| # |
| # Copyright 2015 Google Inc. |
| # |
| # 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. |
| |
| """Tests for buffered_stream.""" |
| |
| import string |
| |
| import six |
| import unittest2 |
| |
| from apitools.base.py import buffered_stream |
| from apitools.base.py import exceptions |
| |
| |
| class BufferedStreamTest(unittest2.TestCase): |
| |
| def setUp(self): |
| self.stream = six.StringIO(string.ascii_letters) |
| self.value = self.stream.getvalue() |
| self.stream.seek(0) |
| |
| def testEmptyBuffer(self): |
| bs = buffered_stream.BufferedStream(self.stream, 0, 0) |
| self.assertEqual('', bs.read(0)) |
| self.assertEqual(0, bs.stream_end_position) |
| |
| def testOffsetStream(self): |
| bs = buffered_stream.BufferedStream(self.stream, 50, 100) |
| self.assertEqual(len(self.value), len(bs)) |
| self.assertEqual(self.value, bs.read(len(self.value))) |
| self.assertEqual(50 + len(self.value), bs.stream_end_position) |
| |
| def testUnexhaustedStream(self): |
| bs = buffered_stream.BufferedStream(self.stream, 0, 50) |
| self.assertEqual(50, bs.stream_end_position) |
| self.assertEqual(False, bs.stream_exhausted) |
| self.assertEqual(self.value[0:50], bs.read(50)) |
| self.assertEqual(False, bs.stream_exhausted) |
| self.assertEqual('', bs.read(0)) |
| self.assertEqual('', bs.read(100)) |
| |
| def testExhaustedStream(self): |
| bs = buffered_stream.BufferedStream(self.stream, 0, 100) |
| self.assertEqual(len(self.value), bs.stream_end_position) |
| self.assertEqual(True, bs.stream_exhausted) |
| self.assertEqual(self.value, bs.read(100)) |
| self.assertEqual('', bs.read(0)) |
| self.assertEqual('', bs.read(100)) |
| |
| def testArbitraryLengthRead(self): |
| bs = buffered_stream.BufferedStream(self.stream, 0, 20) |
| with self.assertRaises(exceptions.NotYetImplementedError): |
| bs.read() |
| with self.assertRaises(exceptions.NotYetImplementedError): |
| bs.read(size=-1) |