69 lines
1.6 KiB
TypeScript
69 lines
1.6 KiB
TypeScript
const test = require("ava");
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const { expect } = require("chai");
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const { compose, composeDuplex, map } = require("../src");
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test.cb("compose() chains two streams together in the correct order", t => {
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t.plan(3);
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let i = 0;
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const first = map((chunk: number) => chunk + 1);
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const second = map((chunk: number) => chunk * 2);
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const composed = compose(
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[first, second],
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{ objectMode: true },
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);
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composed.on("data", data => {
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expect(data).to.equal(result[i]);
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t.pass();
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i++;
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if (i === 3) {
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t.end();
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}
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});
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composed.on("error", err => {
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t.end(err);
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});
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composed.on("end", () => {
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t.end();
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});
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const input = [1, 2, 3];
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const result = [4, 6, 8];
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input.forEach(item => composed.write(item));
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});
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test.cb(
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"compose() followed by pipe chains streams together in the correct order",
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t => {
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t.plan(3);
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let i = 0;
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const first = map((chunk: number) => chunk + 1);
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const second = map((chunk: number) => chunk * 2);
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const composed = compose(
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[first, second],
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{ objectMode: true },
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);
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const third = map((chunk: number) => chunk + 1);
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composed.pipe(third).on("data", data => {
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expect(data).to.equal(result[i]);
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t.pass();
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i++;
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if (i === 3) {
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t.end();
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}
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});
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composed.on("error", err => {
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t.end(err);
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});
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const input = [1, 2, 3];
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const result = [5, 7, 9];
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input.forEach(item => composed.write(item));
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},
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);
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