# Copyright 2018 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Tests for tensorflow.kernels.logging_ops."""

from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

import sys

from tensorflow.python.framework import test_util
from tensorflow.python.ops import logging_ops
from tensorflow.python.ops import math_ops
from tensorflow.python.platform import test
from tensorflow.python.platform import tf_logging


class PrintV2LoggingLevelTest(test.TestCase):

  @test_util.run_in_graph_and_eager_modes()
  def testPrintOneTensorLogInfo(self):
    with self.cached_session():
      tensor = math_ops.range(10)
      with self.captureWritesToStream(sys.stderr) as printed:
        print_op = logging_ops.print_v2(
            tensor, output_stream=tf_logging.info)
        self.evaluate(print_op)
      self.assertTrue("I" in printed.contents())
      expected = "[0 1 2 ... 7 8 9]"
      self.assertTrue(expected in printed.contents())

  @test_util.run_in_graph_and_eager_modes()
  def testPrintOneTensorLogWarning(self):
    with self.cached_session():
      tensor = math_ops.range(10)
      with self.captureWritesToStream(sys.stderr) as printed:
        print_op = logging_ops.print_v2(
            tensor, output_stream=tf_logging.warning)
        self.evaluate(print_op)
      self.assertTrue("W" in printed.contents())
      expected = "[0 1 2 ... 7 8 9]"
      self.assertTrue(expected in printed.contents())

  @test_util.run_in_graph_and_eager_modes()
  def testPrintOneTensorLogError(self):
    with self.cached_session():
      tensor = math_ops.range(10)
      with self.captureWritesToStream(sys.stderr) as printed:
        print_op = logging_ops.print_v2(
            tensor, output_stream=tf_logging.error)
        self.evaluate(print_op)
      self.assertTrue("E" in printed.contents())
      expected = "[0 1 2 ... 7 8 9]"
      self.assertTrue(expected in printed.contents())


if __name__ == "__main__":
  test.main()