As we have method in jasmine to match array without the order (arrayContaining), similar thing i'm looking in webdriver.
var array1 = [a,b];
var array2 = [b,a];
expect(array1).to.containArray(array2); // something like this ignoring order
Could be useful for someone, here is the solution for it.
expect(array1).to.have.members(array2);