code: def forward(self, inputs, device):
      x, t = inputs
      return (functions.binary_accuracy(x, t),)
  
imports: import unittest
  import numpy
  import six
  import chainer
  from chainer import functions
  from chainer import testing
  from chainer.utils import force_array
  from chainer.utils import type_check
label_desc: Use image node_id 3 for calling the TestBinaryAccuracyIgnoreAll obj's underlying member method code with example usage: obj.forward(inputs, device) and returns: functions