diff --git a/tests/dags/good/timedelta-sensor.yaml b/tests/dags/good/timedelta-sensor.yaml
new file mode 100644
index 0000000..48ffec6
--- /dev/null
+++ b/tests/dags/good/timedelta-sensor.yaml
@@ -0,0 +1,45 @@
+#
+# Copyright 2019, Rambler Digital Solutions
+#
+# 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.
+#
+
+
+dags:
+  time_delta_sensor:
+    args:
+      start_date: 2017-07-27
+      schedule_interval: 1d
+    operators:
+      dummy_operator:
+        class: airflow.operators.dummy_operator:DummyOperator
+    sensors:
+      timedelta_sensor:
+        class: airflow.operators.sensors:TimeDeltaSensor
+        args:
+          delta: 6h
+    flow:
+      timedelta_sensor:
+      - dummy_operator
+    do:
+    - sensors:
+        dynamic_timedelta_sensor_{{ item.name }}:
+          class: airflow.operators.sensors:TimeDeltaSensor
+          args:
+            delta: '{{ item.sensor_delta }}'
+      flow:
+        dynamic_timedelta_sensor_{{ item.name }}:
+        - dummy_operator
+      with_items:
+        - name: 1h
+          sensor_delta: 1h
diff --git a/tests/test_timedelta_sensor.py b/tests/test_timedelta_sensor.py
new file mode 100644
index 0000000..1daadb8
--- /dev/null
+++ b/tests/test_timedelta_sensor.py
@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2019, Rambler Digital Solutions
+#
+# 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.
+#
+
+from __future__ import (
+    absolute_import,
+    division,
+    print_function,
+    unicode_literals,
+)
+
+import datetime
+
+from airflow import DAG
+
+import airflow_declarative
+
+
+try:
+    # Since Airflow 1.10
+    from airflow.sensors.time_delta_sensor import TimeDeltaSensor
+except ImportError:
+    from airflow.operators.sensors import TimeDeltaSensor
+
+
+def test_timedelta_sensor(good_dag_path):
+    path = good_dag_path('timedelta-sensor')
+    dags = airflow_declarative.from_path(path)
+
+    assert len(dags) == 1
+
+    yml_dag = dags[0]
+
+    assert isinstance(yml_dag, DAG)
+
+    expected_tasks = {'dummy_operator', 'timedelta_sensor', 'dynamic_timedelta_sensor_1h'}
+    assert set(yml_dag.task_ids) == expected_tasks
+
+    timedelta_sensor = yml_dag.task_dict['timedelta_sensor']
+    assert isinstance(timedelta_sensor, TimeDeltaSensor)
+    assert isinstance(timedelta_sensor.delta, datetime.timedelta)
+    assert 6 == timedelta_sensor.delta.hours
+
+    dynamic_timedelta_sensor_1h = yml_dag.task_dict['dynamic_timedelta_sensor_1h']
+    assert isinstance(dynamic_timedelta_sensor_1h, TimeDeltaSensor)
+    assert isinstance(dynamic_timedelta_sensor_1h.delta, datetime.timedelta)
+    assert 1 == dynamic_timedelta_sensor_1h.delta.hours