loop thru an array that is created in an it block

I am writing a code where my "it" block generates an array, and i like to loop through it and do some tests in the same describe block, i tried writing that array to file and access it but those tests executes first before i write to it.i Cant access "a" outside mocha tests, but i like to whether there is anyway to do it?

        it("test",function(done){
        a=[1,2,3]
        })

        a.forEach(function(i){
        it("test1",function(done){
        console.log(i)
        })
})

via Kumar Mantri