1 local iter = require "util.iterators";

     2 local set = require "util.set";

     3 

     4 describe("util.iterators", function ()

     5 	describe("join", function ()

     6 		it("should produce a joined iterator", function ()

     7 			local expect = { "a", "b", "c", 1, 2, 3 };

     8 			local output = {};

     9 			for x in iter.join(iter.values({"a", "b", "c"})):append(iter.values({1, 2, 3})) do

    10 				table.insert(output, x);

    11 			end

    12 			assert.same(output, expect);

    13 		end);

    14 	end);

    15 end);