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.venv/Lib/site-packages/notebook/tests/selenium/test_dualmode_cellmode.py

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+"""Test keyboard shortcuts that change the cell's mode."""
+
+def test_dualmode_cellmode(notebook):
+    def get_cell_cm_mode(index):
+        code_mirror_mode = notebook.browser.execute_script(
+            "return Jupyter.notebook.get_cell(%s).code_mirror.getMode().name;"%index)
+        return code_mirror_mode
+    
+    
+    index = 0
+    a = 'hello\nmulti\nline'
+    
+    notebook.edit_cell(index=index, content=a)
+
+    """check for the default cell type"""
+    notebook.to_command_mode()
+    notebook.body.send_keys("r")
+    assert notebook.get_cell_type(index) == 'raw'
+    assert get_cell_cm_mode(index) == 'null'
+
+    """check cell type after changing to markdown"""
+    notebook.body.send_keys("1")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '# ' + a
+    assert get_cell_cm_mode(index) == 'ipythongfm'
+
+    notebook.body.send_keys("2")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '## ' + a
+    
+    notebook.body.send_keys("3")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '### ' + a
+
+    notebook.body.send_keys("4")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '#### ' + a
+
+    notebook.body.send_keys("5")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '##### ' + a
+
+    notebook.body.send_keys("6")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '###### ' + a
+
+    notebook.body.send_keys("m")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '###### ' + a
+
+    notebook.body.send_keys("y")
+    assert notebook.get_cell_type(index) == 'code'
+    assert notebook.get_cell_contents(index) == '###### ' + a
+    assert get_cell_cm_mode(index) == 'ipython'
+
+    notebook.body.send_keys("1")
+    assert notebook.get_cell_type(index) == 'markdown'
+    assert notebook.get_cell_contents(index) == '# ' + a