29 lines
819 B
TypeScript
29 lines
819 B
TypeScript
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import * as cp from "child_process";
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import { Readable } from "stream";
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import test from "ava";
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import { expect } from "chai";
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import { duplex } from "../baseFunctions";
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test.cb(
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"duplex() combines a writable and readable stream into a ReadWrite stream",
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t => {
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t.plan(1);
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const source = new Readable();
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const catProcess = cp.exec("cat");
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let out = "";
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source
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.pipe(duplex(catProcess.stdin!, catProcess.stdout!))
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.on("data", chunk => (out += chunk))
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.on("error", t.end)
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.on("end", () => {
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expect(out).to.equal("abcdef");
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t.pass();
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t.end();
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});
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source.push("ab");
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source.push("cd");
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source.push("ef");
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source.push(null);
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},
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);
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