prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Write tests for bokeh templating software
  With the merge of #459, bokeh templating will be implemented for `jwql`.  We should address the test coverage for this software. 
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `jwql/bokeh_templating/example/main.py`
  Content:
  ```
  1 """
  2 This is a minimal example demonstrating how to create a Bokeh app using
  3 the ``bokeh-templating`` package and the associated YAML template files.
  4 
  5 Author
  6 -------
  7 
  8     - Graham Kanarek
  9 
  10 Dependencies
  11 ------------
  12 
  13     The user must have PyYAML, Bokeh, and the ``bokeh-templating``
  14     packages installed.
  15 """
  16 
  17 import os
  18 import numpy as np
  19 
  20 from jwql.bokeh_templating import BokehTemplate
  21 
  22 file_dir = os.path.dirname(os.path.realpath(__file__))
  23 
  24 
  25 class TestBokehApp(BokehTemplate):
  26     """This is a minimal ``BokehTemplate`` app."""
  27 
  28     def pre_init(self):
  29         """Before creating the Bokeh interface (by parsing the interface
  30         file), we must initialize our ``a`` and ``b`` variables, and set
  31         the path to the interface file.
  32         """
  33 
  34         self.a, self.b = 4, 2
  35 
  36         self.format_string = None
  37         self.interface_file = os.path.join(file_dir, "example_interface.yaml")
  38 
  39     # No post-initialization tasks are required.
  40     post_init = None
  41 
  42     @property
  43     def x(self):
  44         """The x-value of the Lissajous curves."""
  45         return 4. * np.sin(self.a * np.linspace(0, 2 * np.pi, 500))
  46 
  47     @property
  48     def y(self):
  49         """The y-value of the Lissajous curves."""
  50         return 3. * np.sin(self.b * np.linspace(0, 2 * np.pi, 500))
  51 
  52     def controller(self, attr, old, new):
  53         """This is the controller function which is used to update the
  54         curves when the sliders are adjusted. Note the use of the
  55         ``self.refs`` dictionary for accessing the Bokeh object
  56         attributes."""
  57         self.a = self.refs["a_slider"].value
  58         self.b = self.refs["b_slider"].value
  59 
  60         self.refs["figure_source"].data = {'x': self.x, 'y': self.y}
  61 
  62 
  63 TestBokehApp()
  64
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/jwql/bokeh_templating/example/main.py b/jwql/bokeh_templating/example/main.py
  --- a/jwql/bokeh_templating/example/main.py
  +++ b/jwql/bokeh_templating/example/main.py
  @@ -24,6 +24,8 @@
   
   class TestBokehApp(BokehTemplate):
       """This is a minimal ``BokehTemplate`` app."""
  +    
  +    _embed = True
   
       def pre_init(self):
           """Before creating the Bokeh interface (by parsing the interface
  
verification_info: {"golden_diff": "diff --git a/jwql/bokeh_templating/example/main.py b/jwql/bokeh_templating/example/main.py\n--- a/jwql/bokeh_templating/example/main.py\n+++ b/jwql/bokeh_templating/example/main.py\n@@ -24,6 +24,8 @@\n \n class TestBokehApp(BokehTemplate):\n     \"\"\"This is a minimal ``BokehTemplate`` app.\"\"\"\n+    \n+    _embed = True\n \n     def pre_init(self):\n         \"\"\"Before creating the Bokeh interface (by parsing the interface\n", "issue": "Write tests for bokeh templating software\nWith the merge of #459, bokeh templating will be implemented for `jwql`.  We should address the test coverage for this software. \n", "before_files": [{"content": "\"\"\"\nThis is a minimal example demonstrating how to create a Bokeh app using\nthe ``bokeh-templating`` package and the associated YAML template files.\n\nAuthor\n-------\n\n    - Graham Kanarek\n\nDependencies\n------------\n\n    The user must have PyYAML, Bokeh, and the ``bokeh-templating``\n    packages installed.\n\"\"\"\n\nimport os\nimport numpy as np\n\nfrom jwql.bokeh_templating import BokehTemplate\n\nfile_dir = os.path.dirname(os.path.realpath(__file__))\n\n\nclass TestBokehApp(BokehTemplate):\n    \"\"\"This is a minimal ``BokehTemplate`` app.\"\"\"\n\n    def pre_init(self):\n        \"\"\"Before creating the Bokeh interface (by parsing the interface\n        file), we must initialize our ``a`` and ``b`` variables, and set\n        the path to the interface file.\n        \"\"\"\n\n        self.a, self.b = 4, 2\n\n        self.format_string = None\n        self.interface_file = os.path.join(file_dir, \"example_interface.yaml\")\n\n    # No post-initialization tasks are required.\n    post_init = None\n\n    @property\n    def x(self):\n        \"\"\"The x-value of the Lissajous curves.\"\"\"\n        return 4. * np.sin(self.a * np.linspace(0, 2 * np.pi, 500))\n\n    @property\n    def y(self):\n        \"\"\"The y-value of the Lissajous curves.\"\"\"\n        return 3. * np.sin(self.b * np.linspace(0, 2 * np.pi, 500))\n\n    def controller(self, attr, old, new):\n        \"\"\"This is the controller function which is used to update the\n        curves when the sliders are adjusted. Note the use of the\n        ``self.refs`` dictionary for accessing the Bokeh object\n        attributes.\"\"\"\n        self.a = self.refs[\"a_slider\"].value\n        self.b = self.refs[\"b_slider\"].value\n\n        self.refs[\"figure_source\"].data = {'x': self.x, 'y': self.y}\n\n\nTestBokehApp()\n", "path": "jwql/bokeh_templating/example/main.py"}], "after_files": [{"content": "\"\"\"\nThis is a minimal example demonstrating how to create a Bokeh app using\nthe ``bokeh-templating`` package and the associated YAML template files.\n\nAuthor\n-------\n\n    - Graham Kanarek\n\nDependencies\n------------\n\n    The user must have PyYAML, Bokeh, and the ``bokeh-templating``\n    packages installed.\n\"\"\"\n\nimport os\nimport numpy as np\n\nfrom jwql.bokeh_templating import BokehTemplate\n\nfile_dir = os.path.dirname(os.path.realpath(__file__))\n\n\nclass TestBokehApp(BokehTemplate):\n    \"\"\"This is a minimal ``BokehTemplate`` app.\"\"\"\n    \n    _embed = True\n\n    def pre_init(self):\n        \"\"\"Before creating the Bokeh interface (by parsing the interface\n        file), we must initialize our ``a`` and ``b`` variables, and set\n        the path to the interface file.\n        \"\"\"\n\n        self.a, self.b = 4, 2\n\n        self.format_string = None\n        self.interface_file = os.path.join(file_dir, \"example_interface.yaml\")\n\n    # No post-initialization tasks are required.\n    post_init = None\n\n    @property\n    def x(self):\n        \"\"\"The x-value of the Lissajous curves.\"\"\"\n        return 4. * np.sin(self.a * np.linspace(0, 2 * np.pi, 500))\n\n    @property\n    def y(self):\n        \"\"\"The y-value of the Lissajous curves.\"\"\"\n        return 3. * np.sin(self.b * np.linspace(0, 2 * np.pi, 500))\n\n    def controller(self, attr, old, new):\n        \"\"\"This is the controller function which is used to update the\n        curves when the sliders are adjusted. Note the use of the\n        ``self.refs`` dictionary for accessing the Bokeh object\n        attributes.\"\"\"\n        self.a = self.refs[\"a_slider\"].value\n        self.b = self.refs[\"b_slider\"].value\n\n        self.refs[\"figure_source\"].data = {'x': self.x, 'y': self.y}\n\n\nTestBokehApp()\n", "path": "jwql/bokeh_templating/example/main.py"}]}