matminer wrapper has no tests

[shyuep]

matminer wrapper has no tests

[chc273]

@shyuep So far the wrapper is just a helper function to convert ElementProperty featurizer in matminer to maml describer. The converted ElementProperty is tested in compositional describers. I did only test the converted classes, not the wrapper itself. Also I have not tried the wrapper against all available featurizers in matminer, since those are currently not used. This part needs more work in future developments.

[shyuep]

Now the tests are failing and I am unclear why. I am not even sure what the super call is referring to when it asks for new class??

[chc273]

I will look into the errors. Currently the wrapper is more of a hack to make some of the featurizers in matminer to work in maml. I dont have a more elegant solution on top of my head as of now.. we can discuss about this further.

[chc273]

As for the failing tests, the issue is that we cannot use super() outside a class without arguments.
https://docs.python.org/3/library/functions.html#super It has to be the super(some_class, self) form.

"The zero argument form only works inside a class definition, as the compiler fills in the necessary details to correctly retrieve the class being defined, as well as accessing the current instance for ordinary methods."