added tests for dict with symbols in keys and different types

Author: racinmat

test/runtests.jl

@@ -42,6 +42,8 @@ end
   @test roundtrip_equal(Set([1,2,3]))
   @test roundtrip_equal(Dict("a"=>1))
   @test roundtrip_equal(T(()))
+  @test roundtrip_equal(Dict(:a => 1,:b => [1, 2]))
+  @test roundtrip_equal(Dict(:a => [1+2im, 3+4im], :b => "Hello, World!"))
 end
 
 @testset "Circular References" begin