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Name	Size	Permission
testing	[ DIR ]	drwxr-xr-x
__init__.py	1.22 KB	-rw-r--r--
base_api.py	29.29 KB	-rw-r--r--
base_api_test.py	14.12 KB	-rw-r--r--
batch.py	17.93 KB	-rw-r--r--
batch_test.py	24.73 KB	-rw-r--r--
buffered_stream.py	2.52 KB	-rw-r--r--
buffered_stream_test.py	2.4 KB	-rw-r--r--
compression.py	5.02 KB	-rw-r--r--
compression_test.py	5.19 KB	-rw-r--r--
credentials_lib.py	29.42 KB	-rw-r--r--
credentials_lib_test.py	7.58 KB	-rw-r--r--
encoding.py	1.16 KB	-rw-r--r--
encoding_helper.py	30 KB	-rw-r--r--
encoding_test.py	31.97 KB	-rw-r--r--
exceptions.py	4.98 KB	-rw-r--r--
exceptions_test.py	2.88 KB	-rw-r--r--
extra_types.py	9.74 KB	-rw-r--r--
extra_types_test.py	7.81 KB	-rw-r--r--
gzip.py	21.39 KB	-rw-r--r--
gzip_test.py	17.17 KB	-rw-r--r--
http_wrapper.py	15.09 KB	-rw-r--r--
http_wrapper_test.py	5.09 KB	-rw-r--r--
list_pager.py	5.49 KB	-rw-r--r--
list_pager_test.py	13.08 KB	-rw-r--r--
stream_slice.py	2.67 KB	-rw-r--r--
stream_slice_test.py	2.2 KB	-rw-r--r--
transfer.py	45.42 KB	-rw-r--r--
transfer_test.py	26.06 KB	-rw-r--r--
util.py	8.28 KB	-rw-r--r--
util_test.py	7.01 KB	-rw-r--r--

Code Editor : compression_test.py

#!/usr/bin/env python
#
# Copyright 2017 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 compression."""

import unittest

from apitools.base.py import compression
from apitools.base.py import gzip

import six

class CompressionTest(unittest.TestCase):

def setUp(self):
        # Sample highly compressible data (~50MB).
        self.sample_data = b'abc' * 16777216
        # Stream of the sample data.
        self.stream = six.BytesIO()
        self.stream.write(self.sample_data)
        self.length = self.stream.tell()
        self.stream.seek(0)

def testCompressionExhausted(self):
        """Test full compression.

Test that highly compressible data is actually compressed in entirety.
        """
        output, read, exhausted = compression.CompressStream(
            self.stream,
            self.length,
            9)
        # Ensure the compressed buffer is smaller than the input buffer.
        self.assertLess(output.length, self.length)
        # Ensure we read the entire input stream.
        self.assertEqual(read, self.length)
        # Ensure the input stream was exhausted.
        self.assertTrue(exhausted)

def testCompressionUnbounded(self):
        """Test unbounded compression.

Test that the input stream is exhausted when length is none.
        """
        output, read, exhausted = compression.CompressStream(
            self.stream,
            None,
            9)
        # Ensure the compressed buffer is smaller than the input buffer.
        self.assertLess(output.length, self.length)
        # Ensure we read the entire input stream.
        self.assertEqual(read, self.length)
        # Ensure the input stream was exhausted.
        self.assertTrue(exhausted)

def testCompressionPartial(self):
        """Test partial compression.

Test that the length parameter works correctly. The amount of data
        that's compressed can be greater than or equal to the requested length.
        """
        output_length = 40
        output, _, exhausted = compression.CompressStream(
            self.stream,
            output_length,
            9)
        # Ensure the requested read size is <= the compressed buffer size.
        self.assertLessEqual(output_length, output.length)
        # Ensure the input stream was not exhausted.
        self.assertFalse(exhausted)

def testCompressionIntegrity(self):
        """Test that compressed data can be decompressed."""
        output, read, exhausted = compression.CompressStream(
            self.stream,
            self.length,
            9)
        # Ensure uncompressed data matches the sample data.
        with gzip.GzipFile(fileobj=output) as f:
            original = f.read()
            self.assertEqual(original, self.sample_data)
        # Ensure we read the entire input stream.
        self.assertEqual(read, self.length)
        # Ensure the input stream was exhausted.
        self.assertTrue(exhausted)

class StreamingBufferTest(unittest.TestCase):

def setUp(self):
        self.stream = compression.StreamingBuffer()

def testSimpleStream(self):
        """Test simple stream operations.

Test that the stream can be written to and read from. Also test that
        reading from the stream consumes the bytes.
        """
        # Ensure the stream is empty.
        self.assertEqual(self.stream.length, 0)
        # Ensure data is correctly written.
        self.stream.write(b'Sample data')
        self.assertEqual(self.stream.length, 11)
        # Ensure data can be read and the read data is purged from the stream.
        data = self.stream.read(11)
        self.assertEqual(data, b'Sample data')
        self.assertEqual(self.stream.length, 0)

def testPartialReads(self):
        """Test partial stream reads.

Test that the stream can be read in chunks while perserving the
        consumption mechanics.
        """
        self.stream.write(b'Sample data')
        # Ensure data can be read and the read data is purged from the stream.
        data = self.stream.read(6)
        self.assertEqual(data, b'Sample')
        self.assertEqual(self.stream.length, 5)
        # Ensure the remaining data can be read.
        data = self.stream.read(5)
        self.assertEqual(data, b' data')
        self.assertEqual(self.stream.length, 0)

def testTooShort(self):
        """Test excessive stream reads.

Test that more data can be requested from the stream than available
        without raising an exception.
        """
        self.stream.write(b'Sample')
        # Ensure requesting more data than available does not raise an
        # exception.
        data = self.stream.read(100)
        self.assertEqual(data, b'Sample')
        self.assertEqual(self.stream.length, 0)

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Code Editor : compression_test.py