Merge in path-changing API

model_server/api.py

@@ -30,6 +30,8 @@ def list_session_paths():
 
 def change_path(key, path):
     try:
+        if session.get_paths()[key] == path:
+            return session.get_paths()
         session.set_data_directory(key, path)
     except InvalidPathError as e:
         raise HTTPException(

tests/test_api.py

@@ -155,4 +155,20 @@ class TestApiFromAutomatedClient(TestServerBaseClass):
         resp_check = requests.get(
             self.uri + 'paths'
         )
-        self.assertEqual(resp_inpath.json()['inbound_images'], resp_check.json()['inbound_images'])
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+        self.assertEqual(resp_inpath.json()['outbound_images'], resp_check.json()['outbound_images'])
+
+    def test_no_change_inbound_path(self):
+        resp_inpath = requests.get(
+            self.uri + 'paths'
+        )
+        resp_change = requests.put(
+            self.uri + f'paths/watch_output',
+            params={
+                'path': resp_inpath.json()['outbound_images']
+            }
+        )
+        self.assertEqual(resp_change.status_code, 200)
+        resp_check = requests.get(
+            self.uri + 'paths'
+        )
+        self.assertEqual(resp_inpath.json()['outbound_images'], resp_check.json()['outbound_images'])
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