code: def testTensorFlowImport(self):
      text = "import tensorflow as tf"
      expected_text = "import tensorflow.compat.v1 as tf"
      _, _, _, new_text = self._upgrade(text)
      self.assertEqual(expected_text, new_text)
  
      text = "import tensorflow as tf, other_import as y"
      expected_text = (
          "import tensorflow.compat.v1 as tf, other_import as y"
      )
      _, _, _, new_text = self._upgrade(text)
      self.assertEqual(expected_text, new_text)
  
      text = "import tensorflow"
      expected_text = "import tensorflow.compat.v1 as tensorflow"
      _, _, _, new_text = self._upgrade(text)
      self.assertEqual(expected_text, new_text)
  
      text = "import tensorflow.foo"
      expected_text = "import tensorflow.compat.v1.foo"
      _, _, _, new_text = self._upgrade(text)
      self.assertEqual(expected_text, new_text)
  
      text = "import tensorflow.foo as bar"
      expected_text = "import tensorflow.compat.v1.foo as bar"
      _, _, _, new_text = self._upgrade(text)
      self.assertEqual(expected_text, new_text)
  
file_path: tensorflow/tensorflow/tools/compatibility/tf_upgrade_v2_safety_test.py
imports: import io
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import test
  from tensorflow.tools.compatibility import ast_edits
  from tensorflow.tools.compatibility import tf_upgrade_v2_safety
label_desc: Use image node_id 3 for calling the TfUpgradeV2SafetyTest obj's underlying member method code with example usage: obj.testTensorFlowImport() without return types