fix tests

spyder_kernels/console/kernel.py

@@ -528,7 +528,7 @@ def get_mpl_interactive_backend(self):
         if framework is None:
             # Since no interactive backend has been set yet, this is
             # equivalent to having the inline one.
-            return 0
+            return 'inline'
         elif framework in mapping:
             return MPL_BACKENDS_TO_SPYDER[mapping[framework]]
         else:

spyder_kernels/console/tests/test_console_kernel.py

@@ -1168,6 +1168,9 @@ def test_get_interactive_backend(backend):
         user_expressions = reply['content']['user_expressions']
         value = user_expressions['output']['data']['text/plain']
 
+        # remove quotes
+        value = value[1:-1]
+
         # Assert we got the right interactive backend
         if backend is not None:
             assert value == backend