/thirdparty/breakpad/third_party/protobuf/protobuf/python/google/protobuf/internal/wire_format_test.py
Python | 253 lines | 155 code | 26 blank | 72 comment | 11 complexity | 9631d9090165366dafed6011cebc9ff8 MD5 | raw file
1#! /usr/bin/python 2# 3# Protocol Buffers - Google's data interchange format 4# Copyright 2008 Google Inc. All rights reserved. 5# http://code.google.com/p/protobuf/ 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions are 9# met: 10# 11# * Redistributions of source code must retain the above copyright 12# notice, this list of conditions and the following disclaimer. 13# * Redistributions in binary form must reproduce the above 14# copyright notice, this list of conditions and the following disclaimer 15# in the documentation and/or other materials provided with the 16# distribution. 17# * Neither the name of Google Inc. nor the names of its 18# contributors may be used to endorse or promote products derived from 19# this software without specific prior written permission. 20# 21# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 33"""Test for google.protobuf.internal.wire_format.""" 34 35__author__ = 'robinson@google.com (Will Robinson)' 36 37import unittest 38from google.protobuf import message 39from google.protobuf.internal import wire_format 40 41 42class WireFormatTest(unittest.TestCase): 43 44 def testPackTag(self): 45 field_number = 0xabc 46 tag_type = 2 47 self.assertEqual((field_number << 3) | tag_type, 48 wire_format.PackTag(field_number, tag_type)) 49 PackTag = wire_format.PackTag 50 # Number too high. 51 self.assertRaises(message.EncodeError, PackTag, field_number, 6) 52 # Number too low. 53 self.assertRaises(message.EncodeError, PackTag, field_number, -1) 54 55 def testUnpackTag(self): 56 # Test field numbers that will require various varint sizes. 57 for expected_field_number in (1, 15, 16, 2047, 2048): 58 for expected_wire_type in range(6): # Highest-numbered wiretype is 5. 59 field_number, wire_type = wire_format.UnpackTag( 60 wire_format.PackTag(expected_field_number, expected_wire_type)) 61 self.assertEqual(expected_field_number, field_number) 62 self.assertEqual(expected_wire_type, wire_type) 63 64 self.assertRaises(TypeError, wire_format.UnpackTag, None) 65 self.assertRaises(TypeError, wire_format.UnpackTag, 'abc') 66 self.assertRaises(TypeError, wire_format.UnpackTag, 0.0) 67 self.assertRaises(TypeError, wire_format.UnpackTag, object()) 68 69 def testZigZagEncode(self): 70 Z = wire_format.ZigZagEncode 71 self.assertEqual(0, Z(0)) 72 self.assertEqual(1, Z(-1)) 73 self.assertEqual(2, Z(1)) 74 self.assertEqual(3, Z(-2)) 75 self.assertEqual(4, Z(2)) 76 self.assertEqual(0xfffffffe, Z(0x7fffffff)) 77 self.assertEqual(0xffffffff, Z(-0x80000000)) 78 self.assertEqual(0xfffffffffffffffe, Z(0x7fffffffffffffff)) 79 self.assertEqual(0xffffffffffffffff, Z(-0x8000000000000000)) 80 81 self.assertRaises(TypeError, Z, None) 82 self.assertRaises(TypeError, Z, 'abcd') 83 self.assertRaises(TypeError, Z, 0.0) 84 self.assertRaises(TypeError, Z, object()) 85 86 def testZigZagDecode(self): 87 Z = wire_format.ZigZagDecode 88 self.assertEqual(0, Z(0)) 89 self.assertEqual(-1, Z(1)) 90 self.assertEqual(1, Z(2)) 91 self.assertEqual(-2, Z(3)) 92 self.assertEqual(2, Z(4)) 93 self.assertEqual(0x7fffffff, Z(0xfffffffe)) 94 self.assertEqual(-0x80000000, Z(0xffffffff)) 95 self.assertEqual(0x7fffffffffffffff, Z(0xfffffffffffffffe)) 96 self.assertEqual(-0x8000000000000000, Z(0xffffffffffffffff)) 97 98 self.assertRaises(TypeError, Z, None) 99 self.assertRaises(TypeError, Z, 'abcd') 100 self.assertRaises(TypeError, Z, 0.0) 101 self.assertRaises(TypeError, Z, object()) 102 103 def NumericByteSizeTestHelper(self, byte_size_fn, value, expected_value_size): 104 # Use field numbers that cause various byte sizes for the tag information. 105 for field_number, tag_bytes in ((15, 1), (16, 2), (2047, 2), (2048, 3)): 106 expected_size = expected_value_size + tag_bytes 107 actual_size = byte_size_fn(field_number, value) 108 self.assertEqual(expected_size, actual_size, 109 'byte_size_fn: %s, field_number: %d, value: %r\n' 110 'Expected: %d, Actual: %d'% ( 111 byte_size_fn, field_number, value, expected_size, actual_size)) 112 113 def testByteSizeFunctions(self): 114 # Test all numeric *ByteSize() functions. 115 NUMERIC_ARGS = [ 116 # Int32ByteSize(). 117 [wire_format.Int32ByteSize, 0, 1], 118 [wire_format.Int32ByteSize, 127, 1], 119 [wire_format.Int32ByteSize, 128, 2], 120 [wire_format.Int32ByteSize, -1, 10], 121 # Int64ByteSize(). 122 [wire_format.Int64ByteSize, 0, 1], 123 [wire_format.Int64ByteSize, 127, 1], 124 [wire_format.Int64ByteSize, 128, 2], 125 [wire_format.Int64ByteSize, -1, 10], 126 # UInt32ByteSize(). 127 [wire_format.UInt32ByteSize, 0, 1], 128 [wire_format.UInt32ByteSize, 127, 1], 129 [wire_format.UInt32ByteSize, 128, 2], 130 [wire_format.UInt32ByteSize, wire_format.UINT32_MAX, 5], 131 # UInt64ByteSize(). 132 [wire_format.UInt64ByteSize, 0, 1], 133 [wire_format.UInt64ByteSize, 127, 1], 134 [wire_format.UInt64ByteSize, 128, 2], 135 [wire_format.UInt64ByteSize, wire_format.UINT64_MAX, 10], 136 # SInt32ByteSize(). 137 [wire_format.SInt32ByteSize, 0, 1], 138 [wire_format.SInt32ByteSize, -1, 1], 139 [wire_format.SInt32ByteSize, 1, 1], 140 [wire_format.SInt32ByteSize, -63, 1], 141 [wire_format.SInt32ByteSize, 63, 1], 142 [wire_format.SInt32ByteSize, -64, 1], 143 [wire_format.SInt32ByteSize, 64, 2], 144 # SInt64ByteSize(). 145 [wire_format.SInt64ByteSize, 0, 1], 146 [wire_format.SInt64ByteSize, -1, 1], 147 [wire_format.SInt64ByteSize, 1, 1], 148 [wire_format.SInt64ByteSize, -63, 1], 149 [wire_format.SInt64ByteSize, 63, 1], 150 [wire_format.SInt64ByteSize, -64, 1], 151 [wire_format.SInt64ByteSize, 64, 2], 152 # Fixed32ByteSize(). 153 [wire_format.Fixed32ByteSize, 0, 4], 154 [wire_format.Fixed32ByteSize, wire_format.UINT32_MAX, 4], 155 # Fixed64ByteSize(). 156 [wire_format.Fixed64ByteSize, 0, 8], 157 [wire_format.Fixed64ByteSize, wire_format.UINT64_MAX, 8], 158 # SFixed32ByteSize(). 159 [wire_format.SFixed32ByteSize, 0, 4], 160 [wire_format.SFixed32ByteSize, wire_format.INT32_MIN, 4], 161 [wire_format.SFixed32ByteSize, wire_format.INT32_MAX, 4], 162 # SFixed64ByteSize(). 163 [wire_format.SFixed64ByteSize, 0, 8], 164 [wire_format.SFixed64ByteSize, wire_format.INT64_MIN, 8], 165 [wire_format.SFixed64ByteSize, wire_format.INT64_MAX, 8], 166 # FloatByteSize(). 167 [wire_format.FloatByteSize, 0.0, 4], 168 [wire_format.FloatByteSize, 1000000000.0, 4], 169 [wire_format.FloatByteSize, -1000000000.0, 4], 170 # DoubleByteSize(). 171 [wire_format.DoubleByteSize, 0.0, 8], 172 [wire_format.DoubleByteSize, 1000000000.0, 8], 173 [wire_format.DoubleByteSize, -1000000000.0, 8], 174 # BoolByteSize(). 175 [wire_format.BoolByteSize, False, 1], 176 [wire_format.BoolByteSize, True, 1], 177 # EnumByteSize(). 178 [wire_format.EnumByteSize, 0, 1], 179 [wire_format.EnumByteSize, 127, 1], 180 [wire_format.EnumByteSize, 128, 2], 181 [wire_format.EnumByteSize, wire_format.UINT32_MAX, 5], 182 ] 183 for args in NUMERIC_ARGS: 184 self.NumericByteSizeTestHelper(*args) 185 186 # Test strings and bytes. 187 for byte_size_fn in (wire_format.StringByteSize, wire_format.BytesByteSize): 188 # 1 byte for tag, 1 byte for length, 3 bytes for contents. 189 self.assertEqual(5, byte_size_fn(10, 'abc')) 190 # 2 bytes for tag, 1 byte for length, 3 bytes for contents. 191 self.assertEqual(6, byte_size_fn(16, 'abc')) 192 # 2 bytes for tag, 2 bytes for length, 128 bytes for contents. 193 self.assertEqual(132, byte_size_fn(16, 'a' * 128)) 194 195 # Test UTF-8 string byte size calculation. 196 # 1 byte for tag, 1 byte for length, 8 bytes for content. 197 self.assertEqual(10, wire_format.StringByteSize( 198 5, unicode('\xd0\xa2\xd0\xb5\xd1\x81\xd1\x82', 'utf-8'))) 199 200 class MockMessage(object): 201 def __init__(self, byte_size): 202 self.byte_size = byte_size 203 def ByteSize(self): 204 return self.byte_size 205 206 message_byte_size = 10 207 mock_message = MockMessage(byte_size=message_byte_size) 208 # Test groups. 209 # (2 * 1) bytes for begin and end tags, plus message_byte_size. 210 self.assertEqual(2 + message_byte_size, 211 wire_format.GroupByteSize(1, mock_message)) 212 # (2 * 2) bytes for begin and end tags, plus message_byte_size. 213 self.assertEqual(4 + message_byte_size, 214 wire_format.GroupByteSize(16, mock_message)) 215 216 # Test messages. 217 # 1 byte for tag, plus 1 byte for length, plus contents. 218 self.assertEqual(2 + mock_message.byte_size, 219 wire_format.MessageByteSize(1, mock_message)) 220 # 2 bytes for tag, plus 1 byte for length, plus contents. 221 self.assertEqual(3 + mock_message.byte_size, 222 wire_format.MessageByteSize(16, mock_message)) 223 # 2 bytes for tag, plus 2 bytes for length, plus contents. 224 mock_message.byte_size = 128 225 self.assertEqual(4 + mock_message.byte_size, 226 wire_format.MessageByteSize(16, mock_message)) 227 228 229 # Test message set item byte size. 230 # 4 bytes for tags, plus 1 byte for length, plus 1 byte for type_id, 231 # plus contents. 232 mock_message.byte_size = 10 233 self.assertEqual(mock_message.byte_size + 6, 234 wire_format.MessageSetItemByteSize(1, mock_message)) 235 236 # 4 bytes for tags, plus 2 bytes for length, plus 1 byte for type_id, 237 # plus contents. 238 mock_message.byte_size = 128 239 self.assertEqual(mock_message.byte_size + 7, 240 wire_format.MessageSetItemByteSize(1, mock_message)) 241 242 # 4 bytes for tags, plus 2 bytes for length, plus 2 byte for type_id, 243 # plus contents. 244 self.assertEqual(mock_message.byte_size + 8, 245 wire_format.MessageSetItemByteSize(128, mock_message)) 246 247 # Too-long varint. 248 self.assertRaises(message.EncodeError, 249 wire_format.UInt64ByteSize, 1, 1 << 128) 250 251 252if __name__ == '__main__': 253 unittest.main()