Code to run Chuffed (mostly by @odow).

Copied from JuliaConstraints/ConstraintProgrammingExtensions.jl#24 (comment)

Author: dourouc05

src/Chuffed.jl

@@ -13,6 +13,15 @@ module FZN
 include("FlatZincOptimizer.jl")
 end
 
+function run_chuffed(args)
+    io = IOBuffer()
+    Chuffed_jll.fznchuffed() do exe
+        return run(pipeline(`$(exe) $(args)`; stdout = io))
+    end
+    seekstart(io)
+    return String(take!(io))
+end
+
 function Optimizer(; stdin::IO=stdin, stdout::IO=stdout)
     return FZN.Optimizer(Chuffed_jll.run_chuffed; stdin=stdin, stdout=stdout)
 end

test/parsing.jl

@@ -1,3 +1,8 @@
 @testset "Parsing FlatZinc output format" begin
-    
+    @testset "puzzle.fzn" begin
+        in_file_name = @__DIR__() * "/assets/puzzle.fzn"
+        out_string = Chuffed.run_chuffed(in_file_name)
+        @show out_string
+        @show Chuffed.FZN._parse_to_fznresults(out_string)
+    end
 end