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#!/usr/bin/python
# Copyright (c) 2012 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Tests of a Google Storage reader/writer."""
import os
import unittest
import file_tools
import gsd_storage
class TestGSDStorage(unittest.TestCase):
def test_PutData(self):
# Check that command line is as expected.
# Special handling around the destination file,
# as its a temporary name and unknown to us.
def call(cmd):
self.assertEqual(
['mygsutil', 'cp', '-a', 'public-read'], cmd[0:4])
self.assertEqual('foo', file_tools.ReadFile(cmd[4][len('file://'):]))
self.assertEqual('gs://mybucket/bar', cmd[5])
return 0
storage = gsd_storage.GSDStorage(
write_bucket='mybucket',
read_buckets=[],
gsutil=['mygsutil'], call=call)
url = storage.PutData('foo', 'bar')
self.assertEquals('https://storage.googleapis.com/mybucket/bar', url)
def test_PutFile(self):
# As we control all the paths, check the full command line for PutFile.
path = 'my/path'
def call(cmd):
self.assertEqual(
['mygsutil', 'cp', '-a', 'public-read',
'file://' + os.path.abspath(path).replace(os.sep, '/'),
'gs://mybucket/bar'],
cmd)
return 0
storage = gsd_storage.GSDStorage(
write_bucket='mybucket',
read_buckets=[],
gsutil=['mygsutil'], call=call)
url = storage.PutFile(path, 'bar')
self.assertEquals('https://storage.googleapis.com/mybucket/bar', url)
def test_PutFails(self):
def call(cmd):
return 1
# Mock out running gsutil, have it fail, and check that it does.
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=[],
call=call)
self.assertRaises(gsd_storage.GSDStorageError,
storage.PutFile, 'foo', 'bar')
self.assertRaises(gsd_storage.GSDStorageError,
storage.PutData, 'foo', 'bar')
def test_PutNoBucket(self):
# Check that we raise when writing an no bucket is provided.
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket=None,
read_buckets=[])
self.assertRaises(gsd_storage.GSDStorageError,
storage.PutFile, 'foo', 'bar')
self.assertRaises(gsd_storage.GSDStorageError,
storage.PutData, 'foo', 'bar')
def test_GetFile(self):
path = 'my/path'
def download(url, target):
self.assertEqual(path, target)
self.assertEqual('https://storage.googleapis.com/mybucket/bar', url)
# Mock out download and confirm we download the expected URL.
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=['mybucket'],
download=download)
storage.GetFile('bar', path)
def test_GetData(self):
def download(url, target):
self.assertEqual('https://storage.googleapis.com/mybucket/bar', url)
file_tools.WriteFile('baz', target)
# Mock out download and confirm we download the expected URL.
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=['mybucket'],
download=download)
self.assertEqual('baz', storage.GetData('bar'))
def test_GetFails(self):
def download(url, target):
raise Exception('fail download %s to %s' % (url, target))
# Make download raise and confirm this gets intercepted.
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=['mybucket'],
download=download)
self.assertFalse(storage.GetFile('foo', 'bar'))
self.assertEquals(None, storage.GetData('foo'))
def test_GetFallback(self):
# Fail reading from the first bucket, and check fallback to the second.
def download(url, target):
if 'badbucket' in url:
raise Exception('fail download %s to %s' % (url, target))
else:
file_tools.WriteFile('bar', target)
storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=['badbucket', 'goodbucket'],
download=download)
self.assertEquals('bar', storage.GetData('foo'))
def test_Exists(self):
stored_keys = set()
def call(cmd):
self.assertTrue(len(cmd) >= 3)
self.assertTrue(cmd[1] in ['cp', 'ls'])
if cmd[1] == 'cp':
# Add the key into stored_keys
copy_key = cmd[-1]
stored_keys.add(copy_key)
return 0
elif cmd[1] == 'ls':
query_key = cmd[-1]
if query_key in stored_keys:
return 0
else:
return 1
write_storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='mybucket',
read_buckets=[],
call=call)
read_storage = gsd_storage.GSDStorage(
gsutil=['mygsutil'],
write_bucket='',
read_buckets=['mybucket'],
call=call)
self.assertNotEquals(None, write_storage.PutData('data', 'foo_key'))
self.assertTrue(write_storage.Exists('foo_key'))
self.assertFalse(write_storage.Exists('bad_key'))
self.assertTrue(read_storage.Exists('foo_key'))
self.assertFalse(read_storage.Exists('bad_key'))
if __name__ == '__main__':
unittest.main()
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