128 lines
3.5 KiB
TypeScript
128 lines
3.5 KiB
TypeScript
import { sequentialize } from "jslib-common/misc/sequentialize";
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describe("sequentialize decorator", () => {
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it("should call the function once", async () => {
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const foo = new Foo();
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const promises = [];
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for (let i = 0; i < 10; i++) {
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promises.push(foo.bar(1));
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}
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await Promise.all(promises);
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expect(foo.calls).toBe(1);
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});
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it("should call the function once for each instance of the object", async () => {
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const foo = new Foo();
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const foo2 = new Foo();
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const promises = [];
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for (let i = 0; i < 10; i++) {
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promises.push(foo.bar(1));
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promises.push(foo2.bar(1));
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}
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await Promise.all(promises);
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expect(foo.calls).toBe(1);
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expect(foo2.calls).toBe(1);
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});
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it("should call the function once with key function", async () => {
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const foo = new Foo();
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const promises = [];
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for (let i = 0; i < 10; i++) {
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promises.push(foo.baz(1));
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}
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await Promise.all(promises);
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expect(foo.calls).toBe(1);
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});
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it("should call the function again when already resolved", async () => {
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const foo = new Foo();
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await foo.bar(1);
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expect(foo.calls).toBe(1);
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await foo.bar(1);
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expect(foo.calls).toBe(2);
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});
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it("should call the function again when already resolved with a key function", async () => {
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const foo = new Foo();
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await foo.baz(1);
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expect(foo.calls).toBe(1);
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await foo.baz(1);
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expect(foo.calls).toBe(2);
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});
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it("should call the function for each argument", async () => {
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const foo = new Foo();
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await Promise.all([foo.bar(1), foo.bar(1), foo.bar(2), foo.bar(2), foo.bar(3), foo.bar(3)]);
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expect(foo.calls).toBe(3);
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});
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it("should call the function for each argument with key function", async () => {
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const foo = new Foo();
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await Promise.all([foo.baz(1), foo.baz(1), foo.baz(2), foo.baz(2), foo.baz(3), foo.baz(3)]);
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expect(foo.calls).toBe(3);
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});
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it("should return correct result for each call", async () => {
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const foo = new Foo();
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const allRes: number[] = [];
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await Promise.all([
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foo.bar(1).then((res) => allRes.push(res)),
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foo.bar(1).then((res) => allRes.push(res)),
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foo.bar(2).then((res) => allRes.push(res)),
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foo.bar(2).then((res) => allRes.push(res)),
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foo.bar(3).then((res) => allRes.push(res)),
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foo.bar(3).then((res) => allRes.push(res)),
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]);
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expect(foo.calls).toBe(3);
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expect(allRes.length).toBe(6);
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allRes.sort();
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expect(allRes).toEqual([2, 2, 4, 4, 6, 6]);
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});
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it("should return correct result for each call with key function", async () => {
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const foo = new Foo();
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const allRes: number[] = [];
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await Promise.all([
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foo.baz(1).then((res) => allRes.push(res)),
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foo.baz(1).then((res) => allRes.push(res)),
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foo.baz(2).then((res) => allRes.push(res)),
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foo.baz(2).then((res) => allRes.push(res)),
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foo.baz(3).then((res) => allRes.push(res)),
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foo.baz(3).then((res) => allRes.push(res)),
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]);
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expect(foo.calls).toBe(3);
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expect(allRes.length).toBe(6);
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allRes.sort();
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expect(allRes).toEqual([3, 3, 6, 6, 9, 9]);
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});
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});
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class Foo {
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calls = 0;
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@sequentialize((args) => "bar" + args[0])
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bar(a: number): Promise<number> {
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this.calls++;
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return new Promise((res) => {
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setTimeout(() => {
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res(a * 2);
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}, Math.random() * 100);
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});
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}
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@sequentialize((args) => "baz" + args[0])
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baz(a: number): Promise<number> {
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this.calls++;
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return new Promise((res) => {
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setTimeout(() => {
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res(a * 3);
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}, Math.random() * 100);
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});
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}
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}
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