local pubsub;

setup(function ()

	pubsub = require "util.pubsub";

end);

describe("util.pubsub", function ()

	describe("simple node creation and deletion", function ()

		-- Roughly a port of scansion/scripts/pubsub_createdelete.scs

		local service = pubsub.new();

		describe("#create", function ()

			it("creates a new node", function ()

				assert.truthy(service:create("princely_musings", true));

			end);

			it("fails to create the same node again", function ()

				assert.falsy(service:create("princely_musings", true));

			end);

		end);

		describe("#delete", function ()

			it("deletes the node", function ()

				assert.truthy(service:delete("princely_musings", true));

			end);

			it("can't delete an already deleted node", function ()

				assert.falsy(service:delete("princely_musings", true));

			end);

		end);

	end);

	describe("simple publishing", function ()

		local broadcaster = spy.new(function () end);

		local service = pubsub.new({

			broadcaster = broadcaster;

		});

		it("creates a node", function ()

			assert.truthy(service:create("node", true));

		end);

		it("lets someone subscribe", function ()

			assert.truthy(service:add_subscription("node", true, "someone"));

		end);

		it("publishes an item", function ()

			assert.truthy(service:publish("node", true, "1", "item 1"));

		end);

		it("called the broadcaster", function ()

			assert.spy(broadcaster).was_called();

		end);

		it("should return one item", function ()

			local ok, ret = service:get_items("node", true);

			assert.truthy(ok);

			assert.same({ "1", ["1"] = "item 1" }, ret);

		end);

	end);

	describe("#issue1082", function ()

		local service = pubsub.new();

		it("creates a node with max_items = 1", function ()

			assert.truthy(service:create("node", true, { max_items = 1 }));

		end);

		it("changes max_items to 2", function ()

			assert.truthy(service:set_node_config("node", true, { max_items = 2 }));

		end);

		it("publishes one item", function ()

			assert.truthy(service:publish("node", true, "1", "item 1"));

		end);

		it("should return one item", function ()

			local ok, ret = service:get_items("node", true);

			assert.truthy(ok);

			assert.same({ "1", ["1"] = "item 1" }, ret);

		end);

		it("publishes another item", function ()

			assert.truthy(service:publish("node", true, "2", "item 2"));

		end);

		it("should return two items", function ()

			local ok, ret = service:get_items("node", true);

			assert.truthy(ok);

			assert.same({

				"2",

				"1",

				["1"] = "item 1",

				["2"] = "item 2",

			}, ret);

		end);

		it("publishes yet another item", function ()

			assert.truthy(service:publish("node", true, "3", "item 3"));

		end);

		it("should still return only two items", function ()

			local ok, ret = service:get_items("node", true);

			assert.truthy(ok);

			assert.same({

				"3",

				"2",

				["2"] = "item 2",

				["3"] = "item 3",

			}, ret);

		end);

	end);

end);