/
typescript-tests.ts
793 lines (634 loc) · 17 KB
/
typescript-tests.ts
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/// <reference path='require.d.ts' />
/// <reference path='tape.d.ts' />
import {
observe, computed, observable, asStructure, autorun, autorunAsync, extendObservable, action,
IObservableArray, IArrayChange, IArraySplice, IObservableValue, isObservable, isObservableObject,
extras, Atom, transaction, IObjectChange, spy, useStrict
} from "../lib/mobx";
import * as test from 'tape';
import * as mobx from "../lib/mobx";
var v = observable(3);
observe(v, () => {});
var a = observable([1,2,3]);
var testFunction = function(a:any) {};
class Order {
@observable price:number = 3;
@observable amount:number = 2;
@observable orders:string[] = [];
@observable aFunction = testFunction;
@observable someStruct = asStructure({ x: 1, y: 2});
@computed get total() {
return this.amount * this.price * (1 + this.orders.length);
}
// Typescript classes cannot be defined inside functions,
// but if the next line is enabled it should throw...
// @observable hoepie() { return 3; }
}
test('decorators', function(t) {
var o = new Order();
t.equal(isObservableObject(o), true);
t.equal(isObservable(o, 'amount'), true);
t.equal(isObservable(o, 'total'), true);
var events: any[] = [];
var d1 = observe(o, (ev: IObjectChange) => events.push(ev.name, ev.oldValue));
var d2 = observe(o, 'price', (newValue, oldValue) => events.push(newValue, oldValue));
var d3 = observe(o, 'total', (newValue, oldValue) => events.push(newValue, oldValue));
o.price = 4;
d1();
d2();
d3();
o.price = 5;
t.deepEqual(events, [
8, // new total
6, // old total
4, // new price
3, // old price
"price", // event name
3, // event oldValue
]);
t.end();
})
test('observable', function(t) {
var a = observable(3);
var b = observable(() => a.get() * 2);
t.equal(b.get(), 6);
t.end();
})
test('annotations', function(t) {
var order1totals:number[] = [];
var order1 = new Order();
var order2 = new Order();
var disposer = autorun(() => {
order1totals.push(order1.total)
});
order2.price = 4;
order1.amount = 1;
t.equal(order1.price, 3);
t.equal(order1.total, 3);
t.equal(order2.total, 8);
order2.orders.push('bla');
t.equal(order2.total, 16);
order1.orders.splice(0,0,'boe', 'hoi');
t.deepEqual(order1totals, [6,3,9]);
disposer();
order1.orders.pop();
t.equal(order1.total, 6);
t.deepEqual(order1totals, [6,3,9]);
t.equal(order1.aFunction, testFunction);
var x = function() { return 3; };
order1.aFunction = x;
t.equal(order1.aFunction, x);
var coords:{x:number, y:number} = null;
var coordsCalcs = 0;
var disposer2 = autorun(() => {
coordsCalcs++;
coords = { x : order1.someStruct.x, y: order1.someStruct.y };
});
t.equal(coordsCalcs, 1);
t.deepEqual(coords, { x: 1, y: 2});
order1.someStruct.x = 1;
order1.someStruct = { x: 1, y: 2};
t.equal(coordsCalcs, 1);
t.deepEqual(coords, { x: 1, y: 2});
order1.someStruct.x = 2;
t.deepEqual(coords, { x: 2, y: 2 });
t.equal(coordsCalcs, 2);
order1.someStruct = { x: 3, y: 3 };
t.equal(coordsCalcs, 3);
t.deepEqual(coords, { x: 3, y: 3 });
t.end();
})
test('scope', function(t) {
var x = observable({
y: 3,
// this wo't work here.
z: () => 2 * x.y
});
t.equal(x.z, 6);
x.y = 4;
t.equal(x.z, 8);
interface IThing {
z: number;
y: number;
}
const Thing = function() {
extendObservable(this, {
y: 3,
// this will work here
z: () => 2 * this.y
});
}
var x3: IThing = new (<any>Thing)();
t.equal(x3.z, 6);
x3.y = 4;
t.equal(x3.z, 8);
t.end();
})
test('typing', function(t) {
var ar:IObservableArray<number> = observable([1,2]);
ar.observe((d:IArrayChange<number>|IArraySplice<number>) => {
console.log(d.type);
});
var ar2:IObservableArray<number> = observable([1,2]);
ar2.observe((d:IArrayChange<number>|IArraySplice<number>) => {
console.log(d.type);
});
var x:IObservableValue<number> = observable(3);
var d2 = autorunAsync(function() {
});
t.end();
})
const state:any = observable({
authToken: null
});
test('issue8', function(t){
t.throws(() => {
class LoginStoreTest {
loggedIn2: boolean;
constructor() {
extendObservable(this, {
loggedIn2: () => !!state.authToken
});
}
@observable get loggedIn() {
return !!state.authToken;
}
}
const store = new LoginStoreTest();
}, /@computed/);
t.end();
})
class Box {
@observable uninitialized:any;
@observable height = 20;
@observable sizes = [2];
@observable someFunc = function () { return 2; }
@computed get width() {
return this.height * this.sizes.length * this.someFunc() * (this.uninitialized ? 2 : 1);
}
}
test('box', function(t) {
var box = new Box();
var ar:number[] = []
autorun(() => {
ar.push(box.width);
});
t.deepEqual(ar.slice(), [40]);
box.height = 10;
t.deepEqual(ar.slice(), [40, 20]);
box.sizes.push(3, 4);
t.deepEqual(ar.slice(), [40, 20, 60]);
box.someFunc = () => 7;
t.deepEqual(ar.slice(), [40, 20, 60, 210]);
box.uninitialized = true;
t.deepEqual(ar.slice(), [40, 20, 60, 210, 420]);
t.end();
})
test('observable setter should fail', function(t) {
t.throws(() => {
class Bla {
@computed get propX() {
return 3;
}
set propX(v) {
}
}
}, 'propX');
t.end();
});
test('atom clock example', function(t) {
let ticks = 0;
const time_factor = 50; // speed up / slow down tests
class Clock {
atom: Atom;
intervalHandler: number = null;
currentDateTime: string;
constructor() {
console.log("create");
// creates an atom to interact with the mobx core algorithm
this.atom = new Atom(
// first param a name for this atom, for debugging purposes
"Clock",
// second (optional) parameter: callback for when this atom transitions from unobserved to observed.
() => this.startTicking(),
// third (optional) parameter: callback for when this atom transitions from observed to unobserved
// note that the same atom transition multiple times between these two states
() => this.stopTicking()
);
}
getTime() {
console.log("get time");
// let mobx now this observable data source has been used
this.atom.reportObserved();
if (!this.intervalHandler)
this.tick(); // get the initial data
return this.currentDateTime;
}
tick() {
console.log("tick");
ticks++;
this.currentDateTime = new Date().toString();
this.atom.reportChanged();
}
startTicking() {
console.log("start ticking");
this.intervalHandler = setInterval(() => this.tick(), 1 * time_factor);
}
stopTicking() {
console.log("stop ticking");
clearInterval(this.intervalHandler);
this.intervalHandler = null;
}
}
const clock = new Clock();
const values: string[] = [];
// ... prints the time each second
const disposer = autorun(() => {
values.push(clock.getTime());
console.log(clock.getTime());
});
// printing stops. If nobody else uses the same `clock` the clock will stop ticking as well.
setTimeout(disposer, 4.5 * time_factor);
setTimeout(() => {
t.equal(ticks, 6);
t.equal(values.length, 5);
t.equal(values.filter(x => x.length > 0).length, 5);
t.end();
}, 10 * time_factor);
});
test('typescript: parameterized computed decorator', (t) => {
class TestClass {
@observable x = 3;
@observable y = 3;
@computed({ asStructure: true }) get boxedSum() {
return { sum: Math.round(this.x) + Math.round(this.y) };
}
}
const t1 = new TestClass();
const changes: { sum: number}[] = [];
const d = autorun(() => changes.push(t1.boxedSum));
t1.y = 4; // change
t.equal(changes.length, 2);
t1.y = 4.2; // no change
t.equal(changes.length, 2);
transaction(() => {
t1.y = 3;
t1.x = 4;
}); // no change
t.equal(changes.length, 2);
t1.x = 6; // change
t.equal(changes.length, 3);
d();
t.deepEqual(changes, [{ sum: 6 }, { sum: 7 }, { sum: 9 }]);
t.end();
});
test('issue 165', function(t) {
function report<T>(msg: string, value: T) {
console.log(msg, ':', value);
return value;
}
class Card {
constructor(public game: Game, public id: number) {
}
@computed get isWrong() {
return report('Computing isWrong for card ' + this.id, this.isSelected && this.game.isMatchWrong);
}
@computed get isSelected() {
return report('Computing isSelected for card'+ this.id,
this.game.firstCardSelected === this || this.game.secondCardSelected === this);
}
}
class Game {
@observable firstCardSelected: Card = null;
@observable secondCardSelected: Card = null;
@computed get isMatchWrong() {
return report('Computing isMatchWrong',
this.secondCardSelected !== null && this.firstCardSelected.id !== this.secondCardSelected.id);
}
}
let game = new Game();
let card1 = new Card(game, 1), card2 = new Card(game, 2);
autorun(() => {
console.log('card1.isWrong =', card1.isWrong);
console.log('card2.isWrong =', card2.isWrong);
console.log('------------------------------');
});
console.log('Selecting first card');
game.firstCardSelected = card1;
console.log('Selecting second card');
game.secondCardSelected = card2;
t.equal(card1.isWrong, true);
t.equal(card2.isWrong, true);
t.end();
});
test('issue 191 - shared initializers (ts)', function(t) {
class Test {
@observable obj = { a: 1 };
@observable array = [2];
}
var t1 = new Test();
t1.obj.a = 2;
t1.array.push(3);
var t2 = new Test();
t2.obj.a = 3;
t2.array.push(4);
t.notEqual(t1.obj, t2.obj);
t.notEqual(t1.array, t2.array);
t.equal(t1.obj.a, 2);
t.equal(t2.obj.a, 3);
t.deepEqual(t1.array.slice(), [2,3]);
t.deepEqual(t2.array.slice(), [2,4]);
t.end();
});
function normalizeSpyEvents(events: any[]) {
events.forEach(ev => {
delete ev.fn;
delete ev.time;
});
return events;
}
test("action decorator (typescript)", function(t) {
class Store {
constructor(private multiplier: number) {}
@action
add(a: number, b: number): number {
return (a + b) * this.multiplier;
}
}
const store1 = new Store(2);
const store2 = new Store(3);
const events: any[] = [];
const d = spy(events.push.bind(events));
t.equal(store1.add(3, 4), 14);
t.equal(store2.add(2, 2), 12);
t.equal(store1.add(1, 1), 4);
t.deepEqual(normalizeSpyEvents(events), [
{ arguments: [ 3, 4 ], name: "add", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 2, 2 ], name: "add", spyReportStart: true, target: store2, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 1, 1 ], name: "add", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true }
]);
d();
t.end();
});
test("custom action decorator (typescript)", function(t) {
class Store {
constructor(private multiplier: number) {}
@action("zoem zoem")
add(a: number, b: number): number {
return (a + b) * this.multiplier;
}
}
const store1 = new Store(2);
const store2 = new Store(3);
const events: any[] = [];
const d = spy(events.push.bind(events));
t.equal(store1.add(3, 4), 14);
t.equal(store2.add(2, 2), 12);
t.equal(store1.add(1, 1), 4);
t.deepEqual(normalizeSpyEvents(events), [
{ arguments: [ 3, 4 ], name: "zoem zoem", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 2, 2 ], name: "zoem zoem", spyReportStart: true, target: store2, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 1, 1 ], name: "zoem zoem", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true }
]);
d();
t.end();
});
test("action decorator on field (typescript)", function(t) {
class Store {
constructor(private multiplier: number) {}
@action
add = (a: number, b: number) => {
return (a + b) * this.multiplier;
};
}
const store1 = new Store(2);
const store2 = new Store(7);
const events: any[] = [];
const d = spy(events.push.bind(events));
t.equal(store1.add(3, 4), 14);
t.equal(store2.add(4, 5), 63);
t.equal(store1.add(2, 2), 8);
t.deepEqual(normalizeSpyEvents(events), [
{ arguments: [ 3, 4 ], name: "add", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 4, 5 ], name: "add", spyReportStart: true, target: store2, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 2, 2 ], name: "add", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true }
]);
d();
t.end();
});
test("custom action decorator on field (typescript)", function(t) {
class Store {
constructor(private multiplier: number) {}
@action("zoem zoem")
add = (a: number, b: number) => {
return (a + b) * this.multiplier;
};
}
const store1 = new Store(2);
const store2 = new Store(7);
const events: any[] = [];
const d = spy(events.push.bind(events));
t.equal(store1.add(3, 4), 14);
t.equal(store2.add(4, 5), 63);
t.equal(store1.add(2, 2), 8);
t.deepEqual(normalizeSpyEvents(events), [
{ arguments: [ 3, 4 ], name: "zoem zoem", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 4, 5 ], name: "zoem zoem", spyReportStart: true, target: store2, type: "action" },
{ spyReportEnd: true },
{ arguments: [ 2, 2 ], name: "zoem zoem", spyReportStart: true, target: store1, type: "action" },
{ spyReportEnd: true }
]);
d();
t.end();
});
test("267 (typescript) should be possible to declare properties observable outside strict mode", t => {
useStrict(true);
class Store {
@observable timer: number;
}
useStrict(false);
t.end();
});
test("288 atom not detected for object property", t => {
class Store {
@observable foo = '';
}
const store = new Store();
mobx.observe(store, 'foo', () => {
console.log('Change observed');
}, true);
t.end()
})
test("observable performance", t => {
const AMOUNT = 100000;
class A {
@observable a = 1;
@observable b = 2;
@observable c = 3;
@computed get d() {
return this.a + this.b + this.c;
}
}
const objs: any[] = [];
const start = Date.now();
for (var i = 0; i < AMOUNT; i++)
objs.push(new A());
console.log("created in ", Date.now() - start);
for (var j = 0; j < 4; j++) {
for (var i = 0; i < AMOUNT; i++) {
const obj = objs[i]
obj.a += 3;
obj.b *= 4;
obj.c = obj.b - obj.a;
obj.d;
}
}
console.log("changed in ", Date.now() - start);
t.end();
})
test("unbound methods", t => {
class A {
// shared across all instances
@action m1() {
}
// per instance
@action m2 = () => {};
}
const a1 = new A();
const a2 = new A();
t.equal(a1.m1, a2.m1);
t.notEqual(a1.m2, a2.m2);
t.equal(a1.hasOwnProperty("m1"), false);
t.equal(a1.hasOwnProperty("m2"), true);
t.equal(a2.hasOwnProperty("m1"), false);
t.equal(a2.hasOwnProperty("m2"), true);
t.end();
})
test("inheritance", t => {
class A {
@observable a = 2;
}
class B extends A {
@observable b = 3;
@computed get c() {
return this.a + this.b;
}
}
const b1 = new B();
const b2 = new B();
const values: any[] = []
mobx.autorun(() => values.push(b1.c + b2.c));
b1.a = 3;
b1.b = 4;
b2.b = 5;
b2.a = 6;
t.deepEqual(values, [
10,
11,
12,
14,
18
])
t.end();
})
test("inheritance overrides observable", t => {
class A {
@observable a = 2;
}
class B {
@observable a = 5;
@observable b = 3;
@computed get c() {
return this.a + this.b;
}
}
const b1 = new B();
const b2 = new B();
const values: any[] = []
mobx.autorun(() => values.push(b1.c + b2.c));
b1.a = 3;
b1.b = 4;
b2.b = 5;
b2.a = 6;
t.deepEqual(values, [
16,
14,
15,
17,
18
])
t.end();
})
test("reusing initializers", t => {
class A {
@observable a = 3;
@observable b = this.a + 2;
@computed get c() {
return this.a + this.b;
}
@computed get d() {
return this.c + 1;
}
}
const a = new A();
const values: any[] = [];
mobx.autorun(() => values.push(a.d));
a.a = 4;
t.deepEqual(values, [
9,
10
])
t.end();
})
test("enumerability", t => {
class A {
@observable a = 1; // enumerable, on proto
@computed get b () { return this.a } // non-enumerable, on proto
@action m() {} // non-enumerable, on proto
@action m2 = () => {}; // non-enumerable, on self
}
const a = new A();
// not initialized yet
let ownProps = Object.keys(a);
let props: string[] = [];
for (var key in a)
props.push(key);
t.deepEqual(ownProps, [
]);
t.deepEqual(props, [ // also 'a' would be ok
"a"
]);
t.equal(a.hasOwnProperty("a"), false); // true would be ok as well
t.equal(a.hasOwnProperty("b"), false);
t.equal(a.hasOwnProperty("m"), false);
t.equal(a.hasOwnProperty("m2"), true); // false would be ok as well
// after initialization
a.a;
a.b;
a.m;
a.m2;
ownProps = Object.keys(a);
props = [];
for (var key in a)
props.push(key);
t.deepEqual(ownProps, [ // also 'a' would be ok
]);
t.deepEqual(props, [
"a"
]);
t.equal(a.hasOwnProperty("a"), false); // true would be ok as well
t.equal(a.hasOwnProperty("b"), false);
t.equal(a.hasOwnProperty("m"), false);
t.equal(a.hasOwnProperty("m2"), true);
t.end();
})