# Code coverage report for lib/__tests__/Flux-test.js

## Statements: 98.27% (398 / 405) Branches: 68.49% (50 / 73) Functions: 94.68% (89 / 94) Lines: 98.71% (383 / 388) Ignored: none

All files » lib/__tests__/ » Flux-test.js

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     "use strict";

    var _interopRequire = function (obj) { return obj && obj.__esModule ? obj["default"] : obj; };

    var _prototypeProperties = function (child, staticProps, instanceProps) { if (staticProps) Object.defineProperties(child, staticProps); if (instanceProps) Object.defineProperties(child.prototype, instanceProps); };

    var _inherits = function (subClass, superClass) { Iif (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); Eif (superClass) subClass.__proto__ = superClass; };

    var _classCallCheck = function (instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } };

    var _Flux = require("../Flux");

    var Flux = _Flux.Flux;
    var Store = _Flux.Store;
    var Actions = _Flux.Actions;
    var sinon = _interopRequire(require("sinon"));

    function createSerializableStore(serializedState) {
      return (function (Store) {
        function SerializableStore() {
          _classCallCheck(this, SerializableStore);

          Eif (Store != null) {
            Store.apply(this, arguments);
          }
        }

        _inherits(SerializableStore, Store);

        _prototypeProperties(SerializableStore, {
          serialize: {
            value: function serialize() {
              return serializedState;
            },
            writable: true,
            configurable: true
          },
          deserialize: {
            value: function deserialize(stateString) {
              return {
                stateString: stateString,
                deserialized: true };
            },
            writable: true,
            configurable: true
          }
        });

        return SerializableStore;
      })(Store);
    }

    describe("Flux", function () {
      describe("#createStore()", function () {
        it("throws if key already exists", function () {
          var flux = new Flux();
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          flux.createStore("ExampleStore", TestStore);
          expect(flux.createStore.bind(flux, "ExampleStore", TestStore)).to["throw"]("You've attempted to create multiple stores with key ExampleStore. " + "Keys must be unique.");
        });

        it("throws if Store is not a prototype of class", function () {
          var flux = new Flux();
          var ForgotToExtendStore = function ForgotToExtendStore() {
            _classCallCheck(this, ForgotToExtendStore);
          };

          expect(flux.createStore.bind(flux, "Flux", ForgotToExtendStore)).to["throw"]("You've attempted to create a store from the class " + "ForgotToExtendStore, which does not have the base Store class in its " + "prototype chain. Make sure you're using the `extends` keyword: " + "`class ForgotToExtendStore extends Store { ... }`");
        });

        it("registers store's handler with central dispatcher", function () {
          var ExampleStore = (function (Store) {
            function ExampleStore() {
              _classCallCheck(this, ExampleStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(ExampleStore, Store);

            return ExampleStore;
          })(Store);

          var spy1 = sinon.spy();
          var spy2 = sinon.spy();

          ExampleStore.prototype.foo = "bar";
          ExampleStore.prototype.handler = function (_payload) {
            spy1(_payload);
            spy2(this.foo);
          };

          var flux = new Flux();
          flux.createStore("ExampleStore", ExampleStore);

          var payload = "foobar";
          flux.dispatch("actionId", payload);
          expect(spy1.getCall(0).args[0].body).to.equal("foobar");
          expect(spy2.calledWith("bar")).to.be["true"];
        });

        it("returns the created store instance", function () {
          var ExampleStore = (function (Store) {
            function ExampleStore() {
              _classCallCheck(this, ExampleStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(ExampleStore, Store);

            return ExampleStore;
          })(Store);

          var flux = new Flux();
          var store = flux.createStore("ExampleStore", ExampleStore);
          expect(store).to.be.an.instanceOf(ExampleStore);
        });
      });

      describe("#getStore()", function () {
        it("retrieves store for key", function () {
          var flux = new Flux();
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          flux.createStore("ExampleStore", TestStore);
          expect(flux.getStore("ExampleStore")).to.be.an.instanceOf(Store);
          expect(flux.getStore("NonexistentStore")).to.be.undefined;
        });
      });

      describe("#createActions()", function () {
        it("throws if key already exists", function () {
          var TestActions = (function (Actions) {
            function TestActions() {
              _classCallCheck(this, TestActions);

              Eif (Actions != null) {
                Actions.apply(this, arguments);
              }
            }

            _inherits(TestActions, Actions);

            return TestActions;
          })(Actions);

          var flux = new Flux();
          flux.createActions("ExampleActions", TestActions);

          expect(flux.createActions.bind(flux, "ExampleActions", Actions)).to["throw"]("You've attempted to create multiple actions with key ExampleActions. " + "Keys must be unique.");
        });

        it("throws if Actions is not a prototype of class", function () {
          var flux = new Flux();
          var ForgotToExtendActions = function ForgotToExtendActions() {
            _classCallCheck(this, ForgotToExtendActions);
          };

          expect(flux.createActions.bind(flux, "Flux", ForgotToExtendActions)).to["throw"]("You've attempted to create actions from the class " + "ForgotToExtendActions, which does not have the base Actions class " + "in its prototype chain. Make sure you're using the `extends` " + "keyword: `class ForgotToExtendActions extends Actions { ... }`");
        });

        it("returns the created action's instance", function () {
          var TestActions = (function (Actions) {
            function TestActions() {
              _classCallCheck(this, TestActions);

              Eif (Actions != null) {
                Actions.apply(this, arguments);
              }
            }

            _inherits(TestActions, Actions);

            return TestActions;
          })(Actions);

          var flux = new Flux();
          var actions = flux.createActions("TestActions", TestActions);
          expect(actions).to.be.an.instanceOf(TestActions);
        });
      });

      describe("#getActions()", function () {
        var TestActions = (function (Actions) {
          function TestActions() {
            _classCallCheck(this, TestActions);

            Eif (Actions != null) {
              Actions.apply(this, arguments);
            }
          }

          _inherits(TestActions, Actions);

          return TestActions;
        })(Actions);

        it("retrieves actions for key", function () {
          var flux = new Flux();
          flux.createActions("TestActions", TestActions);

          expect(flux.getActions("TestActions")).to.be.an.instanceOf(Actions);
          expect(flux.getActions("NonexistentActions")).to.be.undefined;
        });
      });

      describe("#getActionIds() / #getConstants()", function () {
        var TestActions = (function (Actions) {
          function TestActions() {
            _classCallCheck(this, TestActions);

            Eif (Actions != null) {
              Actions.apply(this, arguments);
            }
          }

          _inherits(TestActions, Actions);

          _prototypeProperties(TestActions, null, {
            getFoo: {
              value: function getFoo() {},
              writable: true,
              configurable: true
            }
          });

          return TestActions;
        })(Actions);

        it("retrives ids of actions for key", function () {
          var flux = new Flux();
          flux.createActions("TestActions", TestActions);

          expect(flux.getActionIds("TestActions").getFoo).to.be.a("string");
          expect(flux.getActionIds("NonexistentActions")).to.be.undefined;

          expect(flux.getConstants("TestActions").getFoo).to.be.a("string");
          expect(flux.getConstants("NonexistentActions")).to.be.undefined;
        });
      });

      describe("#dispatch()", function () {
        it("delegates to dispatcher", function () {
          var flux = new Flux();
          var dispatch = sinon.spy();
          flux.dispatcher = { dispatch: dispatch };
          var actionId = "actionId";

          flux.dispatch(actionId, "foobar");

          expect(dispatch.firstCall.args[0]).to.deep.equal({
            actionId: actionId,
            body: "foobar" });
        });

        it("emits dispatch event", function () {
          var flux = new Flux();
          var listener = sinon.spy();

          flux.addListener("dispatch", listener);

          var actionId = "actionId";

          flux.dispatch(actionId, "foobar");

          expect(listener.calledOnce).to.be["true"];
          expect(listener.firstCall.args[0]).to.deep.equal({
            actionId: actionId,
            body: "foobar"
          });
        });
      });

      describe("#dispatchAsync()", function () {
        it("delegates to dispatcher", function callee$2$0() {
          var flux, dispatch, actionId;
          return regeneratorRuntime.async(function callee$2$0$(context$3$0) {
            while (1) switch (context$3$0.prev = context$3$0.next) {
              case 0:
                flux = new Flux();
                dispatch = sinon.spy();
                flux.dispatcher = { dispatch: dispatch };
                actionId = "actionId";
                context$3$0.next = 6;
                return flux.dispatchAsync(actionId, Promise.resolve("foobar"));
              case 6:

                expect(dispatch.callCount).to.equal(2);
                expect(dispatch.firstCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  async: "begin" });
                expect(dispatch.secondCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  body: "foobar",
                  async: "success"
                });
              case 9:
              case "end":
                return context$3$0.stop();
            }
          }, null, this);
        });

        it("emits dispatch event", function callee$2$1() {
          var flux, listener, actionId;
          return regeneratorRuntime.async(function callee$2$1$(context$3$0) {
            while (1) switch (context$3$0.prev = context$3$0.next) {
              case 0:
                flux = new Flux();
                listener = sinon.spy();

                flux.addListener("dispatch", listener);

                actionId = "actionId";
                context$3$0.next = 6;
                return flux.dispatchAsync(actionId, Promise.resolve("foobar"));
              case 6:

                expect(listener.calledTwice).to.be["true"];
                expect(listener.firstCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  async: "begin" });
                expect(listener.secondCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  async: "success",
                  body: "foobar" });
              case 9:
              case "end":
                return context$3$0.stop();
            }
          }, null, this);
        });

        it("resolves to value of given promise", function (done) {
          var flux = new Flux();
          var dispatch = sinon.spy();
          flux.dispatcher = { dispatch: dispatch };
          var actionId = "actionId";

          expect(flux.dispatchAsync(actionId, Promise.resolve("foobar"))).to.eventually.equal("foobar").notify(done);
        });

        it("rejects with error if promise rejects", function (done) {
          var flux = new Flux();
          var dispatch = sinon.spy();
          flux.dispatcher = { dispatch: dispatch };
          var actionId = "actionId";

          expect(flux.dispatchAsync(actionId, Promise.reject(new Error("error")))).to.be.rejectedWith("error").notify(done);
        });

        it("dispatches with error if promise rejects", function callee$2$2() {
          var flux, dispatch, actionId, error;
          return regeneratorRuntime.async(function callee$2$2$(context$3$0) {
            while (1) switch (context$3$0.prev = context$3$0.next) {
              case 0:
                flux = new Flux();
                dispatch = sinon.spy();
                flux.dispatcher = { dispatch: dispatch };
                actionId = "actionId";
                error = new Error("error");
                context$3$0.next = 7;
                return expect(flux.dispatchAsync(actionId, Promise.reject(error))).to.be.rejected;
              case 7:

                expect(dispatch.callCount).to.equal(2);
                expect(dispatch.firstCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  async: "begin" });
                expect(dispatch.secondCall.args[0]).to.deep.equal({
                  actionId: actionId,
                  error: error,
                  async: "failure"
                });
              case 10:
              case "end":
                return context$3$0.stop();
            }
          }, null, this);
        });

        it("emits error if promise rejects", function callee$2$3() {
          var ExampleStore, flux, listener, actionId;
          return regeneratorRuntime.async(function callee$2$3$(context$3$0) {
            while (1) switch (context$3$0.prev = context$3$0.next) {
              case 0:
                ExampleStore = (function (Store) {
                  function ExampleStore() {
                    _classCallCheck(this, ExampleStore);

                    if (Store != null) {
                      Store.apply(this, arguments);
                    }
                  }

                  _inherits(ExampleStore, Store);

                  return ExampleStore;
                })(Store);
                flux = new Flux();
                listener = sinon.spy();
                flux.addListener("error", listener);

                actionId = "actionId";
                context$3$0.next = 7;
                return expect(flux.dispatchAsync(actionId, Promise.reject(new Error("foobar")))).to.be.rejectedWith("foobar");
              case 7:

                expect(listener.calledOnce).to.be["true"];
                expect(listener.firstCall.args[0].message).to.equal("foobar");
              case 9:
              case "end":
                return context$3$0.stop();
            }
          }, null, this);
        });

        it("emit errors that occur as result of dispatch", function callee$2$4() {
          var ExampleStore, flux, listener, actionId, store;
          return regeneratorRuntime.async(function callee$2$4$(context$3$0) {
            while (1) switch (context$3$0.prev = context$3$0.next) {
              case 0:
                ExampleStore = (function (Store) {
                  function ExampleStore() {
                    _classCallCheck(this, ExampleStore);

                    Eif (Store != null) {
                      Store.apply(this, arguments);
                    }
                  }

                  _inherits(ExampleStore, Store);

                  return ExampleStore;
                })(Store);
                flux = new Flux();
                listener = sinon.spy();
                flux.addListener("error", listener);

                actionId = "actionId";
                store = flux.createStore("example", ExampleStore);

                store.registerAsync(actionId, null, function () {
                  throw new Error("success error");
                }, function () {
                  throw new Error("failure error");
                });

                context$3$0.next = 9;
                return expect(flux.dispatchAsync(actionId, Promise.resolve("foobar"))).to.be.rejectedWith("success error");
              case 9:
                expect(listener.calledOnce).to.be["true"];
                expect(listener.firstCall.args[0].message).to.equal("success error");

                context$3$0.next = 13;
                return expect(flux.dispatchAsync(actionId, Promise.reject(new Error("foobar")))).to.be.rejectedWith("failure error");
              case 13:
                expect(listener.calledTwice).to.be["true"];
                expect(listener.secondCall.args[0].message).to.equal("failure error");
              case 15:
              case "end":
                return context$3$0.stop();
            }
          }, null, this);
        });
      });

      describe("#removeAllStoreListeners", function () {
        it("removes all listeners from stores", function () {
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          var flux = new Flux();
          var storeA = flux.createStore("storeA", TestStore);
          var storeB = flux.createStore("storeB", TestStore);

          var listener = function () {};

          storeA.addListener("change", listener);
          storeA.addListener("change", listener);
          storeB.addListener("change", listener);
          storeB.addListener("change", listener);

          expect(storeA.listeners("change").length).to.equal(2);
          expect(storeB.listeners("change").length).to.equal(2);

          flux.removeAllStoreListeners();

          expect(storeA.listeners("change").length).to.equal(0);
          expect(storeB.listeners("change").length).to.equal(0);
        });
      });

      describe("#serialize()", function () {
        it("returns state of all the stores as a JSON string", function () {
          var flux = new Flux();

          flux.createStore("foo", createSerializableStore("foo state"));
          flux.createStore("bar", createSerializableStore("bar state"));
          flux.createStore("baz", createSerializableStore("baz state"));

          expect(JSON.parse(flux.serialize())).to.deep.equal({
            foo: "foo state",
            bar: "bar state",
            baz: "baz state" });
        });

        it("ignores stores whose classes do not implement .serialize()", function () {
          var flux = new Flux();
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          flux.createStore("foo", createSerializableStore("foo state"));
          flux.createStore("bar", createSerializableStore("bar state"));
          flux.createStore("baz", TestStore);

          expect(JSON.parse(flux.serialize())).to.deep.equal({
            foo: "foo state",
            bar: "bar state" });
        });

        it("warns if any store classes .serialize() returns a non-string", function () {
          var flux = new Flux();
          var warn = sinon.spy(console, "warn");

          flux.createStore("foo", createSerializableStore({}));
          flux.serialize();

          expect(warn.firstCall.args[0]).to.equal("The store with key 'foo' was not serialized because the static " + "method `SerializableStore.serialize()` returned a non-string with " + "type 'object'.");

          console.warn.restore();
        });

        it("warns and skips stores whose classes do not implement .deserialize()", function () {
          var flux = new Flux();
          var warn = sinon.spy(console, "warn");

          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            _prototypeProperties(TestStore, {
              serialize: {
                value: function serialize() {
                  return "state string";
                },
                writable: true,
                configurable: true
              }
            });

            return TestStore;
          })(Store);

          flux.createStore("test", TestStore);
          flux.serialize();

          expect(warn.firstCall.args[0]).to.equal("The class `TestStore` has a `serialize()` method, but no " + "corresponding `deserialize()` method.");

          console.warn.restore();
        });
      });

      describe("#deserialize()", function () {
        it("converts a serialized string into state and uses it to replace state of stores", function () {
          var flux = new Flux();

          flux.createStore("foo", createSerializableStore());
          flux.createStore("bar", createSerializableStore());
          flux.createStore("baz", createSerializableStore());

          flux.deserialize("{\n        \"foo\": \"foo state\",\n        \"bar\": \"bar state\",\n        \"baz\": \"baz state\"\n      }");

          var fooStore = flux.getStore("foo");
          var barStore = flux.getStore("bar");
          var bazStore = flux.getStore("baz");

          expect(fooStore.state.stateString).to.equal("foo state");
          expect(fooStore.state.deserialized).to.be["true"];
          expect(barStore.state.stateString).to.equal("bar state");
          expect(barStore.state.deserialized).to.be["true"];
          expect(bazStore.state.stateString).to.equal("baz state");
          expect(bazStore.state.deserialized).to.be["true"];
        });

        it("warns and skips if passed string is invalid JSON", function () {
          var flux = new Flux();
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          flux.createStore("foo", TestStore);

          expect(flux.deserialize.bind(flux, "not JSON")).to["throw"]("Invalid value passed to `Flux#deserialize()`: not JSON");
        });

        it("warns and skips stores whose classes do not implement .serialize()", function () {
          var flux = new Flux();
          var warn = sinon.spy(console, "warn");

          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            _prototypeProperties(TestStore, {
              deserialize: {
                value: function deserialize() {
                  return {};
                },
                writable: true,
                configurable: true
              }
            });

            return TestStore;
          })(Store);

          flux.createStore("test", TestStore);
          flux.deserialize("{\"test\": \"test state\"}");

          expect(warn.firstCall.args[0]).to.equal("The class `TestStore` has a `deserialize()` method, but no " + "corresponding `serialize()` method.");

          console.warn.restore();
        });

        it("ignores stores whose classes do not implement .deserialize()", function () {
          var flux = new Flux();
          var TestStore = (function (Store) {
            function TestStore() {
              _classCallCheck(this, TestStore);

              Eif (Store != null) {
                Store.apply(this, arguments);
              }
            }

            _inherits(TestStore, Store);

            return TestStore;
          })(Store);

          flux.createStore("foo", createSerializableStore());
          flux.createStore("bar", createSerializableStore());
          flux.createStore("baz", TestStore);

          flux.deserialize("{\n        \"foo\": \"foo state\",\n        \"bar\": \"bar state\",\n        \"baz\": \"baz state\"\n      }");

          var fooStore = flux.getStore("foo");
          var barStore = flux.getStore("bar");
          var bazStore = flux.getStore("baz");

          expect(fooStore.state.stateString).to.equal("foo state");
          expect(fooStore.state.deserialized).to.be["true"];
          expect(barStore.state.stateString).to.equal("bar state");
          expect(barStore.state.deserialized).to.be["true"];
          expect(bazStore.state).to.be["null"];
        });
      });
    });

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