def test_read_only_mmap_backing(self):
assert os.path.exists(os.path.dirname(self.temp_file))
with open(self.temp_file, 'rb') as fd:
mmap_backing = mmap.mmap(fd.fileno(), 0, access=mmap.ACCESS_READ)
arr = mmap_backed_array.mmaparray('I', mmap=mmap_backing)
assert arr[0] == 1
mmap_backing.close()
def test_read_only_mmap_backing(self):
assert os.path.exists(os.path.dirname(self.temp_file))
with open(self.temp_file, 'rb') as fd:
mmap_backing = mmap.mmap(
fd.fileno(), 0, access=mmap.ACCESS_READ
)
arr = mmap_backed_array.mmaparray('I', mmap=mmap_backing)
assert arr[0] == 1
mmap_backing.close()
def test_create_file(self):
with open(self.temp_file, 'wb+') as fd:
fd.write(b'\x00')
fd.flush()
mmap_backing = mmap_backed_array._mmap.mmap(fd.fileno(), 1)
arr = mmap_backed_array.mmaparray('I', mmap=mmap_backing)
arr.append(1)
arr.append(2)
arr.append(3)
mmap_backing.close()
def test_create_file(self):
with open(self.temp_file, 'wb+') as fd:
fd.write(b'\x00')
fd.flush()
mmap_backing = mmap_backed_array._mmap.mmap(fd.fileno(), 1)
arr = mmap_backed_array.mmaparray('I', mmap=mmap_backing)
arr.append(1)
arr.append(2)
arr.append(3)
mmap_backing.close()