Viewing file:  test_h5f.py (3.23 KB) -rw-r--r--
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# This file is part of h5py, a Python interface to the HDF5 library.
#
# http://www.h5py.org
#
# Copyright 2008-2013 Andrew Collette and contributors
#
# License: Standard 3-clause BSD; see "license.txt" for full license terms
# and contributor agreement.
import tempfile
import shutil
import os
import numpy as np
from h5py import File, special_dtype
from .common import TestCase
class TestFileID(TestCase):
def test_descriptor_core(self):
with File('TestFileID.test_descriptor_core', driver='core',
backing_store=False, mode='x') as f:
assert isinstance(f.id.get_vfd_handle(), int)
def test_descriptor_sec2(self):
dn_tmp = tempfile.mkdtemp('h5py.lowtest.test_h5f.TestFileID.test_descriptor_sec2')
fn_h5 = os.path.join(dn_tmp, 'test.h5')
try:
with File(fn_h5, driver='sec2', mode='x') as f:
descriptor = f.id.get_vfd_handle()
self.assertNotEqual(descriptor, 0)
os.fsync(descriptor)
finally:
shutil.rmtree(dn_tmp)
class TestCacheConfig(TestCase):
def test_simple_gets(self):
dn_tmp = tempfile.mkdtemp('h5py.lowtest.test_h5f.TestFileID.TestCacheConfig.test_simple_gets')
fn_h5 = os.path.join(dn_tmp, 'test.h5')
try:
with File(fn_h5, mode='x') as f:
hit_rate = f._id.get_mdc_hit_rate()
mdc_size = f._id.get_mdc_size()
finally:
shutil.rmtree(dn_tmp)
def test_hitrate_reset(self):
dn_tmp = tempfile.mkdtemp('h5py.lowtest.test_h5f.TestFileID.TestCacheConfig.test_hitrate_reset')
fn_h5 = os.path.join(dn_tmp, 'test.h5')
try:
with File(fn_h5, mode='x') as f:
hit_rate = f._id.get_mdc_hit_rate()
f._id.reset_mdc_hit_rate_stats()
hit_rate = f._id.get_mdc_hit_rate()
assert hit_rate == 0
finally:
shutil.rmtree(dn_tmp)
def test_mdc_config_get(self):
dn_tmp = tempfile.mkdtemp('h5py.lowtest.test_h5f.TestFileID.TestCacheConfig.test_mdc_config_get')
fn_h5 = os.path.join(dn_tmp, 'test.h5')
try:
with File(fn_h5, mode='x') as f:
conf = f._id.get_mdc_config()
f._id.set_mdc_config(conf)
finally:
shutil.rmtree(dn_tmp)
class TestVlenData(TestCase):
def test_vlen_strings(self):
# Create file with dataset containing vlen arrays of vlen strings
dn_tmp = tempfile.mkdtemp('h5py.lowtest.test_h5f.TestVlenStrings.test_vlen_strings')
fn_h5 = os.path.join(dn_tmp, 'test.h5')
try:
with File(fn_h5, mode='w') as h:
vlen_str = special_dtype(vlen=str)
vlen_vlen_str = special_dtype(vlen=vlen_str)
ds = h.create_dataset('/com', (2,), dtype=vlen_vlen_str)
ds[0] = (np.array(["a", "b", "c"], dtype=vlen_vlen_str))
ds[1] = (np.array(["d", "e", "f","g"], dtype=vlen_vlen_str))
with File(fn_h5, "r") as h:
ds = h["com"]
assert ds[0].tolist() == [b'a', b'b', b'c']
assert ds[1].tolist() == [b'd', b'e', b'f', b'g']
finally:
shutil.rmtree(dn_tmp)
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