text: """Tests for PrecisionOp."""
  import tensorflow.python.platform
  
  import numpy as np
  import tensorflow as tf
  
  
  class InTopKTest(tf.test.TestCase):
  
    def _validateInTopK(self, predictions, target, k, expected):
      np_ans = np.array(expected)
      with self.test_session():
        precision = tf.nn.in_top_k(predictions, target, k)
        out = precision.eval()
        self.assertAllClose(np_ans, out)
        self.assertShapeEqual(np_ans, precision)
  
    def testInTop1(self):
      predictions = [[0.1, 0.3, 0.2, 0.4], [0.1, 0.2, 0.3, 0.4]]
      target = [3, 1]
      self._validateInTopK(predictions, target, 1, [True, False])
  
    def testInTop2(self):
      predictions = [[0.1, 0.3, 0.2, 0.4], [0.1, 0.2, 0.3, 0.4]]
      target = [0, 2]
      self._validateInTopK(predictions, target, 2, [False, True])
  
    def testInTop2Tie(self):
      # Class 2 and 3 tie for 2nd, so both are considered in top 2.
      predictions = [[0.1, 0.3, 0.2, 0.2], [0.1, 0.3, 0.2, 0.2]]
      target = [2, 3]
      self._validateInTopK(predictions, target, 2, [True, True])
  
  
  if __name__ == "__main__":
    tf.test.main()
  