast_dict['LONGLONG'] = _cast_dict['LONG'] + ['LONGLONG']
_cast_dict['ULONGLONG'] = _cast_dict['ULONG'] + ['ULONGLONG']
_cast_dict['FLOAT'] = _cast_dict['SHORT'] + ['USHORT', 'FLOAT']
_cast_dict['DOUBLE'] = _cast_dict['INT'] + ['UINT', 'FLOAT', 'DOUBLE']
_cast_dict['CFLOAT'] = _cast_dict['FLOAT'] + ['CFLOAT']
# 32 bit system malloc typically does not provide the alignment required by
# 16 byte long double types this means the inout intent cannot be satisfied and
# several tests fail as the alignment flag can be randomly true or fals
# when numpy gains an aligned allocator the tests could be enabled again
if ((intp().dtype.itemsize != 4 or clongdouble().dtype.alignment <= 8) and
sys.platform != 'win32'):
_type_names.extend(['LONGDOUBLE', 'CDOUBLE', 'CLONGDOUBLE'])
_cast_dict['LONGDOUBLE'] = _cast_dict['LONG'] + \
['ULONG', 'FLOAT', 'DOUBLE', 'LONGDOUBLE']
_cast_dict['CLONGDOUBLE'] = _cast_dict['LONGDOUBLE'] + \
['CFLOAT', 'CDOUBLE', 'CLONGDOUBLE']
_cast_dict['CDOUBLE'] = _cast_dict['DOUBLE'] + ['CFLOAT', 'CDOUBLE']
class Type(object):
_type_cache = {}
def __new__(cls, name):
if isinstance(name, dtype):
dtype0 = name
name = None
for n, i in typeinfo.items():
if isinstance(i, tuple) and dtype0.type is i[-1]:
name = n
break
obj = cls._type_cache.get(name.upper(), None)
if obj is not None:
return obj
obj = object.__new__(cls)
obj._init(name)
cls._type_cache[name.upper()] = obj
return obj
def _init(self, name):
self.NAME = name.upper()
self.type_num = getattr(wrap, 'NPY_'+self.NAME)
assert_equal(self.type_num, typeinfo[self.NAME][1])
self.dtype = typeinfo[self.NAME][-1]
self.elsize = typeinfo[self.NAME][2] / 8
self.dtypechar = typeinfo[self.NAME][0]
def cast_types(self):
return [self.__class__(_m) for _m in _cast_dict[self.NAME]]
def all_types(self):
return [self.__class__(_m) for _m in _type_names]
def smaller_types(self):
bits = typeinfo[self.NAME][3]
types = []
for name in _type_names:
if typeinfo[name][3]<bits:
types.append(Type(name))
return types
def equal_types(self):
bits = typeinfo[self.NAME][3]
types = []
for name in _type_names:
if name==self.NAME: continue
if typeinfo[name][3]==bits:
types.append(Type(name))
return types
def larger_types(self):
bits = typeinfo[self.NAME][3]
types = []
for name in _type_names:
if typeinfo[name][3]>bits:
types.append(Type(name))
return types
class Array(object):
def __init__(self, typ, dims, intent, obj):
self.type = typ
self.dims = dims
self.intent = intent
self.obj_copy = copy.deepcopy(obj)
self.obj = obj
# arr.dtypechar may be different from typ.dtypechar
self.arr = wrap.call(typ.type_num, dims, intent.flags, obj)
assert_(isinstance(self.arr, ndarray), repr(type(self.arr)))
self.arr_attr = wrap.array_attrs(self.arr)
if len(dims)>1:
if self.intent.is_intent('c'):
assert_(intent.flags & wrap.F2PY_INTENT_C)
assert_(not self.arr.flags['FORTRAN'], repr((self.arr.flags, getattr(obj, 'flags', None))))
assert_(self.arr.flags['CONTIGUOUS'])
assert_(not self.arr_attr[6] & wrap.FORTRAN)
else:
assert_(not intent.flags & wrap.F2PY_INTENT_C)
assert_(self.arr.flags['FORTRAN'])
assert_(not self.arr.flags['CONTIGUOUS'])
assert_(self.arr_attr[6] & wrap.FORTRAN)
if obj is None:
self.pyarr = None
self.pyarr_attr = None
return
if intent.is_intent('cache'):
assert_(isinstance(obj, ndarray), repr(type(obj)))
self.pyarr = array(obj).reshape(*dims).copy()
else:
self.pyarr = array(array(obj,
dtype = typ.dtypechar).reshape(*dims),
order=self.intent.is_intent('c') and 'C' or 'F')
assert_(self.pyarr.dtype == typ, \
repr((self.pyarr.dtype, typ)))
assert_(self.pyarr.flags['OWNDATA'], (obj, intent))
self.pyarr_attr = wrap.array_attrs(self.pyarr)
if len(dims)>1:
if self.intent.is_intent('c'):
assert_(not self.pyarr.flags['FORTRAN'])
assert_(self.pyarr.flags['CONTIGUOUS'])
assert_(not self.pyarr_attr[6] & wrap.FORTRAN)
else:
assert_(self.pyarr.flags['FORTRAN'])
assert_(not self.pyarr.flags['CONTIGUOUS'])
assert_(self.pyarr_attr[6] & wrap.FORTRAN)
assert_(self.arr_attr[1]==self.pyarr_attr[1]) # nd
assert_(self.arr_attr[2]==self.pyarr_attr[2]) # dimensions
if self.arr_attr[1]<=1:
assert_(self.arr_attr[3]==self.pyarr_attr[3],\
repr((self.arr_attr[3], self.pyarr_attr[3],
self.arr.tobytes(), self.pyarr.tobytes()))) # strides
assert_(self.arr_attr[5][-2:]==self.pyarr_attr[5][-2:],\
repr((self.arr_attr[5], self.pyarr_attr[5]))) # descr
assert_(self.arr_attr[6]==self.pyarr_attr[6],\
repr((self.arr_attr[6], self.pyarr_attr[6], flags2names(0*self.arr_attr[6]-self.pyarr_attr[6]), flags2names(self.arr_attr[6]), intent))) # flags
if intent.is_intent('cache'):
assert_(self.arr_attr[5][3]>=self.type.elsize,\
repr((self.arr_attr[5][3], self.type.elsize)))
else:
assert_(self.arr_attr[5][3]==self.type.elsize,\
repr((self.arr_attr[5][3], self.type.elsize)))
assert_(self.arr_equal(self.pyarr, self.arr))
if isinstance(self.obj, ndarray):
if typ.elsize==Type(obj.dtype).elsize:
if not intent.is_intent('copy') and self.arr_attr[1]<=1:
assert_(self.has_shared_memory())
def arr_equal(self, arr1, arr2):
if arr1.shape != arr2.shape:
return False
s = arr1==arr2
return alltrue(s.flatten())
def __str__(self):
return str(self.arr)
def has_shared_memory(self):
"""Check that created array shares data with input array.
"""
if self.obj is self.arr:
return True
if not isinstance(self.obj, ndarray):
return False
obj_attr = wrap.array_attrs(self.obj)
return obj_attr[0]==self.arr_attr[0]
##################################################
class test_intent(unittest.TestCase):
def test_in_out(self):
assert_equal(str(intent.in_.out), 'intent(in,out)')
assert_(intent.in_.c.is_intent('c'))
assert_(not intent.in_.c.is_intent_exact('c'))
assert_(intent.in_.c.is_intent_exact('c', 'in'))
assert_(intent.in_.c.is_intent_exact('in', 'c'))
assert_(not intent.in_.is_intent('c'))
class _test_shared_memory:
num2seq = [1, 2]
num23seq = [[1, 2, 3], [4, 5, 6]]
def test_in_from_2seq(self):
a = self.array([2], intent.in_, self.num2seq)
assert_(not a.has_shared_memory())
def test_in_from_2casttype(self):
for t in self.type.cast_types():
obj = array(self.num2seq, dtype=t.dtype)
a = self.array([len(self.num2seq)], intent.in_, obj)
if t.elsize==self.type.elsize:
assert_(a.has_shared_memory(), repr((self.type.dtype, t.dtype)))
else:
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_inout_2seq(self):
obj = array(self.num2seq, dtype=self.type.dtype)
a = self.array([len(self.num2seq)], intent.inout, obj)
assert_(a.has_shared_memory())
try:
a = self.array([2], intent.in_.inout, self.num2seq)
except TypeError as msg:
if not str(msg).startswith('failed to initialize intent(inout|inplace|cache) array'):
raise
else:
raise SystemError('intent(inout) should have failed on sequence')
def test_f_inout_23seq(self):
obj = array(self.num23seq, dtype=self.type.dtype, order='F')
shape = (len(self.num23seq), len(self.num23seq[0]))
a = self.array(shape, intent.in_.inout, obj)
assert_(a.has_shared_memory())
obj = array(self.num23seq, dtype=self.type.dtype, order='C')
shape = (len(self.num23seq), len(self.num23seq[0]))
try:
a = self.array(shape, intent.in_.inout, obj)
except ValueError as msg:
if not str(msg).startswith('failed to initialize intent(inout) array'):
raise
else:
raise SystemError('intent(inout) should have failed on improper array')
def test_c_inout_23seq(self):
obj = array(self.num23seq, dtype=self.type.dtype)
shape = (len(self.num23seq), len(self.num23seq[0]))
a = self.array(shape, intent.in_.c.inout, obj)
assert_(a.has_shared_memory())
def test_in_copy_from_2casttype(self):
for t in self.type.cast_types():
obj = array(self.num2seq, dtype=t.dtype)
a = self.array([len(self.num2seq)], intent.in_.copy, obj)
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_c_in_from_23seq(self):
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_, self.num23seq)
assert_(not a.has_shared_memory())
def test_in_from_23casttype(self):
for t in self.type.cast_types():
obj = array(self.num23seq, dtype=t.dtype)
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_, obj)
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_f_in_from_23casttype(self):
for t in self.type.cast_types():
obj = array(self.num23seq, dtype=t.dtype, order='F')
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_, obj)
if t.elsize==self.type.elsize:
assert_(a.has_shared_memory(), repr(t.dtype))
else:
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_c_in_from_23casttype(self):
for t in self.type.cast_types():
obj = array(self.num23seq, dtype=t.dtype)
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_.c, obj)
if t.elsize==self.type.elsize:
assert_(a.has_shared_memory(), repr(t.dtype))
else:
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_f_copy_in_from_23casttype(self):
for t in self.type.cast_types():
obj = array(self.num23seq, dtype=t.dtype, order='F')
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_.copy, obj)
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_c_copy_in_from_23casttype(self):
for t in self.type.cast_types():
obj = array(self.num23seq, dtype=t.dtype)
a = self.array([len(self.num23seq), len(self.num23seq[0])],
intent.in_.c.copy, obj)
assert_(not a.has_shared_memory(), repr(t.dtype))
def test_in_cache_from_2casttype(self):
for t in self.type.all_types():
if t.elsize != self.type.elsize:
continue
obj = array(self.num2seq, dtype=t.dtype)
shape = (len(self.num2seq),)
a = self.array(shape, intent.in_.c.cache, obj)
assert_(a.has_shared_memory(), repr(t.dtype))
a = self.array(shape, intent.in_.cache, obj)
assert_(a.has_shared_memory(), repr(t.dtype))
obj = array(self.num2seq, dtype=t.dtype, order='F')
a = self.array(shape, intent.in_.c.cache, obj)
assert_(a.has_shared_memory(), repr(t.dtype))
a = self.array(shape, intent.in_.cache, obj)
assert_(a.has_shared_memory(), repr(t.dtype))
try:
a = self.array(shape, intent.in_.cache, obj[::-1])
except ValueError as msg:
if not str(msg).startswith('failed to initialize intent(cache) array'):
raise
else:
raise SystemError('intent(cache) should have failed on multisegmented array')
def test_in_cache_from_2casttype_failure(self):
for t in self.type.all_types():
if t.elsize >= self.type.elsize:
continue
obj = array(self.num2seq, dtype=t.dtype)
shape = (len(self.num2seq),)
try:
a = self.array(shape, intent.in_.cache, obj)
except ValueError as msg:
if not str(msg).startswith('failed to initialize intent(cache) array'):
raise
else:
raise SystemError('intent(cache) should have failed on smaller array')
def test_cache_hidden(self):
shape = (2,)
a = self.array(shape, intent.cache.hide, None)
assert_(a.arr.shape==shape)
shape = (2, 3)
a = self.array(shape, intent.cache.hide, None)
assert_(a.arr.shape==shape)
shape = (-1, 3)
try:
a = self.array(shape, intent.cache.hide, None)
except ValueError as msg:
if not str(msg).startswith('failed to create intent(cache|hide)|optional array'):
raise
else:
raise SystemError('intent(cache) should have failed on undefined dimensions')
def test_hidden(self):
shape = (2,)
a = self.array(shape, intent.hide, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
shape = (2, 3)
a = self.array(shape, intent.hide, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
assert_(a.arr.flags['FORTRAN'] and not a.arr.flags['CONTIGUOUS'])
shape = (2, 3)
a = self.array(shape, intent.c.hide, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
assert_(not a.arr.flags['FORTRAN'] and a.arr.flags['CONTIGUOUS'])
shape = (-1, 3)
try:
a = self.array(shape, intent.hide, None)
except ValueError as msg:
if not str(msg).startswith('failed to create intent(cache|hide)|optional array'):
raise
else:
raise SystemError('intent(hide) should have failed on undefined dimensions')
def test_optional_none(self):
shape = (2,)
a = self.array(shape, intent.optional, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
shape = (2, 3)
a = self.array(shape, intent.optional, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
assert_(a.arr.flags['FORTRAN'] and not a.arr.flags['CONTIGUOUS'])
shape = (2, 3)
a = self.array(shape, intent.c.optional, None)
assert_(a.arr.shape==shape)
assert_(a.arr_equal(a.arr, zeros(shape, dtype=self.type.dtype)))
assert_(not a.arr.flags['FORTRAN'] and a.arr.flags['CONTIGUOUS'])
def test_optional_from_2seq(self):
obj = self.num2seq
shape = (len(obj),)
a = self.array(shape, intent.optional, obj)
assert_(a.arr.shape==shape)
assert_(not a.has_shared_memory())
def test_optional_from_23seq(self):
obj = self.num23seq
shape = (len(obj), len(obj[0]))
a = self.array(shape, intent.optional, obj)
assert_(a.arr.shape==shape)
assert_(not a.has_shared_memory())
a = self.array(shape, intent.optional.c, obj)
assert_(a.arr.shape==shape)
assert_(not a.has_shared_memory())
def test_inplace(self):
obj = array(self.num23seq, dtype=self.type.dtype)
assert_(not obj.flags['FORTRAN'] and obj.flags['CONTIGUOUS'])
shape = obj.shape
a = self.array(shape, intent.inplace, obj)
assert_(obj[1][2]==a.arr[1][2], repr((obj, a.arr)))
a.arr[1][2]=54
assert_(obj[1][2]==a.arr[1][2]==array(54, dtype=self.type.dtype), repr((obj, a.arr)))
assert_(a.arr is obj)
assert_(obj.flags['FORTRAN']) # obj attributes are changed inplace!
assert_(not obj.flags['CONTIGUOUS'])
def test_inplace_from_casttype(self):
for t in self.type.cast_types():
if t is self.type:
continue
obj = array(self.num23seq, dtype=t.dtype)
assert_(obj.dtype.type==t.dtype)
assert_(obj.dtype.type is not self.type.dtype)
assert_(not obj.flags['FORTRAN'] and obj.flags['CONTIGUOUS'])
shape = obj.shape
a = self.array(shape, intent.inplace, obj)
assert_(obj[1][2]==a.arr[1][2], repr((obj, a.arr)))
a.arr[1][2]=54
assert_(obj[1][2]==a.arr[1][2]==array(54, dtype=self.type.dtype), repr((obj, a.arr)))
assert_(a.arr is obj)
assert_(obj.flags['FORTRAN']) # obj attributes are changed inplace!
assert_(not obj.flags['CONTIGUOUS'])
assert_(obj.dtype.type is self.type.dtype) # obj type is changed inplace!
for t in _type_names:
exec('''\
class test_%s_gen(unittest.TestCase,
_test_shared_memory
):
def setUp(self):
self.type = Type(%r)
array = lambda self,dims,intent,obj: Array(Type(%r),dims,intent,obj)
''' % (t, t, t))
if __name__ == "__main__":
setup()
import nose
nose.runmodule()
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