[tfdbg] Mark the reasons for a number of tests decorated with run_v1_only

PiperOrigin-RevId: 336726372
Change-Id: Iff0197fca0a8e53fc164f9d9b1fa969f1475104b
diff --git a/tensorflow/python/debug/cli/cli_shared_test.py b/tensorflow/python/debug/cli/cli_shared_test.py
index 3182d29..2d461c9 100644
--- a/tensorflow/python/debug/cli/cli_shared_test.py
+++ b/tensorflow/python/debug/cli/cli_shared_test.py
@@ -105,7 +105,7 @@
       cli_shared.time_to_readable_str(100, force_time_unit="ks")
 
 
-@test_util.run_deprecated_v1
+@test_util.run_v1_only("tfdbg CLI is for tf.Session only")
 class GetRunStartIntroAndDescriptionTest(test_util.TensorFlowTestCase):
 
   def setUp(self):
@@ -319,7 +319,7 @@
     self.assertEqual("run #1: 1 fetch (a:0); 1 feed (foo)", short_description)
 
 
-@test_util.run_deprecated_v1
+@test_util.run_v1_only("tfdbg CLI is for tf.Session only")
 class GetErrorIntroTest(test_util.TensorFlowTestCase):
 
   def setUp(self):
diff --git a/tensorflow/python/debug/lib/common_test.py b/tensorflow/python/debug/lib/common_test.py
index f6413f6..8469700 100644
--- a/tensorflow/python/debug/lib/common_test.py
+++ b/tensorflow/python/debug/lib/common_test.py
@@ -27,7 +27,7 @@
 
 class CommonTest(test_util.TensorFlowTestCase):
 
-  @test_util.run_deprecated_v1
+  @test_util.run_v1_only("Relies on tensor name, which is unavailable in TF2")
   def testOnFeedOneFetch(self):
     a = constant_op.constant(10.0, name="a")
     b = constant_op.constant(20.0, name="b")
@@ -36,7 +36,7 @@
     self.assertItemsEqual(["a:0"], loaded[0])
     self.assertItemsEqual(["b:0"], loaded[1])
 
-  @test_util.run_deprecated_v1
+  @test_util.run_v1_only("Relies on tensor name, which is unavailable in TF2")
   def testGetRunKeyFlat(self):
     a = constant_op.constant(10.0, name="a")
     b = constant_op.constant(20.0, name="b")
@@ -45,7 +45,7 @@
     self.assertItemsEqual(["a:0"], loaded[0])
     self.assertItemsEqual(["a:0", "b:0"], loaded[1])
 
-  @test_util.run_deprecated_v1
+  @test_util.run_v1_only("Relies on tensor name, which is unavailable in TF2")
   def testGetRunKeyNestedFetches(self):
     a = constant_op.constant(10.0, name="a")
     b = constant_op.constant(20.0, name="b")
diff --git a/tensorflow/python/debug/lib/debug_gradients_test.py b/tensorflow/python/debug/lib/debug_gradients_test.py
index 95da6cb..e7a4d2d 100644
--- a/tensorflow/python/debug/lib/debug_gradients_test.py
+++ b/tensorflow/python/debug/lib/debug_gradients_test.py
@@ -36,7 +36,7 @@
 from tensorflow.python.training import gradient_descent
 
 
-@test_util.run_deprecated_v1
+@test_util.run_v1_only("Sessions are not available in TF 2.x")
 class IdentifyGradientTest(test_util.TensorFlowTestCase):
 
   def setUp(self):
diff --git a/tensorflow/python/debug/lib/source_utils_test.py b/tensorflow/python/debug/lib/source_utils_test.py
index d0a4ecd..366b25e 100644
--- a/tensorflow/python/debug/lib/source_utils_test.py
+++ b/tensorflow/python/debug/lib/source_utils_test.py
@@ -106,7 +106,7 @@
     self.assertTrue(
         source_utils.guess_is_tensorflow_py_library(source_utils.__file__))
 
-  @test_util.run_deprecated_v1
+  @test_util.run_v1_only("Tensor.op is not available in TF 2.x")
   def testFileInPythonKernelsPathReturnsTrue(self):
     x = constant_op.constant(42.0, name="x")
     self.assertTrue(
@@ -320,7 +320,7 @@
       source_utils.load_source(source_path)
 
 
-@test_util.run_v1_only("b/120545219")
+@test_util.run_v1_only("Sessions are not available in TF 2.x")
 class ListSourceAgainstDumpTest(test_util.TensorFlowTestCase):
 
   def createAndRunGraphWithWhileLoop(self):
diff --git a/tensorflow/python/debug/wrappers/disk_usage_test.py b/tensorflow/python/debug/wrappers/disk_usage_test.py
index 71c56b3..e9cb388 100644
--- a/tensorflow/python/debug/wrappers/disk_usage_test.py
+++ b/tensorflow/python/debug/wrappers/disk_usage_test.py
@@ -32,7 +32,7 @@
 from tensorflow.python.training import monitored_session
 
 
-@test_util.run_deprecated_v1
+@test_util.run_v1_only("Sessions are not available in TF 2.x")
 class DumpingDebugWrapperDiskUsageLimitTest(test_util.TensorFlowTestCase):
 
   @classmethod
diff --git a/tensorflow/python/debug/wrappers/framework_test.py b/tensorflow/python/debug/wrappers/framework_test.py
index 266404a..7ca0cf1 100644
--- a/tensorflow/python/debug/wrappers/framework_test.py
+++ b/tensorflow/python/debug/wrappers/framework_test.py
@@ -141,7 +141,7 @@
     return framework.OnRunEndResponse()
 
 
-@test_util.run_deprecated_v1
+@test_util.run_v1_only("Sessions are not available in TF 2.x")
 class DebugWrapperSessionTest(test_util.TensorFlowTestCase):
 
   def _no_rewrite_session_config(self):