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-rw-r--r--spec/util_pubsub_spec.lua350
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diff --git a/spec/util_pubsub_spec.lua b/spec/util_pubsub_spec.lua
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+local pubsub;
+setup(function ()
+ pubsub = require "util.pubsub";
+end);
+
+--[[TODO:
+ Retract
+ Purge
+ auto-create/auto-subscribe
+ Item store/node store
+ resize on max_items change
+ service creation config provides alternative node_defaults
+ get subscriptions
+]]
+
+describe("util.pubsub", function ()
+ describe("simple node creation and deletion", function ()
+ randomize(false); -- These tests are ordered
+
+ -- Roughly a port of scansion/scripts/pubsub_createdelete.scs
+ local service = pubsub.new();
+
+ describe("#create", function ()
+ randomize(false); -- These tests are ordered
+ 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 ()
+ randomize(false); -- These tests are ordered
+ 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 ()
+ randomize(false); -- These tests are ordered
+
+ local notified;
+ local broadcaster = spy.new(function (notif_type, node_name, subscribers, item) -- luacheck: ignore 212
+ notified = subscribers;
+ 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"));
+ assert.truthy(notified["someone"]);
+ 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);
+
+ it("lets someone unsubscribe", function ()
+ assert.truthy(service:remove_subscription("node", true, "someone"));
+ end);
+
+ it("does not send notifications after subscription is removed", function ()
+ assert.truthy(service:publish("node", true, "1", "item 1"));
+ assert.is_nil(notified["someone"]);
+ end);
+ end);
+
+ describe("#issue1082", function ()
+ randomize(false); -- These tests are ordered
+
+ 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);
+
+ describe("node config", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ service:create("test", true);
+ end);
+ it("access is forbidden for unaffiliated entities", function ()
+ local ok, err = service:get_node_config("test", "stranger");
+ assert.is_falsy(ok);
+ assert.equals("forbidden", err);
+ end);
+ it("returns an error for nodes that do not exist", function ()
+ local ok, err = service:get_node_config("nonexistent", true);
+ assert.is_falsy(ok);
+ assert.equals("item-not-found", err);
+ end);
+ end);
+
+ describe("access model", function ()
+ describe("open", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ -- Do not supply any config, 'open' should be default
+ service:create("test", true);
+ end);
+ it("should be the default", function ()
+ local ok, config = service:get_node_config("test", true);
+ assert.equal("open", config.access_model);
+ end);
+ it("should allow anyone to subscribe", function ()
+ local ok = service:add_subscription("test", "stranger", "stranger");
+ assert.is_true(ok);
+ end);
+ it("should still reject outcast-affiliated entities", function ()
+ assert(service:set_affiliation("test", true, "enemy", "outcast"));
+ local ok, err = service:add_subscription("test", "enemy", "enemy");
+ assert.is_falsy(ok);
+ assert.equal("forbidden", err);
+ end);
+ end);
+ describe("whitelist", function ()
+ local service;
+ before_each(function ()
+ service = assert(pubsub.new());
+ assert.is_true(service:create("test", true, { access_model = "whitelist" }));
+ end);
+ it("should be present in the configuration", function ()
+ local ok, config = service:get_node_config("test", true);
+ assert.equal("whitelist", config.access_model);
+ end);
+ it("should not allow anyone to subscribe", function ()
+ local ok, err = service:add_subscription("test", "stranger", "stranger");
+ assert.is_false(ok);
+ assert.equals("forbidden", err);
+ end);
+ end);
+ describe("change", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ service:create("test", true, { access_model = "open" });
+ end);
+ it("affects existing subscriptions", function ()
+ do
+ local ok = service:add_subscription("test", "stranger", "stranger");
+ assert.is_true(ok);
+ end
+ do
+ local ok, sub = service:get_subscription("test", "stranger", "stranger");
+ assert.is_true(ok);
+ assert.is_true(sub);
+ end
+ assert(service:set_node_config("test", true, { access_model = "whitelist" }));
+ do
+ local ok, sub = service:get_subscription("test", "stranger", "stranger");
+ assert.is_true(ok);
+ assert.is_nil(sub);
+ end
+ end);
+ end);
+ end);
+
+ describe("publish model", function ()
+ describe("publishers", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ -- Do not supply any config, 'publishers' should be default
+ service:create("test", true);
+ end);
+ it("should be the default", function ()
+ local ok, config = service:get_node_config("test", true);
+ assert.equal("publishers", config.publish_model);
+ end);
+ it("should not allow anyone to publish", function ()
+ assert.is_true(service:add_subscription("test", "stranger", "stranger"));
+ local ok, err = service:publish("test", "stranger", "item1", "foo");
+ assert.is_falsy(ok);
+ assert.equals("forbidden", err);
+ end);
+ it("should allow publishers to publish", function ()
+ assert(service:set_affiliation("test", true, "mypublisher", "publisher"));
+ local ok, err = service:publish("test", "mypublisher", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ it("should allow owners to publish", function ()
+ assert(service:set_affiliation("test", true, "myowner", "owner"));
+ local ok = service:publish("test", "myowner", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ end);
+ describe("open", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ service:create("test", true, { publish_model = "open" });
+ end);
+ it("should allow anyone to publish", function ()
+ local ok = service:publish("test", "stranger", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ end);
+ describe("subscribers", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ service:create("test", true, { publish_model = "subscribers" });
+ end);
+ it("should not allow non-subscribers to publish", function ()
+ local ok, err = service:publish("test", "stranger", "item1", "foo");
+ assert.is_falsy(ok);
+ assert.equals("forbidden", err);
+ end);
+ it("should allow subscribers to publish without an affiliation", function ()
+ assert.is_true(service:add_subscription("test", "stranger", "stranger"));
+ local ok = service:publish("test", "stranger", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ it("should allow publishers to publish without a subscription", function ()
+ assert(service:set_affiliation("test", true, "mypublisher", "publisher"));
+ local ok, err = service:publish("test", "mypublisher", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ it("should allow owners to publish without a subscription", function ()
+ assert(service:set_affiliation("test", true, "myowner", "owner"));
+ local ok = service:publish("test", "myowner", "item1", "foo");
+ assert.is_true(ok);
+ end);
+ end);
+ end);
+
+ describe("item API", function ()
+ local service;
+ before_each(function ()
+ service = pubsub.new();
+ service:create("test", true, { publish_model = "subscribers" });
+ end);
+ describe("get_last_item()", function ()
+ it("succeeds with nil on empty nodes", function ()
+ local ok, id, item = service:get_last_item("test", true);
+ assert.is_true(ok);
+ assert.is_nil(id);
+ assert.is_nil(item);
+ end);
+ it("succeeds and returns the last item", function ()
+ service:publish("test", true, "one", "hello world");
+ service:publish("test", true, "two", "hello again");
+ service:publish("test", true, "three", "hey");
+ service:publish("test", true, "one", "bye");
+ local ok, id, item = service:get_last_item("test", true);
+ assert.is_true(ok);
+ assert.equal("one", id);
+ assert.equal("bye", item);
+ end);
+ end);
+ describe("get_items()", function ()
+ it("fails on non-existent nodes", function ()
+ local ok, err = service:get_items("no-node", true);
+ assert.is_falsy(ok);
+ assert.equal("item-not-found", err);
+ end);
+ it("returns no items on an empty node", function ()
+ local ok, items = service:get_items("test", true);
+ assert.is_true(ok);
+ assert.equal(0, #items);
+ assert.is_nil(next(items));
+ end);
+ it("returns no items on an empty node", function ()
+ local ok, items = service:get_items("test", true);
+ assert.is_true(ok);
+ assert.equal(0, #items);
+ assert.is_nil((next(items)));
+ end);
+ it("returns all published items", function ()
+ service:publish("test", true, "one", "hello world");
+ service:publish("test", true, "two", "hello again");
+ service:publish("test", true, "three", "hey");
+ service:publish("test", true, "one", "bye");
+ local ok, items = service:get_items("test", true);
+ assert.is_true(ok);
+ assert.same({ "one", "three", "two", two = "hello again", three = "hey", one = "bye" }, items);
+ end);
+ end);
+ end);
+end);
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