class_docstr: Test cases for unary operators.
class_docstr_tok: ["Test","cases","for","unary","operators","."]
code: def testToBool(self):
      for dtype in self.numeric_types - self.complex_types:
          self._assertOpOutputMatchesExpected(
              gen_functional_ops.to_bool,
              np.array(5, dtype=dtype),
              expected=np.array(True),
          )
  
          self._assertOpOutputMatchesExpected(
              gen_functional_ops.to_bool,
              np.array(0, dtype=dtype),
              expected=np.array(False),
          )
  
          self._assertOpOutputMatchesExpected(
              gen_functional_ops.to_bool,
              np.array([], dtype=dtype),
              expected=np.array(False),
          )
  
          self._assertOpOutputMatchesExpected(
              gen_functional_ops.to_bool,
              np.array([1, 2, 3], dtype=dtype),
              expected=np.array(True),
          )
  
imports: import platform
  import unittest
  import numpy
  import six
  from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import array_ops_stack
  from tensorflow.python.ops import bitwise_ops
  from tensorflow.python.ops import gen_functional_ops
  from tensorflow.python.ops import gen_nn_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import nn_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 34 for calling the UnaryOpsTest obj's underlying member method code with example usage: obj.testToBool() without return types