Test maketerm keeping array type when symtype is Array

Author: bowenszhu

test/basics.jl

@@ -249,6 +249,11 @@ end
     @syms x::Int y::Int 
     new_expr = SymbolicUtils.maketerm(typeof(ref_expr), (+), [x, y], nothing)
     @test symtype(new_expr) == Int64
+
+    # Check that the Array type does not get changed to AbstractArray
+    new_expr = SymbolicUtils.maketerm(
+        SymbolicUtils.BasicSymbolic{Vector{Float64}}, sin, [1.0, 2.0], nothing)
+    @test symtype(new_expr) == Vector{Float64}
 end
 
 toterm(t) = Term{symtype(t)}(operation(t), arguments(t))