Python google.protobuf.message 模块，optional_float() 实例源码

我们从Python开源项目中，提取了以下40个代码示例，用于说明如何使用google.protobuf.message.optional_float()。

项目：Vector-Tiles-Reader-QGIS-Plugin 作者：geometalab | 项目源码 | 文件源码

def testPositiveInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCD\x02\x00\x00\x80\x7F'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    else:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCA\x02\x04\x00\x00\x80\x7F'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\x7F')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：Vector-Tiles-Reader-QGIS-Plugin 作者：geometalab | 项目源码 | 文件源码

def testNegativeInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCD\x02\x00\x00\x80\xFF'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    else:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCA\x02\x04\x00\x00\x80\xFF'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\xFF')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：Vector-Tiles-Reader-QGIS-Plugin 作者：geometalab | 项目源码 | 文件源码

def testNotANumber(self, message_module):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = message_module.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testNotANumber(self):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = unittest_pb2.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testNotANumber(self):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = unittest_pb2.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testNotANumber(self):
    golden_data = ('\x5D\x00\x00\xC0\x7F'
                   '\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   '\xCD\x02\x00\x00\xC0\x7F'
                   '\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = unittest_pb2.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testPositiveInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCD\x02\x00\x00\x80\x7F'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    else:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCA\x02\x04\x00\x00\x80\x7F'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\x7F')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testNotANumber(self, message_module):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = message_module.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：go2mapillary 作者：enricofer | 项目源码 | 文件源码

def testPositiveInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCD\x02\x00\x00\x80\x7F'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    else:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCA\x02\x04\x00\x00\x80\x7F'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\x7F')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：go2mapillary 作者：enricofer | 项目源码 | 文件源码

def testNegativeInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCD\x02\x00\x00\x80\xFF'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    else:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCA\x02\x04\x00\x00\x80\xFF'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\xFF')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：go2mapillary 作者：enricofer | 项目源码 | 文件源码

def testNotANumber(self, message_module):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = message_module.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testPositiveInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCD\x02\x00\x00\x80\x7F'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    else:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCA\x02\x04\x00\x00\x80\x7F'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\x7F')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testNegativeInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCD\x02\x00\x00\x80\xFF'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    else:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCA\x02\x04\x00\x00\x80\xFF'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\xFF')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testNotANumber(self, message_module):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = message_module.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testPositiveInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCD\x02\x00\x00\x80\x7F'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    else:
      golden_data = (b'\x5D\x00\x00\x80\x7F'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                     b'\xCA\x02\x04\x00\x00\x80\x7F'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\x7F')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testNegativeInfinity(self, message_module):
    if message_module is unittest_pb2:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCD\x02\x00\x00\x80\xFF'
                     b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    else:
      golden_data = (b'\x5D\x00\x00\x80\xFF'
                     b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                     b'\xCA\x02\x04\x00\x00\x80\xFF'
                     b'\xD2\x02\x08\x00\x00\x00\x00\x00\x00\xF0\xFF')

    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testNotANumber(self, message_module):
    golden_data = (b'\x5D\x00\x00\xC0\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF8\x7F'
                   b'\xCD\x02\x00\x00\xC0\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF8\x7F')
    golden_message = message_module.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(isnan(golden_message.optional_float))
    self.assertTrue(isnan(golden_message.optional_double))
    self.assertTrue(isnan(golden_message.repeated_float[0]))
    self.assertTrue(isnan(golden_message.repeated_double[0]))

    # The protocol buffer may serialize to any one of multiple different
    # representations of a NaN.  Rather than verify a specific representation,
    # verify the serialized string can be converted into a correctly
    # behaving protocol buffer.
    serialized = golden_message.SerializeToString()
    message = message_module.TestAllTypes()
    message.ParseFromString(serialized)
    self.assertTrue(isnan(message.optional_float))
    self.assertTrue(isnan(message.optional_double))
    self.assertTrue(isnan(message.repeated_float[0]))
    self.assertTrue(isnan(message.repeated_double[0]))

项目：Vector-Tiles-Reader-QGIS-Plugin 作者：geometalab | 项目源码 | 文件源码

def testFloatPrinting(self, message_module):
    message = message_module.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testPositiveInfinity(self):
    golden_data = (b'\x5D\x00\x00\x80\x7F'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                   b'\xCD\x02\x00\x00\x80\x7F'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testNegativeInfinity(self):
    golden_data = (b'\x5D\x00\x00\x80\xFF'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                   b'\xCD\x02\x00\x00\x80\xFF'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testFloatPrinting(self):
    message = unittest_pb2.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testNegativeInfinity(self):
    golden_data = (b'\x5D\x00\x00\x80\xFF'
                   b'\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                   b'\xCD\x02\x00\x00\x80\xFF'
                   b'\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testFloatPrinting(self):
    message = unittest_pb2.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testPositiveInfinity(self):
    golden_data = ('\x5D\x00\x00\x80\x7F'
                   '\x61\x00\x00\x00\x00\x00\x00\xF0\x7F'
                   '\xCD\x02\x00\x00\x80\x7F'
                   '\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\x7F')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsPosInf(golden_message.optional_float))
    self.assertTrue(IsPosInf(golden_message.optional_double))
    self.assertTrue(IsPosInf(golden_message.repeated_float[0]))
    self.assertTrue(IsPosInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testNegativeInfinity(self):
    golden_data = ('\x5D\x00\x00\x80\xFF'
                   '\x61\x00\x00\x00\x00\x00\x00\xF0\xFF'
                   '\xCD\x02\x00\x00\x80\xFF'
                   '\xD1\x02\x00\x00\x00\x00\x00\x00\xF0\xFF')
    golden_message = unittest_pb2.TestAllTypes()
    golden_message.ParseFromString(golden_data)
    self.assertTrue(IsNegInf(golden_message.optional_float))
    self.assertTrue(IsNegInf(golden_message.optional_double))
    self.assertTrue(IsNegInf(golden_message.repeated_float[0]))
    self.assertTrue(IsNegInf(golden_message.repeated_double[0]))
    self.assertEqual(golden_data, golden_message.SerializeToString())

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testFloatPrinting(self, message_module):
    message = message_module.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：go2mapillary 作者：enricofer | 项目源码 | 文件源码

def testFloatPrinting(self, message_module):
    message = message_module.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testFloatPrinting(self, message_module):
    message = message_module.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testFloatPrinting(self, message_module):
    message = message_module.TestAllTypes()
    message.optional_float = 2.0
    self.assertEqual(str(message), 'optional_float: 2.0\n')

项目：Vector-Tiles-Reader-QGIS-Plugin 作者：geometalab | 项目源码 | 文件源码

def testExtremeFloatValues(self, message_module):
    message = message_module.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testExtremeFloatValues(self):
    message = unittest_pb2.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：protoc-gen-lua-bin 作者：u0u0 | 项目源码 | 文件源码

def testExtremeFloatValues(self):
    message = unittest_pb2.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testExtremeFloatValues(self):
    message = unittest_pb2.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testExtremeFloatValues(self, message_module):
    message = message_module.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：coremltools 作者：apple | 项目源码 | 文件源码

def testFieldPresence(self):
    message = unittest_proto3_arena_pb2.TestAllTypes()

    # We can't test presence of non-repeated, non-submessage fields.
    with self.assertRaises(ValueError):
      message.HasField('optional_int32')
    with self.assertRaises(ValueError):
      message.HasField('optional_float')
    with self.assertRaises(ValueError):
      message.HasField('optional_string')
    with self.assertRaises(ValueError):
      message.HasField('optional_bool')

    # But we can still test presence of submessage fields.
    self.assertFalse(message.HasField('optional_nested_message'))

    # As with proto2, we can't test presence of fields that don't exist, or
    # repeated fields.
    with self.assertRaises(ValueError):
      message.HasField('field_doesnt_exist')

    with self.assertRaises(ValueError):
      message.HasField('repeated_int32')
    with self.assertRaises(ValueError):
      message.HasField('repeated_nested_message')

    # Fields should default to their type-specific default.
    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)

    # Setting a submessage should still return proper presence information.
    message.optional_nested_message.bb = 0
    self.assertTrue(message.HasField('optional_nested_message'))

    # Set the fields to non-default values.
    message.optional_int32 = 5
    message.optional_float = 1.1
    message.optional_string = 'abc'
    message.optional_bool = True
    message.optional_nested_message.bb = 15

    # Clearing the fields unsets them and resets their value to default.
    message.ClearField('optional_int32')
    message.ClearField('optional_float')
    message.ClearField('optional_string')
    message.ClearField('optional_bool')
    message.ClearField('optional_nested_message')

    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)

项目：go2mapillary 作者：enricofer | 项目源码 | 文件源码

def testExtremeFloatValues(self, message_module):
    message = message_module.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testExtremeFloatValues(self, message_module):
    message = message_module.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：rpcDemo 作者：Tangxinwei | 项目源码 | 文件源码

def testFieldPresence(self):
    message = unittest_proto3_arena_pb2.TestAllTypes()

    # We can't test presence of non-repeated, non-submessage fields.
    with self.assertRaises(ValueError):
      message.HasField('optional_int32')
    with self.assertRaises(ValueError):
      message.HasField('optional_float')
    with self.assertRaises(ValueError):
      message.HasField('optional_string')
    with self.assertRaises(ValueError):
      message.HasField('optional_bool')

    # But we can still test presence of submessage fields.
    self.assertFalse(message.HasField('optional_nested_message'))

    # As with proto2, we can't test presence of fields that don't exist, or
    # repeated fields.
    with self.assertRaises(ValueError):
      message.HasField('field_doesnt_exist')

    with self.assertRaises(ValueError):
      message.HasField('repeated_int32')
    with self.assertRaises(ValueError):
      message.HasField('repeated_nested_message')

    # Fields should default to their type-specific default.
    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)

    # Setting a submessage should still return proper presence information.
    message.optional_nested_message.bb = 0
    self.assertTrue(message.HasField('optional_nested_message'))

    # Set the fields to non-default values.
    message.optional_int32 = 5
    message.optional_float = 1.1
    message.optional_string = 'abc'
    message.optional_bool = True
    message.optional_nested_message.bb = 15

    # Clearing the fields unsets them and resets their value to default.
    message.ClearField('optional_int32')
    message.ClearField('optional_float')
    message.ClearField('optional_string')
    message.ClearField('optional_bool')
    message.ClearField('optional_nested_message')

    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testExtremeFloatValues(self, message_module):
    message = message_module.TestAllTypes()

    # Most positive exponent, no significand bits set.
    kMostPosExponentNoSigBits = math.pow(2, 127)
    message.optional_float = kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentNoSigBits)

    # Most positive exponent, one significand bit set.
    kMostPosExponentOneSigBit = 1.5 * math.pow(2, 127)
    message.optional_float = kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostPosExponentOneSigBit)

    # Repeat last two cases with values of same magnitude, but negative.
    message.optional_float = -kMostPosExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentNoSigBits)

    message.optional_float = -kMostPosExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostPosExponentOneSigBit)

    # Most negative exponent, no significand bits set.
    kMostNegExponentNoSigBits = math.pow(2, -127)
    message.optional_float = kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentNoSigBits)

    # Most negative exponent, one significand bit set.
    kMostNegExponentOneSigBit = 1.5 * math.pow(2, -127)
    message.optional_float = kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == kMostNegExponentOneSigBit)

    # Repeat last two cases with values of the same magnitude, but negative.
    message.optional_float = -kMostNegExponentNoSigBits
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentNoSigBits)

    message.optional_float = -kMostNegExponentOneSigBit
    message.ParseFromString(message.SerializeToString())
    self.assertTrue(message.optional_float == -kMostNegExponentOneSigBit)

项目：googleURLParser 作者：randomaccess3 | 项目源码 | 文件源码

def testFieldPresence(self):
    message = unittest_proto3_arena_pb2.TestAllTypes()

    # We can't test presence of non-repeated, non-submessage fields.
    with self.assertRaises(ValueError):
      message.HasField('optional_int32')
    with self.assertRaises(ValueError):
      message.HasField('optional_float')
    with self.assertRaises(ValueError):
      message.HasField('optional_string')
    with self.assertRaises(ValueError):
      message.HasField('optional_bool')

    # But we can still test presence of submessage fields.
    self.assertFalse(message.HasField('optional_nested_message'))

    # As with proto2, we can't test presence of fields that don't exist, or
    # repeated fields.
    with self.assertRaises(ValueError):
      message.HasField('field_doesnt_exist')

    with self.assertRaises(ValueError):
      message.HasField('repeated_int32')
    with self.assertRaises(ValueError):
      message.HasField('repeated_nested_message')

    # Fields should default to their type-specific default.
    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)

    # Setting a submessage should still return proper presence information.
    message.optional_nested_message.bb = 0
    self.assertTrue(message.HasField('optional_nested_message'))

    # Set the fields to non-default values.
    message.optional_int32 = 5
    message.optional_float = 1.1
    message.optional_string = 'abc'
    message.optional_bool = True
    message.optional_nested_message.bb = 15

    # Clearing the fields unsets them and resets their value to default.
    message.ClearField('optional_int32')
    message.ClearField('optional_float')
    message.ClearField('optional_string')
    message.ClearField('optional_bool')
    message.ClearField('optional_nested_message')

    self.assertEqual(0, message.optional_int32)
    self.assertEqual(0, message.optional_float)
    self.assertEqual('', message.optional_string)
    self.assertEqual(False, message.optional_bool)
    self.assertEqual(0, message.optional_nested_message.bb)