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import { addNumberReducer, FakePrefs } from "test/unit/utils";
import { createStore } from "redux";
import injector from "inject!lib/Store.jsm";
describe("Store", () => {
let Store;
let sandbox;
let store;
let dbStub;
beforeEach(() => {
sandbox = sinon.createSandbox();
function ActivityStreamMessageChannel(options) {
this.dispatch = options.dispatch;
this.createChannel = sandbox.spy();
this.destroyChannel = sandbox.spy();
this.middleware = sandbox.spy(s => next => action => next(action));
this.simulateMessagesForExistingTabs = sandbox.stub();
}
dbStub = sandbox.stub().resolves();
function FakeActivityStreamStorage() {
this.db = {};
sinon.stub(this, "db").get(dbStub);
}
({ Store } = injector({
"lib/ActivityStreamMessageChannel.jsm": { ActivityStreamMessageChannel },
"lib/ActivityStreamPrefs.jsm": { Prefs: FakePrefs },
"lib/ActivityStreamStorage.jsm": {
ActivityStreamStorage: FakeActivityStreamStorage,
},
}));
store = new Store();
sandbox.stub(store, "_initIndexedDB").resolves();
});
afterEach(() => {
sandbox.restore();
});
it("should have a .feeds property that is a Map", () => {
assert.instanceOf(store.feeds, Map);
assert.equal(store.feeds.size, 0, ".feeds.size");
});
it("should have a redux store at ._store", () => {
assert.ok(store._store);
assert.property(store, "dispatch");
assert.property(store, "getState");
});
it("should create a ActivityStreamMessageChannel with the right dispatcher", () => {
assert.ok(store._messageChannel);
assert.equal(store._messageChannel.dispatch, store.dispatch);
});
it("should connect the ActivityStreamMessageChannel's middleware", () => {
store.dispatch({ type: "FOO" });
assert.calledOnce(store._messageChannel.middleware);
});
describe("#initFeed", () => {
it("should add an instance of the feed to .feeds", () => {
class Foo {}
store._prefs.set("foo", true);
store.init(new Map([["foo", () => new Foo()]]));
store.initFeed("foo");
assert.isTrue(store.feeds.has("foo"), "foo is set");
assert.instanceOf(store.feeds.get("foo"), Foo);
});
it("should call the feed's onAction with uninit action if it exists", () => {
let feed;
function createFeed() {
feed = { onAction: sinon.spy() };
return feed;
}
const action = { type: "FOO" };
store._feedFactories = new Map([["foo", createFeed]]);
store.initFeed("foo", action);
assert.calledOnce(feed.onAction);
assert.calledWith(feed.onAction, action);
});
it("should add a .store property to the feed", () => {
class Foo {}
store._feedFactories = new Map([["foo", () => new Foo()]]);
store.initFeed("foo");
assert.propertyVal(store.feeds.get("foo"), "store", store);
});
});
describe("#uninitFeed", () => {
it("should not throw if no feed with that name exists", () => {
assert.doesNotThrow(() => {
store.uninitFeed("bar");
});
});
it("should call the feed's onAction with uninit action if it exists", () => {
let feed;
function createFeed() {
feed = { onAction: sinon.spy() };
return feed;
}
const action = { type: "BAR" };
store._feedFactories = new Map([["foo", createFeed]]);
store.initFeed("foo");
store.uninitFeed("foo", action);
assert.calledOnce(feed.onAction);
assert.calledWith(feed.onAction, action);
});
it("should remove the feed from .feeds", () => {
class Foo {}
store._feedFactories = new Map([["foo", () => new Foo()]]);
store.initFeed("foo");
store.uninitFeed("foo");
assert.isFalse(store.feeds.has("foo"), "foo is not in .feeds");
});
});
describe("onPrefChanged", () => {
beforeEach(() => {
sinon.stub(store, "initFeed");
sinon.stub(store, "uninitFeed");
store._prefs.set("foo", false);
store.init(new Map([["foo", () => ({})]]));
});
it("should initialize the feed if called with true", () => {
store.onPrefChanged("foo", true);
assert.calledWith(store.initFeed, "foo");
assert.notCalled(store.uninitFeed);
});
it("should uninitialize the feed if called with false", () => {
store.onPrefChanged("foo", false);
assert.calledWith(store.uninitFeed, "foo");
assert.notCalled(store.initFeed);
});
it("should do nothing if not an expected feed", () => {
store.onPrefChanged("bar", false);
assert.notCalled(store.initFeed);
assert.notCalled(store.uninitFeed);
});
});
describe("#init", () => {
it("should call .initFeed with each key", async () => {
sinon.stub(store, "initFeed");
store._prefs.set("foo", true);
store._prefs.set("bar", true);
await store.init(
new Map([
["foo", () => {}],
["bar", () => {}],
])
);
assert.calledWith(store.initFeed, "foo");
assert.calledWith(store.initFeed, "bar");
});
it("should call _initIndexedDB", async () => {
await store.init(new Map());
assert.calledOnce(store._initIndexedDB);
assert.calledWithExactly(store._initIndexedDB, "feeds.telemetry");
});
it("should access the db property of indexedDB", async () => {
store._initIndexedDB.restore();
await store.init(new Map());
assert.calledOnce(dbStub);
});
it("should reset ActivityStreamStorage telemetry if opening the db fails", async () => {
store._initIndexedDB.restore();
// Force an IndexedDB error
dbStub.rejects();
await store.init(new Map());
assert.calledOnce(dbStub);
assert.isNull(store.dbStorage.telemetry);
});
it("should not initialize the feed if the Pref is set to false", async () => {
sinon.stub(store, "initFeed");
store._prefs.set("foo", false);
await store.init(new Map([["foo", () => {}]]));
assert.notCalled(store.initFeed);
});
it("should observe the pref branch", async () => {
sinon.stub(store._prefs, "observeBranch");
await store.init(new Map());
assert.calledOnce(store._prefs.observeBranch);
assert.calledWith(store._prefs.observeBranch, store);
});
it("should initialize the ActivityStreamMessageChannel channel", async () => {
await store.init(new Map());
assert.calledOnce(store._messageChannel.createChannel);
});
it("should emit an initial event if provided", async () => {
sinon.stub(store, "dispatch");
const action = { type: "FOO" };
await store.init(new Map(), action);
assert.calledOnce(store.dispatch);
assert.calledWith(store.dispatch, action);
});
it("should initialize the telemtry feed first", () => {
store._prefs.set("feeds.foo", true);
store._prefs.set("feeds.telemetry", true);
const telemetrySpy = sandbox.stub().returns({});
const fooSpy = sandbox.stub().returns({});
// Intentionally put the telemetry feed as the second item.
const feedFactories = new Map([
["feeds.foo", fooSpy],
["feeds.telemetry", telemetrySpy],
]);
store.init(feedFactories);
assert.ok(telemetrySpy.calledBefore(fooSpy));
});
it("should dispatch init/load events", async () => {
await store.init(new Map(), { type: "FOO" });
assert.calledOnce(store._messageChannel.simulateMessagesForExistingTabs);
});
it("should dispatch INIT before LOAD", async () => {
const init = { type: "INIT" };
const load = { type: "TAB_LOAD" };
sandbox.stub(store, "dispatch");
store._messageChannel.simulateMessagesForExistingTabs.callsFake(() =>
store.dispatch(load)
);
await store.init(new Map(), init);
assert.calledTwice(store.dispatch);
assert.equal(store.dispatch.firstCall.args[0], init);
assert.equal(store.dispatch.secondCall.args[0], load);
});
});
describe("#uninit", () => {
it("should emit an uninit event if provided on init", () => {
sinon.stub(store, "dispatch");
const action = { type: "BAR" };
store.init(new Map(), null, action);
store.uninit();
assert.calledOnce(store.dispatch);
assert.calledWith(store.dispatch, action);
});
it("should clear .feeds and ._feedFactories", () => {
store._prefs.set("a", true);
store.init(
new Map([
["a", () => ({})],
["b", () => ({})],
["c", () => ({})],
])
);
store.uninit();
assert.equal(store.feeds.size, 0);
assert.isNull(store._feedFactories);
});
it("should destroy the ActivityStreamMessageChannel channel", () => {
store.uninit();
assert.calledOnce(store._messageChannel.destroyChannel);
});
});
describe("#getState", () => {
it("should return the redux state", () => {
store._store = createStore((prevState = 123) => prevState);
const { getState } = store;
assert.equal(getState(), 123);
});
});
describe("#dispatch", () => {
it("should call .onAction of each feed", async () => {
const { dispatch } = store;
const sub = { onAction: sinon.spy() };
const action = { type: "FOO" };
store._prefs.set("sub", true);
await store.init(new Map([["sub", () => sub]]));
dispatch(action);
assert.calledWith(sub.onAction, action);
});
it("should call the reducers", () => {
const { dispatch } = store;
store._store = createStore(addNumberReducer);
dispatch({ type: "ADD", data: 14 });
assert.equal(store.getState(), 14);
});
});
describe("#subscribe", () => {
it("should subscribe to changes to the store", () => {
const sub = sinon.spy();
const action = { type: "FOO" };
store.subscribe(sub);
store.dispatch(action);
assert.calledOnce(sub);
});
});
});
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