fix 0.7 depwarns (#368)

* update array constructors to 0.7

* replace linspace with range

* fix other 0.7 depwarns in tests

* switch to use Compat.Test

Author: ksmcreynolds

README.md

@@ -87,7 +87,8 @@ For example:
 
 ```
 using PyPlot
-x = linspace(0,2*pi,1000); y = sin.(3 * x + 4 * cos.(2 * x));
+# use x = linspace(0,2*pi,1000) in Julia 0.6
+x = range(0; stop=2*pi, length=1000); y = sin.(3 * x + 4 * cos.(2 * x));
 plot(x, y, color="red", linewidth=2.0, linestyle="--")
 title("A sinusoidally modulated sinusoid")
 ```

src/colormaps.jl

@@ -63,7 +63,7 @@ ColorMap(name::Union{AbstractString,Symbol},
          g::AbstractVector{Tuple{T,T,T}},
          b::AbstractVector{Tuple{T,T,T}},
          n=max(256,length(r),length(g),length(b)), gamma=1.0) where {T<:Real} =
-    ColorMap(name, r,g,b, Array{Tuple{T,T,T}}(0), n, gamma)
+    ColorMap(name, r,g,b, Array{Tuple{T,T,T}}(undef, 0), n, gamma)
 
 # as above, but also passing an alpha array
 function ColorMap(name::Union{AbstractString,Symbol},
@@ -88,11 +88,11 @@ function ColorMap(name::Union{AbstractString,Symbol},
     if nc == 0
         throw(ArgumentError("ColorMap requires a non-empty Colorant array"))
     end
-    r = Array{Tuple{Float64,Float64,Float64}}(nc)
+    r = Array{Tuple{Float64,Float64,Float64}}(undef, nc)
     g = similar(r)
     b = similar(r)
     a = T <: TransparentColor ?
-        similar(r) : Array{Tuple{Float64,Float64,Float64}}(0)
+        similar(r) : Array{Tuple{Float64,Float64,Float64}}(undef, 0)
     for i = 1:nc
         x = (i-1) / (nc-1)
         if T <: TransparentColor
@@ -158,7 +158,7 @@ get_cmaps() =
 function show(io::IO, ::MIME"image/svg+xml", cs::AbstractVector{ColorMap})
     n = 256
     nc = length(cs)
-    a = linspace(0,1,n)
+    a = Compat.range(0; stop=1, length=n)
     namelen = mapreduce(c -> length(c[:name]), max, cs)
     width = 0.5
     height = 5

test/runtests.jl

@@ -2,15 +2,10 @@ ENV["MPLBACKEND"]="agg" # no GUI
 
 using PyPlot, PyCall
 using Compat
+using Compat.Test
 
 VERSION >= v"0.7.0" && using Base64
 
-if isdefined(Base, :Test) && !Base.isdeprecated(Base, :Test)
-    using Base.Test
-else
-    using Test
-end
-
 plot(1:5, 2:6, "ro-")
 
 line = gca()[:lines][1]