docstr: Test first form of where (return indices).
docstr_tok: ["Test","first","form","of","where","(","return","indices",")","."]
code: def testWhere(self):
      """Test first form of where (return indices)."""
  
      with self.session() as sess:
          with self.test_scope():
              x = array_ops.placeholder(dtypes.bool)
              true_vals = array_ops.where(x)
  
          # Output of the computation is dynamic.
          feed = [[True, False, False], [False, True, True]]
          self.assertAllEqual(
              [[0, 0], [1, 1], [1, 2]], sess.run(true_vals, {x: feed})
          )
  
file_path: tensorflow-upstream/tensorflow/compiler/tests/where_op_test.py
imports: from tensorflow.compiler.tests import xla_test
  from tensorflow.python.framework import config
  from tensorflow.python.framework import dtypes
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
  from tensorflow.python.tpu import tpu
label_desc: Use image node_id 2 for calling the WhereOpTest obj's underlying member method code with example usage: obj.testWhere() without return types