python类ByteSize()的实例源码

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def testClear(self):
    proto = unittest_pb2.TestAllTypes()
    # C++ implementation does not support lazy fields right now so leave it
    # out for now.
    if api_implementation.Type() == 'python':
      test_util.SetAllFields(proto)
    else:
      test_util.SetAllNonLazyFields(proto)
    # Clear the message.
    proto.Clear()
    self.assertEqual(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllTypes()
    self.assertEqual(proto, empty_proto)

    # Test if extensions which were set are cleared.
    proto = unittest_pb2.TestAllExtensions()
    test_util.SetAllExtensions(proto)
    # Clear the message.
    proto.Clear()
    self.assertEqual(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllExtensions()
    self.assertEqual(proto, empty_proto)

def testCacheInvalidationForNonrepeatedScalar(self):
    # Test non-extension.
    self.proto.optional_int32 = 1
    self.assertEqual(2, self.proto.ByteSize())
    self.proto.optional_int32 = 128
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.ClearField('optional_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.optional_int_extension
    self.extended_proto.Extensions[extension] = 1
    self.assertEqual(2, self.extended_proto.ByteSize())
    self.extended_proto.Extensions[extension] = 128
    self.assertEqual(3, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedScalar(self):
    # Test non-extension.
    self.proto.repeated_int32.append(1)
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_int32.append(1)
    self.assertEqual(6, self.proto.ByteSize())
    self.proto.repeated_int32[1] = 128
    self.assertEqual(7, self.proto.ByteSize())
    self.proto.ClearField('repeated_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_int_extension
    repeated = self.extended_proto.Extensions[extension]
    repeated.append(1)
    self.assertEqual(2, self.extended_proto.ByteSize())
    repeated.append(1)
    self.assertEqual(4, self.extended_proto.ByteSize())
    repeated[1] = 128
    self.assertEqual(5, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedMessage(self):
    # Test non-extension.
    child0 = self.proto.repeated_foreign_message.add()
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_foreign_message.add()
    self.assertEqual(6, self.proto.ByteSize())
    child0.c = 1
    self.assertEqual(8, self.proto.ByteSize())
    self.proto.ClearField('repeated_foreign_message')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_message_extension
    child_list = self.extended_proto.Extensions[extension]
    child0 = child_list.add()
    self.assertEqual(2, self.extended_proto.ByteSize())
    child_list.add()
    self.assertEqual(4, self.extended_proto.ByteSize())
    child0.foreign_message_int = 1
    self.assertEqual(6, self.extended_proto.ByteSize())
    child0.ClearField('foreign_message_int')
    self.assertEqual(4, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testPackedRepeatedScalars(self):
    self.assertEqual(0, self.packed_proto.ByteSize())

    self.packed_proto.packed_int32.append(10)   # 1 byte.
    self.packed_proto.packed_int32.append(128)  # 2 bytes.
    # The tag is 2 bytes (the field number is 90), and the varint
    # storing the length is 1 byte.
    int_size = 1 + 2 + 3
    self.assertEqual(int_size, self.packed_proto.ByteSize())

    self.packed_proto.packed_double.append(4.2)   # 8 bytes
    self.packed_proto.packed_double.append(3.25)  # 8 bytes
    # 2 more tag bytes, 1 more length byte.
    double_size = 8 + 8 + 3
    self.assertEqual(int_size+double_size, self.packed_proto.ByteSize())

    self.packed_proto.ClearField('packed_int32')
    self.assertEqual(double_size, self.packed_proto.ByteSize())

def testCanonicalSerializationOrder(self):
    proto = more_messages_pb2.OutOfOrderFields()
    # These are also their tag numbers.  Even though we're setting these in
    # reverse-tag order AND they're listed in reverse tag-order in the .proto
    # file, they should nonetheless be serialized in tag order.
    proto.optional_sint32 = 5
    proto.Extensions[more_messages_pb2.optional_uint64] = 4
    proto.optional_uint32 = 3
    proto.Extensions[more_messages_pb2.optional_int64] = 2
    proto.optional_int32 = 1
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((1, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual((2, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(2, d.ReadInt64())
    self.assertEqual((3, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(3, d.ReadUInt32())
    self.assertEqual((4, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(4, d.ReadUInt64())
    self.assertEqual((5, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(5, d.ReadSInt32())

def testPackedFieldsWireFormat(self):
    proto = unittest_pb2.TestPackedTypes()
    proto.packed_int32.extend([1, 2, 150, 3])  # 1 + 1 + 2 + 1 bytes
    proto.packed_double.extend([1.0, 1000.0])  # 8 + 8 bytes
    proto.packed_float.append(2.0)             # 4 bytes, will be before double
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((90, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(1+1+1+2, d.ReadInt32())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual(2, d.ReadInt32())
    self.assertEqual(150, d.ReadInt32())
    self.assertEqual(3, d.ReadInt32())
    self.assertEqual((100, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(4, d.ReadInt32())
    self.assertEqual(2.0, d.ReadFloat())
    self.assertEqual((101, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(8+8, d.ReadInt32())
    self.assertEqual(1.0, d.ReadDouble())
    self.assertEqual(1000.0, d.ReadDouble())
    self.assertTrue(d.EndOfStream())

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def testClear(self):
    proto = unittest_pb2.TestAllTypes()
    # C++ implementation does not support lazy fields right now so leave it
    # out for now.
    if api_implementation.Type() == 'python':
      test_util.SetAllFields(proto)
    else:
      test_util.SetAllNonLazyFields(proto)
    # Clear the message.
    proto.Clear()
    self.assertEquals(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllTypes()
    self.assertEquals(proto, empty_proto)

    # Test if extensions which were set are cleared.
    proto = unittest_pb2.TestAllExtensions()
    test_util.SetAllExtensions(proto)
    # Clear the message.
    proto.Clear()
    self.assertEquals(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllExtensions()
    self.assertEquals(proto, empty_proto)

def testCacheInvalidationForNonrepeatedScalar(self):
    # Test non-extension.
    self.proto.optional_int32 = 1
    self.assertEqual(2, self.proto.ByteSize())
    self.proto.optional_int32 = 128
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.ClearField('optional_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.optional_int_extension
    self.extended_proto.Extensions[extension] = 1
    self.assertEqual(2, self.extended_proto.ByteSize())
    self.extended_proto.Extensions[extension] = 128
    self.assertEqual(3, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedScalar(self):
    # Test non-extension.
    self.proto.repeated_int32.append(1)
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_int32.append(1)
    self.assertEqual(6, self.proto.ByteSize())
    self.proto.repeated_int32[1] = 128
    self.assertEqual(7, self.proto.ByteSize())
    self.proto.ClearField('repeated_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_int_extension
    repeated = self.extended_proto.Extensions[extension]
    repeated.append(1)
    self.assertEqual(2, self.extended_proto.ByteSize())
    repeated.append(1)
    self.assertEqual(4, self.extended_proto.ByteSize())
    repeated[1] = 128
    self.assertEqual(5, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedMessage(self):
    # Test non-extension.
    child0 = self.proto.repeated_foreign_message.add()
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_foreign_message.add()
    self.assertEqual(6, self.proto.ByteSize())
    child0.c = 1
    self.assertEqual(8, self.proto.ByteSize())
    self.proto.ClearField('repeated_foreign_message')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_message_extension
    child_list = self.extended_proto.Extensions[extension]
    child0 = child_list.add()
    self.assertEqual(2, self.extended_proto.ByteSize())
    child_list.add()
    self.assertEqual(4, self.extended_proto.ByteSize())
    child0.foreign_message_int = 1
    self.assertEqual(6, self.extended_proto.ByteSize())
    child0.ClearField('foreign_message_int')
    self.assertEqual(4, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testPackedRepeatedScalars(self):
    self.assertEqual(0, self.packed_proto.ByteSize())

    self.packed_proto.packed_int32.append(10)   # 1 byte.
    self.packed_proto.packed_int32.append(128)  # 2 bytes.
    # The tag is 2 bytes (the field number is 90), and the varint
    # storing the length is 1 byte.
    int_size = 1 + 2 + 3
    self.assertEqual(int_size, self.packed_proto.ByteSize())

    self.packed_proto.packed_double.append(4.2)   # 8 bytes
    self.packed_proto.packed_double.append(3.25)  # 8 bytes
    # 2 more tag bytes, 1 more length byte.
    double_size = 8 + 8 + 3
    self.assertEqual(int_size+double_size, self.packed_proto.ByteSize())

    self.packed_proto.ClearField('packed_int32')
    self.assertEqual(double_size, self.packed_proto.ByteSize())

def testCanonicalSerializationOrder(self):
    proto = more_messages_pb2.OutOfOrderFields()
    # These are also their tag numbers.  Even though we're setting these in
    # reverse-tag order AND they're listed in reverse tag-order in the .proto
    # file, they should nonetheless be serialized in tag order.
    proto.optional_sint32 = 5
    proto.Extensions[more_messages_pb2.optional_uint64] = 4
    proto.optional_uint32 = 3
    proto.Extensions[more_messages_pb2.optional_int64] = 2
    proto.optional_int32 = 1
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((1, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual((2, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(2, d.ReadInt64())
    self.assertEqual((3, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(3, d.ReadUInt32())
    self.assertEqual((4, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(4, d.ReadUInt64())
    self.assertEqual((5, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(5, d.ReadSInt32())

def testPackedFieldsWireFormat(self):
    proto = unittest_pb2.TestPackedTypes()
    proto.packed_int32.extend([1, 2, 150, 3])  # 1 + 1 + 2 + 1 bytes
    proto.packed_double.extend([1.0, 1000.0])  # 8 + 8 bytes
    proto.packed_float.append(2.0)             # 4 bytes, will be before double
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((90, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(1+1+1+2, d.ReadInt32())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual(2, d.ReadInt32())
    self.assertEqual(150, d.ReadInt32())
    self.assertEqual(3, d.ReadInt32())
    self.assertEqual((100, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(4, d.ReadInt32())
    self.assertEqual(2.0, d.ReadFloat())
    self.assertEqual((101, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(8+8, d.ReadInt32())
    self.assertEqual(1.0, d.ReadDouble())
    self.assertEqual(1000.0, d.ReadDouble())
    self.assertTrue(d.EndOfStream())

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def testClear(self):
    proto = unittest_pb2.TestAllTypes()
    # C++ implementation does not support lazy fields right now so leave it
    # out for now.
    if api_implementation.Type() == 'python':
      test_util.SetAllFields(proto)
    else:
      test_util.SetAllNonLazyFields(proto)
    # Clear the message.
    proto.Clear()
    self.assertEquals(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllTypes()
    self.assertEquals(proto, empty_proto)

    # Test if extensions which were set are cleared.
    proto = unittest_pb2.TestAllExtensions()
    test_util.SetAllExtensions(proto)
    # Clear the message.
    proto.Clear()
    self.assertEquals(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllExtensions()
    self.assertEquals(proto, empty_proto)

def testCacheInvalidationForNonrepeatedScalar(self):
    # Test non-extension.
    self.proto.optional_int32 = 1
    self.assertEqual(2, self.proto.ByteSize())
    self.proto.optional_int32 = 128
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.ClearField('optional_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.optional_int_extension
    self.extended_proto.Extensions[extension] = 1
    self.assertEqual(2, self.extended_proto.ByteSize())
    self.extended_proto.Extensions[extension] = 128
    self.assertEqual(3, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedScalar(self):
    # Test non-extension.
    self.proto.repeated_int32.append(1)
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_int32.append(1)
    self.assertEqual(6, self.proto.ByteSize())
    self.proto.repeated_int32[1] = 128
    self.assertEqual(7, self.proto.ByteSize())
    self.proto.ClearField('repeated_int32')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_int_extension
    repeated = self.extended_proto.Extensions[extension]
    repeated.append(1)
    self.assertEqual(2, self.extended_proto.ByteSize())
    repeated.append(1)
    self.assertEqual(4, self.extended_proto.ByteSize())
    repeated[1] = 128
    self.assertEqual(5, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testCacheInvalidationForRepeatedMessage(self):
    # Test non-extension.
    child0 = self.proto.repeated_foreign_message.add()
    self.assertEqual(3, self.proto.ByteSize())
    self.proto.repeated_foreign_message.add()
    self.assertEqual(6, self.proto.ByteSize())
    child0.c = 1
    self.assertEqual(8, self.proto.ByteSize())
    self.proto.ClearField('repeated_foreign_message')
    self.assertEqual(0, self.proto.ByteSize())

    # Test within extension.
    extension = more_extensions_pb2.repeated_message_extension
    child_list = self.extended_proto.Extensions[extension]
    child0 = child_list.add()
    self.assertEqual(2, self.extended_proto.ByteSize())
    child_list.add()
    self.assertEqual(4, self.extended_proto.ByteSize())
    child0.foreign_message_int = 1
    self.assertEqual(6, self.extended_proto.ByteSize())
    child0.ClearField('foreign_message_int')
    self.assertEqual(4, self.extended_proto.ByteSize())
    self.extended_proto.ClearExtension(extension)
    self.assertEqual(0, self.extended_proto.ByteSize())

def testPackedRepeatedScalars(self):
    self.assertEqual(0, self.packed_proto.ByteSize())

    self.packed_proto.packed_int32.append(10)   # 1 byte.
    self.packed_proto.packed_int32.append(128)  # 2 bytes.
    # The tag is 2 bytes (the field number is 90), and the varint
    # storing the length is 1 byte.
    int_size = 1 + 2 + 3
    self.assertEqual(int_size, self.packed_proto.ByteSize())

    self.packed_proto.packed_double.append(4.2)   # 8 bytes
    self.packed_proto.packed_double.append(3.25)  # 8 bytes
    # 2 more tag bytes, 1 more length byte.
    double_size = 8 + 8 + 3
    self.assertEqual(int_size+double_size, self.packed_proto.ByteSize())

    self.packed_proto.ClearField('packed_int32')
    self.assertEqual(double_size, self.packed_proto.ByteSize())

def testCanonicalSerializationOrder(self):
    proto = more_messages_pb2.OutOfOrderFields()
    # These are also their tag numbers.  Even though we're setting these in
    # reverse-tag order AND they're listed in reverse tag-order in the .proto
    # file, they should nonetheless be serialized in tag order.
    proto.optional_sint32 = 5
    proto.Extensions[more_messages_pb2.optional_uint64] = 4
    proto.optional_uint32 = 3
    proto.Extensions[more_messages_pb2.optional_int64] = 2
    proto.optional_int32 = 1
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((1, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual((2, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(2, d.ReadInt64())
    self.assertEqual((3, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(3, d.ReadUInt32())
    self.assertEqual((4, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(4, d.ReadUInt64())
    self.assertEqual((5, wire_format.WIRETYPE_VARINT), ReadTag())
    self.assertEqual(5, d.ReadSInt32())

def testPackedFieldsWireFormat(self):
    proto = unittest_pb2.TestPackedTypes()
    proto.packed_int32.extend([1, 2, 150, 3])  # 1 + 1 + 2 + 1 bytes
    proto.packed_double.extend([1.0, 1000.0])  # 8 + 8 bytes
    proto.packed_float.append(2.0)             # 4 bytes, will be before double
    serialized = proto.SerializeToString()
    self.assertEqual(proto.ByteSize(), len(serialized))
    d = _MiniDecoder(serialized)
    ReadTag = d.ReadFieldNumberAndWireType
    self.assertEqual((90, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(1+1+1+2, d.ReadInt32())
    self.assertEqual(1, d.ReadInt32())
    self.assertEqual(2, d.ReadInt32())
    self.assertEqual(150, d.ReadInt32())
    self.assertEqual(3, d.ReadInt32())
    self.assertEqual((100, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(4, d.ReadInt32())
    self.assertEqual(2.0, d.ReadFloat())
    self.assertEqual((101, wire_format.WIRETYPE_LENGTH_DELIMITED), ReadTag())
    self.assertEqual(8+8, d.ReadInt32())
    self.assertEqual(1.0, d.ReadDouble())
    self.assertEqual(1000.0, d.ReadDouble())
    self.assertTrue(d.EndOfStream())

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def MessageSetItemByteSize(field_number, msg):
  # First compute the sizes of the tags.
  # There are 2 tags for the beginning and ending of the repeated group, that
  # is field number 1, one with field number 2 (type_id) and one with field
  # number 3 (message).
  total_size = (2 * TagByteSize(1) + TagByteSize(2) + TagByteSize(3))

  # Add the number of bytes for type_id.
  total_size += _VarUInt64ByteSizeNoTag(field_number)

  message_size = msg.ByteSize()

  # The number of bytes for encoding the length of the message.
  total_size += _VarUInt64ByteSizeNoTag(message_size)

  # The size of the message.
  total_size += message_size
  return total_size

def testClear(self):
    proto = unittest_pb2.TestAllTypes()
    # C++ implementation does not support lazy fields right now so leave it
    # out for now.
    if api_implementation.Type() == 'python':
      test_util.SetAllFields(proto)
    else:
      test_util.SetAllNonLazyFields(proto)
    # Clear the message.
    proto.Clear()
    self.assertEqual(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllTypes()
    self.assertEqual(proto, empty_proto)

    # Test if extensions which were set are cleared.
    proto = unittest_pb2.TestAllExtensions()
    test_util.SetAllExtensions(proto)
    # Clear the message.
    proto.Clear()
    self.assertEqual(proto.ByteSize(), 0)
    empty_proto = unittest_pb2.TestAllExtensions()
    self.assertEqual(proto, empty_proto)