extra tests

nbgrader/tests/preprocessors/test_instantiatetests.py

@@ -89,26 +89,28 @@ def test_consistent_release_version(self, preprocessor):
         assert nb1['cells'][1]['source'] == nb2['cells'][1]['source']
 
     # test that autotest starts a kernel that uses the `path` metadata as working directory
-    def test_kernel_workingdir(self, preprocessor, caplog):
+    # with the right path, the kernel should load the file
+    def test_kernel_right_workingdir(self, preprocessor, caplog):
         sol_cell = create_autotest_solution_cell()
         test_cell = create_autotest_test_cell()
         load_cell = create_file_loader_cell('grades.csv')
         test_cell.metadata['nbgrader'] = {'grade': True}
 
-        ## with the right path, the kernel should load the file
-        #nb = new_notebook()
-        #nb.metadata['kernelspec'] = {
-        #    "name": "python3"
-        #}
-        #nb.cells.append(sol_cell)
-        #nb.cells.append(test_cell)
-        #nb.cells.append(load_cell)
-        #resources = {
-        #    'metadata': {'path': 'nbgrader/docs/source/user_guide/'}
-        #}
-        #nb, resources = preprocessor.preprocess(nb, resources)
+        nb = new_notebook()
+        nb.metadata['kernelspec'] = {
+            "name": "python3"
+        }
+        nb.cells.append(sol_cell)
+        nb.cells.append(test_cell)
+        nb.cells.append(load_cell)
+        resources = {
+            'metadata': {'path': 'nbgrader/docs/source/user_guide/'}
+        }
+        nb, resources = preprocessor.preprocess(nb, resources)
 
-        # without the right path, the kernel should report an error
+    # test that autotest starts a kernel that uses the `path` metadata as working directory
+    # without the right path, the kernel should report an error
+    def test_kernel_wrong_workingdir(self, preprocessor, caplog):
         nb = new_notebook()
         nb.metadata['kernelspec'] = {
             "name": "python3"