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dagster

Hi, is there an example somewhere of using `mock_resource`?

Here’s an example from the docs site: <https://docs.dagster.io/concepts/testing#testing-graphs>

`mock_resource` is just a thin wrapper around a `mock.MagicMock()` object

Thanks! Sorry I'm not super good at using MagicMock. Do you happen to know how to mock the return_value of the resource?

As opposed to using `ResourceDefinition.mock_resource()`, I think you probably want to wrap your own mocked resource then:
```my_resource = ResourceDefinition(resource_fn=lambda _context: mock.MagicMock(return_value="hiiii"))```

hm it doesn't work...I think I need to mock patch

``` dagster.core.errors.DagsterTypeCheckDidNotPass: Type check failed for op "leadlag_entities" output "result" - expected type "DataFrame". Description: Value of type &lt;class 'unittest.mock.MagicMock'&gt; failed type check for Dagster type DataFrame, expected value to be of Python type pandas.core.frame.DataFrame.```

oh well, I ended up patching my actual resource methods

it would be great to get an example sometime for mocking resources with MagicMock, thanks!!

Oh sorry.  if you include a snippet of what your resource usage looks like, I can help fill something in.

Maybe something like this:
```@resource()
def mocked_resource():
     # returns an object that has a method generate_dataframe which returns a DataFrame
     foo = mock.MagicMock()
     foo.generate_dataframe.return_value = DataFrame()
     return foo

@op(required_resource_key={"df_generator"})
def my_op(context):
    df = context.resources.df_generator.generate_dataframe()
    ...
    return df

@job(resource_defs={"df_generator": mocked_resource})
def my_job():
    my_op()```

Oh I think I see. In my asset, I call this resource method
``` context.resources.secmaster_db.get_entity_universe()```