diff --git a/system_tests/vision.py b/system_tests/vision.py
index 81cfa1f71257..120db0325e6d 100644
--- a/system_tests/vision.py
+++ b/system_tests/vision.py
@@ -64,6 +64,14 @@ def _assert_coordinate(self, coordinate):
         self.assertIsInstance(coordinate, (int, float))
         self.assertNotEqual(coordinate, 0.0)
 
+    def _assert_likelihood(self, likelihood):
+        from google.cloud.vision.likelihood import Likelihood
+
+        levels = [Likelihood.UNKNOWN, Likelihood.VERY_LIKELY,
+                  Likelihood.UNLIKELY, Likelihood.POSSIBLE, Likelihood.LIKELY,
+                  Likelihood.VERY_UNLIKELY]
+        self.assertIn(likelihood, levels)
+
 
 class TestVisionClientLogo(unittest.TestCase):
     def setUp(self):
@@ -130,14 +138,6 @@ def tearDown(self):
         for value in self.to_delete_by_case:
             value.delete()
 
-    def _assert_likelihood(self, likelihood):
-        from google.cloud.vision.likelihood import Likelihood
-
-        levels = [Likelihood.UNKNOWN, Likelihood.VERY_LIKELY,
-                  Likelihood.UNLIKELY, Likelihood.POSSIBLE, Likelihood.LIKELY,
-                  Likelihood.VERY_UNLIKELY]
-        self.assertIn(likelihood, levels)
-
     def _assert_landmarks(self, landmarks):
         from google.cloud.vision.face import Landmark
         from google.cloud.vision.face import LandmarkTypes
@@ -340,3 +340,55 @@ def test_detect_landmark_filename(self):
         self.assertEqual(len(landmarks), 1)
         landmark = landmarks[0]
         self._assert_landmark(landmark)
+
+
+class TestVisionClientSafeSearch(BaseVisionTestCase):
+    def setUp(self):
+        self.to_delete_by_case = []
+
+    def tearDown(self):
+        for value in self.to_delete_by_case:
+            value.delete()
+
+    def _assert_safe_search(self, safe_search):
+        from google.cloud.vision.safe import SafeSearchAnnotation
+
+        self.assertIsInstance(safe_search, SafeSearchAnnotation)
+        self._assert_likelihood(safe_search.adult)
+        self._assert_likelihood(safe_search.spoof)
+        self._assert_likelihood(safe_search.medical)
+        self._assert_likelihood(safe_search.violence)
+
+    def test_detect_safe_search_content(self):
+        client = Config.CLIENT
+        with open(FACE_FILE, 'rb') as image_file:
+            image = client.image(content=image_file.read())
+        safe_searches = image.detect_safe_search()
+        self.assertEqual(len(safe_searches), 1)
+        safe_search = safe_searches[0]
+        self._assert_safe_search(safe_search)
+
+    def test_detect_safe_search_gcs(self):
+        bucket_name = Config.TEST_BUCKET.name
+        blob_name = 'faces.jpg'
+        blob = Config.TEST_BUCKET.blob(blob_name)
+        self.to_delete_by_case.append(blob)  # Clean-up.
+        with open(FACE_FILE, 'rb') as file_obj:
+            blob.upload_from_file(file_obj)
+
+        source_uri = 'gs://%s/%s' % (bucket_name, blob_name)
+
+        client = Config.CLIENT
+        image = client.image(source_uri=source_uri)
+        safe_searches = image.detect_safe_search()
+        self.assertEqual(len(safe_searches), 1)
+        safe_search = safe_searches[0]
+        self._assert_safe_search(safe_search)
+
+    def test_detect_safe_search_filename(self):
+        client = Config.CLIENT
+        image = client.image(filename=FACE_FILE)
+        safe_searches = image.detect_safe_search()
+        self.assertEqual(len(safe_searches), 1)
+        safe_search = safe_searches[0]
+        self._assert_safe_search(safe_search)