Add broadcasting tests (CI not passed yet)

.travis.yml

@@ -0,0 +1,13 @@
+## Documentation: http://docs.travis-ci.com/user/languages/julia/
+language: julia
+os:
+  - linux
+julia:
+  - 1.5
+notifications:
+  email: false
+git:
+  depth: 99999999
+
+after_success:
+  - julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Codecov.submit(process_folder())'

Project.toml

@@ -13,7 +13,10 @@ Lazy = "0.15"
 julia = "1"
 
 [extras]
+CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"
+PooledArrays = "2dfb63ee-cc39-5dd5-95bd-886bf059d720"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test"]
+test = ["CategoricalArrays", "PooledArrays", "Random", "Test"]

src/AbstractWrappedDataFrames.jl

@@ -134,5 +134,9 @@ end
 #     return DataFrames.DataFrameRow(dataframe(sf), args...; kwargs...)
 # end
 
+# Fixes for the comprehensive tests below.
+
+# -- broadcasting.jl --
+Base.broadcastable(x::AbstractWrappedDataFrame) = dataframe(x)
 
 end