Add test for mixins/index.es
Add test for mixins/index.es

devpunks/snuggsi,snuggs/snuggsi,snuggs/snuggsi,devpunks/snuggsi,devpunks/snuggsi,devpunks/snuggsi,snuggs/snuggsi,snuggs/snuggsi,devpunks/snuggsi