Code Coverage is given at https://codecov.io/gh/JuliaMath/DoubleFloats.jl/tree/master/src.
Test directory
runtests.jl includes a file for each special focus of testing (see below).
specialvalues.jl tests DoubleFloat versions of Inf, NaN, typemax(T), typemin(T), floatmax(T), floatmin(T), maxintfloat(T),
and associated predicates isinf(x), isnan(x),