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https://github.com/chanzuckerberg/cellxgene.git
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run prettier(2.0.5) (#1438)
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@@ -1,73 +1,73 @@
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import { PromiseLimit } from "../../src/util/promiseLimit";
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import { range } from "../../src/util/range";
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const delay = t => new Promise((resolve, reject) => setTimeout(resolve, t));
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const delay = (t) => new Promise((resolve, reject) => setTimeout(resolve, t));
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describe("PromiseLimit", () => {
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test("simple evaluation, concurrency 1", async () => {
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const plimit = new PromiseLimit(1);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve(1)),
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plimit.add(() => Promise.resolve(2)),
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plimit.add(() => Promise.resolve(3)),
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plimit.add(() => Promise.resolve(4))
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("simple evaluation, concurrency 1", async () => {
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const plimit = new PromiseLimit(1);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve(1)),
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plimit.add(() => Promise.resolve(2)),
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plimit.add(() => Promise.resolve(3)),
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plimit.add(() => Promise.resolve(4)),
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("simple evaluation, concurrency > 1", async () => {
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const plimit = new PromiseLimit(100);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve(1)),
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plimit.add(() => Promise.resolve(2)),
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plimit.add(() => Promise.resolve(3)),
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plimit.add(() => Promise.resolve(4))
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("simple evaluation, concurrency > 1", async () => {
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const plimit = new PromiseLimit(100);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve(1)),
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plimit.add(() => Promise.resolve(2)),
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plimit.add(() => Promise.resolve(3)),
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plimit.add(() => Promise.resolve(4)),
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("eval in order of insertion", async () => {
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const plimit = new PromiseLimit(100);
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let counter = 0;
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const result = await Promise.all([
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1)))
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("eval in order of insertion", async () => {
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const plimit = new PromiseLimit(100);
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let counter = 0;
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const result = await Promise.all([
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1))),
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plimit.add(() => Promise.resolve((counter += 1))),
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]);
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expect(result).toEqual([1, 2, 3, 4]);
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});
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test("obeys concurrency limit", async () => {
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const plimit = new PromiseLimit(2);
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let running = 0;
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let maxRunning = 0;
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test("obeys concurrency limit", async () => {
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const plimit = new PromiseLimit(2);
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let running = 0;
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let maxRunning = 0;
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const cbfn = async i => {
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running = running + 1;
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maxRunning = running > maxRunning ? running : maxRunning;
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await delay(100);
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running = running - 1;
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};
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const cbfn = async (i) => {
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running = running + 1;
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maxRunning = running > maxRunning ? running : maxRunning;
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await delay(100);
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running = running - 1;
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};
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const result = await Promise.all(
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range(10).map(i => plimit.add(() => cbfn(i)))
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);
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expect(maxRunning).toEqual(2);
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});
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const result = await Promise.all(
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range(10).map((i) => plimit.add(() => cbfn(i)))
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);
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expect(maxRunning).toEqual(2);
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});
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test("rejection", async () => {
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const plimit = new PromiseLimit(2);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve("OK")),
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plimit.add(() => Promise.reject("not OK")).catch(e => e),
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plimit.add(() => Promise.resolve("OK")),
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plimit
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.add(() => {
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throw new Error("not OK");
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})
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.catch(e => e.message)
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]);
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expect(result).toEqual(["OK", "not OK", "OK", "not OK"]);
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});
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test("rejection", async () => {
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const plimit = new PromiseLimit(2);
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const result = await Promise.all([
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plimit.add(() => Promise.resolve("OK")),
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plimit.add(() => Promise.reject("not OK")).catch((e) => e),
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plimit.add(() => Promise.resolve("OK")),
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plimit
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.add(() => {
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throw new Error("not OK");
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})
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.catch((e) => e.message),
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]);
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expect(result).toEqual(["OK", "not OK", "OK", "not OK"]);
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});
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});
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