Refactor tests for Object Detection API. (#8688)

Internal changes

--

PiperOrigin-RevId: 316837667

research/object_detection/metrics/calibration_evaluation_test.py → research/object_detection/metrics/calibration_evaluation_tf1_test.py

@@ -18,9 +18,11 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
+import unittest
 import tensorflow.compat.v1 as tf
 from object_detection.core import standard_fields
 from object_detection.metrics import calibration_evaluation
+from object_detection.utils import tf_version
 
 
 def _get_categories_list():
@@ -36,6 +38,7 @@ def _get_categories_list():
   }]
 
 
+@unittest.skipIf(tf_version.is_tf2(), 'Skipping TF1.X only test.')
 class CalibrationDetectionEvaluationTest(tf.test.TestCase):
 
   def _get_ece(self, ece_op, update_op):