Add a couple of tests for maps
Add a couple of tests for maps

kelvinst/elixir,kimshrier/elixir,kelvinst/elixir,antipax/elixir,lexmag/elixir,pedrosnk/elixir,beedub/elixir,antipax/elixir,ggcampinho/elixir,gfvcastro/elixir,pedrosnk/elixir,michalmuskala/elixir,lexmag/elixir,joshprice/elixir,ggcampinho/elixir,kimshrier/elixir,gfvcastro/elixir,elixir-lang/elixir,beedub/elixir