Completely minor style issues:

- in keeping with golint style capitalization rules, please abbreviate acronyms in consistent caps (i.e. `unmarshalledKSM`). 
- please split long lines with one element per newline and a trailing comma on the last, e.g.

```
t.Errorf(
    "Long error string. Original: %v, JSON: %v, result: %v",
    ksm,
    jsonData,
    unmarshalledKSM,
)
```