fix fontfamily (#3542)

* fix fontfamily

* Update test_defaults.jl

src/components.jl

@@ -288,7 +288,7 @@ function font(args...;kw...)
 
   for symbol in keys(kw)
     if symbol == :family
-      family = kw[:family]
+      family = string(kw[:family])
     elseif symbol == :pointsize
       pointsize = kw[:pointsize]
     elseif symbol == :halign

test/runtests.jl

@@ -1,3 +1,4 @@
+using Plots: guidefont
 import ImageMagick
 using VisualRegressionTests
 using Plots

test/test_defaults.jl

@@ -1,10 +1,12 @@
 using Plots, Test
 
-const PLOTS_DEFAULTS = Dict(:theme => :wong2)
+const PLOTS_DEFAULTS = Dict(:theme => :wong2, :fontfamily => :palantino)
 Plots.__init__()
 
 @testset "Loading theme" begin
-    @test plot(1:5)[1][1][:seriescolor] == RGBA(colorant"black")
+    pl = plot(1:5)
+    @test pl[1][1][:seriescolor] == RGBA(colorant"black")
+    @test guidefont(pl[1][:xaxis]).family == "palantino"
 end
 
 empty!(PLOTS_DEFAULTS)