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hdfs_test.py
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hdfs_test.py
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# -*- coding: utf-8 -*-
#
# Copyright 2012-2015 Spotify AB
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import functools
import re
from datetime import datetime
import helpers
import luigi
import mock
from luigi import hdfs
from minicluster import MiniClusterTestCase
from nose.plugins.attrib import attr
try:
import unittest2 as unittest
except ImportError:
import unittest
class TestException(Exception):
pass
@attr('minicluster')
class ConfigurationTest(MiniClusterTestCase):
def tezt_rename_dont_move(self, client):
""" I happen to just want to test this, Since I know the codepaths will
be quite different for the three kinds of clients """
if client.exists('d'):
client.remove('d')
client.mkdir('d/a')
client.mkdir('d/b')
self.assertEqual(2, len(list(client.listdir('d'))))
target = hdfs.HdfsTarget('d/a', fs=client)
self.assertFalse(target.move_dir('d/b'))
self.assertEqual(2, len(list(client.listdir('d'))))
self.assertTrue(target.move_dir('d/c'))
self.assertEqual(2, len(list(client.listdir('d'))))
@helpers.with_config({"hdfs": {"client": "hadoopcli"}})
def test_hadoopcli(self):
client = hdfs.get_autoconfig_client()
self.tezt_rename_dont_move(client)
@helpers.with_config({"hdfs": {"client": "snakebite"}})
def test_snakebite(self):
client = hdfs.get_autoconfig_client()
self.tezt_rename_dont_move(client)
@helpers.with_config({"hdfs": {"client": "snakebite_with_hadoopcli_fallback"}})
def test_snakebite_with_hadoopcli_fallback(self):
client = hdfs.get_autoconfig_client()
self.tezt_rename_dont_move(client)
@attr('minicluster')
class ErrorHandling(MiniClusterTestCase):
def test_connection_refused(self):
""" The point of this test is to see if file existence checks
can distinguish file non-existence from errors
this test would fail if hdfs would run locally on port 0
"""
self.assertRaises(
hdfs.HDFSCliError,
self.fs.exists,
'hdfs://127.0.0.1:0/foo'
)
def test_mkdir_exists(self):
path = self._test_dir()
if not self.fs.exists(path):
self.fs.mkdir(path)
self.assertTrue(self.fs.exists(path))
self.assertRaises(
luigi.target.FileAlreadyExists,
functools.partial(self.fs.mkdir, parents=False, raise_if_exists=True),
path
)
self.fs.remove(path, skip_trash=True)
@attr('minicluster')
class AtomicHdfsOutputPipeTests(MiniClusterTestCase):
def test_atomicity(self):
testpath = self._test_dir()
if self.fs.exists(testpath):
self.fs.remove(testpath, skip_trash=True)
pipe = hdfs.HdfsAtomicWritePipe(testpath)
self.assertFalse(self.fs.exists(testpath))
pipe.close()
self.assertTrue(self.fs.exists(testpath))
def test_with_close(self):
testpath = self._test_file()
try:
if self.fs.exists(testpath):
self.fs.remove(testpath, skip_trash=True)
except:
if self.fs.exists(self._test_dir()):
self.fs.remove(self._test_dir(), skip_trash=True)
with hdfs.HdfsAtomicWritePipe(testpath) as fobj:
fobj.write('hej')
self.assertTrue(self.fs.exists(testpath))
def test_with_noclose(self):
testpath = self._test_file()
try:
if self.fs.exists(testpath):
self.fs.remove(testpath, skip_trash=True)
except:
if self.fs.exists(self._test_dir()):
self.fs.remove(self._test_dir(), skip_trash=True)
def foo():
with hdfs.HdfsAtomicWritePipe(testpath) as fobj:
fobj.write('hej')
raise TestException('Test triggered exception')
self.assertRaises(TestException, foo)
self.assertFalse(self.fs.exists(testpath))
@attr('minicluster')
class HdfsAtomicWriteDirPipeTests(MiniClusterTestCase):
def setUp(self):
super(HdfsAtomicWriteDirPipeTests, self).setUp()
self.path = self._test_file()
if self.fs.exists(self.path):
self.fs.remove(self.path, skip_trash=True)
def test_atomicity(self):
pipe = hdfs.HdfsAtomicWriteDirPipe(self.path)
self.assertFalse(self.fs.exists(self.path))
pipe.close()
self.assertTrue(self.fs.exists(self.path))
def test_readback(self):
pipe = hdfs.HdfsAtomicWriteDirPipe(self.path)
self.assertFalse(self.fs.exists(self.path))
pipe.write("foo\nbar")
pipe.close()
self.assertTrue(hdfs.exists(self.path))
dirlist = hdfs.listdir(self.path)
datapath = '%s/data' % self.path
returnlist = [d for d in dirlist]
self.assertTrue(returnlist[0].endswith(datapath))
pipe = hdfs.HdfsReadPipe(datapath)
self.assertEqual(pipe.read(), "foo\nbar")
def test_with_close(self):
with hdfs.HdfsAtomicWritePipe(self.path) as fobj:
fobj.write('hej')
self.assertTrue(self.fs.exists(self.path))
def test_with_noclose(self):
def foo():
with hdfs.HdfsAtomicWritePipe(self.path) as fobj:
fobj.write('hej')
raise TestException('Test triggered exception')
self.assertRaises(TestException, foo)
self.assertFalse(self.fs.exists(self.path))
# This class is a mixin, and does not inherit from TestCase, in order to avoid running the base class as a test case.
@attr('minicluster')
class _HdfsFormatTest(object):
format = None # override with luigi.format.Format subclass
def setUp(self):
super(_HdfsFormatTest, self).setUp()
self.target = hdfs.HdfsTarget(self._test_file(), format=self.format)
if self.target.exists():
self.target.remove(skip_trash=True)
def test_with_write_success(self):
with self.target.open('w') as fobj:
fobj.write('foo')
self.assertTrue(self.target.exists())
def test_with_write_failure(self):
def dummy():
with self.target.open('w') as fobj:
fobj.write('foo')
raise TestException()
self.assertRaises(TestException, dummy)
self.assertFalse(self.target.exists())
@attr('minicluster')
class PlainFormatTest(_HdfsFormatTest, MiniClusterTestCase):
format = hdfs.Plain
@attr('minicluster')
class PlainDirFormatTest(_HdfsFormatTest, MiniClusterTestCase):
format = hdfs.PlainDir
def test_multifile(self):
with self.target.open('w') as fobj:
fobj.write('foo\n')
second = hdfs.HdfsTarget(self.target.path + '/data2', format=hdfs.Plain)
with second.open('w') as fobj:
fobj.write('bar\n')
invisible = hdfs.HdfsTarget(self.target.path + '/_SUCCESS', format=hdfs.Plain)
with invisible.open('w') as fobj:
fobj.write('b0rk\n')
self.assertTrue(second.exists())
self.assertTrue(invisible.exists())
self.assertTrue(self.target.exists())
with self.target.open('r') as fobj:
parts = sorted(fobj.read().strip('\n').split('\n'))
self.assertEqual(tuple(parts), ('bar', 'foo'))
@attr('minicluster')
class HdfsTargetTests(MiniClusterTestCase):
def test_slow_exists(self):
target = hdfs.HdfsTarget(self._test_file())
try:
target.remove(skip_trash=True)
except:
pass
self.assertFalse(self.fs.exists(target.path))
target.open("w").close()
self.assertTrue(self.fs.exists(target.path))
def should_raise():
self.fs.exists("hdfs://doesnotexist/foo")
self.assertRaises(hdfs.HDFSCliError, should_raise)
def should_raise_2():
self.fs.exists("hdfs://_doesnotexist_/foo")
self.assertRaises(hdfs.HDFSCliError, should_raise_2)
def test_atomicity(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
fobj = target.open("w")
self.assertFalse(target.exists())
fobj.close()
self.assertTrue(target.exists())
def test_readback(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
origdata = 'lol\n'
fobj = target.open("w")
fobj.write(origdata)
fobj.close()
fobj = target.open('r')
data = fobj.read()
self.assertEqual(origdata, data)
def test_with_close(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
with target.open('w') as fobj:
fobj.write('hej\n')
self.assertTrue(target.exists())
def test_with_exception(self):
target = hdfs.HdfsTarget(self._test_file())
if target.exists():
target.remove(skip_trash=True)
def foo():
with target.open('w') as fobj:
fobj.write('hej\n')
raise TestException('Test triggered exception')
self.assertRaises(TestException, foo)
self.assertFalse(target.exists())
def test_create_ancestors(self):
parent = self._test_dir()
target = hdfs.HdfsTarget("%s/foo/bar/baz" % parent)
if self.fs.exists(parent):
self.fs.remove(parent, skip_trash=True)
self.assertFalse(self.fs.exists(parent))
fobj = target.open('w')
fobj.write('lol\n')
fobj.close()
self.assertTrue(self.fs.exists(parent))
self.assertTrue(target.exists())
def test_tmp_cleanup(self):
path = self._test_file()
target = hdfs.HdfsTarget(path, is_tmp=True)
if target.exists():
target.remove(skip_trash=True)
with target.open('w') as fobj:
fobj.write('lol\n')
self.assertTrue(target.exists())
del target
import gc
gc.collect()
self.assertFalse(self.fs.exists(path))
def test_luigi_tmp(self):
target = hdfs.HdfsTarget(is_tmp=True)
self.assertFalse(target.exists())
with target.open('w'):
pass
self.assertTrue(target.exists())
def test_tmp_move(self):
target = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget(self._test_file())
if target2.exists():
target2.remove(skip_trash=True)
with target.open('w'):
pass
self.assertTrue(target.exists())
target.move(target2.path)
self.assertFalse(target.exists())
self.assertTrue(target2.exists())
def test_rename_no_parent(self):
parent = self._test_dir() + '/foo'
if self.fs.exists(parent):
self.fs.remove(parent, skip_trash=True)
target1 = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget(parent + '/bar')
with target1.open('w'):
pass
self.assertTrue(target1.exists())
target1.move(target2.path)
self.assertFalse(target1.exists())
self.assertTrue(target2.exists())
def test_rename_no_grandparent(self):
grandparent = self._test_dir() + '/foo'
if self.fs.exists(grandparent):
self.fs.remove(grandparent, skip_trash=True)
target1 = hdfs.HdfsTarget(is_tmp=True)
target2 = hdfs.HdfsTarget(grandparent + '/bar/baz')
with target1.open('w'):
pass
self.assertTrue(target1.exists())
target1.move(target2.path)
self.assertFalse(target1.exists())
self.assertTrue(target2.exists())
def test_glob_exists(self):
target_dir = hdfs.HdfsTarget(self._test_dir())
if target_dir.exists():
target_dir.remove(skip_trash=True)
self.fs.mkdir(target_dir.path)
t1 = hdfs.HdfsTarget(target_dir.path + "/part-00001")
t2 = hdfs.HdfsTarget(target_dir.path + "/part-00002")
t3 = hdfs.HdfsTarget(target_dir.path + "/another")
with t1.open('w') as f:
f.write('foo\n')
with t2.open('w') as f:
f.write('bar\n')
with t3.open('w') as f:
f.write('biz\n')
files = hdfs.HdfsTarget("%s/part-0000*" % target_dir.path)
self.assertTrue(files.glob_exists(2))
self.assertFalse(files.glob_exists(3))
self.assertFalse(files.glob_exists(1))
def assertRegexpMatches(self, text, expected_regexp, msg=None):
"""Python 2.7 backport."""
if isinstance(expected_regexp, basestring):
expected_regexp = re.compile(expected_regexp)
if not expected_regexp.search(text):
msg = msg or "Regexp didn't match"
msg = '%s: %r not found in %r' % (msg, expected_regexp.pattern, text)
raise self.failureException(msg)
def test_tmppath_not_configured(self):
# Given: several target paths to test
path1 = "/dir1/dir2/file"
path2 = "hdfs:///dir1/dir2/file"
path3 = "hdfs://somehost/dir1/dir2/file"
path4 = "file:///dir1/dir2/file"
path5 = "/tmp/dir/file"
path6 = "file:///tmp/dir/file"
path7 = "hdfs://somehost/tmp/dir/file"
path8 = None
path9 = "/tmpdir/file"
# When: I create a temporary path for targets
res1 = hdfs.tmppath(path1, include_unix_username=False)
res2 = hdfs.tmppath(path2, include_unix_username=False)
res3 = hdfs.tmppath(path3, include_unix_username=False)
res4 = hdfs.tmppath(path4, include_unix_username=False)
res5 = hdfs.tmppath(path5, include_unix_username=False)
res6 = hdfs.tmppath(path6, include_unix_username=False)
res7 = hdfs.tmppath(path7, include_unix_username=False)
res8 = hdfs.tmppath(path8, include_unix_username=False)
res9 = hdfs.tmppath(path9, include_unix_username=False)
# Then: I should get correct results relative to Luigi temporary directory
self.assertRegexpMatches(res1, "^/tmp/dir1/dir2/file-luigitemp-\d+")
# it would be better to see hdfs:///path instead of hdfs:/path, but single slash also works well
self.assertRegexpMatches(res2, "^hdfs:/tmp/dir1/dir2/file-luigitemp-\d+")
self.assertRegexpMatches(res3, "^hdfs://somehost/tmp/dir1/dir2/file-luigitemp-\d+")
self.assertRegexpMatches(res4, "^file:///tmp/dir1/dir2/file-luigitemp-\d+")
self.assertRegexpMatches(res5, "^/tmp/dir/file-luigitemp-\d+")
# known issue with duplicated "tmp" if schema is present
self.assertRegexpMatches(res6, "^file:///tmp/tmp/dir/file-luigitemp-\d+")
# known issue with duplicated "tmp" if schema is present
self.assertRegexpMatches(res7, "^hdfs://somehost/tmp/tmp/dir/file-luigitemp-\d+")
self.assertRegexpMatches(res8, "^/tmp/luigitemp-\d+")
self.assertRegexpMatches(res9, "/tmp/tmpdir/file")
def test_tmppath_username(self):
self.assertRegexpMatches(hdfs.tmppath('/path/to/stuff', include_unix_username=True),
"^/tmp/[a-z0-9_]+/path/to/stuff-luigitemp-\d+")
@attr('minicluster')
class HdfsClientTest(MiniClusterTestCase):
def create_file(self, target):
fobj = target.open("w")
fobj.close()
def put_file(self, local_target, local_filename, target_path, delpath=True):
if local_target.exists():
local_target.remove()
self.create_file(local_target)
if delpath:
target = hdfs.HdfsTarget(target_path)
if target.exists():
target.remove(skip_trash=True)
self.fs.mkdir(target.path)
self.fs.put(local_target.path, target_path)
target_file_path = target_path + "/" + local_filename
return hdfs.HdfsTarget(target_file_path)
def test_put(self):
local_dir = "test/data"
local_filename = "file1.dat"
local_path = "%s/%s" % (local_dir, local_filename)
target_path = self._test_dir()
local_target = luigi.LocalTarget(local_path)
target = self.put_file(local_target, local_filename, target_path)
self.assertTrue(target.exists())
local_target.remove()
def test_get(self):
local_dir = "test/data"
local_filename = "file1.dat"
local_path = "%s/%s" % (local_dir, local_filename)
target_path = self._test_dir()
local_target = luigi.LocalTarget(local_path)
target = self.put_file(local_target, local_filename, target_path)
self.assertTrue(target.exists())
local_target.remove()
local_copy_path = "%s/file1.dat.cp" % local_dir
local_copy = luigi.LocalTarget(local_copy_path)
if local_copy.exists():
local_copy.remove()
self.fs.get(target.path, local_copy_path)
self.assertTrue(local_copy.exists())
local_copy.remove()
def test_getmerge(self):
local_dir = "test/data"
local_filename1 = "file1.dat"
local_path1 = "%s/%s" % (local_dir, local_filename1)
local_filename2 = "file2.dat"
local_path2 = "%s/%s" % (local_dir, local_filename2)
target_dir = self._test_dir()
local_target1 = luigi.LocalTarget(local_path1)
target1 = self.put_file(local_target1, local_filename1, target_dir)
self.assertTrue(target1.exists())
local_target1.remove()
local_target2 = luigi.LocalTarget(local_path2)
target2 = self.put_file(local_target2, local_filename2, target_dir)
self.assertTrue(target2.exists())
local_target2.remove()
local_copy_path = "%s/file.dat.cp" % (local_dir)
local_copy = luigi.LocalTarget(local_copy_path)
if local_copy.exists():
local_copy.remove()
self.fs.getmerge(target_dir, local_copy_path)
self.assertTrue(local_copy.exists())
local_copy.remove()
local_copy_crc_path = "%s/.file.dat.cp.crc" % (local_dir)
local_copy_crc = luigi.LocalTarget(local_copy_crc_path)
self.assertTrue(local_copy_crc.exists())
local_copy_crc.remove()
def _setup_listdir(self):
"""Create the test directory, and things in it."""
target_dir = self._test_dir()
local_dir = "test/data"
local_filename1 = "file1.dat"
local_path1 = "%s/%s" % (local_dir, local_filename1)
local_target1 = luigi.LocalTarget(local_path1)
target1 = self.put_file(local_target1, local_filename1, target_dir)
self.assertTrue(target1.exists())
local_filename2 = "file2.dat"
local_path2 = "%s/%s" % (local_dir, local_filename2)
local_target2 = luigi.LocalTarget(local_path2)
target2 = self.put_file(local_target2, local_filename2,
target_dir, delpath=False)
self.assertTrue(target2.exists())
local_filename3 = "file3.dat"
local_path3 = "%s/%s" % (local_dir, local_filename3)
local_target3 = luigi.LocalTarget(local_path3)
target3 = self.put_file(local_target3, local_filename3,
target_dir + '/sub1')
self.assertTrue(target3.exists())
local_filename4 = "file4.dat"
local_path4 = "%s/%s" % (local_dir, local_filename4)
local_target4 = luigi.LocalTarget(local_path4)
target4 = self.put_file(local_target4, local_filename4,
target_dir + '/sub2')
self.assertTrue(target4.exists())
return target_dir
def test_listdir_base_list(self):
"""Verify we get the base four items created by _setup_listdir()"""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=False,
include_type=False, include_time=False,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(4, len(entries), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0], msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1], msg="%r" % entries)
self.assertEqual(path + '/sub1', entries[2], msg="%r" % entries)
self.assertEqual(path + '/sub2', entries[3], msg="%r" % entries)
def test_listdir_base_list_files_only(self):
"""Verify we get the base two files created by _setup_listdir()"""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=True,
ignore_files=False, include_size=False,
include_type=False, include_time=False,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(2, len(entries), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0], msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1], msg="%r" % entries)
def test_listdir_base_list_dirs_only(self):
"""Verify we get the base two directories created by _setup_listdir()"""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=True, include_size=False,
include_type=False, include_time=False,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(2, len(entries), msg="%r" % entries)
self.assertEqual(path + '/sub1', entries[0], msg="%r" % entries)
self.assertEqual(path + '/sub2', entries[1], msg="%r" % entries)
def test_listdir_base_list_recusion(self):
"""Verify we get the every item created by _setup_listdir()"""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=False,
include_type=False, include_time=False,
recursive=True)
entries = [dd for dd in dirlist]
self.assertEqual(6, len(entries), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0], msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1], msg="%r" % entries)
self.assertEqual(path + '/sub1', entries[2], msg="%r" % entries)
self.assertEqual(path + '/sub1/file3.dat', entries[3], msg="%r" % entries)
self.assertEqual(path + '/sub2', entries[4], msg="%r" % entries)
self.assertEqual(path + '/sub2/file4.dat', entries[5], msg="%r" % entries)
def test_listdir_base_list_get_sizes(self):
"""Verify we get sizes for the two base files."""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=True,
include_type=False, include_time=False,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(4, len(entries), msg="%r" % entries)
self.assertEqual(2, len(entries[0]), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0][0], msg="%r" % entries)
self.assertEqual(0, entries[0][1], msg="%r" % entries)
self.assertEqual(2, len(entries[1]), msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1][0], msg="%r" % entries)
self.assertEqual(0, entries[1][1], msg="%r" % entries)
def test_listdir_base_list_get_types(self):
"""Verify we get the types for the four base items."""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=False,
include_type=True, include_time=False,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(4, len(entries), msg="%r" % entries)
self.assertEqual(2, len(entries[0]), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0][0], msg="%r" % entries)
self.assertTrue(re.match(r'[-f]', entries[0][1]), msg="%r" % entries)
self.assertEqual(2, len(entries[1]), msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1][0], msg="%r" % entries)
self.assertTrue(re.match(r'[-f]', entries[1][1]), msg="%r" % entries)
self.assertEqual(2, len(entries[2]), msg="%r" % entries)
self.assertEqual(path + '/sub1', entries[2][0], msg="%r" % entries)
self.assertEqual('d', entries[2][1], msg="%r" % entries)
self.assertEqual(2, len(entries[3]), msg="%r" % entries)
self.assertEqual(path + '/sub2', entries[3][0], msg="%r" % entries)
self.assertEqual('d', entries[3][1], msg="%r" % entries)
def test_listdir_base_list_get_times(self):
"""Verify we get the times, even if we can't fully check them."""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=False,
include_type=False, include_time=True,
recursive=False)
entries = [dd for dd in dirlist]
self.assertEqual(4, len(entries), msg="%r" % entries)
self.assertEqual(2, len(entries[0]), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0][0], msg="%r" % entries)
def test_listdir_full_list_get_everything(self):
"""Verify we get all the values, even if we can't fully check them."""
path = self._setup_listdir()
dirlist = self.fs.listdir(path, ignore_directories=False,
ignore_files=False, include_size=True,
include_type=True, include_time=True,
recursive=True)
entries = [dd for dd in dirlist]
self.assertEqual(6, len(entries), msg="%r" % entries)
self.assertEqual(4, len(entries[0]), msg="%r" % entries)
self.assertEqual(path + '/file1.dat', entries[0][0], msg="%r" % entries)
self.assertEqual(0, entries[0][1], msg="%r" % entries)
self.assertTrue(re.match(r'[-f]', entries[0][2]), msg="%r" % entries)
self.assertEqual(4, len(entries[1]), msg="%r" % entries)
self.assertEqual(path + '/file2.dat', entries[1][0], msg="%r" % entries)
self.assertEqual(4, len(entries[2]), msg="%r" % entries)
self.assertEqual(path + '/sub1', entries[2][0], msg="%r" % entries)
self.assertEqual(4, len(entries[3]), msg="%r" % entries)
self.assertEqual(path + '/sub1/file3.dat', entries[3][0], msg="%r" % entries)
self.assertEqual(4, len(entries[4]), msg="%r" % entries)
self.assertEqual(path + '/sub2', entries[4][0], msg="%r" % entries)
self.assertEqual(4, len(entries[5]), msg="%r" % entries)
self.assertEqual(path + '/sub2/file4.dat', entries[5][0], msg="%r" % entries)
@mock.patch('luigi.hdfs.call_check')
def test_cdh3_client(self, call_check):
cdh3_client = luigi.hdfs.HdfsClientCdh3()
cdh3_client.remove("/some/path/here")
self.assertEqual(['fs', '-rmr', '/some/path/here'], call_check.call_args[0][0][-3:])
cdh3_client.remove("/some/path/here", recursive=False)
self.assertEqual(['fs', '-rm', '/some/path/here'], call_check.call_args[0][0][-3:])
@mock.patch('subprocess.Popen')
def test_apache1_client(self, popen):
comm = mock.Mock(name='communicate_mock')
comm.return_value = "some return stuff", ""
preturn = mock.Mock(name='open_mock')
preturn.returncode = 0
preturn.communicate = comm
popen.return_value = preturn
apache_client = luigi.hdfs.HdfsClientApache1()
returned = apache_client.exists("/some/path/somewhere")
self.assertTrue(returned)
preturn.returncode = 1
returned = apache_client.exists("/some/path/somewhere")
self.assertFalse(returned)
preturn.returncode = 13
self.assertRaises(luigi.hdfs.HDFSCliError, apache_client.exists, "/some/path/somewhere")